WO2001013034A1

WO2001013034A1 - Mobile lamp

Info

Publication number: WO2001013034A1
Application number: PCT/DE2000/002608
Authority: WO
Inventors: Thomas Strobl
Original assignee: Thomas Strobl
Priority date: 1999-08-13
Filing date: 2000-08-03
Publication date: 2001-02-22
Also published as: AU7402300A; DE29913930U1

Abstract

The present invention relates to a mobile lamp (2) for illuminating objects at distances of more than 10m. The inventive lamp contains at least one illuminating means (1) that consists of one or more components and is embodied as one or more illuminating diodes (3), semiconductor diodes or luminescence diodes. The at least one illuminating diode (3), semiconductor diode or luminescence diode emits monochromatic or polychromatic or white light.

Description

Mobile lamp

The present invention relates to a mobile lamp with the features specified in the preamble of claim 1.

Known flashlights use temperature sensors such as incandescent or halogen lamps as illuminants. With such temperature radiators, the supplied

Most of the energy is initially converted into unused heat, while only a small proportion is emitted in the form of light.

Flashlights with incandescent or halogen lamps therefore have the particularly serious disadvantage of high energy consumption.

With the disadvantage of high energy consumption, the disadvantage of a short operating time is associated with a single set of batteries.

For longer expeditions, many batteries must therefore be transported. Due to the large weight of batteries, this is tedious and often excludes the carrying of other urgently needed items due to excess weight.

The frequently required battery change also leads to a pronounced waste problem and environmental pollution.

Another disadvantage of flashlights with temperature lamps is the short life of the lamp.

The average service life of a 12V / 100W incandescent lamp is only about 25 hours. Halogen lamps of the same power can be used for about 50 hours. The high energy and battery costs caused by the high energy consumption lead in conjunction with the short life of the lamps in the case of the known flashlights. Temperature radiator lamps have the disadvantage of particularly high operating costs.

The operating costs for one hour of flashlight use with a bulb lamp are approximately DM 1.50.

Another serious disadvantage of flashlights with incandescent or halogen lamps is their pronounced sensitivity to shock.

Even minor vibrations can easily break the hot filament in particular. During expeditions or life-saving or military operations, this sudden and unexpected failure of the temperature lamp glow medium is particularly disadvantageous.

Another disadvantage of the known flashlights is that their brightness cannot usually be regulated. It is also not possible to change the color of the lamp.

Incandescent or halogen lamps emit light whose spectral composition and color temperature are far removed from those of sunlight. Minor color differences on the object to be viewed can therefore not be detected with incandescent or halogen lamps.

Another disadvantage of flashlights with incandescent or halogen lamps can be seen in the fact that they can only be made watertight with considerable constructional material expenditure. Because the lamp must be easily accessible and interchangeable due to its pronounced sensitivity to shock and short life.

The object of the present invention is therefore to provide a mobile lamp with a very low energy requirement and - as a result - a long operating time per battery pack, with a particularly long-lasting and shock-resistant lamp, the brightness and color of which can be regulated and the light emitted in the Comparison to the light emitted by Theimo radiators is closer to the spectral composition of sunlight in order to be able to recognize color differences more clearly, and with low operating costs, this luminaire being particularly easy to carry out in a watertight manner.

According to the invention, this object is achieved with a generic lamp by the features specified in the characterizing part of patent claim 1.

Particularly preferred embodiments are the subject of the dependent claims.

Embodiments of the invention are described in more detail with reference to the drawings. Show it:

Figure 1 is a schematic, perspective view of a mobile lamp according to the invention in the form of a flashlight with four light-emitting diodes and without a reflector from obliquely in front;

Figure 2 is a schematic cross section through a ^¬ he invention contemporary light with a collimating lens which covers the light emitting diode module frontwärtig; Figure 3 is a schematic cross section along the longitudinal axis of a light emitting diode with an integrated converging lens;

FIG. 4 shows a schematic cross section through a light-emitting diode according to the invention, which is inserted into the focal point region of a reflector and has a concave curvature at the front;

Figure 5 shows a schematic cross section through the front area of a mobile lamp according to the invention with a light-emitting diode carrier plate that can be bent and curved in the direction of the handle;

FIG. 6 shows a schematic cross section through the front area of a mobile lamp according to the invention with a light-emitting diode carrier plate that can be curved and is curved opposite to the direction of the handle;

7 shows a schematic cross section through a light-emitting diode used according to the invention with a flexible, curved reflector, in which the light-emitting component of the light-emitting diode is provided embedded in a flexible mass.

The mobile lamp (2) according to the invention is a device for receiving a lamp and the parts necessary for operation, including the lamp (1; 3). The mobile lamp according to the invention is particularly suitable for illuminating objects at distances of more than 10 m.

One or more light-emitting diodes (3), semiconductor diodes or luminescent diodes are preferably used as the illuminant (1). Each of these light-emitting diodes (3), semiconductor diodes or luminescent diodes can be single-colored or multi-colored. They preferably emit white light.

The mobile lamp according to the invention can have, for example, a single, particularly bright light-emitting diode (3). Of course, however, it is possible to attach two to, for example, 25 light-emitting diodes (3), in particular in the front area of the mobile lamp, which - as shown in Figure 1 - can be at least slightly spaced apart.

As an alternative to this, it is possible to combine the light-emitting diodes (3) closely arranged in modules.

In particular in Figures 2, 5 and 6 it is shown that the one or more light emitting diodes (3) are preferably provided on a carrier plate (4). This carrier plate (4) can be non-mirrored or mirrored to increase the amount of light emitted.

In Figures 1 and 2, the support plate (4) is flat.

As shown in Figure 5, the carrier plate '4) can, for example, also be curved or curved concavely in the direction of the housing (8; or convexly in the direction of the object to be irradiated.

If the carrier plate (4) can be bent, an at least somewhat elastic and / or bendable material is recommended for its production.

The direction of curvature of the carrier plate (4) can be changed, for example, by one or more adjusting screws (11), push rods, by moving the battery or pneumatically. The concave curvature of the carrier plate (4) shown in FIG. 5 leads to a bundling of the emitted light beams, in particular if the carrier plate (4) is coated on the front side with a light-reflecting material or is produced from such.

The opposite, convex curvature of the carrier plate (4), which is shown in FIG. 6, is particularly advantageous when the mobile lamp according to the invention is used as a table lamp or pendant lamp.

The light-emitting diodes (3) used according to the invention emit light of the same wavelength and / or brightness, for example. Of course, however, it is possible to select or control the light-emitting diodes (3) in such a way that they emit light of different wavelengths and / or brightness depending on or independently of one another. The brightness and / or the color of one or more light-emitting diodes (3) can be constant or controllably variable.

The at least one light-emitting diode (3) is preferably designed such that its brightness and / or color can be controlled via the applied voltage αnd / or the frequency of the applied voltage and / or via the pressure acting directly or indirectly on the light-emitting component (12) ,

In Figure 3 it is shown that each light-emitting diode (3) can be equipped at the front with at least one converging lens (7) which is not mirrored or at least partially mirrored. Of course, instead of a converging lens (7), a diffusing lens can be used. The optionally present mirroring is preferably designed such that the radiation emitted by the light-emitting component (12) is either emitted in a frontal direction or is emitted laterally in the direction of a reflector (9) which may be present.

It can be seen from Figure 4 that the light-emitting diode (3ι) used according to the invention can have, for example, a curvature (10) at the front, which is concavely curved inwards in the direction of the light-emitting component (12) of the light-emitting diode (3). This curvature (10) can be mirrored The advantage of such a concave curvature (10) in the front region of the light-emitting diode (3) can be seen, inter alia, in the fact that a larger part of the emitted light is emitted onto the reflector (9) which may be present and from there onto the target can be focused.

Figure 2 shows that the large number of light-emitting diodes (3) combined into a module, for example Ξ / »', can be covered by a single converging lens (6) or a diffusing lens. These lenses can also be non-mirrored or at least partially mirrored.

In particularly preferred embodiments, the one or more light-emitting diodes (3) are provided essentially in the region of the focal point of a reflector (9). As shown in particular in Figures 1, 2, 5 and 6, it is of course possible to provide at least a large part of the light-emitting diodes (3) outside the focal point area of the reflector (9). Each individual light-emitting diode (3) can have its own reflector (9), which, for example, is at least partially integrated into the lamp (3), projects beyond it (Figure 4) or is formed along the outside thereof, at least in sections.

Figure 7 shows an example of a light-emitting diode according to the invention, which has an at least some flexible and curved reflector (9) at the rear. This rellector ι9) can essentially be in the form of a hemisphere. Within this essentially hemispherical reflector (9) there is provided in a transparent and flexible mass of the light-emitting component (12). The focal length of the light-emitting diode (3) can be controlled particularly quickly and easily by means of indirect or direct action of lateral compressive forces on the front edge regions of the hemispherical reflector (9).

In particularly inexpensive embodiments of the mobile luminaire according to the invention, the one light-emitting diode (3 ^ and / or the plurality of light-emitting diodes (3) combined in a modular manner is essentially rigid and rigid in the focal point region of the reflector (9).

Preferably, however, one light-emitting diode (3) and / or the plurality of light-emitting diodes (3) combined in a modular manner is attached along the optical axis of the reflector (9) in the focal point region of the reflector (9) so that it can be displaced at least somewhat to the front and / or backwards.

As an alternative to the focal point area of the reflector (9), the light-emitting diodes (3) can also be provided distributed over the entire surface of the reflector (9). As can be seen from Figure 3, in particularly inexpensive embodiments of the mobile luminaire according to the invention, the radiation area of the light-emitting component (12) is limited to the relatively small base area (13) of the light-emitting diode (3).

To enlarge the light-emitting surface of the light-emitting component (12), when viewed from the side, at least one light-emitting surface of the light-emitting component (12) can be parallel or oblique to the optical axis of the at least one reflector (9) and / or essentially at right angles or be aligned obliquely to the rear standing surface (13) of the light-emitting diode (3).

Of course, it is possible for the light-emitting diode (3) to comprise a plurality of light-emitting components (12). To increase the light output, it is possible in this case to light the light-emitting surfaces of these multiple light-emitting components (12) essentially parallel or at an angle to the optical axis of the reflector (9) and / or essentially at right angles or at an angle to the rear standing surface ( 13) to align the light-emitting diode (3). The arrangement of the light-emitting components (12) in the front view of the light-emitting diode (3) is then preferably essentially circular or ring-shaped. This circular or ring-shaped arrangement of light-emitting components (12) can optionally be covered from the front by a circular light-emitting component (12) in the front view of the light-emitting diode (3).

Instead of a large number of light-emitting components (12), the light-emitting diode (3) can, for example, have a particularly large-area light-emitting component (12), for example essentially in the form of a rod, cylinder, Linden, hollow cylinder, a pyramid or a paraboloid, the longitudinal axis of which is aligned essentially parallel to the optical axis of the reflector (9) and / or at right angles to the rear standing surface (13) of the light-emitting diode (3).

As an alternative to using a single light-emitting diode (3) with the features just described, it is possible to use a large number of light-emitting diodes (3) with, for example, elongated and essentially rod-shaped light-emitting constituents' 12), which in an optionally essentially reflector-shaped plane aligned light-emitting components (12) are arranged essentially in a star shape and in the center of the star-shaped arrangement a light-emitting diode (3) with a circular or rectangular base (13) is optionally provided.

Of course, it is possible not to arrange the light-emitting components (12) of this type in a star shape, but rather over a large area, for example parallel to one another or intermeshing.

It has proven particularly advantageous to integrate the one light-emitting diode (3) or the plurality of light-emitting diodes (3) and / or the one or more reflectors (9) indirectly or directly and completely or at least partially into a transparent front cover. Thanks to this transparent front cover, the space between the individual is contaminated

LEDs and the reflector (9) excluded. The transparent front cover also eliminates the risk of mechanical damage to the LEDs (3). In addition, by means of such a front cover or by pouring in the light-emitting diode (3) or the Light-emitting diodes in synthetic resin or glass can be brought about in a structurally particularly simple way that the mobile luminaire according to the invention is perfectly watertight.

The mobile lamp according to the invention can for example be in the form of a flashlight, headlamp, bicycle front lamp, a motor vehicle headlight, a mobile table lamp, a Taucnerla pe or a flashlight, the shape of which essentially corresponds to the flattened dimensions of a check card.

As an alternative to this, the mobile lamp according to the invention can be at least partially integrated in a hand-operated tool, in a pocket knife, in a pocket tool or in a cutlery.

In summary, it can be stated that the mobile luminaire according to the invention has extremely low energy consumption due to the use of light-emitting diodes - instead of temperature radiators such as incandescent lamps or halogen lamps. Finally, the light-emitting diodes (3) only produce so-called “cold light” and precisely not thermal radiation.

The particularly low energy consumption leads to the advantage that the luminaire according to the invention with a single set of batteries enables a much longer operating time compared to luminaires with incandescent lamps.

The particularly long lifespan of the light-emitting diodes used according to the invention also embodies a great advantage. While the lifespan of a 12V / 100W incandescent lamp is only about 25 hours, the lifespan of a light-emitting diode used according to the invention is about 10 to 11 years! Thanks to the low energy consumption and the long life of the LEDs, the operating costs of the lamp according to the invention are particularly low. While the operating costs for one hour of flashlight use with an incandescent lamp are approximately DM 1.50, the operating costs for one hour of use of the lamp according to the invention are only DM 0.1 /, ie less than a tenth.

An outstanding advantage of the lamp according to the invention can be seen in the shock resistance of the light-emitting diodes (3). This advantage is particularly noticeable on expeditions or life-saving or military missions.

Another advantage of the luminaire according to the invention is that the brightness and the color of the light-emitting diode can be controlled quickly and easily by simply changing the voltage applied to the light-emitting diode (3) and, if appropriate, by means of its frequency.

Especially since the spectral composition of the light emitted by the light-emitting diode (3) used according to the invention is very close to the spectral composition of sunlight, with the help of the mobile lamp according to the invention even slight color differences on an illuminated object can be reliably detected.

A major advantage of the mobile according to the invention

Finally, the lamp consists in that it can be made watertight in a particularly simple manner by simply casting or pouring the light-emitting diodes (3). This is the case with the invention Luminaire possible because the LEDs (3) no longer need to be replaced.

Claims

claims

1. Mobile light (2) for illuminating objects at distances of more than 10 m, characterized in that it contains at least one one-piece or multi-piece illuminant (1), which is embodied by one or more light-emitting diodes (3), semiconductor diodes or luminescent diodes the at least c-in light-emitting diode (3), semiconductor diode or luminescent diode emits single-color or multi-color or white light.

2. Luminaire according to claim 1, characterized in that it comprises two to 25 light-emitting diodes (3), which are provided at least somewhat apart from one another or are arranged in modules closely arranged to one another.

3. Luminaire according to one of the preceding claims, characterized in that the one or more light-emitting diodes (3) is or are provided on a mirrored or non-mirrored carrier plate (4), the carrier plate (4) being flat or convex or is concavely curved or bendable.

4. Luminaire according to one of the preceding claims, characterized in that the light-emitting diodes (3) emit light of the same wavelength and / or brightness or, depending on or independently of one another, emit light of different wavelengths and / or brightness.

5. Luminaire according to one of the preceding claims, characterized in that the brightness and / or the color of the one or more light-emitting diodes (3) are constant or are controllably variable.

6. Luminaire according to one of the preceding claims, characterized in that the brightness and / or the color of the at least one light-emitting diode (3) via the applied voltage and / or the frequency of the applied voltage and / or via the light-emitting component (12) indirectly or directly acting pressure is controllable.

7. Luminaire according to one of the preceding claims, characterized in that each light-emitting diode (3) is equipped at the front with at least one converging lens (7) or diffusing lens, which is not mirrored or at least partially mirrored.

8. Luminaire according to one of the preceding claims, characterized in that the light-emitting diode (3) has a curvature at the front (10) which is concave inwards in the direction of the light-emitting component (12)

LED (3) is curved and mirrored or not mirrored.

9. Luminaire according to one of the preceding claims, characterized in that the plurality of light-emitting diodes (3) combined to form a module is covered at the front by a converging lens (6) or diffusing lens which is not mirrored or at least partially mirrored.

10. Luminaire according to one of the preceding claims, characterized in that the one or more light-emitting diodes (3) are provided substantially in the region of the focal point of a reflector (9) or outside of this reflector region.

11. Luminaire according to one of the preceding claims, characterized in that j de individual light-emitting diode (3) has its own reflector (9) which is at least partially integrated in the light-emitting diode (3) or projects beyond it or extends along the outside of the LED (3) extends at least in sections.

12. Luminaire according to one of the preceding claims, characterized in that the one light-emitting diode (3) and / or the modularly combined plurality of light-emitting diodes (3) substantially in the focal point region of the reflector (9) or along the optical axis of the reflector (9) at least somewhat to the front and / or to the rear are provided.

13. Luminaire according to one of the preceding claims, characterized in that a plurality of light-emitting diodes (3) are provided distributed over the surface of the reflector (9).

14. Luminaire according to one of the preceding claims, characterized in that when viewed from the side at least one light emitting surface of the light-emitting component (12) of the light-emitting diode (3) parallel or obliquely to the optical axis of the at least one reflector (9) and / or substantially is aligned at right angles or at an angle to the rear standing surface (13) of the light-emitting diode (3).

15. Luminaire according to one of the preceding claims, characterized in that the light-emitting diode (3) comprises a plurality of light-emitting components (12), the light-emitting surfaces of which, when viewed from the side, are aligned essentially parallel or obliquely to the optical axis of the reflector (9), wherein the arrangement of the light-emitting components (ι2) in the front view of the light-emitting diode (3) is essentially circular or ring-shaped, and this circular or ring-shaped arrangement of light-emitting components (12) optionally frontward by a circular one in the front view of the light-emitting diode (3) light-emitting component

(12) is covered.

16. Luminaire according to one of the preceding claims, characterized in that a multi-part illuminant (1) comprises a plurality of light-emitting diodes (3) whose light-emitting components (12) and light-emitting surfaces are elongated and when viewed from the side essentially at right angles to the optical one The axis of the reflector (9) and / or essentially parallel or oblique to the rear standing surface (13) of the respective light-emitting diode (3) are aligned, the arrangement of the light-emitting components (12) and the light-emitting surfaces in the front view of the multi-part Illuminant (1) is essentially star-shaped or largely rectangular, polygonal or circular, in the case of a star-shaped arrangement in the center of which at least one light-emitting diode (3) has a circular or rectangular base

(13) is provided or is not provided.

17. Luminaire according to one of the preceding claims, characterized in that the light-emitting component (12) of the light-emitting diode (3) is formed essentially in the shape of a rod, cylinder, hollow cylinder or a pyramid or a paraboloid, the longitudinal axis of which is essentially parallel to the optical axis of the reflector (9) and / or perpendicular to the rear standing surface (13) of the light-emitting diode (3) or perpendicular to the optical axis of the reflector (9 / and / or parallel to the rear standing surface (13) of the light-emitting diode (3 ) aligned

18. Light according to one of the preceding claims, characterized in that it is designed in the form of a flashlight, headlamp, bicycle front lamp, a motor vehicle headlight, a mobile table lamp, diving lamp or a flashlight, the shape of which essentially corresponds to the flattened dimensions of a check card, or m a hand-operated tool, m a pocket knife, me -n pocket tool or m a cutlery is at least partially integrated.

19. Luminaire according to one of the preceding claims, characterized in that the one light-emitting diode (3) or the plurality of light-emitting diodes (3) and / or the or the reflectors (9) indirectly or directly and completely or at least partially m a transparent front cover integrated or cast directly or indirectly with one another by means of a synthetic resin.