TWI388777B - Reflecting cover and illumination device - Google Patents

Description

Reflector and lighting device

The present invention relates to an optical component used in the field of illumination, and more particularly to a light reflecting cover for illumination and an illumination device using the same.

With the development of semiconductor lighting technology, the light efficiency of light emitting diodes (LEDs) has been continuously improved, and it is gradually replacing traditional light sources, especially in the field of street lamps. How to effectively distribute the light energy emitted by LEDs is a key issue to be solved in the design of LED street light optical systems. At present, the light distribution of LED street lamps is mostly symmetrical, such as circular or rectangular. The use of a rectangular light distribution along the direction of the lane allows for greater area illumination while achieving energy savings. The existing methods for adjusting the light distribution mainly include: using a plurality of light sources having different light exiting planes (ie, different light exiting angles); and using an optical lens array to adjust the light emitting directions of the plurality of LEDs respectively. For the former improvement method, it is generally required to provide an adjustment device for each light source, resulting in a large volume of the LED street lamp and a high manufacturing cost, and for the second modification, an optical lens array having a high manufacturing cost must be used. And the light emitted by the LED passes through the optical lens array, causing a certain loss of light.

Therefore, it is necessary to provide a lighting device that is simple in structure and can form different light distributions.

An illuminating device which is simple in structure and can form different light distributions will be described below by way of example.

A reflector for adjusting the light distribution of a light-emitting diode light source Includes a bottom plate and a reflective ring. The intermediate portion of the bottom plate is for receiving the light emitting diode light source. The reflection ring is disposed on an intermediate portion of the bottom plate surrounding the bottom plate. The reflective ring is combined with the bottom plate to form an internal space, and the reflective ring includes a plurality of reflective units stacked in a direction away from the bottom plate. An inner surface of each of the reflecting units in the space is a reflecting surface for reflecting light, and an inner surface of the plurality of reflecting units has a sequentially increasing slope with respect to the bottom plate, and at least one of the plurality of reflecting units The inner surface of the person is perpendicular to the bottom plate.

An illumination device for adjusting a light distribution of a light-emitting diode light source includes a substrate, a plurality of light-emitting diode light sources disposed on the substrate, and a reflection module having a plurality of independently disposed reflectors. The reflective module has a plurality of independently disposed reflectors, and the plurality of reflectors respectively correspond to the plurality of light emitting diode sources. Each reflector includes a bottom plate and a reflective ring. The intermediate portion of the bottom plate is for receiving the light emitting diode light source. The reflection ring is disposed on an intermediate portion of the bottom plate surrounding the bottom plate. The reflective ring is combined with the bottom plate to form an internal space, and the reflective ring includes a plurality of reflective units stacked in a direction away from the bottom plate. An inner surface of each of the reflecting units in the space is a reflecting surface for reflecting light, and an inner surface of the plurality of reflecting units has a sequentially increasing slope with respect to the bottom plate, and at least one of the plurality of reflecting units The inner surface of the person is perpendicular to the bottom plate.

Compared with the prior art, the inner surfaces of the plurality of reflective units included in the reflective ring in the reflector are reflective surfaces having different slopes, so that the light emitted by the light emitting diodes disposed in the reflector has differentities through the plurality of The inner surface of the slope is reflected at a different angle relative to the bottom plate Shooting, thereby changing the light distribution of the light-emitting diode source. At the same time, the structure of the bottom plate and the reflection ring included in the reflector is relatively simple, so that the reflector and the illumination device using the reflector have a simple structure and are easier to assemble.

The invention will now be further described with reference to the specific embodiments thereof with reference to the accompanying drawings.

Hereinafter, the light-emitting diode 100 of the present invention will be further described in detail with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2 , a reflector 10 for adjusting the light distribution of the light-emitting diode light source 101 is provided in a first embodiment of the present invention. The reflector 10 includes a bottom plate 11 and a reflection ring 12 .

The intermediate position of the bottom plate 11 has a through hole 112 for housing the light emitting diode light source 101 therein. The bottom plate 11 can be a light-transmitting plate, and the material used is a light-transmitting material such as glass or resin. Of course, the through hole of the bottom plate 11 can also be replaced with a recess for accommodating the light emitting diode source 101, as long as the light emitting diode light source 101 is disposed in the middle portion of the bottom plate 11. Preferably, the light emitting surface 1012 of the light emitting diode source 101 is parallel to the upper surface 114 of the bottom plate 11.

The reflection ring 12 includes a first reflection unit 121, a second reflection unit 122, and a third reflection unit 123. The first reflecting unit 121, the second reflecting unit 122 and the third reflecting unit 123 are disposed on the bottom plate 11 and surround the through hole 112 of the bottom plate 11. In this embodiment, the first reflective unit 121, the second reflective unit 122, and the third reflective unit 123 are all annular structures, and the three are sequentially stacked in a direction away from the bottom plate 11, and The first reflecting unit 121 is connected to the bottom plate 11. The reflection ring 12 generally has an annular structure that combines with the bottom plate 11 to form a space 13. Of course, the first reflecting unit 121, the second reflecting unit 122, and the third reflecting unit 123 may be other annular structures such as a square, as long as they can be combined with the bottom plate 11 to form a space.

The inner surfaces of the first reflecting unit 121, the second reflecting unit 122, and the third reflecting unit 123 located in the space 13 are reflecting surfaces having different slopes with respect to the bottom plate 11. In this embodiment, the slopes of the inner surfaces of the first reflecting unit 121, the second reflecting unit 122, and the third reflecting unit 123 are sequentially increased in a direction away from the bottom plate. The light emitted by the light-emitting diode light source 101 is reflected by the inner surfaces of the first reflecting unit 121, the second reflecting unit 122, and the third reflecting unit 123 having different slopes, and is emitted at different angles with respect to the bottom plate 11, thereby changing The light distribution of the light-emitting diode light source 101, that is, the light field shape of the light-emitting diode light source 101 is changed. By changing the slopes of the inner surfaces of the first reflecting unit 121, the second reflecting unit 122, and the third reflecting unit 123 located in the space 13, the actual required light distribution can be obtained. It can be seen that the bottom plate 11 and the reflection ring 12 included in the reflector 10 have a relatively simple structure.

In addition, the first reflective unit 121, the second reflective unit 122, and the third reflective unit 123 included in the reflective ring 12 can be integrally formed by an injection molding technique, and further processed by the first reflective unit 121 by electroplating. The inner surface of the two reflecting unit 122 and the third reflecting unit 123 located in the space 13 forms a metal reflective film, which not only reduces the manufacturing cost, but also can be mass-produced.

It can be understood that the number of reflective units included in the reflective ring 12 and each inverse The slope of the firing element and the trend of the slope can be designed according to the actual light distribution.

Referring to FIG. 3, a reflector 20 according to the second embodiment of the present invention is substantially the same as the reflector 10 of the first embodiment, except that the LED source 201 is disposed on the bottom plate 21. On the bearing surface 212 and in the middle of the bearing surface 212.

The reflection ring 22 includes a first reflection unit 221 and a second reflection unit 222. The first reflection unit 221 and the second reflection unit 222 are disposed on the bottom plate 21 and surround the intermediate portion of the bottom plate 21. The first reflecting unit 221 is connected to the bottom plate 21. The inner surface of the first reflecting unit 221 is a reflecting surface having a predetermined slope, and the second reflecting unit 222 is perpendicular to the bottom plate 21.

The light emitted by the LED light source 201 is reflected at different angles after being reflected by the inclined inner surface of the first reflecting unit 221 and the vertical inner surface of the second reflecting unit 222, thereby changing the light of the light emitting diode 201. distributed. By changing the slope of the inner surface of the first reflecting unit 221, the actually required light distribution can be obtained. It can be seen that the bottom plate 21 and the reflection ring 22 included in the reflector 20 have a relatively simple structure.

It can be understood that a reflective unit of a plurality of annular structures and having different slope inner surfaces may be sequentially stacked between the bottom plate 21 and the second reflective unit 222 to change the light distribution of the light-emitting diode light source 201.

Referring to FIG. 4, a lighting device 30 according to a third embodiment of the present invention is configured to form different light distributions, including a substrate 31, a plurality of light emitting diode light sources 32, and a reflection module 33. Light board 34.

A plurality of light emitting diode light sources 32 are disposed on one surface 311 of the substrate 31 in an array arrangement. A plurality of light emitting diode light sources 32 are electrically connected to the substrate 31, respectively, and the substrate 31 is connectable to an external power source (not shown).

The reflection module 33 includes a plurality of reflectors 10 as described in the first embodiment. The plurality of reflectors 10 are independently disposed on the surface 311 of the substrate 31. Each of the reflectors 10 corresponds to one of the LED light sources 32, that is, the through holes 112 in the bottom plate 11 of each of the reflectors 10 accommodates a light emitting diode source 32. It can be understood that the number of the LED light sources 32 covered by each of the reflectors 10 can be designed according to the shape of the light field to be formed.

The light-transmitting plate 34 is disposed on a side of the reflective module 33 opposite to the surface 311 of the substrate 31 to cover the reflective module 33. The light-transmitting plate 34 is used for homogenizing the light emitted through the reflection module 33, so that the illumination device 30 can form different light distributions while having better light uniformity, and can prevent moisture from entering the reflection module 33.

The inner surface of the reflecting unit of each of the reflectors 10 can reflect the light emitted from the light-emitting diode source 32 below it to a different direction, thereby changing the light distribution of the light-emitting diode source 32. While the illumination device 30 has a large illumination range, the light distribution of the plurality of LED sources 32 can be varied by the interaction of the plurality of reflectors 10. As described above, the structure of each of the reflectors 10 is relatively simple and the manufacturing materials are relatively inexpensive, so that the assembly flexibility of the lighting device 30 is high and the manufacturing cost is low. It should be noted that, since the reflection module 33 includes a plurality of reflectors 10 that are independently disposed, when a reflector fails, it can be replaced separately, and the entire reflection module does not need to be removed, thereby reducing the number of reflectors. Maintenance cost of the lighting device 30.

Referring to FIG. 5, a fourth embodiment of the present invention provides a lighting device 40 for forming different light distributions, including a substrate 41, a plurality of light emitting diode light sources 42, and a reflection module 43. Light board 44. The illumination device 40 is substantially the same as the illumination device 30 described in the above third embodiment, except that the reflection module 43 includes a substrate 431 and a plurality of reflectors 10 as described in the first embodiment. The plurality of reflectors 10 are disposed on the substrate 431 in an array arrangement. In this embodiment, the components in the illumination device 40 can be assembled relatively easily, especially the reflective module 43.

It should be noted that the reflector 20 provided in the second embodiment described above can also be applied to the illumination device 30 or 40 instead of the reflector 10, and different light distributions can be obtained. Various other changes and modifications may be made by those skilled in the art in light of the technical concept of the present invention, and all such changes and modifications are intended to fall within the scope of the invention.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10, 20‧‧ ‧ reflector

101, 201, 32, 42‧‧‧Lighting diode source

11, 21‧‧‧ bottom plate

12, 22‧‧‧ reflection ring

112‧‧‧through hole

1012‧‧‧Glossy surface

114‧‧‧ upper surface

121, 221‧‧‧ first reflection unit

122, 222‧‧‧ second reflection unit

123‧‧‧ Third reflection unit

13‧‧‧ Space

212‧‧‧ bearing surface

30, 40‧‧‧ Lighting devices

31, 41, 431‧‧‧ substrates

33, 43‧‧‧reflection module

34, 44‧‧‧ Translucent panels

311‧‧‧ surface

1 is a perspective view of a reflector provided by a first embodiment of the present invention.

Figure 2 is a cross-sectional view of the reflector of Figure 1 taken along line II-II.

3 is a schematic cross-sectional view of a reflector provided by a second embodiment of the present invention.

4 is a schematic exploded view of a lighting device according to a third embodiment of the present invention.

FIG. 5 is a schematic exploded view of a lighting device according to a fourth embodiment of the present invention.

10‧‧‧reflector

101‧‧‧Lighting diode source

11‧‧‧floor

12‧‧‧Reflective ring

112‧‧‧through hole

121‧‧‧First reflection unit

122‧‧‧second reflection unit

123‧‧‧ Third reflection unit

13‧‧‧ Space

Claims (8)

A reflector for adjusting a light distribution of a light-emitting diode light source, comprising: a bottom plate, an intermediate portion of the bottom plate for accommodating the light-emitting diode light source; and an intermediate portion disposed on the bottom plate surrounding the bottom plate a reflection ring, the reflection ring is combined with the bottom plate to form an internal space, the reflection ring includes a plurality of reflection units stacked in a direction away from the bottom plate, and an inner surface of each reflection unit located in the space is used for Reflecting the reflecting surface of the light, the inner surface of the plurality of reflecting units has a sequentially increasing slope with respect to the bottom plate, and an inner surface of at least one of the plurality of reflecting units is perpendicular to the bottom plate. The reflector of claim 1, wherein the intermediate position of the bottom plate has a through hole for receiving the light source of the light emitting diode. The reflector of claim 1, wherein the intermediate position of the bottom plate has a recess for receiving the light source of the light emitting diode. The reflector of claim 1, wherein the reflecting unit has a square structure or a circular ring structure. An illumination device for adjusting a light distribution of a light-emitting diode light source, comprising: a substrate; a plurality of light-emitting diode light sources disposed on the substrate; and a reflection module having a plurality of independently disposed reflectors, a plurality of reflectors respectively corresponding to the plurality of light emitting diode light sources, each reflector cover comprising: a bottom plate, the middle portion of the bottom plate having a light with the light emitting diode a counter opposite hole; a reflective ring disposed on the bottom plate surrounding the through hole, the reflective ring being combined with the bottom plate to form an internal space, the reflective ring comprising a plurality of reflective units continuously disposed away from the bottom plate An inner surface of each of the reflective units in the space is a reflective surface for reflecting light, and an inner surface of the plurality of reflective units has a sequentially increasing slope with respect to the bottom plate, and at least one of the plurality of reflective units The inner surface of one is perpendicular to the bottom plate. The illuminating device of claim 5, further comprising a light transmissive plate covering the reflective module, the light transmissive plate being located at the plurality of light emitting diodes of the reflective module The opposite side of the body light source. The illuminating device of claim 5, wherein the reflection module further comprises a carrier plate having a bearing surface, the plurality of reflectors being arranged in an array on the bearing surface of the carrier plate . The illuminating device of claim 5, wherein the reflecting unit has a square structure or a circular ring structure.