CN106287330A - Light emitting module - Google Patents

Abstract

The invention relates to a light-emitting module, which comprises a light source, an optical plate and a reflector, wherein the optical plate is provided with a light inlet surface, a light outlet surface and a bottom surface, two side edges of the light inlet surface are respectively connected with the light outlet surface and the bottom surface, the light outlet surface is opposite to the bottom surface, the light source is arranged on one side of the light inlet surface, a plurality of optical structures are arranged on the light outlet surface, the distribution density of the optical structures close to the light inlet source is smaller than that far away from the light source, one part of light is scattered out of the light outlet surface through the optical structures, the other part of light is scattered out of the light outlet surface through the diffuse reflection of the reflector, and the light is scattered by multiple reflections, so.

Description

Lighting module

technical field

The invention relates to a light-emitting module, in particular to a light-emitting module in which multiple optical structures are arranged on the light-emitting surface of an optical plate.

Background technique

Modern life is getting more and more advanced, the high-tech industry is booming, the industrial scale of lamps and the fierce competition among international manufacturers are expanding day by day. In this trend, there is also considerable competition for light-emitting diode (LED) lamps. , and the research and development of the light-guiding structure of light-emitting diodes is also relatively important.

However, in recent years, with the improvement of the manufacturing technology of LED lamps, under the trend of large size and low price, the existing LED lamps are mostly restricted by the appearance of traditional lighting lamps, resulting in thick and unattractive appearance of the lamps. To further modify the LED lamps, the overall weight of the lamps will be increased,

Moreover, the LED lamps of the prior art must be provided with a brightness enhancing film or a diffuser on the internal light-emitting module to increase the brightness and uniformity of the LED lamps. In this way, the structure of the LED lamps needs to be increased thickness, and this leads to difficulties in the design of LED lamps. In addition, because the LED lamps are too thick, the structure designed to support the LED lamps is also relatively large, and it is not suitable for all installations. method (such as: embedded, ceiling or suspended), so conventional light-emitting diode lamps cannot be used in a variety of ways, so the research and development of this part of the technical shortcomings is the direction and important topic that everyone needs to work together At present, most lamps are considering the market requirements of lightweight, thin, low power consumption, high brightness and cost reduction. In order to maintain competitiveness in the future lamp market, lamps should be designed for cost reduction and light weight. .

In view of this, aiming at the shortcomings of the conventional technology, the inventor further developed a light-emitting module. In addition to the known advantages, the designed structure can effectively improve the brightness and uniformity of the light-emitting module, and can save The use of brightness-enhancing film or diffuser can not only reduce the cost of lamps, but also have the effect of light weight, which can facilitate the diversified use and design of lamps.

Contents of the invention

The purpose of the present invention is to provide a light-emitting module, which can make the light passing through the light-emitting surface of the optical plate do not need to add any additional structures (such as: diffusion sheet or brightness enhancement film, etc.) on the light-emitting surface of the optical plate. Can fully and uniformly emit light.

The object of the present invention is to provide a light emitting module, which can reduce the weight of the light emitting module structure and reduce the cost of the light emitting module.

The purpose of the present invention is to provide a light-emitting module, which uses ink to print an optical structure on the light-emitting surface of the optical plate, so as to enhance the protection of the light-emitting surface of the optical plate.

In order to achieve the purpose and effect mentioned above, the present invention is a light emitting module, which includes a light source, an optical plate and a reflector, the optical plate has a light incident surface, a light exit surface and a bottom surface, the light incident surface The two sides of the surface are respectively connected to the light-emitting surface and the bottom surface. The light-emitting surface is opposite to the bottom surface. The distribution density close to the light source is smaller than the distribution density away from the light source, the reflector is arranged under the bottom surface of the optical plate, wherein the light source emits a light, and the light is incident on the optical plate from the light incident surface, a part The light is scattered outward by the optical structures on the light-emitting surface, and another part of the light is reflected by the optical structure to the reflector under the bottom surface, and the reflector diffusely reflects the light back to the optical plate , and emit light from the light-emitting surface.

An embodiment of the present invention discloses that the bottom surface is a smooth mirror structure.

An embodiment of the present invention discloses that each of the optical structures is a dot or a microstructure.

An embodiment of the present invention discloses that the optical structures are printed on the light emitting surface with ink.

An embodiment of the present invention discloses that the reflector is further disposed on the outside of the light source.

An embodiment of the present invention discloses that further the reflector is extended on the light surface of the light incident surface opposite to the optical plate.

An embodiment of the present invention discloses an auxiliary light source disposed on the light surface opposite to the light incident surface.

An embodiment of the present invention discloses that the distribution density of the optical structures near the auxiliary light source is smaller than the distribution density away from the auxiliary light source.

An embodiment of the present invention discloses that the reflector is further disposed outside the auxiliary light source and the light source.

Description of drawings

Fig. 1: It is the perspective view of the light emitting module of the first embodiment of the present invention;

Fig. 2: it is the side view of the light emitting module of the first embodiment of the present invention;

Figure 3: It is a schematic diagram of the light path of the light emitting module of the first embodiment of the present invention;

Fig. 4: It is a perspective view of the light emitting module of the second embodiment of the present invention;

Fig. 5: It is a side view of the light emitting module of the second embodiment of the present invention;

Figure 6: It is a schematic diagram of the light path of the light emitting module of the second embodiment of the present invention; and

Fig. 7: It is a schematic diagram of the reflector of the light emitting module according to the third embodiment of the present invention.

[Description of drawing number comparison]

1 light module

11 Optical board

100 rays

111 light incident surface

112 Light-emitting surface

113 Bottom

114 Optical structure

115 side light surface

12 light sources

13 reflector

21 auxiliary light source

detailed description

In order to make the structural features of the present invention and the achieved effects have a further understanding and recognition, preferred embodiments and detailed descriptions are specially used, which are described as follows:

The present invention improves the conventional light-emitting module technology. Traditional light-emitting modules must be equipped with refraction or scattering structures such as brightness-enhancing film or diffusion sheet on the optical plate to increase the light uniformity of the light-emitting module. If the design of the optical plate can Effectively improving the brightness and uniformity of the light-emitting module can save the use of refraction or scattering structures such as brightness-enhancing films or diffusion sheets. In addition to reducing the cost of the module, it can also have a lightweight effect. Therefore, the inventor aimed at this part of the technology. research and development, and provide a light-emitting module that can reduce module cost and reduce volume and weight.

Please refer to FIG. 1 and FIG. 2, which are a perspective view and a side view of a first embodiment of the present invention; A light source 12 and a reflector 13, the optical plate 11 has a light incident surface 111, a light exit surface 112 and a bottom surface 113, the two sides of the light incident surface 111 are respectively connected to the light exit surface 112 and the bottom surface 113, the The light emitting surface 112 is opposite to the bottom surface 113, the light source 12 is arranged on one side of the light incident surface 111, and a plurality of optical structures 114 are arranged on the light emitting surface 112, and these optical structures 114 are distributed near the light source 12 The density is less than the distribution density away from the light source 12, the reflector 13 is arranged under the bottom surface 113 of the optical plate 11, and the reflector 13 is further extended to the side of the light incident surface 111 opposite to the optical plate 11. Surface 115.

In this embodiment, the optical structures 114 are printed on the light-emitting surface 112 with ink, and each of the optical structures 114 is dots or microstructures, etc., and each of the optical structures 114 can be used to scatter and reflect light , and the light source 12 is a light emitting diode light source, and the bottom surface 113 of the optical plate 11 of the light emitting module 1 is a smooth mirror structure, and the reflector 13 is a non-mirror structure.

Please also refer to FIG. 3 , which is a schematic diagram of the light path of the light-emitting module of the first embodiment of the present invention; Incident in the optical plate 11, the light 100 (first path light) is directly directed to the light-emitting surface 112, and passes through the optical structures 114. The light 100 is totally reflected due to the destruction of the optical structures 114, and As a result, part of the light 100 exits the light-emitting surface 112 and scatters light, and another part of the light 100 is reflected back to the bottom surface 113 of the optical plate 11, and passes through the bottom surface 113 to irradiate the reflector 13, and the reflector 13 It is a non-mirror structure, which will cause the light 100 to produce diffuse reflection, that is, the light 100 is irradiated on a rough surface, and the light 100 is not uniformly reflected to the surroundings, and the reflector 13 scatters the light 100 back to the optical plate 11 , and emit light from the light emitting surface 112 .

Furthermore, another part of the light 100 (second path light) is directed towards the bottom surface 113, the light 100 is directed towards the bottom 113 having a smooth mirror structure, and the light 100 is directly reflected to the light-emitting surface 112 until the light After the 100 is subjected to total reflection by the optical structures 114 of the light-emitting surface 112 , the light-emitting mode and result are the same as those of the first path of light, so details will not be repeated here.

In addition, another part of the light 100 (third path light) directly exits the side light surface 115, and is reflected by the reflector 13 back to the optical plate 11, and the light 100 is also incident on the light exit surface 112. , and is the same as the light-emitting mode and result of the light in the first path, so it will not be repeated here.

This embodiment improves the shortcomings of the conventional technology. In the conventional technology related to the light-emitting module, the optical structure is usually arranged at the bottom of the optical plate. It needs to pass through the optical structure to emit directly to the light-emitting surface without light scattering effect. You can still see the obvious distribution of bright and dark areas on the light-emitting surface. This is the result of uneven light emission, so it is necessary to further diffuse the film ( Or atomized light-emitting surface) is set at the light-emitting surface of the optical plate, so that the light that passes through the diffuser (or atomized light-emitting surface) can be diffused more uniformly, and cover up the flaws of uneven light from the optical plate. At the same time, it can also use diffusion sheet (or atomized light-emitting surface) to protect the effect of the light-emitting surface of the optical plate, but this method will increase the volume and weight of the light-emitting module, and will also increase the manufacturing cost. This embodiment provides a light-emitting module 1, which will The optical structures 114 are arranged on the light-emitting surface 112, and the distribution density of the optical structures 114 close to the light-incident surface 111 is smaller than the distribution density away from the light-incident surface 111. The light 100 on the surface 112 needs to pass through the optical structures 114 of the light-emitting surface 112, so that part of the light 100 is affected by the optical structures 114, and the light is scattered, and the other part of the light 100 is affected by the optical structures 114, resulting in the The light 100 is reflected to the reflector 13 outside the bottom surface 113, the light 100 is affected by the diffuse reflection of the non-mirror structure of the reflector 13, and the light is scattered to the light-emitting surface 112, and the light 100 is reflected by multiple reflections. Scattering method, so that the surface light source of the light-emitting surface 112 emits light evenly, so that the light-emitting surface 112 does not need to add additional components such as diffusion sheet or atomized light-emitting surface, etc., and the optical structures 114 are printed on the light-emitting surface with ink. The light-emitting surface 112 of the optical plate 11 makes the hardness of the light-emitting surface 112 of the optical plate 11 higher than the hardness of the light-emitting surface 112 of the optical plate 11 without printing ink, and the optical structures 114 also protect the The efficacy of the light emitting surface 112 of the optical plate 11 .

Please refer to FIG. 4 to FIG. 6, which are perspective views, side views and light path diagrams of the second embodiment of the present invention; as shown in the figures, the difference between this embodiment and the first embodiment is that this embodiment is more An auxiliary light source 21 is further provided, the auxiliary light source 21 is arranged on the side light surface 115 of the optical plate 11, and the distribution density of the optical structures 114 on the light emitting surface 112 is further away from the auxiliary light source 21 and the light source 12 The denser the distribution density, in other words, the optical structures 114 are concentrated and distributed in the middle part of the optical plate 11, and the distribution density near the auxiliary light source 21 and the light source 12 is more sparse, and the light irradiation of the auxiliary light source 21 The method is also the same as the light irradiation method of the light source 12, and the above-mentioned addition of the auxiliary light source 21 can enhance the light intensity of the light emitting module 1, and other functions and structures are the same as those of the first embodiment, so no further description is given.

Furthermore, please refer to FIG. 7 , which is a schematic diagram of the reflector of the light-emitting module of the third embodiment of the present invention; as shown in the figure, the difference between this embodiment and the second embodiment is that this embodiment further The reflector 13 is arranged on the outside of the light source 12 and the auxiliary light source 21, so that the light from the light source 12 and the auxiliary light source 21 can be concentrated on the optical plate 11 to improve the efficiency of light use. This embodiment can also be applied to the second an embodiment.

To sum up, the present invention relates to a light-emitting module, which includes an optical plate and a light source, and a plurality of optical structures are arranged on the light-emitting surface of the optical plate, and the distribution density of these optical structures is closer to At the light source (the light source or the auxiliary light source), the distribution density of these optical structures is more sparse, and on the contrary, the distribution density of these optical structures is denser, so that the light can pass through the optical structures of the light-emitting surface. Scattered light is generated, and the surface light source on the light-emitting surface emits light evenly. The light-emitting surface does not need additional components such as diffusers or atomized light-emitting surfaces to reduce volume and weight, and reduce costs. In addition, using The ink printing these chemical structures on the light-emitting surface also has the effect of protecting the light-emitting surface of the optical plate.

The above is only a preferred embodiment of the present invention, and is not intended to limit the implementation scope of the present invention. All equivalent changes and modifications made in accordance with the shape, structure, characteristics and spirit described in the scope of the claims of the present invention shall be included in the scope of the claims of the present invention.

Claims (9)

1. a light emitting module, it is characterised in that it comprises:

One light source；

One optical plate, it has an incidence surface, an exiting surface and a bottom surface, the dual-side of this incidence surface connects this exiting surface and this bottom surface respectively, this exiting surface is relative to this bottom surface, this light source is arranged at the side of this incidence surface, and multiple optical texture is arranged at this exiting surface, and these a few optical textures in the distribution density near this light source less than the distribution density away from this light source；And

One reflecting element, it is arranged under this bottom surface of this optical plate；

Wherein, this light source sends a light, this light is incident in this optical plate from this incidence surface, this light of a part outwards scatters light through these a few optical textures of this exiting surface, this reflecting element that this light is reflected towards under this bottom surface by this light of another part by this optical texture, and optical plate is returned in this light diffuse-reflectance by this reflecting element, and gone out light by this exiting surface.

2. light emitting module as claimed in claim 1, it is characterised in that wherein this bottom surface is smooth mirror surface structure.

3. light emitting module as claimed in claim 1, it is characterised in that this optical texture of each of which is site or micro structure.

4. light emitting module as claimed in claim 1, it is characterised in that wherein these a few optical textures utilize ink printing on this exiting surface.

5. light emitting module as claimed in claim 1, it is characterised in that this reflecting element is arranged at the outside of this light source further.

6. light emitting module as claimed in claim 1, it is characterised in that further this reflecting element extended in this incidence surface relative to the side bright finish of this optical plate.

7. light emitting module as claimed in claim 1, it is characterised in that having a secondary light source further, this secondary light source is arranged at the side bright finish that this incidence surface is relative.

8. light emitting module as claimed in claim 7, it is characterised in that wherein these a few optical textures are less than the distribution density away from this secondary light source in the distribution density near this secondary light source.

9. light emitting module as claimed in claim 7, it is characterised in that wherein this reflecting element is more arranged at the outside of this secondary light source and this light source.