CN103807626A - Illumination device - Google Patents
Illumination device Download PDFInfo
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- CN103807626A CN103807626A CN201210451876.9A CN201210451876A CN103807626A CN 103807626 A CN103807626 A CN 103807626A CN 201210451876 A CN201210451876 A CN 201210451876A CN 103807626 A CN103807626 A CN 103807626A
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- China
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- deviation
- exiting surface
- lighting device
- eyeglass
- refraction
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Abstract
The invention discloses an illumination device, which comprises a light source module and an anti-dazzle grid, wherein the light source module comprises a light outlet surface, the anti-dazzle grid is arranged under the light source module and is provided with at least one deflecting lens at the light outlet surface, the deflecting lens consists of a plurality of cylindrical structures in downward vertical connection, and the long-axis direction of the cylindrical structures is vertical to the normal direction of the light outlet surface. Each cylindrical structure comprises a convex surface facing the light outlet surface and a concave surface backing to the light outlet surface, and in addition, each convex surface and the corresponding concave surface are sequentially connected for forming a saw tooth-shaped reflecting surface.
Description
Technical field
The present invention relates to a kind of lighting device, and particularly relate to a kind of lighting device with anti-dazzle function.
Background technology
Existing lighting device for fear of direct-view dazzle, generally can configure the cell structure of extinction or astigmatism below light source module.For weight reduction, the material of cell structure is generally aluminium alloy or the not high plastic cement material of coating reflectivity.But, no matter adopt absorption or diffuse transmission type grid that oblique ray is weakened, all can reduce efficiency of light, thereby add the lighting device after grid, its efficiency of light will reduce by 15～20% left and right, remain to be further improved.
Summary of the invention
The object of the present invention is to provide a kind of lighting device, Improvement type cell structure be set below exiting surface, can be by oblique ray the normal direction deviation towards the exiting surface of light source module, to prevent the direct incident human eye of oblique ray, cause human eye dazzle and discomfort.
According to an aspect of the present invention, propose a kind of lighting device, comprise a light source module and an anti-dazzle grid.Light source module has an exiting surface.Anti-dazzle grid is disposed at light source module below.Anti-dazzle grid is provided with at least one deviation eyeglass in exiting surface, and deviation eyeglass is made up of a majority connected downward vertically column structure, and the long axis direction of these a little column structures is vertical with the normal direction of exiting surface.Each column structure has towards a crowning of exiting surface and a recessed face of exiting surface dorsad, and each crowning is sequentially connected to form a jagged plane of refraction with each recessed face.
For there is to better understanding above-mentioned and other aspect of the present invention, special embodiment below, and coordinate appended accompanying drawing, be described in detail below:
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the lighting device of one embodiment of the invention;
Fig. 2 is the partial structurtes schematic diagram of lighting device in Fig. 1;
Fig. 3 is the route schematic diagram of oblique ray after deviation in Fig. 2;
Fig. 4 is the partial structurtes schematic diagram of the lighting device of one embodiment of the invention;
Fig. 5 is the partial structurtes schematic diagram of the lighting device of one embodiment of the invention;
Fig. 6 is the route schematic diagram of oblique ray after deviation in Fig. 5.
Main element symbol description
100,200,300: lighting device
102: fixedly use lamp bracket
104: light-reflecting sheet
106: exiting surface
110,210,310: light source module
111～114,211,311: fluorescent tube
120,220,320: anti-dazzle grid
121a, 123a, 321a: crowning
121b, 123b, 321b: recessed face
122,222,322,326: deviation eyeglass
124a ~ 124d, 224,225: column structure
121,123,221,223,321,325: jagged plane of refraction
226: light polarizing film
323,327: plane
C: central shaft
L1, L2: oblique ray
N: normal direction
θ 1, θ 2, θ 4, θ 5: angle
θ 3, θ 6: drift angle
The specific embodiment
The lighting device of the present embodiment, there is the deviation eyeglass of saw-tooth shaped cross section in the configuration of the below of exiting surface, it is light-transmitting materials, and by this deviation eyeglass by oblique ray the normal direction deviation towards the exiting surface of light source module, to prevent the direct incident human eye of oblique ray, cause human eye dazzle and discomfort.For instance, be originally greater than the oblique ray of 50 degree with the angle of the normal direction of exiting surface, after deviation, can make its angle be less than 50 degree, for example, be less than 30 degree or the more low-angle of normal direction deviation towards exiting surface.Therefore, the lighting device of the present embodiment can prevent the human eye dazzle that oblique ray causes, and more can utilize the oblique ray after deviation to increase efficiency of light, so that efficiency of light can reach more than 90%.
Below propose various embodiment and be elaborated, embodiment, in order to as example explanation, is not only the scope in order to limit wish protection of the present invention.
The first embodiment
Fig. 1 illustrates the schematic diagram according to the lighting device 100 of one embodiment of the invention, and Fig. 2 illustrates the partial structurtes schematic diagram of lighting device 100 in Fig. 1.Referring to the 1st and 2 figure, lighting device 100 is to be for example fixed on ceiling or the special lighting of light steelframe or the light fixture for desktop, and it comprises a light source module 110 and an anti-dazzle grid 120.Anti-dazzle grid 120 is disposed at light source module 110 belows, and anti-dazzle grid 120 is provided with at least one deviation eyeglass 122 in the exiting surface 106 of light source module 110.In one embodiment, light source module 110 can be made up of multiple traditional fluorescent lamp pipes 111～114 or 111～114 of light-emitting diode lamp tubes, and it is parallel to fixing using in lamp bracket 102, to form the uniform exiting surface 106 of a brightness on X-Y plane.Fixing with being also provided with a light-reflecting sheet 104 in the top of each fluorescent tube 111～114 in lamp bracket 102, to increase the brightness of the irradiation area of being contained fluorescent tube 111～114 belows.
Please refer to Fig. 2, by the light L1 of the oblique outgoing in side of the fluorescent tube 111 of light source module 110 and L2 not towards the normal direction (as shown in arrow N) of exiting surface 106, if human eye direct-view oblique ray L1 and L2 will not feel well.Therefore, anti-dazzle grid 120 is provided with at least one deviation eyeglass 122, makes after oblique ray L2 deviation, as much as possible towards the normal direction N of exiting surface 106 deviation, to reduce the chance of human eye direct-view oblique ray L2, to prevent human eye dazzle.Though the present embodiment illustrates three deviation eyeglasses 122, in another embodiment, configurable two deviation eyeglasses 122 are in the relative both sides of light source module 110 or configure the side of single deviation eyeglass at light source module 110, and the present invention is not limited this.
Please refer to the amplification view of a deviation eyeglass 122 in Fig. 1.In one embodiment, deviation eyeglass 122 is made up of multiple connected column structure 124a ~ 124d downward vertically.These a little column structure 124a ~ 124d be parallel to each other and its long axis direction (for example X-direction) vertical with the normal direction N of exiting surface 106.In the time that the long axis direction of these a little column structure 124a ~ 124d is parallel to X-direction, can reduce the glare index in Y direction.And in the time that the long axis direction of these a little column structure 124a～124d is parallel to Y direction, can reduce the glare index in X-direction.Deviation eyeglass 122 of the present invention does not limit and is configured on single axial, can be configured in X-axis and/or Y-axis according to actual demand, to adjust each glare index on axially.
Please refer to Fig. 3, it illustrates the route schematic diagram of oblique ray L2 after deviation in Fig. 2.Each column structure has towards a crowning 121a of exiting surface 106 and a recessed face 121b of exiting surface 106 dorsad, and each crowning 121a is sequentially connected to form a jagged plane of refraction 121 and 123 with each recessed face 121b, as shown in Figure 2.
In the present embodiment, the relative both sides of these a little column structure 124a ~ 124d have respectively jagged first refractive face 121 and the second plane of refraction 123.In the time that oblique ray L2 enters via first refractive face 121, because the angle of the normal of oblique ray L2 and crowning 121a is very little, therefore the deviation angle of oblique ray L2 is very little.Then, when oblique ray L2 is during via the second plane of refraction 123 outgoing, because the angle of the normal of oblique ray L2 and the second crowning 123a increases, thus the deviation angle of oblique ray L2 increase, and towards the normal direction N deviation of exiting surface 106, as shown in Figure 3.
In one embodiment, in the face of the first crowning 121a of exiting surface 106 and the second crowning 123a are symmetrically located at the relative both sides of each column structure 124a ~ 124d, and the first crowning 121a and the second crowning 123a with respect to the angle theta 1 of the normal direction N of exiting surface 106 for example between 10～30 spend between.In addition, be symmetrically located at the relative both sides of each column structure 124a ~ 124d back to the first recessed face 121b of exiting surface 106 and the second recessed face 123b, and the first recessed face 121b and the second recessed face 123b with respect to the angle theta 2 of the normal direction N of exiting surface 106 for example between 60～90 degree.In addition, the first crowning 121a is crossing with the first recessed face 121b and form triangular-section, and the vertex angle theta 3 of this triangular-section is for example between 110 degree～60 degree.
In the present embodiment, also because the deviation angle of oblique ray L2 increases, and towards the normal direction N deviation of exiting surface 106, therefore can utilize the oblique ray L2 after deviation to increase efficiency of light, so that efficiency of light can reach more than 90%.
The second embodiment
Please refer to Fig. 4, it illustrates the partial structurtes schematic diagram according to the lighting device 200 of one embodiment of the invention.The lighting device 100 of similar the first embodiment of lighting device 200 of the second embodiment, its difference is: the deviation eyeglass 222 that is positioned at fluorescent tube 211 belows of light source module 210 has a light polarizing film 226.Light polarizing film 226 is disposed on the central shaft C of these a little column structures 224 and 225 that relative both sides have jagged plane of refraction 221,223.
Light polarizing film 226 is for example reflection type polarizing film or absorption-type light polarizing film.The column structure 224 and 225 of deviation eyeglass 222 relative both sides can be made by extrusion modling or roll forming mode, its material is for example the macromolecular materials such as PC, PMMA or PET, and light polarizing film 226 is fixed in deviation eyeglass 222, there is to reach the effect that prevents from looking at straight dazzle and reflected glare simultaneously.Therefore,, when body surface is because of smooth when producing strong reflection ray and causing seeing body surface clearly, this kind of structure can reduce reflection ray energy, to prevent that therefore human eye from not feeling well and cannot see body surface clearly.
The 3rd embodiment
Please refer to Fig. 5, it illustrates the partial structurtes schematic diagram according to the lighting device 300 of one embodiment of the invention.The lighting device 100 of similar the first embodiment of lighting device 300 of the 3rd embodiment, its difference is: multiple staggered the first deviation eyeglasses 322 and the second deviation eyeglass 326 are arranged at fluorescent tube 311 belows of light source module 310.These a little first deviation eyeglasses 322 have respectively the jagged plane of refraction 321 towards the first side (as shown by arrow A), and opposite side can be a plane 323.These a little second deviation eyeglasses 326 have respectively the jagged plane of refraction 325 towards the second side (as shown by arrow B), and opposite side can be a plane 327.
Described in the first embodiment, the first deviation eyeglass 322 is be sequentially connected with each recessed face by each crowning and form with the jagged plane of refraction 321 and 325 of the second deviation eyeglass 326.Please refer to Fig. 6, in the face of the crowning 321a of exiting surface 306 with respect to the angle theta 4 of the normal direction N of exiting surface 306 for example between 15～40 degree.In addition, back to the recessed face 321b of exiting surface 306 with respect to the angle theta 5 of the normal direction N of exiting surface 306 for example between 60～90 degree.In addition, crowning 321a is crossing with recessed face 321b and form triangular-section, and the vertex angle theta 6 of this triangular-section is for example between 105 degree～50 degree.
Please refer to Fig. 5, in the present embodiment, oblique ray L1 can enter in the first deviation eyeglass 322 via plane 323, then via jagged plane of refraction 321 outgoing, and the deviation angle of oblique ray L1 is increased, and towards the normal direction deviation of exiting surface 306.Equally, oblique ray L2 can enter in the second deviation eyeglass 326 via plane 323, then via jagged plane of refraction 325 outgoing, and the deviation angle of oblique ray L2 is increased, and towards the normal direction deviation of exiting surface 306.
Therefore, the lighting device 300 of the present embodiment can reduce the chance of human eye direct-view oblique ray L1 and L2, to prevent human eye dazzle.In addition, can utilize oblique ray L1 and L2 after deviation to increase efficiency of light, so that efficiency of light can reach more than 90%.In addition, because the first deviation eyeglass 322 and the second deviation eyeglass 326 adopt the luminous intensity that is staggered to adjust on different directions, therefore can improve the asymmetric situation of the distribution curve flux of light source.
In sum, although in conjunction with above preferred embodiment, the present invention is disclosed, but it is not in order to limit the present invention.Be familiar with in the technical field of the invention this operator, without departing from the spirit and scope of the present invention, can be used for a variety of modifications and variations.Therefore, protection scope of the present invention should with enclose claim was defined is as the criterion.
Claims (10)
1. a lighting device, comprising:
Light source module, has an exiting surface; And
Anti-dazzle grid, be disposed at this light source module below, this anti-dazzle grid is provided with at least one deviation eyeglass in this exiting surface, and this deviation eyeglass is made up of multiple connected column structures downward vertically, the long axis direction of those column structures is vertical with the normal direction of this exiting surface
Wherein, each column structure has towards a crowning of this exiting surface and a recessed face of this exiting surface dorsad, and each crowning is sequentially connected to form a jagged plane of refraction with each recessed face.
2. lighting device as claimed in claim 1, wherein this jagged plane of refraction is positioned at the relative both sides of those column structures.
3. lighting device as claimed in claim 1, wherein this jagged plane of refraction is positioned at a side of those column structures, and the opposite side of those column structures is a plane.
4. lighting device as claimed in claim 3, wherein this anti-dazzle grid is provided with multiple staggered the first deviation eyeglasses and the second deviation eyeglass in this exiting surface below, those the first deviation eyeglasses have respectively the jagged plane of refraction towards the first side, those the second deviation eyeglasses have respectively another the jagged plane of refraction towards the second side, this first side and this second side each other back to.
5. lighting device as claimed in claim 1, wherein towards respectively this crowning of this exiting surface and the normal direction of this exiting surface folder 10～40 degree.
6. lighting device as claimed in claim 1, wherein respectively this recessed face of this exiting surface and the normal direction of this exiting surface folder 60～90 are spent dorsad.
7. lighting device as claimed in claim 1, wherein the crowning of each column structure and recessed face form a leg-of-mutton cross section.
8. lighting device as claimed in claim 1, wherein this deviation eyeglass has a light polarizing film, and this light polarizing film is disposed on the central shaft of those column structures that relative both sides have this jagged plane of refraction.
9. lighting device as claimed in claim 8, wherein this light polarizing film comprises reflection type polarizing film or absorption-type light polarizing film.
10. lighting device as claimed in claim 1, wherein this deviation eyeglass is light-transmitting materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210451876.9A CN103807626A (en) | 2012-11-12 | 2012-11-12 | Illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210451876.9A CN103807626A (en) | 2012-11-12 | 2012-11-12 | Illumination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103807626A true CN103807626A (en) | 2014-05-21 |
Family
ID=50704794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210451876.9A Pending CN103807626A (en) | 2012-11-12 | 2012-11-12 | Illumination device |
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| Country | Link |
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| CN (1) | CN103807626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023168582A1 (en) * | 2022-03-08 | 2023-09-14 | 瑞仪(广州)光电子器件有限公司 | Optical film, backlight module, display, and light fixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2034234U (en) * | 1987-10-15 | 1989-03-15 | 南海石油深圳开发服务总公司 | High-efficiency grid lamp |
| US20070139932A1 (en) * | 2005-12-20 | 2007-06-21 | Industrial Technology Research Institute | Light source package structure |
| CN202065932U (en) * | 2009-07-17 | 2011-12-07 | 区沃钜 | Aluminium alloy support for fluorescent tube |
-
2012
- 2012-11-12 CN CN201210451876.9A patent/CN103807626A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2034234U (en) * | 1987-10-15 | 1989-03-15 | 南海石油深圳开发服务总公司 | High-efficiency grid lamp |
| US20070139932A1 (en) * | 2005-12-20 | 2007-06-21 | Industrial Technology Research Institute | Light source package structure |
| CN202065932U (en) * | 2009-07-17 | 2011-12-07 | 区沃钜 | Aluminium alloy support for fluorescent tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023168582A1 (en) * | 2022-03-08 | 2023-09-14 | 瑞仪(广州)光电子器件有限公司 | Optical film, backlight module, display, and light fixture |
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Application publication date: 20140521 |