CN206757089U - A kind of desk lamp light guide plate - Google Patents
A kind of desk lamp light guide plate Download PDFInfo
- Publication number
- CN206757089U CN206757089U CN201720385462.9U CN201720385462U CN206757089U CN 206757089 U CN206757089 U CN 206757089U CN 201720385462 U CN201720385462 U CN 201720385462U CN 206757089 U CN206757089 U CN 206757089U
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- rib
- desk lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of desk lamp light guide plate, wedge shaped shape, including the medial surface as incidence surface, the lower surface as exiting surface, the upper surface as shady face and the lateral surface relative with the medial surface, the upper surface is obliquely installed with respect to the lower surface so that the thickness of the light guide plate is gradually thinned from the medial surface towards the lateral surface direction, the upper surface is furnished with micro-structural reflective spot, the lower surface is furnished with micro-structural rib, and the both ends of the crestal line of the rib are respectively directed to the medial surface and the lateral surface；Light enters after light guide plate, runs into the reflective spot and is totally reflected, runs into the rib and be refracted into the external world.Micro-structural rib reduces angle of light, is emitted to the external world diagonally forward, reaches polarization effect with this, improves uniformity and light emission rate.Micro-structural reflective spot on shady face, reflection of the light in shady face can be broken up, form diffusing reflection, so as to further destroy light experiences total internal reflection, more light slant out from exiting surface, improve light extraction efficiency.
Description
Technical field
It the utility model is related to a kind of desk lamp light guide plate.
Background technology
Desk lamp common at present is mostly straight-down negative illumination mode, is just directly over diffusion shell or reflector light extraction, is realized
Tabletop lighting, illumination range are concentrated mainly on below lamp holder, cause desktop glazed thread uniformity poor, and light reflection causes
Dazzle is too strong, and comfort level is relatively low.
Utility model content
The utility model provides a kind of desk lamp light guide plate, which overcomes the deficiency present in background technology.This practicality is new
Technical scheme is used by type solves its technical problem：
A kind of desk lamp light guide plate, wedge shaped shape, including the medial surface as incidence surface, the lower surface as exiting surface, work
Upper surface and the lateral surface relative with the medial surface for shady face, the upper surface is obliquely installed with respect to the lower surface so that this is led
The thickness of tabula rasa is gradually thinned from the medial surface towards the lateral surface direction, and the upper surface is furnished with micro-structural reflective spot, the lower surface
Micro-structural rib is furnished with, the both ends of the crestal line of the rib are respectively directed to the medial surface and the lateral surface；
Light enters after light guide plate, runs into the reflective spot and is totally reflected, runs into the rib and be refracted into
It is extraneous.
Compared with background technology, it has the following advantages that the technical program：
Shady face has certain gradient, at a certain angle with exiting surface, forms wedge shape, and it reduces light in backlight
The angle of reflection in face, but still meet total reflection condition, when light incides exiting surface, micro-structural rib reduces angle of light, originally
The light of energy experiences total internal reflection, its incidence angle diminish and reflected, be emitted to the external world diagonally forward, reach polarization effect with this,
Improve uniformity and light emission rate.Micro-structural reflective spot on shady face, reflection of the light in shady face can be broken up, be formed unrestrained anti-
Penetrate, so as to further destroy light experiences total internal reflection, more light slant out from exiting surface, improve light guide plate light extraction efficiency.
Rib can allow light to be scattered along light source axial direction (parallel with light source orientation), and light is received in into effective irradiation area
It is interior.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 depicts the schematic top plan view of the utility model desk lamp light guide plate.
Fig. 2 depicts the schematic perspective view of desk lamp light guide plate shown in Fig. 1.
Fig. 3 depicts the sectional view along line A-A among Fig. 1.
Fig. 4 depicts the sectional view along line B-B among Fig. 1.
Embodiment
It refer to Fig. 1 to Fig. 4, a kind of desk lamp light guide plate of the present utility model, wedge shaped shape, including as in incidence surface
Side 10, the lower surface 20 as exiting surface, the upper surface 30 as shady face and the lateral surface 40 relative with the medial surface.Should
Upper surface 30 is obliquely installed with respect to the lower surface 20 so that the thickness of the light guide plate is from the medial surface 10 towards the direction of lateral surface 40
Gradually it is thinned.The upper surface 30 is furnished with micro-structural reflective spot 50, and the reflective spot 50 can be totally reflected light.The lower surface 20
Micro-structural rib 60 is furnished with, the both ends of the crestal line of the rib 60 are respectively directed to the medial surface 10 and the lateral surface 40, the rib
Bar 60 makes angle of light reduction generation refraction is oblique to be mapped to the external world, reaches polarization effect with this.
Light source 70 is uniformly arranged along the length of medial surface 10, and light enters after light guide plate, runs into the reflective spot 50 and sends out
Raw total reflection, runs into the rib 60 and is refracted into the external world.
The size linear arrays such as the reflective spot 50.Or the reflective spot 50 can also be that size gradually increases between non-grade
Away from arrangement.The reflective spot 50 is the white site of bat printing.Or the reflective spot 50 is spherical, ellipticity, pyramid-shaped, circle
Taper or polygon are raised.Preferably, the upper surface 30 covering reflector or reflective sheeting, for the light reflection partly reflected away
Return light guide plate.
The spacing side by side of micro-structural rib 60 is set, and light enters after light guide plate, and light reaches the adjacent ribs of lower surface 20
It is totally reflected during interval between bar 60, improves the irradiation uniformity and the effective rate of utilization of light.
It is described above, only the utility model preferred embodiment, therefore the utility model implementation can not be limited according to this
Scope, i.e., the equivalent changes and modifications made according to the utility model patent scope and description, it is new all should still to belong to this practicality
In the range of type covers.
Claims (6)
1. a kind of desk lamp light guide plate, wedge shaped shape, including the medial surface as incidence surface, the lower surface as exiting surface, conduct
The upper surface of shady face and the lateral surface relative with the medial surface, the upper surface is obliquely installed with respect to the lower surface so that the leaded light
The thickness of plate is gradually thinned from the medial surface towards the lateral surface direction, it is characterised in that：The upper surface is furnished with micro-structural reflective spot,
The lower surface is furnished with micro-structural rib, and the both ends of the crestal line of the rib are respectively directed to the medial surface and the lateral surface；
Light enters after light guide plate, runs into the reflective spot and is totally reflected, runs into the rib and be refracted into the external world.
A kind of 2. desk lamp light guide plate according to claim 1, it is characterised in that：The size linear array such as described reflective spot,
Or the reflective spot size gradually increases non-equidistantly arrangement.
A kind of 3. desk lamp light guide plate according to claim 1 or 2, it is characterised in that：The reflective spot is the white of bat printing
Site.
A kind of 4. desk lamp light guide plate according to claim 1 or 2, it is characterised in that：The reflective spot is spherical, oval
Shape, pyramid-shaped, coniform or polygon are raised.
A kind of 5. desk lamp light guide plate according to claim 1, it is characterised in that：The upper surface covers reflector or reflective
Paper.
A kind of 6. desk lamp light guide plate according to claim 1, it is characterised in that：The rib spacing side by side of micro-structural is set,
Light enters after light guide plate, and light is totally reflected when reaching the interval between the adjacent rib in the lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720385462.9U CN206757089U (en) | 2017-04-13 | 2017-04-13 | A kind of desk lamp light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720385462.9U CN206757089U (en) | 2017-04-13 | 2017-04-13 | A kind of desk lamp light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206757089U true CN206757089U (en) | 2017-12-15 |
Family
ID=60613953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720385462.9U Active CN206757089U (en) | 2017-04-13 | 2017-04-13 | A kind of desk lamp light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206757089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175654A (en) * | 2021-04-16 | 2021-07-27 | 尹松 | Optical structure and lamps and lanterns of polarisation illumination |
-
2017
- 2017-04-13 CN CN201720385462.9U patent/CN206757089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175654A (en) * | 2021-04-16 | 2021-07-27 | 尹松 | Optical structure and lamps and lanterns of polarisation illumination |
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