CN203223820U - Liquid crystal display television backlight device - Google Patents
Liquid crystal display television backlight device Download PDFInfo
- Publication number
- CN203223820U CN203223820U CN 201320280478 CN201320280478U CN203223820U CN 203223820 U CN203223820 U CN 203223820U CN 201320280478 CN201320280478 CN 201320280478 CN 201320280478 U CN201320280478 U CN 201320280478U CN 203223820 U CN203223820 U CN 203223820U
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- CN
- China
- Prior art keywords
- printed circuit
- backlight device
- liquid crystal
- crystal display
- emission sheet
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a liquid crystal display television backlight device and belongs to the field of liquid crystal display televisions. The liquid crystal display television backlight device comprises a back plate, an emission piece and a diffusion plate. Printed circuit boards are fixed in the back plate. A plurality of LED lamps are arranged on each printed circuit board. A plurality of small holes are formed in the emission piece which is pressed on the printed circuit boards. The LED lamps are placed in the small holes of the emission piece. The diffusion plate is fixed on the back plate and covers the emission piece. A plurality of spherical protrusions are arranged on the surface of the diffusion plate and correspond to the small holes in the emission piece. The liquid crystal display television backlight device is simple in structure and reasonable in design, the device comprises the back plate, the emission piece and the diffusion plate in existing resources, a light guiding plate is of no need, the technology is simple, cost is low, and light using rate is effectively improved.
Description
Technical field
The utility model relates to LCD TV, especially a kind of LCD TV backlight device.
Background technology
Along with improving constantly of living standard, people are increasing to the demand of LCD TV, thereby make the resource scarcity of LGP, and the complex process of current production LGP, the cost height, it is big to do dynamic backlight adjusting time unit control band, regulating effect is also bad, and is energy-conservation not outstanding.
Summary of the invention
Technical assignment of the present utility model is a kind of LCD TV backlight device that provides at above the deficiencies in the prior art.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of LCD TV backlight device, comprise backboard, emission sheet and diffuser plate, printed circuit board is fixedly arranged in backboard, be provided with some LED lamps at each printed circuit board, be provided with some apertures at the emission sheet, this emission sheet is pressed on the printed circuit board, described LED lamp is positioned at the aperture of emission sheet, described diffuser plate is fixed on above the backboard and covers the emission sheet, be provided with some hemisphere juts on the surface of described diffuser plate, described hemisphere jut is corresponding with the aperture on the emission sheet.
Little internal surface of hole at described emission sheet is provided with reflectance coating, can effectively improve the utilization rate of light.
Be provided with reflectance coating at described printed circuit board, not only can avoid light leak, and improved the utilization rate of light.
Advantage of the present utility model is simple in structure, and is reasonable in design, adopts backboard, emission sheet and diffuser plate in the existing resource to make, and do not need LGP, and technology is simple, cost is low, and has effectively improved the utilization rate of light.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with Figure of description the utility model is done following detailed description.
As shown in the figure, a kind of LCD TV backlight device, comprise backboard 1, emission sheet 2 and diffuser plate 3, printed circuit board 4 is fixedly arranged in backboard 1, be provided with some LED lamps 5 at each printed circuit board 4, be provided with some apertures 6 at emission sheet 2, this emission sheet 2 is pressed on the printed circuit board 4, described LED lamp 5 is positioned at the aperture 6 of emission sheet 2, described diffuser plate 3 is fixed on above the backboard 1 and covers emission sheet 2, be provided with some hemisphere juts 7 on the surface of described diffuser plate 3, described hemisphere jut 7 is corresponding with the aperture 6 on the emission sheet 2.
Aperture 6 inner surfaces at described emission sheet 2 are provided with reflectance coating, can effectively improve the utilization rate of light.
Be provided with reflectance coating at described printed circuit board 4, not only can avoid light leak, and improved the utilization rate of light.
The utility model fixedly has printed circuit board 4 in backboard 1, emission sheet 2 is pressed on the printed circuit board 4, diffuser plate 3 covers emission sheet 2, adopt backboard 1, emission sheet 2 and diffuser plate 3 in the existing resource to make, do not need LGP, technology is simple, cost is low, not only can avoid light leak, and has improved the utilization rate of light.
Claims (3)
1. LCD TV backlight device, comprise backboard, emission sheet and diffuser plate, printed circuit board is fixedly arranged in backboard, be provided with some LED lamps at each printed circuit board, it is characterized in that being provided with some apertures at the emission sheet, this emission sheet is pressed on the printed circuit board, described LED lamp is positioned at the aperture of emission sheet, described diffuser plate is fixed on above the backboard and covers the emission sheet, be provided with some hemisphere juts on the surface of described diffuser plate, described hemisphere jut is corresponding with the aperture on the emission sheet.
2. a kind of LCD TV backlight device according to claim 1 is characterized in that being provided with reflectance coating at the little internal surface of hole of described emission sheet.
3. a kind of LCD TV backlight device according to claim 1 is characterized in that being provided with reflectance coating at described printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320280478 CN203223820U (en) | 2013-05-22 | 2013-05-22 | Liquid crystal display television backlight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320280478 CN203223820U (en) | 2013-05-22 | 2013-05-22 | Liquid crystal display television backlight device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223820U true CN203223820U (en) | 2013-10-02 |
Family
ID=49250824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320280478 Expired - Fee Related CN203223820U (en) | 2013-05-22 | 2013-05-22 | Liquid crystal display television backlight device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043830A (en) * | 2019-04-11 | 2019-07-23 | 广东美的厨房电器制造有限公司 | Lighting device and micro-wave oven |
-
2013
- 2013-05-22 CN CN 201320280478 patent/CN203223820U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043830A (en) * | 2019-04-11 | 2019-07-23 | 广东美的厨房电器制造有限公司 | Lighting device and micro-wave oven |
| CN110043830B (en) * | 2019-04-11 | 2021-07-27 | 广东美的厨房电器制造有限公司 | Lighting device and microwave oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG SANMAO ELECTRONIC CO., LTD. Free format text: FORMER OWNER: YUAN SHUSHENG Effective date: 20150506 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150506 Address after: Shanghai road 276800 Shandong Rizhao City economic and Technological Development Zone, the middle LIANLI business park Patentee after: SHANDONG SANMAO ELECTRONIC CO., LTD. Address before: 276800 Shanghai Road, Shandong Province Economic and Technological Development Zone Rizhao City LIANLI enterprise hospital Patentee before: Yuan Shusheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20160522 |