CN201507843U - LED light source template for a rear projection lamp house - Google Patents
LED light source template for a rear projection lamp house Download PDFInfo
- Publication number
- CN201507843U CN201507843U CN2009201770840U CN200920177084U CN201507843U CN 201507843 U CN201507843 U CN 201507843U CN 2009201770840 U CN2009201770840 U CN 2009201770840U CN 200920177084 U CN200920177084 U CN 200920177084U CN 201507843 U CN201507843 U CN 201507843U
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- led
- light source
- effective
- led chip
- light
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- Illuminated Signs And Luminous Advertising (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The utility model discloses a LED light source template for a rear projection lamp house. A plurality of LED lamp plates are fixed on a lamp box back plate and arranged in a regular triangular pattern. The linear distance between the adjacent LED chips is 0.75-1 time of the diameter of the effective diaphragm when the LED chip irradiates. The LED chip is used as the point light source and the effective diaphragm of the emitting light is partly crossed and intersected with the effective diaphragm of the emitting light of the adjacent LED chip. When being intersected, the part not in arbitrary effective diaphragm is greatly reduced and gradually reduced to zero along with the reduction of the linear distance between the adjacent LED chips and the part of the effective diaphragm is overlapped with the other effective diaphragm and the intersection part between the LED chips also form effective overlap of the effective diaphragm and the brightness is obviously increased, therefore the light is distributed more reasonable and uniform and the whole light emitting effect is more uniform to increase the uniformity of the light provided by the LED light source template.
Description
Technical field
The utility model relates to a kind of back projection type lamp box, specifically, relates to led light source template wherein.
Background technology
Led light source is progressively substituting traditional incandescent lamp, fluorescent lamp at present because it has efficient, energy-conservation and feature of long life, becomes the main flow that use in market.But because present its price comparison costliness, use in general occasion, it is too high that cost seems, but in the long-time environment that uses, as light source, because its considerable energy saving characteristic reduces its use cost greatly as the back projection type lamp box, therefore, all adopt the light source of led light source in the time of many as the back projection type lamp box.
Led light source is a spot light, when it is used as the light source of back projection type lamp box, usually a plurality of led chips evenly is arranged on the LED lamp box backboard with matrix form, forms the light source template, can provide more uniform illumination like this.But this template of evenly arranging with matrix form, illumination are still even inadequately, as shown in Figure 1, at the rectangular centre position A that four led chips 101 surround, intensity of illumination is relatively low, and the illumination uniformity so still is not fine, and the picture that projection is gone out attractive in appearance still has certain influence.
Summary of the invention
Goal of the invention of the present utility model is to overcome the deficiencies in the prior art, provide a kind of be used for the back projection type lamp box, the better led light source template of the illumination uniformity.
For achieving the above object, the utility model is used for the led light source template of back projection type lamp box, comprise LED lamp plate and lamp box backboard that led chip and aluminium base are fixed together and form, a plurality of LED lamp plates are fixed on the lamp box backboard, it is characterized in that, the LED lamp plate is arranged with positive triangular pattern, and the air line distance of the led chip that each is adjacent is led chip 0.75～1 times of effective f-number diameter when luminous.
Goal of the invention of the present utility model is achieved in that
Because the LED lamp plate is arranged with positive triangular pattern, led chip also distributes with positive triangular pattern, and the air line distance of the led chip that each is adjacent is led chip 0.75～1 times of effective f-number diameter when luminous, each led chip is as spot light like this, its effective f-number that sends light is sent to tangent with the effective f-number part that adjacent led chip sends light mutually, even like this when tangent, in the zone that any three adjacent led chips surround, the part in any effective f-number does not reduce greatly yet.Because led chip is higher as the brightness at spot light effective f-number center, edge brightness is lower, therefore, effective f-number can partly intersect, like this, along with reducing of the air line distance of adjacent led chip, the part in effective f-number arbitrarily progressively is not contracted to zero yet, and the effective f-number that forms part in the regional center that any three adjacent led chips surround superposes, and brightness is obviously strengthened.In addition, led chip intersection between any two also can form the effective f-number stack, and brightness also can obviously be strengthened, thereby makes light obtain average distribution more rationally, whole to go out light effect more even, thereby improved the uniformity that the led light source template provides illumination.
Description of drawings
Fig. 1 is the led light source formwork structure figure that is used for the back projection type lamp box in the prior art;
Fig. 2 is a kind of specific embodiment structure chart of led light source template that the utility model is used for the back projection type lamp box;
Fig. 3 is the cut-away section structure chart of led light source template shown in Figure 2;
Fig. 4 is the another kind of specific embodiment structure chart of led light source template that the utility model is used for the back projection type lamp box.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment that the utility model is used for the led light source template of back projection type lamp box is elaborated, so that described those skilled in the art understand the utility model better.What need point out is that although similar parts appear in the different accompanying drawings, they are endowed similar reference numerals.In addition, in the following description, when perhaps the detailed description of known function that adopts and design can desalinate subject content of the present invention, these were described in here and will be left in the basket.
Fig. 2 is a kind of specific embodiment structure chart of led light source template that the utility model is used for the back projection type lamp box.
In the present embodiment, as shown in Figure 2, led chip 101 and aluminium base 102 form LED lamp plate 1, promptly single LEDs spot light after the two welds together.A plurality of LED lamp plates 1 are fixed on the lamp box backboard 2 by rivet, the LED light source consisting template.Lamp box backboard 2 is an aluminium sheet.
As shown in Figure 2, LED lamp plate 1 is arranged with positive triangular pattern, and the air line distance of each adjacent led chip 101 equals the led chip 101 effective f-number 3 diameter D when luminous.Each led chip 101 is as spot light, its send the effective f-number 3 of light and effective f-number 3 that adjacent led chip 101 sends light tangent, in the zone that any three adjacent led chips 101 surround, the part B in any effective f-number 3 does not reduce greatly like this.
Plurality of LEDs chip spot light projects on the even tabula rasa from the lamp box back side, through repeatedly reflecting to form evenly soft light.
Fig. 3 is the cut-away section structure chart of led light source template shown in Figure 2.
As shown in Figure 3, because led chip is spot light, it goes out light effect can regard a circle as, and the center of circle is a led chip, and effective f-number 3 diameters when led chip 101 is luminous are D, the size of effective f-number 3 depend on led chip with and to the distance of even tabula rasa.
Back projection type lamp box structure according to reality calculates suitable spacing, and in the present embodiment, effective f-number 3 diameter D are 137mm, and after the installation, whole as can be seen bright dipping is softer, even, the possibility of having avoided hot spot to occur basically.
Fig. 4 is the another kind of specific embodiment structure chart of led light source template that the utility model is used for the back projection type lamp box.
In the present embodiment, LED lamp plate 1 is arranged with positive triangular pattern, and the air line distance of each adjacent led chip 101 equals led chip 101 0.75 times of effective f-number 3 diameters, i.e. 0.75D when luminous.Each led chip 101 is as spot light, and it sends the effective f-number 3 of light and effective f-number 3 parts that adjacent led chip 101 sends light intersect.As shown in the figure, the edge of the effective f-number 3 of led chip 101 partially overlaps, and the brightness of this part has obtained reinforcement, thereby makes light obtain average distribution more rationally, whole to go out light effect more even, thereby improved the uniformity that the led light source template provides illumination.
Although above the illustrative specific embodiment of the utility model is described; but should be understood that; the utility model is not limited to the scope of the specific embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present utility model determined in; these variations are conspicuous, and all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (1)
1. led light source template that is used for the back projection type lamp box, comprise LED lamp plate and lamp box backboard that led chip and aluminium base are fixed together and form, a plurality of LED lamp plates are fixed on the lamp box backboard, it is characterized in that, the LED lamp plate is arranged with positive triangular pattern, and the air line distance of the led chip that each is adjacent is led chip 0.75～1 times of effective f-number diameter when luminous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201770840U CN201507843U (en) | 2009-09-27 | 2009-09-27 | LED light source template for a rear projection lamp house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201770840U CN201507843U (en) | 2009-09-27 | 2009-09-27 | LED light source template for a rear projection lamp house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507843U true CN201507843U (en) | 2010-06-16 |
Family
ID=42468970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201770840U Expired - Fee Related CN201507843U (en) | 2009-09-27 | 2009-09-27 | LED light source template for a rear projection lamp house |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507843U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261601A (en) * | 2010-05-31 | 2011-11-30 | 胡小萍 | Light source module |
| CN103048792A (en) * | 2011-10-11 | 2013-04-17 | 深圳市光峰光电技术有限公司 | Light source system and laser light source |
-
2009
- 2009-09-27 CN CN2009201770840U patent/CN201507843U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261601A (en) * | 2010-05-31 | 2011-11-30 | 胡小萍 | Light source module |
| CN103048792A (en) * | 2011-10-11 | 2013-04-17 | 深圳市光峰光电技术有限公司 | Light source system and laser light source |
| WO2013053264A1 (en) * | 2011-10-11 | 2013-04-18 | 深圳市光峰光电技术有限公司 | Light source system and laser light source |
| CN103048792B (en) * | 2011-10-11 | 2015-10-07 | 深圳市光峰光电技术有限公司 | Light-source system and LASER Light Source |
| US9819154B2 (en) | 2011-10-11 | 2017-11-14 | Appotronics Corporation Limited | Light source system and laser light source |
| US10530131B2 (en) | 2011-10-11 | 2020-01-07 | Appotronics Corporation Limited | Light source system and laser light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510030 Guangdong city of Guangzhou province Zhongshan five road No. 219 CTS commercial city 16 floor Patentee after: Guangzhou Metro Corporation Patentee after: Sichuan Sunfor Light Co., Ltd. Address before: 510030 Guangdong city of Guangzhou province Zhongshan five road No. 219 CTS commercial city 16 floor Patentee before: Guangzhou Metro Corporation Patentee before: Sichuan Sunfor Lighting Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20170927 |