CN2350940Y - Solid light source lamp for liquid crystal projector - Google Patents
Solid light source lamp for liquid crystal projector Download PDFInfo
- Publication number
- CN2350940Y CN2350940Y CN 98228589 CN98228589U CN2350940Y CN 2350940 Y CN2350940 Y CN 2350940Y CN 98228589 CN98228589 CN 98228589 CN 98228589 U CN98228589 U CN 98228589U CN 2350940 Y CN2350940 Y CN 2350940Y
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- CN
- China
- Prior art keywords
- light
- emitting diode
- circuit board
- liquid crystal
- light source
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- Expired - Fee Related
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Abstract
The utility model relates to a solid light source lamp for a liquid crystal projector, which is composed of a lamp wick 2, a lamp shade 4 and a current feed pin 3. The lamp wick 2 is a bundling tube which is composed of a plurality of super bright LEDs. Base pins of the LEDs are welded on a circuit board 1. The LEDs are connected in parallel by conducting wires which are arranged on the circuit board 1. The paralleled LEDs are connected with the current feed pin 3 through a current-limiting resistor and a common connecting wire.
Description
The utility model is relevant with the light emitting source of liquid crystal projector.
In recent years, liquid crystal LCD projector technology was gradually improved, and its main developing direction is high brightness, high-resolution, showed multimedia messages, low cost.According to LCD projector operation principle, the information imaging is to LCD panel, illuminator irradiating liquid crystal sheet and through the optical system enlarging projection to the screen for watching, this shows, illuminator be decision brightness key factor, also influence visual effect, cost and the reliability of LCD projector simultaneously.Known LCD light source of projector lamp is generally the quartz metal halide lamp that adopts vacuum technique to make, only 2000 hours life-span, the LCD projector of Holland PHILIPS Co. adopts so-called UHP lamp, be actually a kind of, it is said that the life-span reaches 5000 hours, but price be very expensive through improved metal halide lamp, in addition, because of metal halide lamp--light conversion efficiency is not high enough, and heating is severe, influences the reliability of complete machine.
The purpose of this utility model provides a kind of simple in structure, and is easy to manufacture, with low cost, luminous efficiency height, the liquid crystal projector solid light source lamp of long service life.
The utility model is achieved in that liquid crystal projector solid light source lamp is by wick 2, lampshade 4 and feed pin 3 are formed, wick 2 is the bundle pipes of being made up of the LED of some super brightness, the pin of light-emitting diode is welded on the circuit board 1, and the lead on the circuit board 1 is with the light-emitting diode parallel connection.Light-emitting diode in parallel is connected on the feed pin 3 with the public lead that is connected by current-limiting resistance W.
Light-emitting diode is red, green, blue three kinds, lead on the circuit board 1 with LED according to luminous red, green, Lan Sanse respectively and be unified into three groups, one end of every group of light-emitting diode is connected with a feed pin 3 by public connection lead, the other end of every group of light-emitting diode connects a current-limiting resistance W1 respectively, W2, and W3 also is connected with another feed pin 3 by public connection lead.
Light-emitting diode is any among red, green, the Lan Sanse, and the lead on the circuit board 1 is connected through public connection lead the light-emitting diode parallel connection again with feed pin 3, and the one end is serially connected with current-limiting resistance W4.
The inwall of the utility model lampshade 4 has reflector layer.
The front end of the utility model lampshade 4 has colour filter 7.
The utlity model has following advantage:
(a) the utility model adopts low-voltage DC supply, and the light that is sent is cold light, and its energy conversion efficiency is higher, and it is less to generate heat;
(b) wick of illuminator of the present utility model adopts LED to manufacture, and LED is the solid luminescence device, thereby the life-span of lamp was 50000 hours;
(c) for the Type B lamp, the colourity of illuminator is purer, and for A type lamp, the ratio of each monochromatic tube is adjusted the colourity of the white light that is sent in size that can be by changing branch road current-limiting resistance W1 of all kinds, W2, W3 resistance on the circuit board respectively or the bundle pipes;
(d) because the speculum in the LED pipe and the effect of illuminator lampshade inwall speculum make it meet the requirement of liquid crystal projector to point-source of light more;
(e) because updating of LED semi-conducting material and tube-making process in recent years, its luminosity increases substantially, and in addition, LED single tube volume is little, is easy to increase number of combinations, so illuminator of the present invention has more the potentiality that improve brightness.
(f) price is not as good as 1/2 of the metal current halide lamp.
Following is accompanying drawing of the present utility model:
Fig. 1 is a structure chart of the present utility model.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the circuit theory diagrams of the utility model A type lamp.
Fig. 4 is the circuit theory diagrams of the utility model Type B lamp.
Following is embodiment of the present utility model:
LCD light source of projector lamp of the present utility model is by wick, and lampshade and feed pin are formed.Wick adopts ultra-high brightness LED to manufacture, wick includes several single tubes LED, form a bundle pipes, this bundle pipes is welded on the circuit board, and each LED in the bundle pipes is linked together in some way by the lead on the circuit board, link to each other with feed pin through current-limiting resistance, public connection lead again, then, together be assemblied in the lampshade.The inwall of lampshade can be made into speculum, to strengthen its optically focused performance.LCD light source of projector lamp of the present invention can be divided into A type and two kinds of models of Type B.A type lamp wick is made of red (R), blue look (B) and the staggered bundle pipes of forming of green (G) single tube LED, and the light of launching is white light; The Type B lamp is three independently illuminators, and the wick of each illuminator is made of several redness, Lan Se and green LED single tube respectively, launches pure red, pure blue look and pure green light respectively.Purer for the colourity that makes illuminator, can add colour filter in the front of lampshade.
A type liquid crystal projector illuminator of the present utility model, as shown in Figure 1, by wick 2, lampshade 4, two feed pin 3 on circuit board 1 and the circuit board thereof are formed, include n1 red LED single tube in the wick 2, a n2 green LED single tube and n3 blue look LED single tube and the arrangement that intermeshes, form a bundle pipes (as shown in Figure 2), this bundle pipes (being wick 2) is welded on the circuit board 1, and link together by the connection lead on the circuit board, output to (as depicted in figs. 1 and 2) on the feed pin 3, the direct current 1 that adds is by the anodal E end input of feed pin 3, be diverted to each red LED single tube R1～Rn1, each green LED single tube G1～Gn2 and Ge Lan look LED single tube B1～Bn3, then, respectively through the redness pipe, green pipe, blue colour tube current-limiting resistance W1 separately, W2 and W3 flow into the negative pole GND (as shown in Figure 3) of feed pin.
Type B liquid crystal projector illuminator of the present utility model is three fully independent but identical redness (R) illuminators of structure, green (G) illuminator and Lan Se (B) illuminator, difference on it and the A type illuminator circuit is by shown in Figure 4, many colour filters 7 make the colourity of red light, green light or blue coloured light purer in the front of lampshade 4.In addition, the wick of Type B illuminator or by the red LED single tube, or by the green LED single tube, or the bundle pipes of being made up of blue look LED single tube constitutes.Circuit is by shown in Figure 4, LED single tube of all kinds parallel connection, and electric current is diverted to each LED single tube I1～In through feed pin 3 anodal E, flow into feed pin negative pole GND through current-limiting resistance W4 then.
Claims (5)
1, a kind of liquid crystal projector solid light source lamp, by wick (2), lampshade (4) and feed pin (3) are formed, it is characterized in that the bundle pipes of wick (2) for forming by the LED of some super brightness, the pin of light-emitting diode is welded on the circuit board (1), and the lead on the circuit board (1) is with the light-emitting diode parallel connection.Light-emitting diode in parallel is connected on the feed pin (3) with the public lead that is connected by current-limiting resistance W.
2, liquid crystal projector solid light source lamp according to claim 1, it is characterized in that light-emitting diode is red, green, blue three kinds, lead on the circuit board (1) with LED according to luminous red, green, Lan Sanse respectively and be unified into three groups, an end of every group of light-emitting diode is connected with a feed pin (3) by public connection lead, the other end of every group of light-emitting diode connects a current-limiting resistance W1 respectively, W2, W3 also is connected with another feed pin (3) by public connection lead.
3, liquid crystal projector solid light source lamp according to claim 1, it is characterized in that light-emitting diode is any among red, green, the Lan Sanse, lead on the circuit board (1) is with the light-emitting diode parallel connection, light-emitting diode in parallel passes through public connection lead again and is connected with feed pin (3), and the one end is serially connected with current-limiting resistance W4.
4, according to claim 1 or 2 or 3 described liquid crystal projector solid light source lamps, it is characterized in that wick (2) has barrel-type casing (5), one end opening, constitute end face by the LED arrangement that is loaded in it, its other end is circuit board (1), has public connection lead (6) to be welded on circuit board (1) exit.
5, liquid crystal projector solid light source lamp according to claim 1 and 2 is characterized in that the front end of lampshade (4) has colour filter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98228589 CN2350940Y (en) | 1998-04-06 | 1998-04-06 | Solid light source lamp for liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98228589 CN2350940Y (en) | 1998-04-06 | 1998-04-06 | Solid light source lamp for liquid crystal projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2350940Y true CN2350940Y (en) | 1999-11-24 |
Family
ID=33978662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98228589 Expired - Fee Related CN2350940Y (en) | 1998-04-06 | 1998-04-06 | Solid light source lamp for liquid crystal projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2350940Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308726C (en) * | 2002-09-25 | 2007-04-04 | 台达电子工业股份有限公司 | Image projection arrangement having integrated type optical diode luminous source |
| CN100490512C (en) * | 2003-10-15 | 2009-05-20 | 精工爱普生株式会社 | Multi-projection display |
-
1998
- 1998-04-06 CN CN 98228589 patent/CN2350940Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308726C (en) * | 2002-09-25 | 2007-04-04 | 台达电子工业股份有限公司 | Image projection arrangement having integrated type optical diode luminous source |
| CN100490512C (en) * | 2003-10-15 | 2009-05-20 | 精工爱普生株式会社 | Multi-projection display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |