CN102722025A - LED (Light Emitting Diode) cold/hot light source film viewer - Google Patents
LED (Light Emitting Diode) cold/hot light source film viewer Download PDFInfo
- Publication number
- CN102722025A CN102722025A CN2012102166248A CN201210216624A CN102722025A CN 102722025 A CN102722025 A CN 102722025A CN 2012102166248 A CN2012102166248 A CN 2012102166248A CN 201210216624 A CN201210216624 A CN 201210216624A CN 102722025 A CN102722025 A CN 102722025A
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- Prior art keywords
- light source
- led
- hot
- cold
- cold light
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Abstract
The invention discloses an LED (Light Emitting Diode) cold/hot light source film viewer. The LED cold/hot light source film viewer comprises a case, a cooling fan, an LED cold light source, a hot light source lamp and a circuit board, wherein the cooling fan, the LED cold light source and the hot light source lamp are arranged on the side wall of the case, and the circuit board is arranged in the case and is used for controlling the LED cold light source and the hot light source lamp. According to the LED cold/hot light source film viewer disclosed by the invention, by combining light sources of two kinds (the cold light source and a hot light source) together, the use is convenient, the trouble of simultaneously using two film viewers is solved, and the brightness is high; and a fluorescent tube is changed into an LED new light source, not only is the brightness of the light source uniform, stepless and adjustable, but also the brightness of a cold light source observing screen is up to 78,000 cd/m<2> (about 240,000Lux) and is doubly increased.
Description
Technical field
the present invention relates to the hot and cold light source viewbox of a kind of LED.
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Background technology
According to the requirement of JB/T4730.2-2005 standard blackness, blackness reaches more than 4.3
.Because domestic viewbox great majority adopt the cold light source manufacturing, domestic cold light source high-high brightness all is difficult to break through 37,680 cd/m 2 (about 120,000Lux), blackness value is a bottleneck below 3.5 so observe the egative film viewbox of high blackness, because the photographic density major part of using at ordinary times is in the 1.6D-2.6D scope, so adopt the cold light source viewbox to meet the demands.Because development and the raising of standard of technology, blackness value also require to improve, be difficult to observation with cold light source at present greater than the egative film of 4.0D.Simultaneously domestic viewbox adopts the fluorescent tube manufacturing, because frequent the switching, the life-span of fluorescent tube is very short, and brightness descends very fast.
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Summary of the invention
the purpose of this invention is to provide a kind of brightness height and the long hot and cold light source viewbox of LED of life-span.
are for solving the problems of the technologies described above; The present invention adopts following technical scheme: the hot and cold light source viewbox of a kind of LED; It comprises casing, be arranged on LED cold light source and thermal light source lamp on the chassis sidewall, be arranged on the circuit board that is used to control LED cold light source and thermal light source lamp in the casing, be printed with the electronic circuit control module on the described circuit board, AC power is converted into constant voltage dc source first power module and second source module, the logarithm dimming controlling module that is connected with the first power module circuitry phase, the LED cold light source that is connected with logarithm dimming controlling module circuitry phase, the thermal light source lamp that is connected with second source module circuitry phase, control first power module and second source module manually/foot-operated control module, be used for the radiating module of circuit board heat radiation.
LED cold light source is the flat point of density light source of LED, and the light source cell of LED cold light source directly is welded on the aluminium sheet.
440～460 of
described light source cell workers, it divides three rows to be evenly distributed on the aluminium sheet.
described casing is processed by aluminium alloy and steel plate.
described thermal light source lamp is the kicker light lamp.
Beneficial effect of the present invention is: the present invention adopts two types light source (cold light source and thermal light source) to combine, and is easy to use, solved the trouble of using two viewboxs simultaneously, and brightness is high; Change fluorescent tube into the LED new light sources, make the brightness of cold light source film viewing screen reach 78,000 cd/m
2
(about 240,000Lux), be doubled.
?
Description of drawings
Accompanying drawing 1 is for utilizing structural representation of the present invention;
Accompanying drawing 2 is the schematic diagram of circuit board;
wherein: 1, casing; 2, LED cold light source; 3, thermal light source lamp.
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Embodiment
are made following detailed description below in conjunction with accompanying drawing to the present invention: the hot and cold light source viewbox of a kind of LED, it comprises casing 1 that aluminium alloy and steel plate process, be arranged on LED cold light source 2 and thermal light source lamp 3 on casing 1 sidewall, be arranged on the circuit board that is used to control LED cold light source 2 and thermal light source lamp 3 in the casing 1.
Be printed with the electronic circuit control module on
described circuit board; AC power is converted into first power module and the second source module of constant voltage dc source; The logarithm dimming controlling module that is connected with the first power module circuitry phase; The LED cold light source that is connected with logarithm dimming controlling module circuitry phase; The thermal light source lamp that is connected with second source module circuitry phase; Control the manual/foot-operated control module of first power module and second source module; The radiating module that is used for the circuit board heat radiation.(because circuit block is that prior art is not given unnecessary details at this).
LED cold light source 2 is the flat point of density light source of LED, and the light source cell of LED cold light source directly is welded on the aluminium sheet.450 of described light source cell workers, it divides three rows to be evenly distributed on the aluminium sheet.
described thermal light source lamp 3 is the kicker light lamp.
To sum up, the present invention has the following advantages:
1, aluminium alloy and armor Plate, good looking appearance;
2, cold light source adopt the flat point of density light source of new LED, divide three groups 450 LED lamp light sources are installed, and are directly welded in heat-dissipating aluminium plate, solve the requirement of heat radiation and light source uniformity coefficient.
3, cold light source and thermal light source combination, it is convenient to let viewbox use, and the thermal light source viewbox that need not to be equipped with high brightness is observed high blackness egative film.
The logarithm stepless dimming of
4, led light source, the variation of brightness is more even when making light modulation.
the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. hot and cold light source viewbox of LED; It is characterized in that: it comprises casing (1), be arranged on LED cold light source (2) and thermal light source lamp (3) on casing (1) sidewall, be arranged on the circuit board that is used to control LED cold light source (2) and thermal light source lamp (3) in the casing (1), be printed with the electronic circuit control module on the described circuit board, AC power is converted into constant voltage dc source first power module and second source module, the logarithm dimming controlling module that is connected with the first power module circuitry phase, the LED cold light source (2) that is connected with logarithm dimming controlling module circuitry phase, the thermal light source lamp (3) that is connected with second source module circuitry phase, control first power module and second source module manually/foot-operated control module, be used for the radiating module of circuit board heat radiation.
2. the hot and cold light source viewbox of LED according to claim 1 is characterized in that: LED cold light source (2) is the flat point of density light source of LED, and the light source cell of LED cold light source directly is welded on the aluminium sheet.
3. the hot and cold light source viewbox of LED according to claim 2 is characterized in that: 440～460 of described light source cell workers, it divides three rows to be evenly distributed on the aluminium sheet.
4. the hot and cold light source viewbox of LED according to claim 1 is characterized in that: described casing (1) is processed by aluminium alloy and steel plate.
5. the hot and cold light source viewbox of LED according to claim 1 is characterized in that: described thermal light source lamp (3) is the kicker light lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102166248A CN102722025A (en) | 2012-06-28 | 2012-06-28 | LED (Light Emitting Diode) cold/hot light source film viewer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102166248A CN102722025A (en) | 2012-06-28 | 2012-06-28 | LED (Light Emitting Diode) cold/hot light source film viewer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102722025A true CN102722025A (en) | 2012-10-10 |
Family
ID=46947836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102166248A Pending CN102722025A (en) | 2012-06-28 | 2012-06-28 | LED (Light Emitting Diode) cold/hot light source film viewer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102722025A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157527Y (en) * | 1993-03-25 | 1994-02-23 | 谢燊 | Hot and cold light source mixed X-ray negative film viewing lamp |
| US20050086840A1 (en) * | 2003-10-24 | 2005-04-28 | Tomaka Jeffrey S. | Portable film viewer |
| CN2927592Y (en) * | 2006-07-27 | 2007-07-25 | 黄新超 | LED slide show |
| CN201514513U (en) * | 2009-09-16 | 2010-06-23 | 李波 | Energy-saving industrial ray film viewer |
| CN102131333A (en) * | 2011-04-28 | 2011-07-20 | 浙江晶日照明科技有限公司 | Dimming method of light emitting diode (LED) |
| CN202025129U (en) * | 2011-04-12 | 2011-11-02 | 李增勇 | Novel X-ray picture viewing machine |
| CN202676982U (en) * | 2012-06-28 | 2013-01-16 | 吴江市宏达探伤器材有限公司 | LED (Light Emitting Diode) cold/hot light source film viewer |
-
2012
- 2012-06-28 CN CN2012102166248A patent/CN102722025A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157527Y (en) * | 1993-03-25 | 1994-02-23 | 谢燊 | Hot and cold light source mixed X-ray negative film viewing lamp |
| US20050086840A1 (en) * | 2003-10-24 | 2005-04-28 | Tomaka Jeffrey S. | Portable film viewer |
| CN2927592Y (en) * | 2006-07-27 | 2007-07-25 | 黄新超 | LED slide show |
| CN201514513U (en) * | 2009-09-16 | 2010-06-23 | 李波 | Energy-saving industrial ray film viewer |
| CN202025129U (en) * | 2011-04-12 | 2011-11-02 | 李增勇 | Novel X-ray picture viewing machine |
| CN102131333A (en) * | 2011-04-28 | 2011-07-20 | 浙江晶日照明科技有限公司 | Dimming method of light emitting diode (LED) |
| CN202676982U (en) * | 2012-06-28 | 2013-01-16 | 吴江市宏达探伤器材有限公司 | LED (Light Emitting Diode) cold/hot light source film viewer |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121010 |