CN2927592Y - LED slide show - Google Patents
LED slide show Download PDFInfo
- Publication number
- CN2927592Y CN2927592Y CNU2006200308653U CN200620030865U CN2927592Y CN 2927592 Y CN2927592 Y CN 2927592Y CN U2006200308653 U CNU2006200308653 U CN U2006200308653U CN 200620030865 U CN200620030865 U CN 200620030865U CN 2927592 Y CN2927592 Y CN 2927592Y
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- led
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an LED film viewer, comprising a control circuit, a light-adjusting circuit, a current limiting circuit and an LED group, wherein the control circuit is respectively connected with the rectification circuit and the light-adjusting circuit, the light-adjusting circuit is connected with the current limiting circuit, while the current limiting circuit is connected with the LED group. Compared with the incandescent lamp and fluorescent lamp, the utility model has the advantages of small-size LED (multiple, various combinations), low heat productivity (without heat radiation), low power consumption (low-voltage, low current starter), long period of usage (over 10,000 hours), swift reaction velocity (can be operated in high frequency), environmental protection (shock and impact resistance, waste recycling and no pollution), without the shortcomings of the incandescent lamp and fluorescent lamp with high power consumption, fragile and mercury pollution in waste. The luminescence intensity is convenient to be adjusted by modulating the electricity intensity.
Description
Technical field
The utility model relates to a kind of viewbox of observing the industrial radiography egative film, especially relates to a kind of LED viewbox.
Background technology
Viewbox is the indispensable equipment that industrial detection is observed radiography film.In early days employed is the thermal light source viewbox, and it is the halogen tungsten lamp as light source with a 500W, belongs to heat radiation light source, and caloric value is big, and its tube wall temperature need install the high-power fan heat radiation additional about spending up to 600, and noise is big; But radiating effect is still bad, and watch window temperature height can make the radiographic film distortion, and tablet quality is commented in influence, even causes erroneous judgement, and the viewbox of the type is eliminated.
At present, detect the viewbox that industry is generally used, adopt fluorescent tube or cold light source fluorescent tube to make light source, the problem of existence is, although one be so-called cold light source fluorescent tube, thermal radiation arranged still, and caloric value is big, need install the radiator fan heat radiation additional; Two, the blackness scope of industrial x-ray egative film is generally between 1.5～4.0, even higher, in order to observe the bigger egative film of blackness, needs the viewbox of high brightness, and standard GB 11226-89 requires: the high-high brightness of viewbox＞10
5Mcd generally adopts many fluorescent tubes (4～8), and volume is big, and power consumption is high; Three, owing to comment the work characteristics of sheet, need frequent starting, make the fluorescent tube that the original life-span is long, the life-span is shorter.
The utility model content
The purpose of this utility model just is to provide the LED viewbox of a kind of more reasonable structure, longer service life.
The purpose of this utility model can realize by following measure:
The utility model comprises control circuit, light adjusting circuit, current-limiting circuit and light-emitting diode (LED) group row, wherein, control circuit is connected respectively to rectification circuit and light adjusting circuit, and light adjusting circuit is connected to current-limiting circuit, and current-limiting circuit is connected to light-emitting diode (LED) group.
Control circuit is made up of control switch and control relay in the utility model.Wherein, control switch is an inductive switch.And inductive switch is infrared sensing switch or electromagnetic induction switch.Perhaps, control switch is a touch switch.Touch switch should be pedal type switch.Light adjusting circuit is voltage type light adjusting circuit or Current Control formula light adjusting circuit.Light-emitting diode (LED) group adopts high brightness LED.
The utility model is owing to adopt light-emitting diode (LED) group row formula circuit, promptly adopt super brightness diode (LED) to make light source, and set up infrared sensing switch control, not only overcome the shortcoming of traditional viewbox, and had the not available lot of advantages of traditional viewbox.Compare with incandescent osram lamp and fluorescent lamp, LED have volume little (many, multiple combination), caloric value low (not having thermal radiation), power consumption little (low-voltage, low current starting), life-span long (more than 10,000 hours), reaction speed fast (can at high-frequency operation), environmental protection (shatter-proof, shock-resistant be difficult for broken, discarded object is recyclable, do not pollute), less than shortcomings such as the high power consumption of incandescent lamp bulb, the frangible and mercurous pollution problems of fluorescent lamp discarded object.The electric current power of passing through by modulation is the power of modulated luminescence easily.That summarizes says that this utility model mainly contains following advantage:
1, adopt the LED of high brightness to replace incandescent osram lamp and fluorescent lamp.The brightness height, the life-span is long, shock resistance good, energy-conservation environmental protection again.
2, realize the controllable silicon continuous light tuning.
Adopt infrared switch and foot switch and usefulness, easy to use.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is done with detailed description below in conjunction with drawings and Examples:
As shown in the figure, the utility model comprises control circuit, light adjusting circuit, current-limiting circuit and light-emitting diode (LED) group row, and wherein, control circuit is connected respectively to rectification circuit and light adjusting circuit, light adjusting circuit is connected to current-limiting circuit, and current-limiting circuit is connected to light-emitting diode (LED) group.Control circuit is made up of control switch and control relay.Wherein, control switch is an inductive switch.And inductive switch is infrared sensing switch or electromagnetic induction switch.Perhaps, control switch is a touch switch.Touch switch should be pedal type switch.Light adjusting circuit is voltage type light adjusting circuit or Current Control formula light adjusting circuit.Light-emitting diode (LED) group adopts high brightness LED.In addition, circuit also can increase accessories such as radiator fan, transformer or rectification circuit.
Operation principle of the present utility model is as follows: the utility model adopts the LED of high brightness to make light source, and its quantity is not all right with one or several LED, needs that hundreds of is individual to be combined.So just need to solve following technical problem:
1, the type selecting of high-brightness LED
The brightness of brightness: LED has from the product of 700～12000mcd, and the blackness of industrial x-ray egative film is bigger, and generally in 1.5～4.0 scopes, even blackness surpasses 4.0 egative film and also have, so select the high LED of brightness as far as possible.Consider other factors, by a large amount of tests, we select the LED of the super brightness of 1200mcd.
The light emission angle: it is even to accomplish that a hundreds of LED is transmitted into the light of observation window, will consider that at first LED divides angle of departure degree.Divide angle of departure degree to have in 25～160 degree scopes, under the identical situation of other performance, the big more brightness of angle is more little, and on the contrary, angle is more little, and brightness is high more.So under the situation of taking into account the brightness and the uniformity, the little LED of selected angle tries one's best.By a large amount of tests, we select the LED of 120 degree.
Diameter: the LED diameter generally have Φ 3, Φ 5, Φ 10 ... consider the uniformity of a plurality of LED emission light, by test, we select diameter is the LED of Φ 5.
2, the arrangement of LED
A hundreds of LED arranges in the circuit board, arrangement mode is nothing more than polyphone and in parallel, but, what strings, what are individual also, can guarantee that circuit is easy to control, reliable and stable, power consumption is low, current-limiting resistance generates heat minimum etc., and we have done a large amount of work, finally be defined as the spread pattern in the circuit diagram, see circuit diagram for details.
3, the blackness of industrial x-ray egative film is set forth as the front, and there have height to have to be low, just need adjustable brightness, realizes continuous light tuning.Standard GB 11226-89 also requires adjustable brightness.Present employed viewbox mostly is the stepping light modulation, and we adopt LED to make light source, and continuous light tuning implements with regard to relatively easy many, realizes with the SCR control angle of flow, sees circuit diagram for details.
4, in egative film evaluation process, can not allow viewbox be operated in high brightness always, not so high light causes damage to the staff, generally is discontinuous operation, and common viewbox is to adopt foot switch to realize.We adopt infrared sensing switch and foot switch and usefulness first, can select voluntarily according to user of service's work habit, and are easy to use.
Circuit connects and principle:
Circuit mainly contains four parts and forms silicon-controlled voltage regulation circuit, full bridge rectifier, infrared induction/foot switch circuit, diode and current-limiting circuit.Power supply 220V 50Hz.
Silicon-controlled voltage regulation circuit: form by controllable silicon SCR 1, potentiometer W1, resistance R 6 and R7, capacitor C 1, as shown in Figure 1.Often open node k1 and adjustable potentiometer W1 polyphone for one of relay J, be parallel to the anode and the trigger electrode of controllable silicon SCR 1 then, when foot switch or near switch motion K1 closure, change the angle of flow of controllable silicon SCR 1 by regulator potentiometer W1, thereby the change output voltage, the purpose of realization light modulation.R7 and capacitor C 1 parallel connection connect the negative pole and the trigger electrode of controllable silicon SCR 1 respectively.
Power supply opening, if foot switch or infrared sensing switch are failure to actuate, K1 often opens, and adjustable potentiometer W1 is inoperative, triggering signal is provided for controllable silicon SCR 1 by resistance R 7, makes its conducting, and all LED light with minimum brightness.
Full bridge rectifier: form by rectifying tube D1, D2, D3, D4.Purpose is the AC rectification output DC 220V.The common port of the common port of rectifier diode D1 and D2 and diode D3 and D4 is as the input of rectifier circuit, input signal is～the 220V alternating current, the anodal common port (-) of the common port (+) of diode D2 and D4 negative pole, diode D1 and D2 is as the output of rectification circuit, (+) utmost point links to each other with the current-limiting resistance of diode and current-limiting circuit, and (-) utmost point links to each other with the negative pole of controllable silicon SCR 1.
Infrared induction/foot switch circuit: have infrared induction (approaching) transducer JJC, foot switch K and relay J to form.On infrared induction transducer JJC, foot switch K and the relay J market sale of finished goods is arranged all, directly buy and get final product.Proximity transducer JJC, foot switch K link to each other with viewbox by the control jack that is contained on the viewbox, and the two can not use simultaneously, and any can both realize control, design like this, and the user can be according to the use habit of oneself, optional one.
Infrared induction transducer JJC and foot switch are relation in parallel in circuit, a relay termination J, 2 ends of another termination power and the input of full bridge rectifier; Another termination 2A insurance of relay J and another input of full bridge rectifier.Hot outer inductive pick-up JJC or foot switch action, relay J gets electric work, electric shock K1 closure.
Diode and current-limiting circuit: have 5 tunnel parallel connections, each Lu Youyi current-limiting resistance and 72 diodes are connected in series, and are the loads of circuit.(+) output of one termination full bridge rectifier of parallel circuits, the anode of another termination controllable silicon SCR 1 of parallel circuits.
5 road parallel circuitss are respectively: current-limiting resistance R1 and diode V1 ~ V72, current-limiting resistance R2 and diode V73 ~ V144, current-limiting resistance R3 and diode V145 ~ V215, current-limiting resistance R4 and diode V216 ~ V288, current-limiting resistance R5 and diode V289 ~ V360.The effect of current-limiting resistance R1, R2, R3, R4, R5 is that the protection light-emitting diode is operated in the rated operational current, and it is excessive to be unlikely to electric current, damages light-emitting diode.
Claims (10)
1, a kind of LED viewbox, it is characterized in that: it comprises control circuit, light adjusting circuit, current-limiting circuit and light-emitting diode (LED) group row, wherein, control circuit is connected respectively to rectification circuit and light adjusting circuit, light adjusting circuit is connected to current-limiting circuit, and current-limiting circuit is connected to light-emitting diode (LED) group.
2, New LED viewbox according to claim 1, it is characterized in that: described control circuit is made up of control switch and control relay.
3, New LED viewbox according to claim 2 is characterized in that: control switch is an inductive switch.
4, New LED viewbox according to claim 3 is characterized in that: described inductive switch is an infrared sensing switch.
5, LED viewbox according to claim 3 is characterized in that: described inductive switch is an electromagnetic induction switch.
6, LED viewbox according to claim 2 is characterized in that: described control switch is a touch switch.
7, LED viewbox according to claim 6 is characterized in that: described touch switch is a pedal type switch.
8, according to claim 1 or 2 or 3 described LED viewboxs, it is characterized in that: described light adjusting circuit is the voltage type light adjusting circuit.
9, according to claim 1 or 2 or 3 described LED viewboxs, it is characterized in that: described light adjusting circuit is a Current Control formula light adjusting circuit.
10, according to claim 1 or 2 or 3 described LED viewboxs, it is characterized in that: described light-emitting diode (LED) group adopts high brightness LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200308653U CN2927592Y (en) | 2006-07-27 | 2006-07-27 | LED slide show |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200308653U CN2927592Y (en) | 2006-07-27 | 2006-07-27 | LED slide show |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927592Y true CN2927592Y (en) | 2007-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200308653U Expired - Fee Related CN2927592Y (en) | 2006-07-27 | 2006-07-27 | LED slide show |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927592Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722025A (en) * | 2012-06-28 | 2012-10-10 | 吴江市宏达探伤器材有限公司 | LED (Light Emitting Diode) cold/hot light source film viewer |
| CN105338680A (en) * | 2014-06-09 | 2016-02-17 | 东莞巨扬电器有限公司 | Light fixture with proximity sensor, and control method thereof |
-
2006
- 2006-07-27 CN CNU2006200308653U patent/CN2927592Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722025A (en) * | 2012-06-28 | 2012-10-10 | 吴江市宏达探伤器材有限公司 | LED (Light Emitting Diode) cold/hot light source film viewer |
| CN105338680A (en) * | 2014-06-09 | 2016-02-17 | 东莞巨扬电器有限公司 | Light fixture with proximity sensor, and control method thereof |
| CN105338680B (en) * | 2014-06-09 | 2018-06-15 | 东莞巨扬电器有限公司 | Lamps and lanterns and its control method with proximity induction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070725 Termination date: 20110727 |