CN104219818A - Circuit for preventing liquefaction inside glass cover and lamp - Google Patents
Circuit for preventing liquefaction inside glass cover and lamp Download PDFInfo
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- CN104219818A CN104219818A CN201310210088.5A CN201310210088A CN104219818A CN 104219818 A CN104219818 A CN 104219818A CN 201310210088 A CN201310210088 A CN 201310210088A CN 104219818 A CN104219818 A CN 104219818A
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- cloche
- connects
- control unit
- output
- detecting unit
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Abstract
The invention proposes a circuit for preventing liquefaction inside a glass cover. A lamp is provided with the glass cover. The circuit comprises a detection unit, a control unit, a switch and a hot air fan, wherein the detection unit is used for detecting the temperature of the glass cover, the control unit comprises a first input end, a second input end and an output end, the first input end of the control unit is connected with the a second output end of the detection unit, the second input end of the control unit is connected with an anode of a power supply, the output end of the control unit is connected with a cathode of the power supply, and the switch is controlled by the control unit and connected with the power supply. When the detection unit detects that the temperature of the glass cover is at a first set value, the control unit controls the switch to be switched on, the hot air fan works and blows out hot air for heating the glass cover; and when the detection unit detects that the temperature of the glass cover is at a second set value, the control unit controls the switch to be switched off, and the hot air fan stops working. The invention also proposes a lamp. With the adoption of the circuit, a liquefaction phenomenon inside the glass cover can be prevented, so that the lamp is protected.
Description
Technical field
The present invention relates to a kind of warning circuit, particularly relate to one and prevent liquefaction circuit and light fixture in cloche.
Background technology
At Cold Winter, family glass all can occur globule phenomenon, this is air liquefaction phenomenon.Present light fixture also there will be same present in the winter time, because lamp light source heats to inner air, outer glass cover is terribly cold, will occur globule phenomenon when hot-air runs into cold cloche in inside, if the globule drips on light source can cause light source explosion or damage.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming the existence of above-mentioned prior art, and propose one and prevent liquefaction circuit and light fixture in cloche, there is liquefaction phenomenon in the cloche that can solve the light fixture when being cold and the problem that causes light source to damage.
For solving the problems of the technologies described above, the present invention proposes one and prevents liquefaction circuit in cloche, light fixture is provided with cloche, it comprises: detecting unit, it is for detecting the temperature of a cloche, it comprises input, the first output and the second output, and the input of detecting unit connects the positive pole of a power supply, and the first output of detecting unit connects the negative pole of a power supply; Control unit, it comprises first input end, the second input and output, the first input end of control unit connects the second output of detecting unit, and the second input of control unit connects the positive pole of power supply, and the output of control unit connects the negative pole of power supply; Switch, it is controlled by control unit, and it comprises input and output, and the input of switch connects power supply; And air-heater, the output of one end connecting valve of air-heater, the other end of air-heater connects power supply; Wherein, when detecting unit detects the temperature of cloche in the first set point, then control unit control switch closes, air-heater works, blowout hot blast is cloche heating, when detecting unit detects the temperature of cloche in the second set point, then control unit control switch disconnects, and air-heater quits work.
Preferably, detecting unit comprises divider resistance and thermistor, one end of divider resistance connects the input of detecting unit, the other end of divider resistance connects the second output of detecting unit, one end of thermistor connects the second output of detecting unit, and the other end of thermistor connects the first output of detecting unit.
Preferably, thermistor is arranged on the surface of cloche.
Preferably, control unit comprises the hot-wire coil of triode and relay, the first input end of the base stage connection control unit of triode, second input of one end connection control unit of hot-wire coil, the collector electrode of the other end connecting triode of hot-wire coil, the output of the emitter connection control unit of triode.
Preferably, prevent liquefaction circuit in cloche from comprising transformer, rectifier bridge and electrochemical capacitor, transformer connects AC power, rectifier bridge connection transformer, and electrochemical capacitor connects rectifier bridge.
Preferably, the resistance of thermistor carries out adjustment setting according to the first set point and the second set point.
Preferably, according to cloche, the first set point occurs that temperature when liquefying is arranged, temperature when the second set point normally works according to light fixture is arranged.
The present invention also proposes a kind of light fixture, comprises and prevents liquefaction circuit in cloche as above.
Compared with prior art; of the present inventionly prevent liquefaction circuit and light fixture in cloche; by arranging detecting unit and air-heater; can when the cloche temperature of light fixture be lower than lamp light source temperature; heated by air-heater; prevent from occurring liquefaction phenomenon in cloche, thus protection light fixture is not damaged.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram preventing liquefaction circuit in cloche of the present invention.
Description of reference numerals is as follows: hot-wire coil K K switch-1 air-heater MOTOR lamp light source LAMP of transformer T1 rectifier bridge BD electrochemical capacitor E1 detecting unit 1 divider resistance R1 thermistor RT control unit 2 triode Q1 relay.
Embodiment
In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Refer to Fig. 1, of the present inventionly prevent liquefaction circuit in cloche, it comprises: transformer T1, rectifier bridge BD, electrochemical capacitor E1, detecting unit 1, control unit 2, K switch-1 and air-heater MOTOR.Light fixture is provided with cloche.Also rectifier is provided with between lamp light source LAMP and power supply.
Transformer T1 connects AC power, and rectifier bridge BD connection transformer T1, electrochemical capacitor E1 connect rectifier bridge BD.Detecting unit 1 is for detecting the temperature of a cloche.Detecting unit 1 comprises input, the first output and the second output, and the input of detecting unit 1 connects the positive pole of a power supply, and the first output of detecting unit 1 connects the negative pole of a power supply.Control unit 2 comprises first input end, the second input and output.The first input end of control unit 2 connects the second output of detecting unit 1, and the second input of control unit 2 connects the positive pole of power supply, and the output of control unit 2 connects the negative pole of power supply.K switch-1 is controlled by control unit 2.K switch-1 comprises input and output, and the input of K switch-1 connects power supply.The output of one end connecting valve K-1 of air-heater MOTOR, the other end of air-heater MOTOR connects power supply.
Wherein, when detecting unit 1 detects the temperature of cloche in the first set point, then control unit 2 control switch K-1 closes, air-heater MOTOR works, blowout hot blast is cloche heating, when detecting unit 1 detects the temperature of cloche in the second set point, then control unit 2 control switch K-1 disconnects, and air-heater MOTOR quits work.
AC power is through transformer T1 transformation, after rectifier bridge BD rectification and electrochemical capacitor E1 filtering, become DC power supply.
Detecting unit 1 comprises divider resistance R1 and thermistor RT.One end of divider resistance R1 connects the input of detecting unit 1, the other end of divider resistance R1 connects the second output of detecting unit 1, one end of thermistor RT connects the second output of detecting unit 1, and the other end of thermistor RT connects the first output of detecting unit 1.In the present embodiment, thermistor RT is arranged on the surface of cloche.In the present embodiment, the resistance of thermistor RT is carried out adjustment according to the first set point and the second set point and is arranged.According to cloche, first set point occurs that temperature when liquefying is arranged.Temperature when second set point normally works according to light fixture is arranged.Therefore, need in advance to measure when light fixture works, the temperature that the temperature of cloche appearance liquefaction and light fixture normally work, this makes it possible to cloche temperature and lamp temperatures are consistent, avoid occurring liquefaction phenomenon.
Control unit 2 comprises the hot-wire coil K of triode Q1 and relay.The first input end of the base stage connection control unit 2 of triode Q1, second input of one end connection control unit 2 of hot-wire coil, the collector electrode of the other end connecting triode Q1 of hot-wire coil, the emitter of triode Q1 connects the output that speed searches control unit 2.In other embodiments, triode Q1 also can replace with metal-oxide-semiconductor.
The present invention also proposes a kind of light fixture, comprises and prevents liquefaction circuit in cloche described above.
Operation principle of the present invention is described in detail below in conjunction with Fig. 1.
When connecting AC power, light fixture lights, and now lamp light source LAMP is also being inner air heating.Alternating current is by transformer T1 transformation simultaneously, and rectifier bridge BD rectification, electrochemical capacitor E1 filtering obtains relay working voltage.The base stage that voltage is triode Q1 by divider resistance R1, thermistor RT dividing potential drop is powered.Thermistor RT is when the first set point, that is the temperature of cloche lower relative to light fixture time, the resistance of thermistor RT is larger, make triode Q1 conducting, the hot-wire coil K of relay obtains electric, K switch-1 adhesive, air-heater MOTOR works, blowout hot blast is cloche heating, cloche temperature is raised, prevents hot inside air from cloche, producing liquefaction phenomenon.After the temperature of cloche rises to the second set point, that is when the temperature of cloche is consistent relative to light fixture, the resistance of thermistor RT diminishes, the both end voltage of thermistor RT diminishes, and triode Q1 disconnects, and makes relay electric-loss, K switch-1 disconnects, and air-heater MOTOR quits work.Circulation like this reaches and prevents the inner liquefaction phenomenon of fitting glass cover from producing.
Compared with prior art; of the present inventionly prevent liquefaction circuit and light fixture in cloche; by arranging detecting unit and air-heater; can when the cloche temperature of light fixture be lower than lamp light source temperature; heated by air-heater; occur liquefaction phenomenon in placing glass cover, thus protection light fixture is not damaged.
The foregoing is only better possible embodiments of the present invention, not limit the scope of the invention.All utilizations specification of the present invention and the change of the equivalent structure done by accompanying drawing content, be all included in protection scope of the present invention.
Claims (8)
1. prevent a liquefaction circuit in cloche, described light fixture is provided with cloche, it is characterized in that, it comprises:
Detecting unit, it is for detecting the temperature of a cloche, and it comprises input, the first output and the second output, and the input of described detecting unit connects the positive pole of a power supply, and the first output of described detecting unit connects the negative pole of a power supply;
Control unit, it comprises first input end, the second input and output, the first input end of described control unit connects the second output of described detecting unit, second input of described control unit connects the positive pole of described power supply, and the output of described control unit connects the negative pole of described power supply;
Switch, it is controlled by described control unit, and it comprises input and output, and the input of described switch connects described power supply; And
Air-heater, one end of described air-heater connects the output of described switch, and the other end of described air-heater connects described power supply;
Wherein, when detecting unit detects the temperature of described cloche in the first set point, then control unit control switch closes, described air-heater work, blowout hot blast is the heating of described cloche, when detecting unit detects the temperature of described cloche in the second set point, then control unit control switch disconnects, and described air-heater quits work.
2. prevent liquefaction circuit in cloche as claimed in claim 1, it is characterized in that, described detecting unit comprises divider resistance and thermistor, one end of described divider resistance connects the input of described detecting unit, the other end of described divider resistance connects the second output of described detecting unit, one end of described thermistor connects the second output of described detecting unit, and the other end of described thermistor connects the first output of described detecting unit.
3. prevent liquefaction circuit in cloche as claimed in claim 2, it is characterized in that, described thermistor is arranged on the surface of described cloche.
4. prevent liquefaction circuit in cloche as claimed in claim 1, it is characterized in that, described control unit comprises the hot-wire coil of triode and relay, the base stage of described triode connects the first input end of described control unit, one end of described hot-wire coil connects the second input of described control unit, the other end of described hot-wire coil connects the collector electrode of described triode, and the emitter of described triode connects the output of described control unit.
5. prevent liquefaction circuit in cloche as claimed in claim 1, it is characterized in that, the described cloche interior liquefaction circuit that prevents comprises transformer, rectifier bridge and electrochemical capacitor, described transformer connects AC power, described rectifier bridge connects described transformer, and described electrochemical capacitor connects described rectifier bridge.
6. prevent liquefaction circuit in cloche as claimed in claim 2, it is characterized in that, the resistance of described thermistor is carried out adjustment according to described first set point and the second set point and is arranged.
7. prevent liquefaction circuit in cloche as claimed in claim 1, it is characterized in that, according to described cloche, described first set point occurs that temperature when liquefying is arranged, temperature when the second set point normally works according to described light fixture is arranged.
8. a light fixture, is characterized in that, comprises preventing from liquefying in cloche circuit as described in claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210088.5A CN104219818B (en) | 2013-05-30 | 2013-05-30 | Prevent liquefaction circuit and light fixture in cloche |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210088.5A CN104219818B (en) | 2013-05-30 | 2013-05-30 | Prevent liquefaction circuit and light fixture in cloche |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104219818A true CN104219818A (en) | 2014-12-17 |
| CN104219818B CN104219818B (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310210088.5A Expired - Fee Related CN104219818B (en) | 2013-05-30 | 2013-05-30 | Prevent liquefaction circuit and light fixture in cloche |
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| CN (1) | CN104219818B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006210307A (en) * | 2005-01-28 | 2006-08-10 | Hiroki Inoguchi | Technology on luminescent face of liquid or liquefied matter with luminescent characteristics |
| CN201273474Y (en) * | 2008-09-19 | 2009-07-15 | 华能光电科技股份有限公司 | LED lamp |
| CN201795311U (en) * | 2010-01-20 | 2011-04-13 | (株)因特希特 | Heat light bulb protection device |
| US20130119866A1 (en) * | 2011-11-16 | 2013-05-16 | Toshiba Lighting & Technology Corporation | Luminaire and Lighting Method |
-
2013
- 2013-05-30 CN CN201310210088.5A patent/CN104219818B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006210307A (en) * | 2005-01-28 | 2006-08-10 | Hiroki Inoguchi | Technology on luminescent face of liquid or liquefied matter with luminescent characteristics |
| CN201273474Y (en) * | 2008-09-19 | 2009-07-15 | 华能光电科技股份有限公司 | LED lamp |
| CN201795311U (en) * | 2010-01-20 | 2011-04-13 | (株)因特希特 | Heat light bulb protection device |
| US20130119866A1 (en) * | 2011-11-16 | 2013-05-16 | Toshiba Lighting & Technology Corporation | Luminaire and Lighting Method |
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| Publication number | Publication date |
|---|---|
| CN104219818B (en) | 2016-05-04 |
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