CN214381815U - Light source driver - Google Patents
Light source driver Download PDFInfo
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- CN214381815U CN214381815U CN202120611044.3U CN202120611044U CN214381815U CN 214381815 U CN214381815 U CN 214381815U CN 202120611044 U CN202120611044 U CN 202120611044U CN 214381815 U CN214381815 U CN 214381815U
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Abstract
The application relates to a light source driver, which comprises a box body and a circuit board arranged in the box body; the box body comprises a side plate, and the side plate is provided with heat dissipation holes; the side plates are connected with partition plates which are parallel to the side plates, and the partition plates are in sliding fit with the side plates; the baffle is equipped with through-hole and shielding part, the through-hole is used for communicating the louvre, shielding part is used for hiding the louvre. When the temperature of the circuit board is higher, the partition plate is slid to enable the through hole to be communicated with the heat dissipation hole, air inside and outside the box body flows, and the temperature of the circuit board is reduced; when the temperature of the circuit board is lower, the baffle plate is slid to enable the shielding part to cover the heat dissipation hole, so that dust is reduced from entering the box body, and the service life of the driver is prolonged.
Description
Technical Field
The present application relates to the field of semiconductor lighting, and more particularly, to a light source driver.
Background
The light emitting diode, referred to as LED for short, is a commonly used light emitting device that can efficiently convert electrical energy into light energy, and is widely used because it has an outstanding energy saving effect.
In daily use, a proper driver needs to be configured for the LED, and the driver is used for converting 220V alternating current into low-voltage direct current so as to supply power for the LED. Generally, a driver includes a cartridge body and a circuit board;
the driver working process is accompanied by thermal production, and the during operation, along with thermal accumulation, the temperature of circuit board risees gradually, for avoiding the circuit board high temperature, then the box body sets up the louvre to make the inside and outside air flow of box body, reduce the temperature of circuit board.
In view of the above-mentioned related art, the inventor believes that dust easily enters the case from the heat dissipation holes and adheres to the circuit board, which affects the service life of the circuit board.
SUMMERY OF THE UTILITY MODEL
In order to improve the service life of the driver, the application provides a light source driver.
The application provides a light source driver adopts following technical scheme:
a light source driver comprises a box body and a circuit board arranged in the box body; the box body comprises a side plate, and the side plate is provided with heat dissipation holes; the side plates are connected with partition plates which are parallel to the side plates, and the partition plates are in sliding fit with the side plates;
the baffle is equipped with through-hole and shielding part, the through-hole is used for communicating the louvre, shielding part is used for hiding the louvre.
By adopting the technical scheme, when the temperature of the circuit board is higher, the partition plate is slid to enable the through hole to be communicated with the heat dissipation hole, air inside and outside the box body flows, and the temperature of the circuit board is reduced; when the temperature of the circuit board is lower, the baffle plate is slid to enable the shielding part to cover the heat dissipation hole, so that dust is reduced from entering the box body, and the service life of the driver is prolonged.
Optionally, the device further comprises a rack, a gear and a motor; the rack is fixedly connected with the partition plate; the gear is rotationally connected with the box body and is meshed with the rack; the motor is connected with the box body, and an output shaft of the motor drives the gear to rotate.
Through adopting above-mentioned technical scheme, motor forward or reverse rotation to the drive baffle slides, realizes that through-hole intercommunication louvre or shielding part cover the louvre.
Optionally, the device further comprises a temperature measuring module and a control module;
the temperature measuring module is connected with the box body and used for detecting the temperature of the circuit board; when the temperature of the circuit board is lower than or equal to a preset value, the temperature measuring module outputs a low-temperature signal; when the temperature of the circuit board is higher than a preset value, the temperature measuring module outputs a high-temperature signal;
the control module is coupled with the temperature measuring module to receive the low-temperature signal or the high-temperature signal; the control module responds to the low-temperature signal to output a forward rotation signal to the motor; the control module responds to the high-temperature signal to output a reverse signal to the motor;
responding to a forward rotation signal, the motor rotates forward and drives the partition plate to slide, so that the shielding part is used for covering the heat dissipation holes;
responding to the reversal signal, the motor rotates reversely and drives the partition plate to slide, so that the through hole is communicated with the heat dissipation hole.
By adopting the technical scheme, the partition plate is automatically controlled to slide according to the temperature of the circuit board, and the through hole is communicated with the heat dissipation hole when the temperature of the circuit board is higher; when the temperature of the circuit board is lower, the shielding part covers the heat dissipation hole.
Optionally, the temperature measuring module includes a temperature sensitive resistor, a fixed resistor and a first switching triode;
one end of the temperature-sensitive resistor is connected with the anode of the power supply, and the other end of the temperature-sensitive resistor is grounded after being connected with the fixed resistor in series;
the collector of the first switching triode is connected with the positive electrode of the power supply, the base of the first switching triode is connected with the connection point of the temperature-sensitive resistor and the fixed resistor, and the emitter of the first switching triode is connected with the control module.
By adopting the technical scheme, the high-temperature signal or the low-temperature signal is output to the control module according to the temperature of the circuit board.
Optionally, the heat dissipation device further comprises a detection module, wherein the detection module is used for detecting whether the through hole is communicated with the heat dissipation hole; when the through hole is communicated with the heat dissipation hole, the detection module outputs a communication signal; when the through hole is not communicated with the heat dissipation hole, the detection module outputs a shielding signal;
the control module is coupled with the temperature measuring module to receive the communication signal or the shielding signal;
the control module responds to the low-temperature signal and the communication signal and outputs a forward rotation signal to the motor;
the control module responds to the high-temperature signal and the shielding signal and outputs a reverse signal to the motor.
By adopting the technical scheme, when the temperature of the circuit board is lower, if the shielding part shields the heat dissipation hole, the motor does not act; when the temperature of the circuit board is higher, if the through hole is communicated with the heat dissipation hole, the motor does not act.
Optionally, the detection module includes an infrared emitter and an infrared receiver;
the infrared emitter is connected to one side of the side plate, which is far away from the partition plate, and infrared rays emitted by the infrared emitter are emitted into the radiating hole;
the infrared receiver is connected to one side of the partition board, which is far away from the side board, and is used for receiving infrared rays emitted by the infrared emitter; and the infrared receiver is connected with the control module.
Through adopting above-mentioned technical scheme, realize whether being sheltered from and output intercommunication signal or shelter from the signal according to the louvre.
Optionally, when the temperature of the circuit board is lower than or equal to a preset value, the temperature measurement module outputs a low level as a low-temperature signal; when the temperature of the circuit board is higher than a preset value, the temperature measuring module outputs a high level as a high-temperature signal; when the through hole is communicated with the heat dissipation hole, the detection module outputs a high level as a communication signal; when the through hole is not communicated with the heat dissipation hole, the detection module outputs a low level as a shielding signal;
the control module comprises an exclusive-OR gate, a second switch triode, a relay, an AND gate and a processor;
two input ends of the exclusive-OR gate are respectively connected with the temperature measuring module and the detection module;
the base electrode of the second switching triode is connected with the output end of the exclusive-OR gate;
two input ends of the AND gate are respectively connected with the detection module and an emitting electrode of the second switching triode;
one end of a coil of the relay is connected with a collector of the second switching triode, and the other end of the coil is connected with the positive electrode of the power supply; one end of a normally open switch of the relay is connected with the output end of the AND gate, and the other end of the normally open switch is connected with the processor;
the processor is connected with the motor.
By adopting the technical scheme, the control module responds to the low-temperature signal and the communication signal and outputs the forward rotation signal to the motor; the control module responds to the high-temperature signal and the shielding signal and outputs a reverse signal to the motor.
Optionally, the side plate is provided with a sliding groove, and the heat dissipation holes are communicated with the sliding groove; the partition plate is embedded in the sliding groove in a sliding manner.
Through adopting above-mentioned technical scheme, utilize the slip of spout direction baffle to guarantee through-hole intercommunication louvre or shelter from not sheltering from the louvre.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the temperature of the circuit board is higher, the partition plate is slid to enable the through hole to be communicated with the heat dissipation hole, air inside and outside the box body flows, and the temperature of the circuit board is reduced; when the temperature of the circuit board is lower, the baffle plate is slid to enable the shielding part to cover the heat dissipation hole, so that dust is reduced from entering the box body, and the service life of the driver is prolonged;
2. when the temperature of the circuit board is lower, if the shielding part shields the heat dissipation hole, the motor does not act; when the temperature of the circuit board is higher, if the through hole is communicated with the heat dissipation hole, the motor does not act.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a light source driver.
Fig. 2 is a schematic view of the overall structure of the light source driver, which is mainly used for showing the heat dissipation holes.
Fig. 3 is a schematic structural view of the side plate and the adjusting device.
Fig. 4 is a schematic diagram of the adjustment device.
Fig. 5 is a circuit diagram of the adjusting device.
Description of reference numerals: 1. a box body; 11. a base plate; 12. a top plate; 13. a side plate; 131. heat dissipation holes; 132. a chute; 14. a box cover; 15. a chamber; 2. an adjustment device; 21. a partition plate; 211. a through hole; 212. a shielding portion; 22. a rack; 23. a gear; 24. a motor; 25. a temperature measuring module; 26. a detection module; 261. an infrared emitter; 262. an infrared receiver; 27. and a control module.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Referring to fig. 1, an embodiment of the present application discloses a light source driver, which includes a case 1 and a circuit board. The box body 1 comprises a bottom plate 11, a top plate 12 and side plates 13; the bottom plate 11 and the top plate 12 are both horizontally arranged, and the bottom plate 11 is positioned right below the top plate 12; the side plates 13 are vertically arranged, three side plates 13 are distributed along the circumferential direction of the bottom plate 11, and two adjacent side plates 13 are perpendicular to each other; meanwhile, the lower ends of the side plates 13 are connected with the bottom plate 11; the upper ends of the side plates 13 are connected to the top plate 12.
The bottom plate 11, the top plate 12 and the side plates 13 enclose a chamber 15 in which a circuit board (not shown) is mounted. The box body 1 further comprises a box cover 14, and the box cover 14 is used for covering the opening of the chamber 15 so as to prevent impurities such as dust from entering the chamber 15.
Referring to fig. 1 and 2, one or more side plates 13 are provided with heat dissipation holes 131 at intervals, so that during operation, air inside and outside the case 1 flows through the heat dissipation holes 131 to provide a heat dissipation function for the circuit board. In this embodiment, one side plate 13 is provided with heat dissipation holes 131.
Referring to fig. 2 and 3, the box body 1 is further provided with an adjusting device 2, and the adjusting device 2 is used for covering the heat dissipation hole 131 to reduce dust entering the box body 1 when the temperature of the circuit board is low. The adjusting device 2 comprises a partition 21, a rack 22, a gear 23 and a motor 24.
The side plate 13 with the heat dissipation holes 131 is further provided with a sliding slot 132, the thickness direction of the side plate 13 is the depth direction of the sliding slot 132, and the notch of the sliding slot 132 faces the cavity 15; meanwhile, the slide groove 132 penetrates the side plate 13 in the horizontal direction.
The partition plate 21 is embedded in the sliding groove 132 in a sliding manner, and the end surface of the partition plate 21 departing from the cavity 15 is in sliding fit with the groove bottom of the sliding groove 132; in the embodiment, the sliding groove 132 is provided with a dovetail groove to prevent the partition 21 from separating from the side plate 13.
The partition plate 21 is provided with through holes 211 at intervals, and a shielding part 212 is formed between adjacent through holes 211; the through hole 211 is used for communicating the heat dissipation hole 131, and the shielding portion 212 is used for shielding the heat dissipation hole 131.
The rack 22 is horizontally arranged and connected to one side of the partition 21 facing the chamber 15; the axis of the gear 23 is vertical and is meshed with the rack 22; the motor 24 can adopt a servo motor 24, the shell of the motor 24 is connected with the box body 1, and the output shaft of the motor 24 is coaxially connected with the gear 23.
Referring to fig. 4, the adjusting device 2 further comprises a temperature measuring module 25, a detection module 26 and a control module 27. The temperature measuring module 25 is used for detecting the temperature of the circuit board; the detection module 26 is configured to detect whether the heat dissipation hole 131 is blocked; the control module 27 is coupled to the temperature measuring module 25 and the detecting module 26. The control module 27 is used for controlling the motor 24 to rotate and drive the partition plate 21 to slide when the temperature of the circuit board is high and the heat dissipation hole 131 is blocked, so that the through hole 211 is communicated with the heat dissipation hole 131, air flows inside and outside the box body 1 conveniently, and heat dissipation is provided for the circuit board; the control module 27 is used for controlling the motor 24 to rotate and drive the partition plate 21 to slide when the temperature of the circuit board is low and the heat dissipation hole 131 is not shielded, so that the shielding portion 212 shields the heat dissipation hole 131, and dust is prevented from entering the box body 1.
Referring to fig. 5, the temperature measuring module 25 includes a temperature sensitive resistor RT, a fixed resistor R1, and a first switching transistor Q1.
One end of the temperature-sensitive resistor RT is connected with the anode of the power supply, and the other end of the temperature-sensitive resistor RT is grounded after being connected with the fixed resistor R1 in series; the resistance value of the temperature-sensitive resistor RT is reduced along with the rise of the temperature; the first switching triode Q1 is an NPN type triode, the collector of which is connected with the positive electrode of the power supply, and the base of which is connected with the connection point of the temperature-sensitive resistor RT and the fixed resistor R1.
Referring to fig. 2 and 3, the detection module 26 includes an infrared emitter 261 and an infrared receiver 262.
The infrared emitter 261 is connected to a side of the side plate 13 away from the partition 21, and infrared rays emitted by the infrared emitter 261 are emitted into the heat dissipation hole 131; the infrared receiver 262 is connected to the side of the partition 21 away from the side plate 13 and is used for receiving the infrared rays emitted by the infrared emitter 261; and the infrared receiver 262 outputs a high level when receiving the infrared ray emitted from the infrared emitter 261.
Referring to fig. 5, the control module 27 includes an xor gate N1, a second switching transistor Q2, a relay KM1, an and gate N2, and a processor.
Two input ends of the exclusive-or gate N1 are respectively connected to an emitter of the first switching triode Q1 and the infrared receiver 262; the base electrode of the second switching triode Q2 is connected with the output end of the exclusive-OR gate N1; two input ends of the and gate N2 are respectively connected with the infrared receiver 262 and the emitter of the second switching triode Q2; one end of a coil of the relay KM1 is connected with a collector of a second switching triode Q2, and the other end of the coil is connected with the positive electrode of a power supply; one end of a normally open switch KM1-1 of the relay KM1 is connected with the output end of the AND gate N2, and the other end of the normally open switch KM1-1 is connected with the processor; the processor is connected to the motor 24.
The implementation principle of the light source driver in the embodiment of the application is as follows: when the temperature of the circuit board is high and the heat dissipation holes 131 are shielded, the motor 24 rotates reversely, the partition plate 21 slides to enable the through holes 211 to be communicated with the heat dissipation holes 131, air inside and outside the box body 1 flows, and the temperature of the circuit board is reduced;
when the temperature of the circuit board is low and the heat dissipation holes 131 are not shielded, the motor 24 rotates in the forward direction, and the partition plate 21 slides to enable the shielding part 212 to cover the heat dissipation holes 131, so that dust is prevented from entering the box body 1, and the service life of the driver is prolonged;
when the temperature of the circuit board is high and the heat dissipation hole 131 is not shielded, or when the temperature of the circuit board is low and the heat dissipation hole 131 is shielded, the motor 24 stops operating.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A light source driver comprises a box body (1) and a circuit board arranged in the box body (1); the method is characterized in that: the box body (1) comprises a side plate (13), and the side plate (13) is provided with a heat dissipation hole (131); the side plate (13) is connected with a partition plate (21), the partition plate (21) is parallel to the side plate (13), and the partition plate (21) is attached to the side plate (13) in a sliding manner;
the partition plate (21) is provided with a through hole (211) and a blocking portion (212), the through hole (211) is used for being communicated with the heat dissipation hole (131), and the blocking portion (212) is used for covering the heat dissipation hole (131).
2. A light source driver according to claim 1, wherein: the device also comprises a rack (22), a gear (23) and a motor (24); the rack (22) is fixedly connected with the clapboard (21); the gear (23) is rotatably connected with the box body (1), and the gear (23) is meshed with the rack (22); the motor (24) is connected with the box body (1), and an output shaft of the motor (24) drives the gear (23) to rotate.
3. A light source driver according to claim 2, wherein: the temperature measurement device also comprises a temperature measurement module (25) and a control module (27);
the temperature measuring module (25) is connected with the box body (1) and is used for detecting the temperature of the circuit board; when the temperature of the circuit board is lower than or equal to a preset value, the temperature measuring module (25) outputs a low-temperature signal; when the temperature of the circuit board is higher than a preset value, the temperature measuring module (25) outputs a high-temperature signal;
the control module (27) is coupled with the temperature measuring module (25) to receive the low-temperature signal or the high-temperature signal; the control module (27) is responsive to a low temperature signal to output a forward rotation signal to the motor (24); the control module (27) is responsive to the high temperature signal to output a reverse rotation signal to the motor (24);
in response to a forward rotation signal, the motor (24) rotates forward and drives the partition plate (21) to slide, so that the shielding part (212) is used for covering the heat dissipation hole (131);
in response to the reverse rotation signal, the motor (24) rotates reversely and drives the partition plate (21) to slide, so that the through hole (211) is communicated with the heat dissipation hole (131).
4. A light source driver according to claim 3, wherein: the temperature measuring module (25) comprises a temperature-sensitive resistor, a fixed resistor and a first switching triode;
one end of the temperature-sensitive resistor is connected with the anode of the power supply, and the other end of the temperature-sensitive resistor is grounded after being connected with the fixed resistor in series;
the collector of the first switching triode is connected with the positive electrode of the power supply, the base of the first switching triode is connected with the connection point of the temperature-sensitive resistor and the fixed resistor, and the emitter of the first switching triode is connected with the control module (27).
5. A light source driver according to claim 3, wherein: the heat dissipation hole is characterized by further comprising a detection module (26), wherein the detection module (26) is used for detecting whether the through hole (211) is communicated with the heat dissipation hole (131); when the through hole (211) is communicated with the heat dissipation hole (131), the detection module (26) outputs a communication signal; when the through hole (211) is not communicated with the heat dissipation hole (131), the detection module (26) outputs a shielding signal;
the control module (27) is coupled with the temperature measuring module (25) to receive a communication signal or a shielding signal;
the control module (27) responds to the low-temperature signal and the communication signal and outputs a forward rotation signal to the motor (24);
the control module (27) outputs a reverse signal to the motor (24) in response to the high temperature signal and the blocking signal.
6. A light source driver according to claim 5, wherein: the detection module (26) comprises an infrared emitter (261) and an infrared receiver (262);
the infrared emitter (261) is connected to one side of the side plate (13) departing from the partition plate (21), and infrared rays emitted by the infrared emitter (261) are emitted into the heat dissipation hole (131);
the infrared receiver (262) is connected to one side of the partition plate (21) away from the side plate (13) and used for receiving infrared rays emitted by the infrared emitter (261); and the infrared receiver (262) is connected with the control module (27).
7. A light source driver according to claim 5, wherein: when the temperature of the circuit board is lower than or equal to a preset value, the temperature measuring module (25) outputs a low-level signal; when the temperature of the circuit board is higher than a preset value, the temperature measuring module (25) outputs a high level as a high-temperature signal; when the through hole (211) is communicated with the heat dissipation hole (131), the detection module (26) outputs a high level as a communication signal; when the through hole (211) is not communicated with the heat dissipation hole (131), the detection module (26) outputs a low level as a shielding signal;
the control module (27) comprises an exclusive-OR gate, a second switching triode, a relay, an AND gate and a processor;
two input ends of the exclusive-OR gate are respectively connected with a temperature measuring module (25) and a detection module (26);
the base electrode of the second switching triode is connected with the output end of the exclusive-OR gate;
two input ends of the AND gate are respectively connected with the detection module (26) and an emitting electrode of the second switching triode;
one end of a coil of the relay is connected with a collector of the second switching triode, and the other end of the coil is connected with the positive electrode of the power supply; one end of a normally open switch of the relay is connected with the output end of the AND gate, and the other end of the normally open switch is connected with the processor;
the processor is connected with the motor (24).
8. A light source driver according to claim 1, wherein: the side plate (13) is provided with a sliding groove (132), and the heat dissipation holes (131) are communicated with the sliding groove (132); the partition plate (21) is embedded in the sliding groove (132) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611044.3U CN214381815U (en) | 2021-03-25 | 2021-03-25 | Light source driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611044.3U CN214381815U (en) | 2021-03-25 | 2021-03-25 | Light source driver |
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| Publication Number | Publication Date |
|---|---|
| CN214381815U true CN214381815U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120611044.3U Active CN214381815U (en) | 2021-03-25 | 2021-03-25 | Light source driver |
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| CN (1) | CN214381815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115397219A (en) * | 2022-09-20 | 2022-11-25 | 江苏电子信息职业学院 | Self-adaptive adjusting system based on big data processing |
-
2021
- 2021-03-25 CN CN202120611044.3U patent/CN214381815U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115397219A (en) * | 2022-09-20 | 2022-11-25 | 江苏电子信息职业学院 | Self-adaptive adjusting system based on big data processing |
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