WO2023237036A1 - 一种led照明装置及其保护装置 - Google Patents

一种led照明装置及其保护装置 Download PDF

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Publication number
WO2023237036A1
WO2023237036A1 PCT/CN2023/099053 CN2023099053W WO2023237036A1 WO 2023237036 A1 WO2023237036 A1 WO 2023237036A1 CN 2023099053 W CN2023099053 W CN 2023099053W WO 2023237036 A1 WO2023237036 A1 WO 2023237036A1
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WIPO (PCT)
Prior art keywords
led lighting
fuse
external signal
heater
lighting device
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Application number
PCT/CN2023/099053
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English (en)
French (fr)
Inventor
周林
蒋靖源
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嘉兴山蒲照明电器有限公司
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Application filed by 嘉兴山蒲照明电器有限公司 filed Critical 嘉兴山蒲照明电器有限公司
Publication of WO2023237036A1 publication Critical patent/WO2023237036A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits

Definitions

  • the present application relates to the field of lighting technology, and in particular to an LED lighting device and a protection device thereof.
  • LED lamp beads are widely used in high-power lighting devices to replace high-energy-consuming light sources, such as HID light sources.
  • High-power LED lighting devices have high light source brightness and require high power, but they are not compatible with magnetic ballasts. If a high-power LED lighting device is mistakenly connected to an inductive ballast, the light source's driving circuit may be damaged due to excessive current provided by the inductive ballast, resulting in a reduced service life.
  • high-power LED lighting devices on the market are basically not equipped with anti-misconnection circuits. Only a small number of devices add small board detection logic to cause the LED to flash to indicate a misconnection when a misconnection occurs. However, the control of this method is complex and costly, which limits its application scope.
  • this application proposes an LED lighting device and a protection device thereof.
  • the protection device realizes the function of preventing misconnection at low cost, so as to solve the problems mentioned in the above-mentioned background technology.
  • a detection device applied to an LED lighting device wherein the LED lighting device includes an LED driver and an LED light-emitting unit, and is characterized in that the detection device includes: a circuit board, The circuit board has a first end, a second end, a third end and a fourth end, wherein the third end and the fourth end are used to connect the ballast or mains; the first end and the second end Used to connect the LED driver, the LED driver is electrically connected to the LED light-emitting unit; a detection unit is configured on the circuit board, wherein the detection unit includes a valve, one end of which is electrically connected to the first end; a heater, one end of which is electrically connected to the other end of the valve, and the other end of which is electrically connected to the second end; and a fuse, which is electrically connected to the heater and the third end and At one of the fourth ends, the fuse is in a position that can receive the heat emitted by the heater.
  • the valve is a discharge tube.
  • the heater is a cement resistor.
  • the fuse is a thermal fuse.
  • the valve when the detection device is connected to an inductive ballast, the valve is short-circuited and the heater generates heat for a preset time to fuse the thermal fuse.
  • the thermal fuse is configured in a chip type.
  • the thermal fuse is of tubular type and is pluggably disposed on a base, and the base is disposed on the circuit board.
  • the base has a first pin and a second pin, the first pin is electrically connected to the heater, and the second pin is electrically connected to the third end or The fourth end.
  • the embodiment of the present application also proposes an LED lighting device, which is characterized in that it includes: a protection device having an input end and an output end, the input end is electrically connected to an external signal source, and the protection device includes a heater and a fuse The fuse is located at a position that can receive the heat emitted by the heater.
  • the protection device When the external signal provided by the external signal source reaches the protection standard of the protection device, the heater generates heat to assist the fuse to blow; the drive unit , the output end of the protection device is coupled to the drive unit, the drive unit is used to convert the external signal into a drive signal; and an LED light-emitting unit, which is coupled to the drive unit, the LED emits light The unit receives the driving signal output by the driving unit.
  • one end of the fuse is coupled to the external signal source, and the other end is coupled to the driving unit.
  • the protection device further includes: a valve, the valve is connected in series with the heater, and both ends are coupled to the external signal source and the drive unit;
  • the valve is configured as a discharge tube.
  • the heater is configured as a cement resistor.
  • the fuse is configured as a thermal fuse.
  • the direct supply is commercial power transmitted to the driving unit without adjustment by any power conversion equipment.
  • the protection standard is that the external signal is provided via an inductive ballast.
  • the discharge tube is disconnected and the external signal enters the driving unit.
  • the discharge tube is conductive/short-circuited, and the external signal does not enter the driving unit.
  • the device provided by the embodiment of the present application has the following advantages:
  • Figure 1 is a circuit block diagram of an LED lighting device according to an embodiment of the present application.
  • Figure 2 is a functional topology diagram of an external signal source according to an embodiment of the present application.
  • Figure 3 is a circuit block diagram of a power drive circuit according to an embodiment of the present application.
  • Figure 4 is a functional topology diagram of a protection device according to an embodiment of the present application.
  • Figure 5 is a circuit block diagram of a power drive circuit according to an embodiment of the present application.
  • FIG. 6 is a functional topology diagram of an LED lighting device according to an embodiment of the present application.
  • the “component having some electrical function” there is no particular limitation on the “component having some electrical function” as long as it can transmit and receive electrical signals between the connected components.
  • “Elements with certain electrical effects” may be, for example, electrodes or wirings, switching elements such as transistors, or other functional elements such as resistors, inductors, or capacitors.
  • “Up”, “down”, “left”, “right”, etc. are only used to express relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
  • orientation or positional relationship indicated by the terms “upper”, “lower”, “inner”, “middle”, etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to having a specific orientation, or to be constructed and operated in a specific orientation.
  • the present application provides an LED lighting device and a protection device thereof.
  • the LED lighting device is configured with a power drive circuit and an LED light-emitting unit.
  • the LED light-emitting unit is coupled to the power drive circuit to receive a drive signal output by the power drive circuit.
  • the power drive circuit is provided with a protection device.
  • the protection device is coupled to an external signal source and controls the on or off of the LED lighting device by judging the external signal provided by the external signal source.
  • the LED lighting device can be a HID lamp (HID-LED, High intensity Discharge-LED).
  • the LED lamp disclosed in the authorization announcement number is CN 211010828 U. Its power ranges from 150W to 300W, and its luminous flux can reach 20,000 lumens to 45,000. Lumen or so.
  • FIG. 1 is a circuit block diagram of an LED lighting device according to an embodiment of the present application.
  • the external signal source 10 is coupled to the power driving circuit 20 for providing the electrical signal Vin.
  • the power driving circuit 20 has a first input terminal and a first output terminal, wherein the first input terminal is used to couple to the external signal source 10 , and the first output terminal is coupled to the LED lighting unit 30 .
  • the power driving circuit 20 provides the driving signal Vo to the LED lighting unit 30 through the first output terminal.
  • the power driving circuit 20 and the LED lighting unit 30 may be connected through wires.
  • the external signal source 10 usually outputs the electrical signal Vin in two ways.
  • the first way is to provide the electrical signal Vin directly from the mains. That is to say, the mains power is transmitted to the power drive circuit 20 without any adjustment by the power conversion equipment.
  • the mains power refers to the voltage in the range of 90V to 320V.
  • Figure 2 shows that the external signal source 10 is the mains power passing through the inductor.
  • the current converter is adjusted to provide an electrical signal Vin.
  • the 120V mains power can output a voltage of 550V after passing through the inductive ballast.
  • the power drive circuit 20 includes a protection device 21 and a drive unit 22 .
  • the protection device 21 has an input terminal and an output terminal. The input terminal is coupled to the external signal source 10 for receiving the output signal from the external signal source 10 .
  • the output terminal of the electrical signal Vin is coupled to the driving unit 22 .
  • the external signal source 10 coupled to the input end of the protection device 21 is in mode 1, the protection device 21 works in a normal state, and its output end transmits an electrical signal to the driving unit 22, that is, the driving unit 22 works, and the driving unit 22 operates.
  • the unit 22 outputs the driving signal Vo to the LED lighting unit 30; when the external signal source 10 coupled to the input end of the protection device 21 is in the second mode, the protection device 21 works in an abnormal state, and no electrical signal is transmitted to the output end of the protection device 21.
  • the drive unit 22, that is, the drive unit 22 does not work.
  • FIG. 4 is a functional topology diagram of a protection device according to an embodiment of the present application.
  • the protection device 21 includes: a valve G, a heater R and a fuse F.
  • the valve G and the heater R are electrically connected in series and both ends are coupled to the external signal source 10 and the drive unit 22.
  • the fuse One end of F is electrically connected to the external signal source 10 , and the other end is coupled to one end of the valve G and the heater R that are electrically connected in series. It can also be said that this end is electrically connected to the driving unit 22 .
  • the valve has two modes: on and off, and there is a threshold.
  • the external signal source coupled to the input end of the protection device is mode 1
  • the external signal provided by the external signal source cannot reach the valve threshold.
  • the valve is in the disconnection mode, and almost no current flows through the valve, that is, the protection device is in the normal state;
  • the external signal source coupled to the input end of the protection device is mode 2
  • the external signal provided by the external signal source can reach the valve threshold at least for a moment, causing the valve to switch to the conduction mode.
  • a large current flows through the valve, that is, The protection device is in an abnormal state and almost no current flows to the drive unit.
  • Heaters usually have the characteristics of large size, moisture-proof, heat-resistant, anti-vibration, and fast heat dissipation. They can be used in situations with large current. In this embodiment, because of its large resistance and good heat dissipation performance, When the valve enters the conductive state, the heater can quickly respond to the large current flowing through itself and dissipate heat.
  • the fuse in this embodiment is a pair of temperature-sensitive devices that respond to the heat generated by itself and the heat received from the outside. When the total heat value reaches the specified value of the fuse, the heat will cause the melt of the fuse to melt, then Open the circuit where the fuse is located. That is, when the valve works in the conductive state, a large current flows through the heater and fuse, and the fuse opens in response to the heat generated by itself and the heat received from the heater, thereby protecting the circuit.
  • the valve G can be a discharge tube G
  • the heater R can be a cement resistor R
  • the discharge tube G is connected in series to one end of the cement resistor R.
  • One end of the fuse F is electrically connected to the other end of the cement resistor R (that is, the end not connected to the discharge tube G), and the other end of the fuse F is coupled to the external signal source 10 .
  • the protection device 21 is used to cut off the external signal source 10 when the external signal source 10 coupled to the first input end of the power drive circuit 20 is in the second mode (that is, the power drive circuit 20 is mistakenly connected to the inductive ballast). 10 signal transmission with the drive unit 22.
  • the protection device 21 disconnects the electrical connection between the driving unit 22 and the external signal source 10 by blowing the fuse F.
  • the fuse F uses a thermal fuse, which is located at a position that can receive the heat generated by the cement resistor R, so as to fully receive the heat generated by the cement resistor R.
  • the protection device can also be a detection device.
  • the detection device has: a circuit board.
  • the circuit board is a hardware structure and has a first end, a second end, a third end and a fourth end.
  • the third end and the fourth end are used to connect the ballast or the mains; the first end and the second end are used to connect the LED driver (for example, the LED driver is connected through a wire), and the LED driver is electrically connected to the LED light-emitting unit.
  • the first terminal and the second terminal are the output terminals of the protection device 21
  • the third terminal and the fourth terminal are the input terminals of the protection device 21
  • the LED driver is the drive unit 22 .
  • a detection unit is provided on the circuit board.
  • the detection unit includes: a discharge tube G, a cement resistor R, and a fuse F.
  • the discharge tube G and the cement resistor R are electrically connected in series, and then the two side sections are electrically connected to the first end and the second end respectively.
  • the fuse F is electrically connected to the cement resistor R and the third or fourth end. It is used to blow the fuse F and disconnect the electrical connection with the inductive ballast when it is mistakenly connected to the inductive ballast.
  • the fuse F uses a thermal fuse, which is close to the cement resistor R to fully receive the heat of the cement resistor R.
  • the thermal fuse is configured as a patch type.
  • the thermal fuse is configured to be pluggably mounted on the circuit board.
  • the detection device also includes a base, which is installed on the circuit board.
  • the base has a first pin that is electrically connected to the cement resistor R, a second pin that is electrically connected to the third end or the fourth end, and a thermal fuse. It is pluggable and configured on the base, and the thermal fuse is close to the cement resistor R.
  • the mechanism of this embodiment If the external signal coupled to the input terminal of the protection device is in the second mode, that is, the input terminal of the protection device is mistakenly connected to the inductive ballast, the electrical signal Vin output by the inductive ballast to the protection device is higher than The threshold value of the valve in the protection device. At this time, the valve is short-circuited/conducted, causing the heater connected in series to increase the power consumption and release heat.
  • the fuse is located in a position that can receive the heat emitted by the heater, and the heater can pass the heat emitted. to help the fuse melt cut off, which blocks the electrical signal Vin from flowing to the drive unit faster, thus protecting the circuit.
  • the discharge tube is a high-voltage protection component. If the voltage at both ends is higher than its protection specification value, a short circuit will occur internally and the input excessive voltage will be absorbed. It can also be said that the discharge tube is an overvoltage protection device, which is made based on the thyristor principle. It relies on the breakdown principle of the PN junction to conduct and discharge, and can flow a large surge current or pulse current.
  • the discharge tube has an off-state voltage (that is, a threshold). In this embodiment, the off-state voltage is 400V.
  • the device When the applied voltage is lower than the off-state voltage of the discharge tube, the device is in an off state, that is, when the protection device input When the external signal source 10 coupled to the terminal is in mode 1, the protection device is in a normal state at this time; when the external voltage exceeds its off-state voltage (or the external voltage continues to increase), the input terminal of the protection device is coupled
  • the external signal source 10 is in mode two, the protection device is in an abnormal state at this time, and the discharge tube enters the conduction state due to the load effect, and is almost short-circuited at this time; when the external voltage returns to normal, that is, it returns to mode one.
  • the discharge tube In power supply mode, the discharge tube automatically resets and returns to the high impedance state.
  • the 120V mains power can output a voltage of 550V after passing through the inductive ballast.
  • This voltage enters the protection device 21 as an electrical signal Vin.
  • the electrical signal Vin is higher than the off-state voltage of the discharge tube, and the discharge
  • the tube enters the short circuit/conducting state, and a large current flows through the cement resistor in series with the discharge tube.
  • the cement resistor releases heat.
  • the temperature-sensitive fuse receives a certain amount of heat emitted by the cement resistor and then disconnects.
  • the fuse is optional. Thermal fuse.
  • the 120VAC input voltage of the inductive ballast is pulled up to 550V.
  • the resistor dissipates heat to blow the thermal fuse.
  • the thermal fuse blowing time can be controlled by matching the resistance value of the cement resistor to achieve the required protection time such as 1s, 3s, 5s, etc.
  • the protection time is the tolerance of the thermal fuse. After receiving the heat emitted by the cement resistor and the heat generated by itself, it fuses after 1s, 3s, 5s, etc.
  • the cloth parts around the cement resistor are all components that are not sensitive to temperature or have little effect on temperature, they can be controlled.
  • the protection time is 5s; when the surrounding fabrics are important components such as the system main control chip (IC) and whose temperature has a greater impact, the protection time should be controlled to 1s, that is, the connection between the detection device and external signals should be cut off as soon as possible.
  • the blowing time of the thermal fuse can be controlled by adjusting the distance between the cement resistor and the thermal fuse to achieve the required protection time.
  • the detection device is integrated on the LED driver, and the thermal fuse is pluggably installed on the LED driver.
  • the cement resistor should be kept away from temperature-sensitive components such as LED driver ICs and capacitors.
  • the LED driver motherboard can be configured to have two wire layers. One wire layer is used for the component layout of the LED driver, and the other layer is used for the component layout of the detection device (this can be configured on different sides to reduce the cement cost). Resistors, etc. that are sensitive to temperature components). In this way, a low-cost anti-misconnection function can be achieved.
  • FIG. 5 a block diagram of a driving unit circuit of an LED lighting device according to an embodiment is shown.
  • the driving unit 22 converts the electrical signal Vin received from the external signal source 10 into an LED light-emitting unit. 30The role of the required driving signal Vo.
  • the driving unit 22 includes a rectification module 221, a filter module 222 and a conversion module 223.
  • the rectifier module 221 has an input end and an output end.
  • the rectifier module 221 can be a half-wave rectifier, a full-wave rectifier, a full-wave bridge rectifier or a voltage doubler rectifier, which is not limited in this application.
  • the electrical signal Vin output by the external signal source 10 is rectified by the rectifier module 221 to generate a direct current signal.
  • the input end of the rectifier module 221 is electrically connected to the external signal source 10.
  • the external signal source 10 is usually a commercial power voltage, that is, an AC signal of 90V-320V, 50/60Hz, which may include an AC signal within the voltage range.
  • the filter module 222 is used to filter the electrical signal output by the rectifier module 221, eliminate the AC component in the electrical signal, and then supply it to the subsequent stage circuit.
  • devices with special impedance characteristics for alternating current can usually be used to construct a filter circuit, such as a capacitor filter circuit, a ⁇ -type RC filter circuit (also known as a ⁇ -type resistor-capacitor filter circuit), and a ⁇ -type LC filter circuit. (also called ⁇ -type inductor-capacitor filter circuit), and electronic filter circuit.
  • a filter circuit such as a capacitor filter circuit, a ⁇ -type RC filter circuit (also known as a ⁇ -type resistor-capacitor filter circuit), and a ⁇ -type LC filter circuit. (also called ⁇ -type inductor-capacitor filter circuit), and electronic filter circuit.
  • one of the above filter circuits can be used to form the filter module 222.
  • the filter circuit 222 has an input terminal and an output terminal, and its input
  • the conversion module 223 plays the role of the drive signal Vo in the control circuit. For example, if the conversion module 223 is composed of a boost topology, the output voltage (drive signal Vo) of the power drive circuit 20 of the LED lighting device is greater than the input voltage value. (electrical signal Vin); if the conversion module 223 is composed of a buck topology, the output terminal voltage (driving signal Vo) of the power drive circuit 20 of the LED lighting device is less than the input terminal voltage value (electrical signal Vin).
  • the conversion module 223 has an input terminal and an output terminal. The input terminal is electrically connected to the output terminal of the filter module 222 , and the output terminal is electrically connected to the LED lighting unit 30 .
  • FIG. 6 shows a functional topology diagram of an LED lighting device according to an embodiment.
  • the electrical signal Vin is provided by the inductive ballast, and the electrical signal Vin is higher than the value in the protection device 21 .
  • the off-state voltage of the discharge tube G when the discharge tube 21 is in a conduction/short-circuit state, the cement resistor R releases heat and blows the fuse F, that is, no electrical signal enters the LED driver.
  • this application proposes an LED lighting device and a protection device thereof.
  • the drive unit converts the external signal into the voltage required by the LED lighting unit. of drive active signal; if the detection device receives an external signal higher than its own off-state voltage, it will blow the internal fuse to prevent external signals from entering the drive unit and play a role in protecting the circuit.

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Abstract

本申请公开一种LED照明装置及其保护装置。LED照明装置包括：保护装置、驱动单元及LED发光单元，其中，保护装置具有输入端和输出端，所述输入端电性连接外部信号源，所述保护装置包括发热器和熔断器，所述熔断器位于可以接收所述发热器发出热量的位置，当所述外部信号源提供的外部信号达到所述保护装置的保护标准时，所述发热器发热来协助熔断器熔断；驱动单元，所述保护装置的输出端耦接于所述驱动单元，所述驱动单元用以将所述外部信号转换为驱动信号；LED发光单元，其耦接于所述驱动单元，所述LED发光单元接收所述驱动单元输出的所述驱动信号。

Description

一种LED照明装置及其保护装置 技术领域
本申请涉及照明技术领域，尤其涉及一种LED照明装置及其保护装置。
背景技术
随着LED技术的发展，LED灯珠被广泛的被应用于高功率的照明装置中，以替换能耗高的光源，如HID光源。高功率LED照明装置的光源亮度高，所需功率大，但是不兼容于电感镇流器的场合。如高功率LED照明装置被误接在有电感镇流器的场合时，光源的驱动电路可能会因为电感镇流器提供的电流过大造成损伤，进而造成使用寿命降低。目前市面上的高功率LED照明装置基本没有配置防误接电路，仅有少部分装置通过增加小板检测逻辑，以在误接时使LED爆闪提示误接。然而，这种方式的控制复杂并且成本高，限制了其应用的范围。
发明内容
为克服上述存在的缺陷，本申请提出一种LED照明装置及其保护装置，该保护装置低成本实现防误接功能，以解决上述背景技术所提及的问题。
为了达到以上目的，本申请实施例采用如下技术方案：一种应用于LED照明装置的检测装置，其中LED照明装置包括LED驱动和LED发光单元，其特征在于，所述检测装置包括：电路板，所述电路板具有第一端、第二端，第三端及第四端，其中所述第三端及第四端用于连接镇流器或市电；所述第一端及第二端用于连接所述LED驱动，所述LED驱动电性连接所述LED发光单元；检测单元，配置在所述电路板上，其中所述检测单元包括阀门，其一端电性连接至所述第一端；发热器，其一端电性连接至所述阀门的另一端，且其另一端电性连接至所述第二端；以及熔断器，电性连接所述发热器及所述第三端和所述第四端其中之一，所述熔断器处于可以接收所述发热器发出的热量的位置。
较佳的，所述阀门为放电管。
较佳的，所述发热器为水泥电阻。
较佳的，所述熔断器为温度保险丝。
较佳的，所述检测装置连接电感镇流器时，所述阀门短路、所述发热器发热经预设的时间以熔断温度保险丝。
较佳的，所述温度保险丝配置成贴片式。
较佳的，所述温度保险丝为管式，其可插拔的配置于基座上，所述基座配置于所述电路板上。
较佳的，所述基座具有第一接脚和第二接脚，所述第一接脚电性连接至所述发热器，所述第二接脚电性连接至所述第三端或所述第四端。
本申请实施例还提出了一种LED照明装置，其特征在于，包括：保护装置，其具有输入端和输出端，所述输入端电性连接外部信号源，所述保护装置包括发热器和熔断器，所述熔断器位于可以接收所述发热器发出热量的位置，当所述外部信号源提供的外部信号达到所述保护装置的保护标准时，所述发热器发热来协助熔断器熔断；驱动单元，所述保护装置的输出端耦接于所述驱动单元，所述驱动单元用以将所述外部信号转换为驱动信号；及LED发光单元，其耦接于所述驱动单元，所述LED发光单元接收所述驱动单元输出的所述驱动信号。
较佳的，所述熔断器一端耦接于所述外部信号源，另一端耦接于所述驱动单元。
较佳的，所述保护装置还包括：阀门，所述阀门与所述发热器串联后两端均耦接于所述外部信号源和所述驱动单元；
较佳的，所述阀门配置为放电管。
较佳的，所述发热器配置为水泥电阻。
较佳的，所述熔断器配置为温度保险丝。
较佳的，所述直接提供即为市电不经任何电力转换设备调整传输到所述驱动单元。
较佳的，所述保护标准为外部信号经由电感镇流器提供。
较佳的，所述放电管断开，所述外部信号进入所述驱动单元。
较佳的，所述放电管导通/短路，所述外部信号不进入所述驱动单元。
基于上述，本申请实施例提供的装置具有如下优点：
当LED照明装置误接电感镇流器后高压输入使得保护装置内的阀门导通，发热器上功耗变大发热，导致贴近发热器的熔断器熔断开路。高压不会破坏驱动单元其他元器件，更换熔断器后驱动单元可正常工作。
附图说明
附图用来提供对本公开技术方案的理解，并且构成说明书的一部分，与本公开的实施例一起用于解释本公开的技术方案，并不构成对本公开技术方案的限制。附图中各部件的形状和大小不反映真实比例，目的只是示意说明本申请内容。
图1为本申请一实施例的LED照明装置的电路方块示意图；
图2为本申请一实施例的外部信号源的功能拓扑示意图；
图3为本申请一实施例的电源驱动电路的电路方块示意图；
图4为本申请一实施例的保护装置的功能拓扑示意图；
图5为本申请一实施例的电源驱动电路的电路方块示意图；及
图6为本申请一实施例的LED照明装置的功能拓扑示意图。
具体实施方式
以下结合具体实施例对上述方案做进一步说明。应理解，这些实施例是用于说明本申请而不限于限制本申请的范围。实施例中采用的实施条件可以如具体厂家的条件做进一步调整，未注明的实施条件通常为常规实验中的条件。
除非另外定义，本公开实施例使用的技术术语或者科学术语应当为本申请所属领域内具有一般技能的人士所理解的通常意义。本公开实施例中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连 接，不管是直接的还是间接的。在本文中，“电性连接”包括构成要素通过具有某种电作用的元件连接在一起的情况。“具有某种电作用的元件”只要可以进行连接的构成要素间的电信号的授受，就对其没有特别的限制。“具有某种电作用的元件”例如可以是电极或布线，或者是晶体管等开关元件，或者是电阻器、电感器或电容器等其它功能元件等。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在本申请中，术语“上”、“下”、“内”、“中”等指示的方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本申请及其实施例，并非用于限定所指示的装置、元件或组成部分必须具有特定方位，或以特定方位进行构造和操作。
本申请提供一种LED照明装置及其保护装置，所述LED照明装置配置有电源驱动电路及LED发光单元，LED发光单元耦接于电源驱动电路，用以接收电源驱动电路输出的驱动信号，所述电源驱动电路内设有保护装置，所述保护装置耦接外部信号源，且通过判断所述外部信号源提供的外部信号来控制所述LED照明装置的导通或开断，当外部信号直接来自市电时，也就是市电不经任何电力转换设备调整传输到电源驱动电路，所述外部信号(即为输入电信号)流入后级电路(也可称为驱动单元)，所述驱动单元将输入电信号转化为LED发光单元所需的驱动信号；当外部信号来自电感镇流器时，即市电通过电感镇流器提供输入电信号，保护装置内的熔断器熔断，输入电信号无法传入后级电路，即驱动单元失效不再工作，起到防误接作用。该LED照明装置可为HID灯(HID-LED，High intensity Discharge-LED)，如授权公告号为CN 211010828 U中揭示的LED灯，其功率介于150W-300W,其光通量可达到20000流明至45000流明左右。
请参阅图1，显示为本申请一实施例的LED照明装置的电路方块示意图。如图1所示，外部信号源10耦接于电源驱动电路20，用以提供电信号Vin。所述电源驱动电路20具有第一输入端和第一输出端，其中，第一输入端用于耦接外部信号源10，第一输出端耦接于LED发光单元30。电源驱动电路20通过第一输出端将驱动信号Vo提供给LED发光单元30。在一些实施例中，电源驱动电路20与LED发光单元30可以通过导线连接。
外部信号源10通常有两种方式输出电信号Vin，方式一为直接由市电提供电信号Vin， 也就是市电不经任何电力转换设备调整传输到电源驱动电路20，通常市电是指在90V到320V范围内电压；方式二请参阅图2，显示为外部信号源10是市电经过电感镇流器调整后提供电信号Vin，在一些实施例中，120V的市电经过电感镇流器后能够输出550V的电压。
请参阅图3，显示为本申请一实施例的电源驱动电路的电路方块示意图。如图3所示，电源驱动电路20包括保护装置21及驱动单元22，所述保护装置21具有输入端和输出端，其输入端耦接外部信号源10，用于接收外部信号源10输出的电信号Vin，其输出端耦接于驱动单元22。保护装置21的输入端耦接的外部信号源10为方式一的情况下，所述保护装置21工作在通常状态，其输出端向驱动单元22传递电信号，即驱动单元22工作，所述驱动单元22输出驱动信号Vo至LED发光单元30；保护装置21的输入端耦接的外部信号源10为方式二的情况下，所述保护装置21工作在异常状态，其输出端没有电信号传递至驱动单元22，即驱动单元22不工作。
进一步地，请参阅图4，显示为本申请一实施例的保护装置的功能拓扑示意图。如图4所示，保护装置21包括：阀门G、发热器R及熔断器F，该阀门G与发热器R电性串联后两端均耦接于外部信号源10和驱动单元22，熔断器F一端电性连接至外部信号源10，另一端耦接于阀门G与发热器R电性串联后的其中一端，也可以说该端电性连接驱动单元22。
所述阀门具有导通和断开两种模式，且存在一阈值。当保护装置的输入端耦接的外部信号源为方式一时，外部信号源提供的外部信号无法达到阀门阈值，此时阀门处于断开模式，几乎没有电流流过阀门，即保护装置处于通常状态；当保护装置的输入端耦接的外部信号源为方式二时，外部信号源提供的外部信号至少有一时刻能够达到阀门阈值，致使阀门切换至导通模式，此时有大电流流过阀门，即保护装置处于异常状态，几乎没有电流流向驱动单元。
发热器通常具有外形尺寸较大、防潮、耐热、防震动及散热快等特性，可应用于电流较大的场合，在本实施例中，因其自身阻值较大，且散热性能良好，当阀门进入导通状态时，发热器可以快速响应流经自身的大电流而散热。
本实施例中的熔断器是一对温度敏感的器件，其响应于自身产生的热量以及从外部接收到的热量，当热量总值达到熔断器的规定值时，热量会使熔断器的熔体熔化，进而 断开熔断器所在线路。即当阀门工作在导通状态时，大电流流过发热器和熔断器，熔断器响应于自身产生的热量与接收到的发热器发出的热量而断开，实现保护电路的作用。
在本实施例中，阀门G可为放电管G，发热器R可为水泥电阻R，放电管G串联于水泥电阻R的一端。熔断器F一端电性连接水泥电阻R的另一端(即，不与放电管G相连的一端)，并且熔断器F的另一端耦接于外部信号源10。所述保护装置21用于在电源驱动电路20的第一输入端耦接的外部信号源10为方式二(即，电源驱动电路20误接于电感镇流器)的情况下，切断外部信号源10与驱动单元22的信号传输。
在一实施例中，保护装置21通过将熔断器F熔断来断开驱动单元22与外部信号源10的电性连接。本实施方式中，熔断器F采用温度保险丝，其位于可以接收水泥电阻R发出热量的位置，用以充分地接收水泥电阻R产生的热量。
从另一个角度描述，保护装置也可以是检测装置，所述检测装置具有：电路板，该电路板是一硬件结构，其具有第一端、第二端，第三端及第四端，该第三端及第四端用于连接镇流器或市电；该第一端及第二端用于连接LED驱动(如通过导线连接LED驱动)，该LED驱动电性连接LED发光单元。其中第一端和第二端就是保护装置21的输出端，第三端和第四端是保护装置21的输入端，LED驱动即为驱动单元22。
电路板上设有检测单元，该检测单元包括：放电管G、水泥电阻R及熔断器F，该放电管G与水泥电阻R电性串联后两侧段分别电性连接至第一端及第二端，熔断器F电性连接水泥电阻R及第三端或第四端，用于在误接与电感镇流器时，熔断器F熔断、断开与电感镇流器的电性连接。本实施方式中，熔断器F采用温度保险丝，其靠近水泥电阻R，用以充分的接收水泥电阻R的热量。较佳的，温度保险丝配置成贴片式。在一实施方式中，温度保险丝配置成可插拔的安装于电路板上。检测装置还包括基座，其安装于电路板上，基座具有第一接脚，其电性连接至水泥电阻R，第二接脚其电性连接至第三端或第四端，温度保险丝可插拔的配置于该基座上，且温度保险丝靠近水泥电阻R。
本实施方式的机理：若保护装置输入端耦接的外部信号为方式二的情况下，即保护装置输入端误接至电感镇流器，电感镇流器输出到保护装置的电信号Vin高于保护装置中阀门的阈值，此时阀门短路/导通，使得与之串联的发热器功耗变大放出热量，熔断器位于可以接收所述发热器发出热量的位置，发热器可以通过发出的热量来协助熔断器熔 断，更快地阻止了电信号Vin流向驱动单元，起到保护电路的作用。
上述实施方式中，放电管是一种高压保护元件。若其两端的电压高过其保护规格值时，其内部会出现短路现象，并吸收掉输入的过高压。也可以说，放电管是一种过压保护器件，其利用晶闸管原理制成，依靠PN结的击穿原理导通放电，可以流过很大的浪涌电流或者脉冲电流。放电管存在一断态电压(即为阈值)，本实施例中，所述断态电压为400V，当外加电压低于放电管的断态电压时，器件处于断开状态，即在保护装置输入端耦接的外部信号源10为方式一的情况下，此时保护装置处于通常状态；当外加电压超过它的断态电压(或外加电压持续增大)时，即在保护装置输入端耦接的外部信号源10为方式二的情况下，此时保护装置处于异常状态，所述放电管由于负载效应进入导通状态，此时近乎短路；当外加电压恢复正常，也就是恢复到方式一的供电模式下，放电管自动复位并恢复到高阻抗状态。在一些实施例中，120V的市电经过电感镇流器后能够输出550V的电压，该电压作为电信号Vin进入到保护装置21，此时的电信号Vin高于放电管的断态电压，放电管进入短路/导通状态，大电流流经与放电管串联的水泥电阻，水泥电阻放热，对温度敏感的熔断器接收到水泥电阻散发的一定热量值后断开，所述熔断器可选择温度保险丝。
也可以说，若误接至电感镇流器，电感镇流器120VAC输入电压被拉高到550V，此时放电管短路/导通，可通过设置水泥电阻阻值P＝U2/R，水泥电阻散热，来熔断温度保险丝在一些实施例中，可以通过匹配水泥电阻阻值，来控制温度保险丝熔断时间，达到需要的保护时间如1s、3s、5s等，所述保护时间即为温度保险丝容忍接收到水泥电阻散发热量和自身产生的热量后经过1s、3s、5s等熔断，例如，水泥电阻周围的布件皆为对温度不敏感或温度对其影响不大的元器件时，可以控制其保护时间为5s；周围布件为系统主控芯片(IC)等重要且温度对其影响较大的元器件时，要控制其保护时间为1s，即尽快切断检测装置与外部信号的联系。还可在水泥电阻阻值一定的情况下，通过调整水泥电阻与温度保险丝间的距离控制温度保险丝熔断时间，达到需要的保护时间。
在一较佳的实施方式中，检测装置集成于LED驱动上，温度保险丝采用可插拔的方式安装在LED驱动上。此时水泥电阻远离LED驱动的IC，电容等对温度敏感的元器件。此时LED驱动的主板可配置成具有2层导线层，1层导线层用于布局LED驱动的元器件布局，另一层用于检测装置的元器件布局(此时可不同侧配置，降低水泥电阻等对温度敏感的 元器件的影响)。以此实现低成本的防误接功能。
参照图5，显示为一实施例的LED照明装置的驱动单元电路方块示意图。如图5所示，在电源驱动装置第一输入端耦接的外部信号源10为方式一的情况下，驱动单元22起到将从外部信号源10接入的电信号Vin转化为LED发光单元30所需驱动信号Vo的作用。驱动单元22包括整流模块221、滤波模块222以及转换模块223。其中，整流模块221具有输入端和输出端，整流模块221可以是半波整流、全波整流、全波桥式整流或倍压整流，本申请中不做限定。外部信号源10输出的电信号Vin通过整流模块221整流，以产生直流电信号。整流模块221的输入端电性连接外部信号源10，在本实施例中，外部信号源10通常为市电电压，即90V-320V，50/60Hz的交流信号，其可包括所述电压范围内的每一个整数数值点，例如90V、91V、92V……。
滤波模块222用以对整流模块221输出的电信号进行滤波，消除该电信号中的交流成分后供给后级电路。在滤波模块222中，通常可利用对交流电有特殊阻抗特性的器件来构建滤波电路，例如，电容滤波电路、π型RC滤波电路(也称为π型电阻电容滤波电路)、π型LC滤波电路(也可称为π型电感电容滤波电路)、以及电子滤波电路。本实施例可选用上述滤波电路中的其中一种来构成滤波模块222。滤波电路222具有输入端和输出端，其输入端电性连接至整流模块221的输出端。
转换模块223起到控制电路中的驱动信号Vo的作用，例如，若转换模块223由升压拓扑构成，则LED照明装置的电源驱动电路20的输出端电压(驱动信号Vo)大于输入端电压值(电信号Vin)；若转换模块223由降压拓扑构成，则LED照明装置的电源驱动电路20的输出端电压(驱动信号Vo)小于输入端电压值(电信号Vin)。转换模块223具有输入端和输出端，其输入端电性连接至滤波模块222的输出端，输出端电性连接至LED发光单元30。
请参阅图6，显示为一是实施例的LED照明装置的功能拓扑示意图。如图6所示，在电源驱动装置20第一输入端耦接的外部信号源10为方式二的情况下，电信号Vin由电感镇流器提供，所述电信号Vin高于保护装置21中放电管G的断态电压，此时放电管21处于导通/短路状态，水泥电阻R放热熔断熔断器F，即没有电信号进入LED驱动。
综上所述，本申请提出了一种LED照明装置及其保护装置，所述保护装置在接收到低于自身断态电压的外部信号时，由驱动单元将外部信号转换为LED发光单元所需的驱 动信号；若所述检测装置在接收到高于自身断态电压的外部信号时，则熔断内部的熔断器，阻止外部信号传入驱动单元，起到保护电路的作用。
上述实施例只为说明本申请的技术构思及特点，其目的在于让熟悉此项技术的人是能够了解本申请的内容并据以实施，并不能以此限制本申请的保护范围。凡如本申请精神实质所做的等效变换或修饰，都应涵盖在本申请的保护范围之内。

Claims (18)

  1. 一种应用于LED照明装置的检测装置，其中LED照明装置包括LED驱动和LED发光单元，其特征在于，所述检测装置包括：
    电路板，所述电路板具有第一端、第二端，第三端及第四端，其中所述第三端及第四端用于连接镇流器或市电；所述第一端及第二端用于连接所述LED驱动，所述LED驱动电性连接所述LED发光单元；
    检测单元，配置在所述电路板上，其中所述检测单元包括：
    阀门，其一端电性连接至所述第一端；
    发热器，其一端电性连接至所述阀门的另一端，且其另一端电性连接至所述第二端；以及
    熔断器，电性连接所述发热器及所述第三端和所述第四端其中之一，所述熔断器处于可以接收所述发热器发出的热量的位置。
  2. 如权利要求1所述的应用于LED照明装置的检测装置，其特征在于，所述阀门为放电管。
  3. 如权利要求1所述的应用于LED照明装置的检测装置，其特征在于，所述发热器为水泥电阻。
  4. 如权利要求1所述的应用于LED照明装置的检测装置，其特征在于，所述熔断器为温度保险丝。
  5. 如权利要求4所述的应用于LED照明装置的检测装置，其特征在于，
    所述检测装置连接电感镇流器时，所述阀门短路、所述发热器发热经预设的时间以熔断温度保险丝。
  6. 如权利要求4所述的应用于LED照明装置的检测装置，其特征在于，
    所述温度保险丝配置成贴片式。
  7. 如权利要求4所述的应用于LED照明装置的检测装置，其特征在于，
    所述温度保险丝为管式，其可插拔的配置于基座上，所述基座配置于所述电路板上。
  8. 如权利要求7所述的应用于LED照明装置的检测装置，其特征在于，
    所述基座具有第一接脚和第二接脚，所述第一接脚电性连接至所述发热器，所述第二接 脚电性连接至所述第三端或所述第四端。
  9. 一种LED照明装置，其特征在于，包括：
    保护装置，其具有输入端和输出端，所述输入端电性连接外部信号源，所述保护装置包括发热器和熔断器，所述熔断器位于可以接收所述发热器发出热量的位置，当所述外部信号源提供的外部信号达到所述保护装置的保护标准时，所述发热器发热来协助熔断器熔断；
    驱动单元，所述保护装置的输出端耦接于所述驱动单元，所述驱动单元用以将所述外部信号转换为驱动信号；及
    LED发光单元，其耦接于所述驱动单元，所述LED发光单元接收所述驱动单元输出的所述驱动信号。
  10. 如权利要求9所述的LED照明装置，其特征在于，所述熔断器一端耦接于所述外部信号源，另一端耦接于所述驱动单元。
  11. 如权利要求10所述的LED照明装置，其特征在于，所述保护装置还包括：
    阀门，所述阀门与所述发热器串联后两端均耦接于所述外部信号源和所述驱动单元；
  12. 如权利要求11所述的LED照明装置，其特征在于，所述阀门配置为放电管。
  13. 如权利要求11所述的LED照明装置，其特征在于，所述发热器配置为水泥电阻。
  14. 如权利要求10所述的LED照明装置，其特征在于，所述熔断器配置为温度保险丝。
  15. 如权利要求9所述的LED照明装置，其特征在于，所述外部信号由市电直接提供，所述直接提供即为市电不经任何电力转换设备调整传输到所述驱动单元。
  16. 如权利要求9所述的LED照明装置，其特征在于，所述保护标准为外部信号经由电感镇流器提供。
  17. 如权利要求15所述的LED照明装置，其特征在于，所述放电管断开，所述外部信号进入所述驱动单元。
  18. 如权利要求16所述的LED照明装置，其特征在于，所述放电管导通/短路，所述外部信号不进入所述驱动单元。
PCT/CN2023/099053 2022-06-08 2023-06-08 一种led照明装置及其保护装置 WO2023237036A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009289658A (ja) * 2008-05-30 2009-12-10 Toshiba Lighting & Technology Corp 電球形蛍光ランプ
US10004123B1 (en) * 2016-11-02 2018-06-19 Universal Lighting Technologies, Inc. Failure detection and alerting circuit for a differential mode surge protection device in an LED driver
US10264641B1 (en) * 2017-07-05 2019-04-16 Universal Lighting Technologies, Inc. Lighting system and method for dynamically regulating driven current to an analog or digital dimming interface
CN210093609U (zh) * 2019-01-31 2020-02-18 东莞市蓝铁实业有限公司 Led驱动电源控制电路

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009289658A (ja) * 2008-05-30 2009-12-10 Toshiba Lighting & Technology Corp 電球形蛍光ランプ
US10004123B1 (en) * 2016-11-02 2018-06-19 Universal Lighting Technologies, Inc. Failure detection and alerting circuit for a differential mode surge protection device in an LED driver
US10264641B1 (en) * 2017-07-05 2019-04-16 Universal Lighting Technologies, Inc. Lighting system and method for dynamically regulating driven current to an analog or digital dimming interface
CN210093609U (zh) * 2019-01-31 2020-02-18 东莞市蓝铁实业有限公司 Led驱动电源控制电路

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