CN201289040Y - Temperature control device for LED lamp - Google Patents

Abstract

The utility model provides a temperature control device for LED lamps, which is mainly composed of a temperature control circuit unit, an LED lamp group and a temperature sensing element. When the temperature sensing element detects that the temperature of the LED lamp group is too high, it will send a signal to the temperature control circuit unit, and the temperature control circuit unit will reduce the voltage supplied to the LED lamp group; the temperature of the LED lamp group is controlled by appropriately adjusting the voltage, so as to avoid light decay or burning of components of the LED lamp group due to excessive temperature.

Description

A temperature control device for LED lamps

technical field

The utility model relates to a temperature control device, in particular to a temperature control device for an LED lamp.

Background technique

Since the advent of LED (Light Emitting Diode), lighting equipment has started the second revolution after Edison. LED has various advantages such as power saving, small size, high efficiency, and large plasticity. At present, various industries are committed to using LEDs to make their products more power-saving and smaller.

However, LEDs are not perfect, and their biggest drawback is that LED luminaires operate at temperatures higher than the critical temperature of their components. The working temperature of the LED light bulb itself is actually very low, but because the LED lamp needs to be equipped with a driver to work normally, and the chips and other parts contained in the driver will continue to heat up during the working state; High environment, and its heat source mainly comes from the drive. However, the high-temperature working environment will directly affect the lifespan of various parts in the LED lamp group; especially the chip in the driver, if it continues to work at high temperature, the chip will be damaged and burned soon. Furthermore, too high an operating temperature will also result in loss of light attenuation due to reduced brightness.

In order to solve the problem of overheating, it is often solved by adding heat sinks to LED lamps; although adding heat sinks can help reduce the temperature, the effect is still limited; long-term use or use in poorly ventilated places, even worse. The heatsink appears to be ineffective.

Contents of the invention

The main purpose of the utility model is to provide an LED lamp temperature control device to control the working temperature of the LED lamp by adjusting the voltage.

In order to achieve the above purpose, the utility model provides a LED lamp temperature control device, which mainly includes a temperature sensing element, a temperature control circuit unit and an LED lamp group, and the temperature control circuit unit outputs power for the LED lamp group to use; The temperature sensing element is used to detect the temperature of the LED lamp group and send a signal to the temperature control circuit unit.

Compared with the prior art, the LED lamp temperature control device described in the present invention uses alternating current (such as mains) to input the rectifier circuit unit, and the rectifier circuit unit converts the alternating current into direct current and then outputs it to the temperature control circuit unit; the temperature control circuit The unit then outputs direct current to the LED lighting group to make the LED lighting group work normally; when the LED lighting group works for a period of time, the temperature begins to rise; at this time, when the temperature sensing element detects that its temperature reaches the set critical value, it sends a signal to the temperature In the control circuit unit, the voltage of the output power is reduced by the temperature control circuit unit, so that the LED lamp group can work at a lower voltage, and its temperature will also drop to a safe range. Through the above method of sensing temperature and then adjusting voltage, chips and other parts in the LED lamp group can be protected from being damaged or burned due to high temperature.

Description of drawings

Fig. 1 is the circuit block diagram of the present utility model.

Explanation of reference signs: 11 - rectification circuit unit; 12 - temperature control circuit unit; 13 - LED lamp group 131 - temperature sensing element; 14 - alternating current input; 15 - direct current input.

Detailed ways

The above-mentioned and other technical features and advantages of the present utility model will be described in more detail below in conjunction with the accompanying drawings.

First please refer to Fig. 1, the LED lamp temperature control device described in the utility model is mainly composed of a rectifier circuit unit 11, a temperature control circuit unit 12, an LED lamp group 13 and a temperature sensing element 131, and its configuration is as follows: The rectifier circuit unit 11 is connected to the temperature control circuit unit 12, and the temperature control circuit unit 12 is connected to the LED lamp group 13, and the LED lamp group 13 may have a built-in temperature sensing element 131, and the temperature sensing element 131 is further connected to the temperature control unit. unit 12 to transmit the signal.

The main function of the utility model is to convert the input rectification circuit unit 11 into direct current with alternating current input 14, and output the direct current to the temperature control circuit unit 12; 15 temperature control circuit unit 12. The temperature control circuit unit 12 outputs power of an appropriate voltage for use by the LED lamp group 13 according to the requirements of the LED lamp group 13; however, after the LED lamp group 13 starts working, the temperature of each part and the body will rise. The sensing element 131 is responsible for monitoring the temperature of the LED lamp group 13; when the temperature is too high and reaches a critical value, the temperature sensing element 131 sends a signal to the temperature control circuit unit 12 to reduce the supplied voltage; Working under high power, the temperature also drops. Through the aforementioned effects, the utility model can protect the LED lamp group 13 so that its parts will not be damaged or light decayed due to too high working temperature; especially the chips contained in the LED lamp group 13 are easily burned at high temperature, by Monitoring the temperature and adjusting the voltage can control the temperature in real time, which can protect the chip from damage. Therefore, the utility model can indeed achieve the specific effects of monitoring temperature and protecting parts.

In this case, when the temperature sensing element detects that the temperature of the LED lamp group reaches the set upper limit, the temperature control circuit unit will appropriately reduce the voltage; on the contrary, when the temperature sensing element detects that the temperature of the LED lamp group reaches the set lower limit , can make the temperature control circuit unit increase the voltage appropriately.

The above description is only illustrative of the present utility model, rather than restrictive. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. , or equivalent, but all will fall within the protection scope of the present utility model.

Claims (3)

1, a kind of LED light fixture attemperating unit is characterized in that, it mainly comprises temperature sensitive member, temperature-control circuit unit and LED light fixture group, and described temperature-control circuit unit output power uses for described LED light fixture group; Described temperature sensitive member is used to detect the temperature of LED light fixture group, and sends a signal to described temperature-control circuit unit.

2, LED light fixture attemperating unit as claimed in claim 1 is characterized in that, is built in described LED light fixture group in the described temperature sensitive member.

3, LED light fixture attemperating unit as claimed in claim 1 is characterized in that, described temperature sensitive member is added on described LED light fixture group outward.

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