CN201448784U - Auto-sensing LED fluorescent lamp - Google Patents

Abstract

The utility model relates to an automatic induction LED fluorescent lamp, which belongs to the technical field of LED lighting. The utility model is an improvement on the structure of the existing LED fluorescent lamp. control circuit, when the illuminance of light irradiated on the light control element is greater than 3LUX during the day, no matter whether the infrared detection circuit receives the infrared signal sent by the human body, the electronic switch is closed, and when the illuminance of light irradiated on the light control element is less than 3LUX , if the infrared detection circuit receives the infrared signal sent by the human body, the electronic switch is turned on at this time, and the LED light source is lit. The structure is simple, and it can be turned on again when lighting is needed, which is beneficial to further energy saving and has strong practicability.

Description

Auto-sensing LED fluorescent lamp

technical field

The utility model relates to an automatic induction LED fluorescent lamp, which belongs to the technical field of LED lighting.

Background technique

The most notable feature of LED light source is energy saving. It has been widely developed and used in recent years. LEDs are placed in tubes and used like fluorescent lamps in the past. The current LED fluorescent lamps generally have two structures. One is to connect several LEDs in series. The parallel connection is welded and fixed on the circuit board placed in the tube, and the circuit board is connected to the circuit board after being transformed and rectified by one line of mains power. Respectively through the transformer rectification and then connected to the circuit board. The common deficiency that these two kinds of LED fluorescent lamps exist is that they cannot be turned on or turned on or turned off like the commonly used lamps. Great emphasis is placed on energy saving, especially in places such as underground parking lots. It is completely possible to turn on the light when it is needed, and there is no need to waste energy by constantly turning it on.

Contents of the invention

The purpose of the utility model is to provide an automatic induction LED fluorescent lamp, which overcomes the shortage of energy waste in the existing LED fluorescent lamps, and realizes re-lighting when lighting is needed by the utility model, which is beneficial to further save energy.

The purpose of this utility model is achieved through the following technical solutions. An automatic induction LED fluorescent lamp includes a lamp tube, a circuit board of several LEDs welded in the tube, and plugs at both ends of the lamp tube. It is characterized in that one end of the lamp tube is close to the plug The configuration includes a control circuit of light control and infrared control and a power supply circuit, and the source end of the power supply circuit is connected to the plug at the corresponding end.

The control circuit including light control and infrared control consists of an ambient light detection head, an infrared signal detection head fixed on the tube wall, a detection signal integrated processing circuit, a delay circuit and an electronic switch circuit, an ambient light detection head, an infrared signal detection The heads are respectively connected to the corresponding signal input terminals of the detection signal integrated processing circuit, the output terminal of the detection signal integrated processing circuit is connected to the delay circuit, the delay output of the delay circuit is connected to the control terminal of the electronic switch circuit, and the output of the electronic switch circuit is connected to the LED line plate.

The detection signal integrated processing circuit adopts PT8A2648WE integrated circuit.

The ambient light detection head is composed of a photoresistor and its peripheral circuits.

The infrared signal detection head is composed of a Fresnel lens and a pyroelectric human body infrared sensor at the focal point of the lens, and the output of the sensor is connected to the corresponding signal input end of the detection signal integrated processing circuit.

The electronic switch circuit adopts a thyristor tube, and the control pole of the thyristor tube is connected to a delay circuit.

The utility model is an improvement to the structure of the existing LED fluorescent lamp. By setting a control circuit including light control and infrared control at one end of the lamp tube of the circuit board with several LEDs, when the light illuminance irradiated on the light control element is greater than 3LUX in the daytime , regardless of whether the infrared detection circuit receives the infrared signal sent by the human body, the electronic switch is closed, and the utility model is in a standby state, and the standby power at this time is less than 0.15W (basically no power consumption after testing); when irradiated on the light control element When the illuminance of the light is less than 3LUX, if the infrared detection circuit receives the infrared signal sent by the human body, the electronic switch is turned on at this time, and the LED light source is lit. When the infrared signal disappears, the utility model will enter the standby state after a delay of 80s; The new starting and controlling light can be set between 0.5-10LUX according to actual needs, and the delay time can be set between 5s-30min. The setting of the delay time is realized by adjusting the corresponding resistance of the peripheral circuit of PT8A2648WE; Continuous switching twice within two seconds can realize the two state transitions of constant light and automatic induction. The new type has a simple structure and realizes that it can be turned on again when lighting is needed, which is conducive to further saving energy and has strong practicability.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a circuit diagram of the utility model;

Fig. 3 is a circuit diagram of an embodiment of the utility model including an ambient light detection circuit, an infrared signal detection circuit, a detection signal integrated processing circuit, and a delay circuit;

Detailed ways

Further illustrate the utility model in conjunction with accompanying drawing and embodiment, as shown in Figure 1, the utility model is made of lamp tube 1, the circuit board 2 of some LEDs welded in lamp tube 1, the plug 3 of lamp tube 1 two ends, lamp tube 1. A control circuit 4 including light control and infrared control and a power circuit are arranged near the plug 3 at one end, and the source end of the power circuit is connected to the plug 3 at the corresponding end. The ambient light detection head 5 and the infrared signal detection head 6 in the control circuit 4 including light control and infrared control are fixed on the tube wall. As shown in Figure 2, the control circuit 4 comprising light control and infrared control is composed of a detection signal integrated processing circuit, a delay circuit, an electronic switch circuit, an ambient light detection head 5, and an infrared signal detection head 6. The ambient light detection head 5, The infrared signal detection heads 6 are respectively connected to the corresponding signal input terminals of the detection signal integrated processing circuit, the output terminal of the detection signal integrated processing circuit is connected to the delay circuit, the delay output of the delay circuit is connected to the control terminal of the electronic switch circuit, and the output of the electronic switch circuit The circuit board connected to the LED. The detection signal integrated processing circuit adopts the PT8A2648WE chip, and the PT8A2648WE chip includes a delay circuit. The setting of the delay time is realized by adjusting the corresponding resistance of the PT8A2648WE peripheral circuit; The timing circuit is used to realize the two state transitions of constant light and automatic induction. The ambient light detection head is composed of a photoresistor and its peripheral circuit; the infrared signal detection head is composed of a Fresnel lens and a pyroelectric human body infrared sensor at the focal point of the lens, and the output of the sensor is connected to the corresponding signal input terminal of the detection signal integrated processing circuit.

Claims (6)

1. An automatic induction LED fluorescent lamp, comprising a lamp tube, a circuit board of several LEDs welded in the tube, plugs at both ends of the lamp tube, characterized in that one end of the lamp tube is provided with a control circuit comprising light control and infrared control near the plug and A power supply circuit, the source end of the power supply circuit is connected to the plug at the corresponding end. 2. The auto-sensing LED fluorescent lamp according to claim 1, wherein the control circuit including light control and infrared control includes an ambient light detection head and an infrared signal detection head fixed on the tube wall, which are arranged in the tube The detection signal integrated processing circuit, the delay circuit and the electronic switch circuit; the ambient light detection head and the infrared signal detection head are respectively connected to the corresponding signal input terminals of the detection signal integrated processing circuit, and the output terminal of the detection signal integrated processing circuit is connected to the delay circuit. The delay output of the delay circuit is connected to the control terminal of the electronic switch circuit, and the output of the electronic switch circuit is connected to the circuit board of the LED. 3. The auto-sensing LED fluorescent lamp according to claim 1, wherein the detection signal integrated processing circuit adopts PT8A2648WE integrated circuit. 4. The auto-sensing LED fluorescent lamp according to claim 1, wherein the ambient light detection head is composed of a photoresistor and its peripheral circuits. 5. The automatic induction LED fluorescent lamp according to claim 1, characterized in that, the infrared signal detection head is composed of a Fresnel lens and a pyroelectric human body infrared sensor at the focal point of the lens, and the output of the sensor is connected to the detection signal integration The corresponding signal input terminal of the processing circuit. 6 . The automatic induction LED fluorescent lamp according to claim 1 , wherein the electronic switch circuit adopts a thyristor, and the control pole of the thyristor is connected to a delay circuit. 7 .

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