LED illuminating lamp with infrared induction function

Abstract

The utility model relates to the technical field of lighting lamps, aims to solve the technical problem that safety risks exist when cabinet lamps are turned on and off, and discloses an LED lighting lamp with an infrared induction function, which comprises a first rectification filter circuit and a second rectification filter circuit. The selective switch is used for directly supplying power to the first rectifying and filtering circuit or the second rectifying and filtering circuit, an infrared induction circuit and a control circuit are arranged at the rear stage of the second rectifying and filtering circuit, the control circuit is connected with a relay controlled by the control circuit, and the switch end of the relay is connected with the movable contact end of the selective switch in parallel. The selection switch can selectively switch on the second rectification filter circuit and start the infrared induction circuit, the infrared induction circuit can control the relay to act through the control circuit and indirectly switch on the first rectification filter circuit so as to turn on the illuminating lamp, and the lamp is controlled by adopting infrared induction gestures which are not in contact with a human body. The risk of electric leakage injury caused by hand or environment humidity is avoided, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting lamps, in particular to an LED lighting lamp with infrared induction. Background Art

[0002] Cabinet lights are a type of lighting fixture specifically used for cabinet lighting and decoration. It can not only provide sufficient lighting to facilitate users to find the items they need in the cabinet, but also beautify the interior space of the cabinet and enhance the overall visual effect and decorativeness.

[0003] Traditional cabinet lights need to be turned on and off manually. Given the complex environment of the kitchen, especially the influence of moisture, such as a humid environment or hands coming into contact with water during cooking (washing vegetables and dishes), manually turning the lights on and off poses a risk of electric shock and is unsafe. Utility Model Content

[0004] The purpose of the utility model is to provide an LED lighting fixture with infrared sensing to solve the technical problem of safety risks when cabinet lights are turned on and off.

[0005] To achieve the above-mentioned purpose, the utility model provides an LED lighting fixture with infrared sensing, including a first rectifier and filter circuit, a boost circuit is arranged at the rear stage of the first rectifier and filter circuit, the rear stage of the boost circuit is connected to an output interface for supplying power to a lamp board, a second rectifier and filter circuit, and a selection switch for directly supplying power to the first rectifier and filter circuit or the second rectifier and filter circuit, the rear stage of the second rectifier and filter circuit is arranged with an auxiliary power supply, an infrared sensing circuit and a control circuit, the auxiliary power supply is used to supply power to the infrared sensing circuit and the control circuit, the control circuit is connected to a relay controlled by the auxiliary power supply, and the switch end of the relay is connected in parallel with the moving contact end of the selection switch.

[0006] Furthermore, an EMC circuit is provided in the front stage of the selection switch, and the EMC circuit includes a common mode inductor LF2 connected in series in the mains input circuit and an X capacitor CX2 and a varistor MOV1 connected in parallel in the mains input circuit.

[0007] Furthermore, the common end of the selection switch is connected to the first output end of the common-mode inductor LF2, the first moving contact end of the selection switch is connected to the first input end of the first rectifier and filter circuit, the second input end of the first rectifier and filter circuit is connected to the second output end of the common-mode inductor LF2, the second moving contact end of the selection switch is connected to the first input end of the second rectifier and filter circuit, and the second input end of the second rectifier and filter circuit is connected to the second output end of the common-mode inductor LF2.

[0008] Furthermore, the relay includes a switch S1 and a coil L1 for attracting the switch S1, and the two ends of the switch S1 are respectively connected to the first moving contact end and the second moving contact end of the selection switch; the control circuit includes an NPN-type transistor Q13 and a control module U1, the first end of the coil L1 is grounded through a capacitor C13, the second end of the coil L1 is connected to the collector of the transistor Q13, the emitter of the transistor Q13 is grounded, and the base of the transistor Q13 is connected to the control module U1.

[0009] The LED lighting fixture with infrared sensing provided by the utility model has the following advantages:

[0010] The selection switch SW1 can select different circuits to be connected. When the first rectifying and filtering circuit is directly connected, the lighting lamp is normally turned on. When the second rectifying and filtering circuit is directly connected, the infrared sensing circuit can be started, and the infrared sensing circuit can control the relay action through the control circuit to indirectly connect the first rectifying and filtering circuit, thereby turning on the lighting lamp.

[0011] The use of infrared induction gestures without human contact to control the lamps effectively avoids the risk of electric leakage caused by hands or humid environment, and improves the safety of use. Users do not need to touch the switch directly, but can control the lamp switch by gestures, which is more convenient to operate and is especially suitable for humid environments such as kitchens. At the same time, it avoids energy waste when no one is around for a long time, achieves energy saving and environmental protection, and reduces the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a functional block diagram of the LED lighting fixture with infrared sensing provided by the utility model;

[0013] Figure 2 The control circuit diagram of the EMC circuit, the second rectifier filter circuit and the selection switch provided by the utility model;

[0014] Figure 3 The infrared sensing circuit and control circuit diagram provided by the utility model;

[0015] Figure 4 This is a first rectifier filter circuit and a boost circuit diagram provided by the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] See also Figure 1The utility model provides an LED lighting fixture with infrared sensing, which is applied to cabinet lights, including a first rectifier and filter circuit, a boost circuit is arranged at the rear stage of the first rectifier and filter circuit, the rear stage of the boost circuit is connected to an output interface for supplying power to a lamp board, a second rectifier and filter circuit, and a selection switch SW1 for directly supplying power to the first rectifier and filter circuit or the second rectifier and filter circuit, an auxiliary power supply, an infrared sensing circuit and a control circuit are arranged at the rear stage of the second rectifier and filter circuit, the auxiliary power supply is used to supply power to the infrared sensing circuit and the control circuit, the control circuit is connected to a relay controlled by the auxiliary power supply, and the switch end of the relay is connected in parallel with the moving contact end of the selection switch SW1.

[0018] The selection switch SW1 can select different circuits to be connected. When the first rectifying and filtering circuit is directly connected, the lighting lamp is normally turned on. When the second rectifying and filtering circuit is directly connected, the infrared sensing circuit can be started, and the infrared sensing circuit can control the relay action through the control circuit to indirectly connect the first rectifying and filtering circuit, thereby turning on the lighting lamp.

[0019] The use of non-human contact infrared gesture-controlled switches avoids the risk of electric leakage injuries caused by wet hands or a humid kitchen environment, thereby improving safety of use. By controlling the lighting switch with gesture sensing, users do not need to touch the switch directly, making the operation more convenient and particularly suitable for use in humid environments such as kitchens. Through infrared sensing technology, lamps can be turned on and off according to user gestures, thus avoiding energy waste when no one is around for a long time, saving energy and reducing the impact on the environment.

[0020] It can be seen that since users do not need to directly touch the switch, the design of the lamp can be more waterproof and moisture-proof, which improves the service life and stability of the lamp. Infrared gesture sensing control switch lighting has the beneficial effects of high safety, strong convenience, energy saving and environmental protection, intelligent control, waterproof and moisture-proof, etc. It is suitable for lighting needs in humid environments such as kitchens, and improves the performance of lamps and user experience.

[0021] See also Figure 2 The front stage of the selection switch SW1 is provided with an EMC circuit, which includes a common mode inductor LF2 connected in series in the mains input circuit, an X capacitor CX2 connected in parallel in the mains input circuit, and a varistor MOV1. The varistor MOV1 is connected between the live wire L and the neutral wire N. The varistor is a voltage-limiting protection device. By utilizing the nonlinear characteristics of the varistor, when an overvoltage appears between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby realizing the protection of the subsequent circuit.

[0022] EMC circuits can effectively suppress electromagnetic interference, ensure the normal operation of equipment in an electromagnetic environment, and improve the electromagnetic compatibility of equipment.

[0023] The common mode inductor LF2, the X capacitor CX2 and the varistor MOV1 can provide protection against voltage interference and overvoltage in the AC input circuit, protecting the equipment from external electromagnetic interference and sudden voltage.

[0024] Through the design of EMC circuits, electromagnetic noise and interference in the circuit can be reduced, and the stability and reliability of the circuit can be improved.

[0025] In the AC input circuit, a fuse F1 is connected in series to the live wire L. When a fault occurs in the subsequent circuit and causes a large current, the fuse F1 melts to provide protection.

[0026] Specifically, the common end of the selection switch SW1 is connected to the first output end of the common-mode inductor LF2, the first moving contact end of the selection switch SW1 is connected to the first input end of the first rectifier and filter circuit, the second input end of the first rectifier and filter circuit is connected to the second output end of the common-mode inductor LF2, the second moving contact end of the selection switch SW1 is connected to the first input end of the second rectifier and filter circuit, and the second input end of the second rectifier and filter circuit is connected to the second output end of the common-mode inductor LF2.

[0027] The relay includes a switch S1 and a coil L1 for attracting the switch S1, and the two ends of the switch S1 are respectively connected to the first moving contact end and the second moving contact end of the selection switch; the control circuit includes an NPN-type transistor Q13 and a control module U1, the first end of the coil L1 is grounded through a capacitor C13, the second end of the coil L1 is connected to the collector of the transistor Q13, the emitter of the transistor Q13 is grounded, and the base of the transistor Q13 is connected to the control module U1.

[0028] Through the above measures, when the selection switch SW1 is switched to the second moving contact end, due to the function of the relay, when the control circuit controls the switch S1 to be attracted, the current can still be directed to the first rectifier and filter circuit to make the lamp illuminate normally.

[0029] After the selection switch SW1 is switched to the second moving contact end, the second rectifier filter circuit receives power and first performs rectification. The diode D2, the diode D10, the diode D11 and the diode D12 form a full-wave bridge rectifier circuit, which is defined as the rectifier module BD2. Figure 2 and Figure 3 In the process, an auxiliary power supply is formed through the subsequent circuit to supply power to the infrared sensing circuit and the control circuit.

[0030] See also Figure 3 , an infrared sensing circuit is provided, which feeds back the signal to the control module U1 in the control circuit after detection, and the control module U1 then controls the relay of the subsequent stage to produce corresponding action.

[0031] See also Figure 4The first rectifier and filter circuit includes a rectifier bridge module BR1 composed of a diode D17, a diode D18, a diode D19 and a diode D20. A filter capacitor EC6 is provided at the rear stage of the rectifier bridge module BR1. After the output power is output, it is DC to DC boosted by a boost circuit and finally outputted by an output interface to light up the light board.

[0032] The LED lighting fixture with infrared sensing provided by the utility model has the following advantages:

[0033] The use of infrared gesture control lamps without human contact effectively avoids the risk of leakage injury caused by hands or humid environment, and improves the safety of use. Users do not need to touch the switch directly, but can control the switch of the lamps through gestures, which is more convenient to operate and is especially suitable for humid environments such as kitchens. At the same time, it avoids energy waste when no one is around for a long time, achieves energy saving and environmental protection, and reduces the impact on the environment. It also makes the lamps more waterproof and moisture-proof, prolongs the service life and improves stability. Overall, infrared gesture sensing control switch lighting has the advantages of safety, convenience, energy saving, intelligence and durability. It is suitable for various environments that require waterproof and moisture-proof and easy operation, providing users with a better use experience.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED lighting fixture with infrared sensing, comprising a first rectifying and filtering circuit, a boosting circuit is arranged at the rear stage of the first rectifying and filtering circuit, and an output interface for supplying power to a lamp board is connected at the rear stage of the boosting circuit, characterized in that: A second rectifier and filter circuit and a selection switch for directly supplying power to the first rectifier and filter circuit or the second rectifier and filter circuit are also provided. An auxiliary power supply, an infrared sensing circuit and a control circuit are provided at the rear stage of the second rectifier and filter circuit. The auxiliary power supply is used to supply power to the infrared sensing circuit and the control circuit. The control circuit is connected to a relay controlled by it, and the switch end of the relay is connected in parallel with the moving contact end of the selection switch.

2. The LED lighting fixture with infrared sensing according to claim 1, characterized in that: The front stage of the selection switch is provided with an EMC circuit, which includes a common mode inductor LF2 connected in series in the mains input circuit and an X capacitor CX2 and a varistor MOV1 connected in parallel in the mains input circuit.

3. The LED lighting fixture with infrared sensing according to claim 2, characterized in that: The common end of the selection switch is connected to the first output end of the common-mode inductor LF2, the first moving contact end of the selection switch is connected to the first input end of the first rectifier and filter circuit, the second input end of the first rectifier and filter circuit is connected to the second output end of the common-mode inductor LF2, the second moving contact end of the selection switch is connected to the first input end of the second rectifier and filter circuit, and the second input end of the second rectifier and filter circuit is connected to the second output end of the common-mode inductor LF2.

4. The LED lighting fixture with infrared sensing according to claim 3, characterized in that: The relay includes a switch S1 and a coil L1 for attracting the switch S1, and the two ends of the switch S1 are respectively connected to the first moving contact end and the second moving contact end of the selection switch; the control circuit includes an NPN-type transistor Q13 and a control module U1, the first end of the coil L1 is grounded through a capacitor C13, the second end of the coil L1 is connected to the collector of the transistor Q13, the emitter of the transistor Q13 is grounded, and the base of the transistor Q13 is connected to the control module U1.

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