A new type of heat dissipation lamp

Abstract

The utility model relates to the technical field of lamps, and discloses a new type of heat dissipation lamp, which includes: a control circuit board, a control circuit, a lamp board, a heat dissipation area and LED lamp beads, the control circuit is connected to the control circuit board, the power input end of the control circuit is externally connected to an external power supply, the power output end of the control circuit is electrically connected to the power input end of the lamp board, a plurality of LED lamp beads are distributed on the upper surface of the lamp board, and the LED lamp beads are electrically connected to the lamp board, and a heat dissipation area is provided on the lower surface of the lamp board, and the heat dissipation area is used to dissipate heat from the lamp board. Through the rational design of lamp technology, the control circuit board, the control circuit, the lamp board, the heat dissipation area and the LED lamp beads are used, which can effectively reduce the cost of lamps, deliver them to customers in a timely manner, improve heat dissipation and increase the life of lamps, and improve space utilization, etc.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a novel heat dissipation lamp. Background Art

[0002] In life, generally speaking, there are many switch cabinets in the substation, and using natural light to illuminate the inside of the switch cabinet cannot meet the actual use needs. Since natural light is not enough to illuminate the secondary room of each switch cabinet, especially after installing various instruments in the secondary room, it will seriously affect the irradiation of natural light. In addition, the secondary room is mainly used for the arrangement of secondary wiring terminals, and the terminal number font is relatively small. If it is not illuminated, the line number on the line mark cannot be seen clearly, so auxiliary lighting is needed for lighting compensation. However, the existing lighting products use the Microchip buck-type LED constant current driver chip HV9921 solution. HV9921 is an imported brand, expensive, and unstable procurement delivery time, which greatly affects the use of lighting products. In addition, the circuit board in the existing solution is difficult to layout due to limited space and high cost.

[0003] Therefore, in view of the above problems, the existing lighting technology needs to be further improved. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems of high cost, poor heat dissipation, short life of lamps, limited space utilization and difficult layout of existing lamps. Through the rational design of lamp technology, the use of control circuit boards, control circuits, lamp boards, heat dissipation areas and LED lamp beads can effectively reduce the cost of lamps, deliver them to customers in a timely manner, improve heat dissipation and increase the life of lamps, and improve space utilization.

[0005] The technical solution of the utility model is as follows:

[0006] A new type of heat dissipation lamp, the heat dissipation lamp comprises: a control circuit board, a control circuit, a lamp board, a heat dissipation area and LED lamp beads, the control circuit board is connected to the control circuit, the power input end of the control circuit is externally connected to an external power supply, the power output end of the control circuit is electrically connected to the power input end of the lamp board, a plurality of LED lamp beads are distributed on the upper surface of the lamp board, and the LED lamp beads are electrically connected to the lamp board, and the lower surface of the light board is provided with a heat dissipation area, and the heat dissipation area is used to dissipate the heat of the lamp board.

[0007] Furthermore, the control circuit includes a power input circuit, a filter circuit, an LED drive circuit and a power output circuit, the power input end of the power input circuit is connected to an external power supply, the power output end of the power input circuit is connected to the power input end of the filter circuit, the power output end of the filter circuit is connected to the power input end of the LED drive circuit, the power output end of the LED drive circuit is connected to the power input end of the power output circuit, and the power output end of the power output circuit is connected to the power input end of the lamp board.

[0008] Furthermore, the power input circuit includes a power interface, a fuse and a varistor, the live wire of the power interface is connected to one end of the fuse, the other end of the fuse is connected to one end of the varistor and the power input end of the filter circuit, and the other end of the varistor is connected to the neutral wire of the power interface.

[0009] Furthermore, the filtering circuit includes a resistor, a capacitor and an inductor, the power output end of the power input circuit is connected in parallel to one end of the resistor, one end of the inductor and one end of the capacitor, the other end of the resistor and the other end of the inductor are connected to one end of the power input end of the LED driving circuit, and the other end of the capacitor is connected to the other end of the power input end of the LED driving circuit and the other end of the power output end of the power input circuit.

[0010] Furthermore, the LED driving circuit includes an LED driving chip, the power output end of the filter circuit is connected to the power input end of the LED driving chip, and the power output end of the LED driving chip is connected to the power input end of the power output circuit.

[0011] Furthermore, the LED driver chip is a LED constant current driver chip.

[0012] Furthermore, the LED driving circuit also includes a resistor and an adjustable resistor, the overvoltage protection terminal (OVP) of the LED driving circuit is connected to one end of the resistor, and the other end of the resistor is grounded, the current sampling terminal of the LED driving circuit is connected to one end of the adjustable resistor, and the other end of the adjustable resistor is grounded.

[0013] Furthermore, the power output circuit includes a varistor, a first capacitor, a second capacitor, a resistor and an inductor, one end of the power output end of the LED driving circuit is connected in parallel to one end of the varistor, one end of the first capacitor, one end of the second capacitor, one end of the resistor and one end of the power input end of the lamp board, the other end of the power output end of the LED driving circuit is connected to one end of the inductor, the other end of the inductor is connected in parallel to the other end of the second capacitor, the other end of the resistor and the other end of the power input end of the lamp board, and the other end of the varistor and the other end of the first capacitor are grounded.

[0014] Furthermore, the LED lamp beads are connected in series on the lamp board.

[0015] Furthermore, the heat dissipation area selects a plurality of heat dissipation through holes.

[0016] Furthermore, the light board is a FR-4 printed circuit board.

[0017] Furthermore, the heat dissipation through holes of the heat dissipation zone are selected to be square, circular, elliptical or the like.

[0018] Furthermore, the control circuit board is also connected to an input interface.

[0019] Beneficial Effects

[0020] This utility model uses a control circuit board, control circuit, lamp board, heat dissipation area and LED lamp beads through a rational design of lamp technology, which can effectively reduce the cost of lamps, deliver them to customers in a timely manner, improve heat dissipation and increase lamp life, and improve space utilization. The use of a filter circuit can achieve surge resistance and avoid damage to the hardware circuit; the use of a heat dissipation area with heat dissipation holes can dissipate the heat of the lamp beads in time and reduce the temperature of the lamp beads; as the domestic substitution of semiconductors is an inevitable trend, this product uses the BP2863MJ chip solution of the domestic brand Jingfeng Mingyuan as a replacement. The BP2863MJ chip uses a new packaging technology to achieve monolithic integration of rectifier bridges, freewheeling diodes, etc., effectively solving the problems of difficult layout of circuit boards due to limited space and high finished product costs; the use of FR-4 printed circuit boards and heat dissipation areas can achieve low-cost and good heat dissipation effects; for this product, it is to control The overall components on the circuit board are staggered with the light board, which can effectively avoid the heat of the two products from being superimposed on each other and aggravating the temperature rise of the products. Heat dissipation vias (through holes) are added around the LED lamps, and windows are opened on the bottom of the light board to increase the heat dissipation area and reduce the temperature rise of the light board. After testing experiments, the maximum absolute temperature of the light board will be reduced from 94.6℃ to 72.9℃ (72.9℃ for this product), and the temperature rise relative to the external environment will be reduced from 69.3℃ to 47.3℃ (47.3℃ for this product), and the temperature rise relative to the shell cavity will be reduced from 60.8℃ to 42.8℃ (42.8℃ for this product). BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a novel heat dissipation lamp of the utility model.

[0022] Figure 2 It is a structural schematic diagram of a heat dissipation area of ​​a novel heat dissipation lamp of the utility model.

[0023] Figure 3 The utility model is a circuit diagram of a novel heat dissipation lamp.

[0024] Figure numbers: 01, control circuit board; 02, light board; 03, LED lamp beads; 04, input interface; 05, heat dissipation area. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 3 As shown, the utility model provides a new type of heat dissipation lamp, which includes: a control circuit board 01, a control circuit, a lamp board 02, a heat dissipation area 05 and LED lamp beads 03. The control circuit board 01 is connected to the control circuit, the power input end of the control circuit is externally connected to an external power supply, the power output end of the control circuit is electrically connected to the power input end of the lamp board 02, a plurality of LED lamp beads 03 are distributed on the upper surface of the lamp board 02, and the LED lamp beads 03 are electrically connected to the lamp board 02, and the heat dissipation area 05 is provided on the lower surface of the lamp board 02, and the heat dissipation area 05 is used to dissipate heat from the lamp board 02;

[0027] Among them, the LED lamp beads 03 are connected in series on the lamp board 02, and 10 LED lamp beads can be selected; the heat dissipation area 05 is selected in a square shape and is provided with a plurality of heat dissipation through holes, and the heat dissipation through holes are square and arranged in a matrix; the lamp board 02 is selected in a FR-4 printed circuit board, and the heat dissipation area 05 is selected to be integrally formed on the lower surface of the lamp board 02, that is: the heat dissipation area is designed by opening a window on the FR-4 printed circuit board; the control circuit board 01 is also connected to an input interface 04;

[0028] The control circuit includes a power input circuit, a filter circuit, an LED driving circuit and a power output circuit. The power input end of the power input circuit is connected to an external power supply, the power output end of the power input circuit is connected to the power input end of the filter circuit, the power output end of the filter circuit is connected to the power input end of the LED driving circuit, the power output end of the LED driving circuit is connected to the power input end of the power output circuit, and the power output end of the power output circuit is connected to the power input end of the light board 02;

[0029] Among them, the power input circuit includes a power interface CON1, a fuse FUSE1, a fuse FUSE2 and a varistor RV1, the filter circuit includes a resistor R1, a capacitor C1 and an inductor L1, the LED drive circuit includes an LED drive chip U1, a resistor R2 and an adjustable resistor RS1, and the power output circuit includes a varistor RV2, a first capacitor EC1, a second capacitor EC2, a resistor R3 and an inductor L2; in addition: the light board circuit includes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9 and LED10;

[0030] The live wire of the power interface CON1 is connected to one end of the fuse FUSE2, the other end of the fuse FUSE2 is connected to one end of the varistor RV1 and one end of the resistor R1 of the filter circuit, and the other end of the varistor RV1 is connected to the neutral wire of the power interface CON1 through the fuse FUSE1;

[0031] The other end of the fuse FUSE2 of the power input circuit is connected in parallel to one end of the resistor R1, one end of the inductor L1 and one end of the capacitor C1, the other end of the resistor R1 and the other end of the inductor L1 are commonly connected to the LED driver chip U1 "ACIN1" terminal of the LED driver circuit, and the other end of the capacitor C1 is commonly connected to the LED driver chip U1 "ACIN2" terminal of the LED driver circuit and the other end of the varistor RV1 of the power input circuit;

[0032] Among them, the LED driver chip U1 selects an LED constant current driver chip, the LED driver chip U1 "GND" terminal is grounded, the LED driver chip U1 "OVP" terminal is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, the LED driver chip U1 "CS" terminal is connected to one end of the adjustable resistor RS1, the other end of the adjustable resistor RS1 is grounded, the LED driver chip U1 "VIN" terminal is connected in parallel to one end of the varistor RV2, one end of the first capacitor EC1 (positive electrode), one end of the second capacitor EC2 (positive electrode), one end of the resistor R3 and the positive electrode of LED10 of the lamp board 02, and the negative electrode of LED10 is connected to LED9 The positive electrode of LED9 is connected to the positive electrode of LED8, the negative electrode of LED8 is connected to the positive electrode of LED7, the negative electrode of LED7 is connected to the positive electrode of LED6, the negative electrode of LED6 is connected to the positive electrode of LED5, the negative electrode of LED5 is connected to the positive electrode of LED4, the negative electrode of LED4 is connected to the positive electrode of LED3, the negative electrode of LED3 is connected to the positive electrode of LED2, the negative electrode of LED2 is connected to the positive electrode of LED1, the negative electrode of LED1 is connected to the other end of the resistor R3, the other end of the second capacitor EC2 and the other end of the inductor L2, one end of the inductor L2 is connected to the "DRAIN" terminal of the LED driver chip U1, and the other end of the varistor RV2 and the other end of the first capacitor EC1 are grounded.

[0033] The specific implementation principle of the utility model patent is as follows: the various components of the control circuit are welded on the control circuit board to make them electrically connected, and then the light board is installed on the control circuit board. There is a gap between the light board and the control circuit board, and the components are located in this gap. When the lamp is powered on and lighting starts, the heat of the LED lamp beads will be dissipated from the heat dissipation holes in the heat dissipation area.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of heat dissipation lamp, characterized in that: The heat dissipation lamp includes: a control circuit board, a control circuit, a lamp board, a heat dissipation area and LED lamp beads. The control circuit board is connected to the control circuit, the power input end of the control circuit is externally connected to an external power supply, the power output end of the control circuit is electrically connected to the power input end of the lamp board, a plurality of LED lamp beads are distributed on the upper surface of the lamp board, and the LED lamp beads are electrically connected to the lamp board, and the lower surface of the light board is provided with a heat dissipation area, and the heat dissipation area is used to dissipate the heat of the lamp board.

2. A novel heat dissipation lamp according to claim 1, characterized in that: The control circuit includes a power input circuit, a filter circuit, an LED drive circuit and a power output circuit. The power input end of the power input circuit is connected to an external power supply, the power output end of the power input circuit is connected to the power input end of the filter circuit, the power output end of the filter circuit is connected to the power input end of the LED drive circuit, the power output end of the LED drive circuit is connected to the power input end of the power output circuit, and the power output end of the power output circuit is connected to the power input end of the lamp board.

3. A novel heat dissipation lamp according to claim 2, characterized in that: The power input circuit includes a power interface, a fuse and a varistor, the live wire of the power interface is connected to one end of the fuse, the other end of the fuse is connected to one end of the varistor and the power input end of the filter circuit, and the other end of the varistor is connected to the neutral wire of the power interface.

4. A novel heat dissipation lamp according to claim 2, characterized in that: The filter circuit includes a resistor, a capacitor and an inductor. The power output end of the power input circuit is connected in parallel to one end of the resistor, one end of the inductor and one end of the capacitor. The other ends of the resistor and the inductor are commonly connected to one end of the power input end of the LED driving circuit. The other end of the capacitor is commonly connected to the other end of the power input end of the LED driving circuit and the other end of the power output end of the power input circuit.

5. A novel heat dissipation lamp according to claim 2, characterized in that: The LED driving circuit comprises an LED driving chip, the power output end of the filter circuit is connected to the power input end of the LED driving chip, and the power output end of the LED driving chip is connected to the power input end of the power output circuit.

6. A novel heat dissipation lamp according to claim 5, characterized in that: The LED driving chip is a LED constant current driving chip.

7. A novel heat dissipation lamp according to claim 2, characterized in that: The power output circuit includes a varistor, a first capacitor, a second capacitor, a resistor and an inductor. One end of the power output end of the LED driving circuit is connected in parallel to one end of the varistor, one end of the first capacitor, one end of the second capacitor, one end of the resistor and one end of the power input end of the lamp board. The other end of the power output end of the LED driving circuit is connected to one end of the inductor. The other end of the inductor is connected in parallel to the other end of the second capacitor, the other end of the resistor and the other end of the power input end of the lamp board. The other end of the varistor and the other end of the first capacitor are grounded.

8. The novel heat dissipation lamp according to claim 1, characterized in that: The LED lamp beads are connected in series on the lamp board.

9. The novel heat dissipation lamp according to claim 1, characterized in that: The heat dissipation area selects a plurality of heat dissipation through holes.

10. A novel heat dissipation lamp according to claim 9, characterized in that: The lamp board is made of FR-4 printed circuit board.

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