CN201487647U - High Power LED Downlight - Google Patents

Abstract

The utility model relates to a high-powder LED down lamp, which comprises a lamp cup and a heat radiation casing arranged on the lamp cup. The high-powder LED down lamp is characterized in that the LED down lamp also comprises an aluminum base plate arranged at the bottom of the lamp cup, more than two light emitting diodes arranged on the aluminum base plate, a connecting terminal arranged on the heat radiation casing and a circuit board electrically connected with the connecting terminal; and a circuit for driving the light emitting diodes to emit light is arranged on the circuit board, and the connecting terminal is electrically connected with the aluminum base plate through a wire. The high-powder LED down lamp has the advantages of low electricity consumption, variety of color of light source, low production cost, esthetic appearance, and so on.

Description

High Power LED Downlight

technical field

The utility model relates to a high-power LED downlight.

Background technique

The existing common copper lamp comprises a lamp cup, an energy-saving lamp or a light bulb arranged in the lamp cup and a heat dissipation shell arranged outside the lamp cup. When in use, it is more wasteful of electricity, the color of the light source is relatively single, and the style is relatively monotonous.

Utility model content

The utility model overcomes the deficiencies of the prior art and provides a high-power LED downlight which saves electric energy, has rich and colorful light source colors and beautiful appearance.

In order to achieve the above purpose, the utility model is realized in the following way, which is a high-power LED downlight, which includes a lamp cup and a heat dissipation housing arranged on the lamp cup, and is characterized in that: it also includes an aluminum tube arranged at the bottom of the lamp cup The base plate and more than two light-emitting diodes arranged on the aluminum base plate; it also includes the connection terminals arranged on the heat dissipation shell; it also includes a circuit board electrically connected to the connection terminals, and a circuit for driving the light-emitting diodes to emit light is arranged on the circuit board , the terminals are electrically connected to the aluminum substrate through wires.

The described circuit includes a DC power supply for providing DC operating voltage for the following circuits, a feedback circuit, an output filter circuit and a signal that receives the output signal of the feedback circuit and generates the required driving signal for the light-emitting diode and inputs the signal to the output filter circuit generator.

The feedback circuit includes a first resistor, a fourth capacitor and a fifth diode, the first resistor and the fourth capacitor are connected in series with the fifth diode, and one end of the series is connected to the output terminal of the DC power supply; the output The filter circuit includes a second inductance, a seventh diode, a seventh capacitor, an eighth capacitor and a transformer. The seventh capacitor, the second inductance and the eighth capacitor form a Π-shaped filter, and the first stage of the transformer passes through the seventh and second capacitors. The pole tube is connected to the input terminal of the Π-shaped filter, and the output terminal of the Π-shaped filter is connected to the light-emitting diode; the signal generator includes a fifth capacitor, a sixth capacitor, a Zener diode, a second resistor, and a sixth diode And the oscillating integrated block, the Zener diode is connected in series with the sixth capacitor and then connected in parallel with the fifth capacitor, one end of the parallel circuit is connected to the primary end of the transformer through the second resistor and the sixth diode, and this end is also connected to the DC power supply The VDD terminal, the other end is connected to the other end of the primary and the 4 pins of the oscillating integrated block, the series point of the series circuit is connected to the 1 pin of the oscillating integrated block, the 2 pins of the oscillating integrated block are connected to the VDD end of the DC power supply, and the 3 pins are connected to the transformer 1st One end of the secondary, the second secondary is also connected in parallel with the feedback circuit.

Compared with the prior art, the utility model has the advantages of saving electric energy, rich and colorful light sources, low production cost and beautiful appearance.

Description of drawings

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

Fig. 2 is the circuit principle diagram of the circuit of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

As shown in Figures 1 and 2, it is a high-power LED downlight, including a lamp cup 8 and a heat dissipation housing 4 arranged on the lamp cup. Substrate 9 and more than two light-emitting diodes 3 arranged on the aluminum substrate; also include connecting terminals located on the heat dissipation housing; The light-emitting circuit, the connecting terminal and the aluminum substrate are electrically connected through the wire 2; Outer ring 6 outside the inner ring. During installation, the aluminum base plate 9, the lamp cup 8 and the heat dissipation housing 4 are joined together with heat-conducting silicone grease, which improves the heat dissipation efficiency and reduces the production cost. When in use, the light-emitting diode consumes less power, saves power, and can change the color of light.

In this embodiment, the above-mentioned circuit includes a DC power supply 11 that provides a DC operating voltage for the following circuits, a feedback circuit 12, an output filter circuit 14 and receives the output signal of the feedback circuit and generates the required drive signal for the light-emitting diode 3. The signal is input to the signal generator 13 of the output filter circuit. The feedback circuit 12 includes a first resistor R1, a fourth capacitor C4 and a fifth diode D5, the first resistor R1 and the fourth capacitor C4 are connected in parallel and then connected in series with the fifth diode D5, and one end of the series is connected to the output end of the DC power supply ; The output filter circuit 13 includes the second inductor L2, the seventh diode D7, the seventh capacitor C7, the eighth capacitor C8 and the transformer BT, the seventh capacitor C7, the second inductor L2 and the eighth capacitor C8 constitute ∏ shaped filter, the first secondary of the transformer is connected to the input terminal of the Π shaped filter through the seventh diode D7, and the output terminal of the Π shaped filter is connected to the light-emitting diode; the signal generator 12 includes the fifth capacitor C5, The sixth capacitor C6, the Zener diode ZW, the second resistor R2, the sixth diode D6 and the oscillation integrated block IC1, the Zener diode ZW is connected in series with the sixth capacitor C6 and then connected in parallel with the fifth capacitor C5, and the circuit after parallel connection One end is connected to the primary end of the transformer through the second resistor R2 and the sixth diode D6, this end is also connected to the VDD end of the DC power supply, and the other end is connected to the other end of the primary end and pin 4 of the oscillating integrated block IC1, the series connection of the series circuit Connect the pin 1 of the oscillating integrated block IC1, the 2 pins of the oscillating integrated block to the VDD terminal of the DC power supply, and the 3 pins to one end of the second secondary of the transformer, and the second secondary is also connected in parallel with the feedback circuit.

Claims (3)

1. high-power LED tube light comprises Lamp cup and is located at radiating shell on the Lamp cup, it is characterized in that: also comprise the aluminium base (9) that is located at Lamp cup (8) bottom and be located at the light emitting diode more than two (3) on the aluminium base; Also comprise the binding post (1) that is located on the radiating shell (4); Also comprise the wiring board that is electrically connected with binding post, be provided with the circuit that drives lumination of light emitting diode in the circuit board, terminals (1) are electrically connected by lead (2) with aluminium base (9).

2. high-power LED tube light according to claim 1, it is characterized in that: described circuit is included as following circuit provides the dc source of direct-current working volts (11), feedback circuit (12), the output signal of output filter circuit (14) and reception feedback circuit also produces the signal generator (13) that the required driving signal of light emitting diode (3) also is input to this signal output filter circuit.

3. high-power LED tube light according to claim 2, it is characterized in that: described feedback circuit (12) comprises first resistance (R1), the 4th electric capacity (C4) and the 5th diode (D5), first resistance (R1) is connected with the 5th diode (D5) with the 4th electric capacity (C4) back in parallel, the output of series connection back one termination dc source; Described output filter circuit (13) comprises second inductance (L2), the 7th diode (D7), the 7th electric capacity (C7), the 8th electric capacity (C8) and transformer (BT), the 7th electric capacity (C7), second inductance (L2) and the 8th electric capacity (C8) constitute the ∏ mode filter, first level of transformer connects the input of ∏ mode filter, the output sending and receiving optical diode of ∏ mode filter by the 7th diode (D7); Described signal generator (12) comprises the 5th electric capacity (C5), the 6th electric capacity (C6), Zener diode (ZW), second resistance (R2), the 6th diode (D6) and vibration integrated package (IC1), it is in parallel with the 5th electric capacity (C5) again that Zener diode (ZW) is connected with the 6th electric capacity (C6), circuit one end after the parallel connection connects an elementary end of transformer by second resistance (R2) and the 6th diode (D6), this end also connects the vdd terminal of dc source, 4 pin of the other end that another termination is elementary and vibration integrated package (IC1), the series connection point of series circuit connects 1 pin of vibration integrated package (IC1), 2 pin of vibration integrated package connect the vdd terminal of dc source, its 3 pin connects an end of transformer second subprime, and second subprime is also in parallel with feedback circuit.

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