CN2819037Y - Acousto-optic controlled cold cathode-ray tube - Google Patents

Abstract

The utility model discloses a novel acousto-optic control cold cathode tube lamp, which comprises a lampshade, a lamp holder and a bottom plate. A circuit board is provided, and the circuit board is connected to the cold cathode tube through wires, and the circuit board includes a power supply circuit, an acousto-optic control circuit and a light-emitting circuit. The utility model can also realize single sound control or single light control. Because the cold-cathode tube is used as the light-emitting device, the utility model has remarkable power-saving effect, long service life, simple structure, convenient use and high brightness, and is especially suitable for extensive use of building corridor lighting.

Description

Sound and light control cold cathode tube lamp

technical field

The utility model relates to a new generation of lighting fixtures, in particular to an acousto-optic control cold cathode tube lamp.

Background technique

The design of the acousto-optic control lighting circuit in the prior art can only use light bulbs, and cannot be equipped with energy-saving lamps, diode lamps or cold-cathode tube lights, and the life of the light bulb is short and consumes a lot of power, which is not conducive to saving electricity.

Contents of the invention

The purpose of the utility model is to provide an acousto-optic control cold-cathode tube lamp with novel design, simple structure, convenient use, good power saving effect and long service life in view of the deficiencies of the prior art.

The concrete technical scheme that realizes the utility model purpose is:

An acousto-optic control cold-cathode tube lamp, comprising a lampshade 1, a lamp holder 8, and a bottom plate 16, the lampshade 1 is clamped on the lamp holder 8, a cold-cathode tube 2 is fixed on the lamp holder 8 and arranged in the lampshade 1, and the lamp holder 8 is provided with a circuit board 10, and the bottom plate 16 is clamped on the bottom of the lamp holder 8.

The circuit board 10 includes a power supply circuit A, an acousto-optic control circuit B, and a light emitting circuit C, the specific form of which is:

Power supply circuit A: Resistor R13 and capacitor C7 are connected in parallel and then connected to a bridge rectifier composed of diodes D1, D2, D3 and D4, and capacitor C6 is connected in parallel between the positive and negative poles of the power supply;

Acousto-optic control circuit B: Thyristor T1 emitter e is connected to the negative pole of power circuit A, collector c is connected to light-emitting circuit C, base b is connected to resistor R8, and the other end of resistor R8 is connected to the 3rd and 4th feet of the integrated block CD in parallel, integrated Pins 1, 2, 5, and 6 connected in parallel to the block CD are connected to resistor R7, the negative pole of capacitor C2 and the positive pole of diode D5, the other end of resistor R7 and the positive pole of capacitor C2 are connected to the positive pole of the power supply, and the negative pole of diode D5 is connected to pin 11 of integrated CD Pin 12 of block CD is connected to resistor R4 and capacitor C4, the other end of resistor R4 is connected to the negative pole of the power supply, the other end of capacitor C4 is connected to pin 10 of integrated block CD, pin 13 of integrated block CD is connected to resistors R5 and R6, and the other end of resistor R5 is connected to The positive pole of the power supply, the other end of the resistor R6 is connected to the negative pole of the power supply, the capacitor C1 is connected in parallel between the positive and negative poles of the power supply, the resistor R3 is connected in parallel between the pins 8, 9 and 10 of the integrated block CD, and one end of the capacitor C3 is connected in parallel with the integrated block CD Pins 8 and 9, the other end is connected to resistor R2 and microphone HT, one end of capacitor C5 is connected to pin 10 of the integrated block CD, the other end is connected to the negative pole of the power supply, and the other end of the microphone HT is connected to the negative pole of the power supply;

Light-emitting circuit C: one end of the inductor H1 is connected to the positive pole of the power supply, the other end is connected in parallel with resistors R9 and R10, and then connected to the h pin of the primary end 1 of the inverter D, and the other end of the resistor R9 is connected to the base b of the triode T2 and the primary end 2 of the inverter D One end of the resistor R10, the other end of the resistor R10 is connected to the base b of the transistor T3, the other end of the primary end 2 of the inverter D, the collector c of the transistor T2 is connected to one end of the primary end 1 of the inverter D, and the collector c of the triode T3 is connected to the inverter The other end of the primary end 1 of D, the capacitor C8 is connected in parallel to both ends of the primary end 1 of the inverter D, one end of the resistors R12 and R11 are respectively connected to the transistor T2, the base of the transistor T3 b, and the other end is connected to the collector of the thyristor T1 c , Transistor T2, T3 emitter e is connected to thyristor T1 collector c, cold cathode tube CCFL, capacitor C9 are connected in series and connected to both ends of the inverter D sub-extreme.

The cold cathode tube 2 is spiral.

The utility model adopts a cold cathode tube as a light-emitting device, has remarkable power-saving effect, long service life, simple structure, convenient use and high brightness, and is especially suitable for extensive use in corridors of buildings.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the utility model circuit diagram

Detailed ways

Referring to Fig. 1, the utility model includes a lampshade 1, a lamp holder 8, and a bottom plate 16. The lampshade 1 is clamped on the lamp holder 8 through a hook 6, and a cold cathode tube 2 is fixed on the lamp holder 8 and is arranged in the lamp shade 1. A circuit board 10 is arranged in the seat 8 and fixed by the hook 4. The circuit board 10 is connected to the cold cathode tube 2 through a wire 14. The microphone 9 and the photoresistor 13 on the circuit board 10 in the lamp holder 8 pass through the holes on the lamp holder 8. 7, 12 receive the signal, the bottom plate 16 is fixed in the lamp holder 8 through the bump 15; the lamp holder 8 is fixedly connected with the installation object through the fixing hole 3 with screws.

Referring to Fig. 2, the circuit board 10 of the present utility model includes a power supply circuit A, an acousto-optic control circuit B, and a light emitting circuit C. When power is applied, the resistor R13 and the capacitor C7 discharge, and after the capacitor C7 is stepped down, the diodes D1, D2, D3, The bridge rectifier circuit composed of D4 is filtered by capacitor C6 to provide power to the whole circuit; when the microphone HT gets sound, it drives capacitor C3, pins 8 and 9 of integrated block CD are low potential, pin 10 is high potential and trigger capacitor C4 to make pin 12 The same is high potential, when there is no light, the resistance of photoresistor R6 is large, the current flows to pin 13 through resistor R5, pin 13 is high potential, and pin 11 is low potential at this time, and capacitor C2 discharges to pin 11 through diode D5 , the 1, 2, 5, and 6 feet of the integrated block CD in parallel are at low potential, so that the parallel 3 and 4 feet are at high potential, and the light-emitting circuit C is opened through the thyristor T1; , R10 makes the base b of the triode T2 and T3 energized, the collector c is charged, and the emitter e is discharged, and the capacitor C8 provides a forward bias, so that the primary inductance and capacitor of the inverter D form a resonance to generate a high-frequency positive Strong wave, so that the secondary output of the inverter D is high voltage, which is used to light the cold cathode tube CCFL. Capacitor C9 can act as a current limiter to reduce the voltage at both ends after the cold cathode tube CCFL is started. Resistors R11 and R12 are connected to the triode The bases b of T2 and T3 play the role of overvoltage protection. After the capacitor C2 is charged for a certain period of time, the 3rd and 4th feet of the integrated block CD in parallel are at low potential, the base b of the thyristor T1 has no electricity, and the cold cathode tube CCFL is turned off.

Adopt CD4011 integrated block in the utility model circuit.

The utility model cancels the photosensitive resistor R6, and can realize single sound control.

The utility model cancels the connections of the 12 and 13 pins of the resistors R2, R3, R4, C3, C4, the microphone HT, and the integrated block CD, so that single light control can be realized.

Claims (3)

1, a kind of acousto-optic control cold cathode lamp, comprise lampshade (1), lamp socket (8), base plate (16), it is characterized in that lampshade (1) is installed on the lamp socket (8), be fixed with cold-cathode tube (2) on the lamp socket (8) and be located in the lampshade (1), be provided with circuit board (10) in the lamp socket (8), base plate (16) is installed on lamp socket (8) bottom.

2, cold cathode lamp according to claim 1 is characterized in that described circuit board (10) comprises power circuit (A), acousto-optic control circuit (B), illuminating circuit (C), and concrete form is:

Power circuit (A): connect by diode D1, D2, D3, D4 after resistance R 13 and capacitor C 7 are in parallel and form bridge rectifier, between the power supply positive and negative electrode and connect capacitor C 6;

Acousto-optic control circuit (B): controllable silicon T1 emitter e connects power circuit (A) negative pole, colelctor electrode c sending and receiving optical circuits (C), base stage b connecting resistance R8,3 of resistance R 8 another termination integrated package CD parallel connections, 4 pin, 1 of integrated package CD parallel connection, 2,5,6 pin connecting resistance R7, the negative pole of capacitor C 2 and diode D5 positive pole, resistance R 7 other ends, the positive pole of capacitor C 2 connects positive source, diode D5 negative pole connects 11 pin of integrated package CD, the 12 pin connecting resistance R4 of integrated package CD, capacitor C 4, resistance R 4 another termination power cathodes, 10 pin of another termination integrated package CD of capacitor C 4, the 13 pin connecting resistance R5 of integrated package CD, R6, resistance R 5 another termination positive sources, resistance R 6 another termination power cathodes, capacitor C 1 just is being attempted by power supply, negative two interpolars, 8 of integrated package CD parallel connection, between 9 pin and 10 pin and connecting resistance R3,8 of capacitor C 3 one termination integrated package CD parallel connections, 9 pin, other end connecting resistance R2, microphone HT, 10 pin of capacitor C 5 one termination integrated package CD, another termination power cathode, another termination power cathode of microphone HT;

Illuminating circuit (C): inductance H1 one termination capacitor C6, positive source, the other end and connecting resistance R9, connect the h pin of inverter D primary side 1 behind the R10, resistance R 9 another termination triode T2 base stage b, one end of inverter D primary side 2, resistance R 10 another termination triode T3 base stage b, the other end of inverter D primary side 2, triode T2 colelctor electrode c connects an end of inverter D primary side 1, triode T3 colelctor electrode c connects the other end of inverter D primary side 1, capacitor C 8 is attempted by the two ends of inverter D primary side 1, resistance R 12, R11 one end meets triode T2 respectively, triode T3 base stage b, another termination triode T1 colelctor electrode c, triode T2, the T3 emitter e meets triode T1 colelctor electrode c, cold-cathode tube CCFL, be attempted by D extreme two ends of inverter after capacitor C 9 series connection.

3, acousto-optic control cold cathode lamp according to claim 1 is characterized in that described cold-cathode tube (2) is spirality.

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