CN203167362U - LED bulb lamp applied to sound/light control switch - Google Patents

Abstract

The utility model relates to an LED bulb lamp applied to a sound/light control switch. A control circuit is additionally arranged before an AC/DC constant current driving power supply of the LED bulb lamp, wherein the control circuit is composed of a fuse, a metal film capacitor (C=0.47muF), a bleeder resistor (R=512K), a rectifier bridge and a relay (DC24V), the metal film capacitor and the rectifier bridge form a resistance-capacitance DC voltage reducing circuit so as to drive the low-voltage DC relay, and the function of the bleeder resistor is to release electric energy stored by a metal film rapidly when there is no operation power supply. The circuit provided by the utility model can enable the sound/light control switch, which is not special for LED lamps, to switch off completely with no current flowing through when the sound/light control switch stays at an off state with small current flowing through.

Description

A kind of LED bulb lamp suitable for sound and light control switch

technical field

The utility model relates to a light bulb, in particular to an LED bulb suitable for an acousto-optic control switch.

Background technique

The existing acousto-optic control LED bulb lamps have the following methods, one is to change the internal circuit of the common acousto-optic control switch, so that the acousto-optic control switch can completely control the on and off of the LED light. The other is to install the sound and light control delay switch circuit into the lamp holder of the LED bulb lamp to realize the delay switch function. There are several schemes to realize the combination of sound and light control switch and LED bulb lamp:

1. Replace the sound and light control switch with a new one, and change the internal control part of the sound and light control so that it can completely disconnect the AC power when it is disconnected.

2. Install an acousto-optic control delay circuit for LED in the lamp holder to replace the previous ordinary acousto-optic control switch to control the LED bulb lamp.

3. Do not modify the circuit, directly use the LED light on the ordinary acousto-optic switch, so that the LED can be switched between half-brightness and full-brightness.

Utility model content

The technical problem to be solved by the utility model is to provide an LED bulb lamp suitable for the sound and light control switch, and install a fuse, a metal film capacitor, and a drain before the AC/DC constant current drive power supply of the LED bulb lamp. Discharge resistor, rectifier bridge, relay composed of control circuit, this circuit can make the sound and light control switch (non-LED lamp special sound control switch) in the off state (that is, small current flow) to achieve complete disconnection (no current flow Pass).

The technical solution of the utility model to solve the above-mentioned technical problems is as follows: an LED bulb suitable for an acousto-optic control switch, including an AC/DC constant current drive power supply, a metal film capacitor (C=0.47μF), a discharge resistor (R =512KΩ), rectifier bridge, relay (DC24V), the rectifier bridge is composed of diode D1, diode D2, diode D3, diode D4, the cathode of the diode D1 is connected with the cathode of the diode D2 to form the first node, the The cathode of the diode D3 is connected to the anode of the diode D2 to form a second node, the anode of the diode D4 is connected to the anode of the diode D3 to form a third node, and the cathode of the diode D4 is connected to the anode of the diode D1 to form a fourth node. node; the metal film capacitor is connected in parallel with the discharge resistor, and a node formed after the metal film capacitor and the discharge resistor are connected in parallel is connected to the fourth node of the rectifier bridge, and the second node of the rectifier bridge point is connected to the negative input port of the AC/DC constant current drive power supply, the first node of the rectifier bridge is grounded through the coil of the relay, the third node of the rectifier bridge is grounded, the metal film capacitor and the discharge resistor The other node formed after parallel connection is connected to the positive input port of the AC/DC constant current drive power supply through the contacts of the relay. A fuse is provided between another node formed by the parallel connection of the metal film capacitor and the bleeder resistor to the contact of the relay. The metal film capacitor and the rectifier bridge form a resistance-capacitance DC step-down circuit to drive a low-voltage DC relay. The function of the bleeder resistor is to quickly release the electric energy stored in the metal film when there is no working power supply.

For the sound and light control switch used in the corridor, when the switch is in the off state, there is still a small current flowing to the lamp holder. Because tungsten filament lamps or incandescent lamps cannot be lit when a small current flows, and LED lamps can still work with AC/DC constant current drive when a small current flows, but the brightness will be lower. Therefore, a kind of LED bulb lamp suitable for acousto-optic control switch of the utility model is added a control device composed of a resistance-capacitance step-down circuit and a relay before the LED constant current drive. When the acousto-optic control switch is in the off state, that is, the flowing current is small, after the resistance-capacitance step-down, the current flowing through the relay is very small and cannot reach its rated current, the relay is in the off state, thereby cutting off the alternating current The live wire in the middle, so as to achieve the effect of completely turning off the LED light; when the sound-light control switch is in the on state, the current flowing through the control device will also become larger, the coil of the relay will be closed, and the LED light will be completely lit .

The beneficial effect of the utility model is that the product of the utility model can be directly used in conjunction with the acousto-optic switch to realize the same control as that of a tungsten lamp or an incandescent lamp without replacing the acousto-optic control switch or lamp holder. As a result, the purpose of convenience and power saving can be achieved, and at the same time, the product of the utility model can be used as an LED bulb lamp for indoor long-term lighting.

Description of drawings

Fig. 1 is a structural schematic diagram of an LED bulb suitable for an acousto-optic control switch according to the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. AC/DC constant current drive power supply, 2. Metal film capacitor, 3. Discharge resistor, 4. Rectifier bridge, 5. Relay, 6. Fuse.

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figure 1, an LED bulb suitable for sound and light control switches includes an AC/DC constant current drive power supply 1, a metal film capacitor 2, a discharge resistor 3, a rectifier bridge 4, and a relay 5. The rectifier The bridge 4 is composed of a diode D1, a diode D2, a diode D3, and a diode D4. The cathode of the diode D1 is connected to the cathode of the diode D2 to form a first node, and the cathode of the diode D3 is connected to the anode of the diode D2 to form a second node. node, the anode of the diode D4 is connected to the anode of the diode D3 to form a third node, the cathode of the diode D4 is connected to the anode of the diode D1 to form a fourth node; the metal film capacitor 2 and the discharge resistor 3 In parallel, a node formed after the metal film capacitor 2 and the bleeder resistor 3 are connected in parallel is connected to the fourth node of the rectifier bridge 4, and the second node of the rectifier bridge 4 is connected to the AC/DC constant current drive The negative input port of the power supply 1 is connected, the first node of the rectifier bridge 4 is grounded through the coil of the relay 5, the third node of the rectifier bridge 4 is grounded, and the metal film capacitor 2 is connected in parallel with the bleeder resistor 3 The other formed node is connected to the positive input port of the AC/DC constant current drive power supply 1 through the contact of the relay 5 . A fuse 6 is provided between another node formed after the metal film capacitor 2 is connected in parallel with the bleeder resistor 3 and the contact connected to the relay 5; the capacitance of the metal film capacitor 2 is 0.47 μF, and the The resistance value of the bleeder resistor is 512KΩ.

During use, connect one end of the fuse 6 to the live line L of the mains, and connect the second node of the rectifier bridge 4 to the neutral line N of the mains. When the acousto-optic switch is off, the current flowing , the current flowing through the relay 5 after the resistance-capacitance step-down is very small, and if it does not reach its rated current, the relay is in the disconnected state, thereby cutting off the live wire in the alternating current, so as to achieve the effect of completely turning off the LED light. When the acousto-optic control switch is in the conduction state, the current flowing through the control device also becomes larger, the coil of the relay 5 will be pulled in, and the LED lamp will be completely lit.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. LED bulb lamp that is applicable to sonic-opticalcon trolled switch, it is characterized in that: comprise the AC/DC constant-current driving power supply, electric capacity, resistance, rectifier bridge, relay, described rectifier bridge is by diode D1, diode D2, diode D3, diode D4 forms, the negative pole of described diode D1 links to each other with the negative pole of diode D2 and forms first node, described diode D3 negative pole link to each other with the positive pole of diode D2 and form second node, the positive pole of described diode D4 links to each other with the positive pole of diode D3 and forms the 3rd node, and the negative pole of described diode D4 links to each other with the positive pole of diode D1 and forms the 4th node;

Described electric capacity is in parallel with resistance, a node that forms after described electric capacity and the resistance parallel connection links to each other with the 4th node of described rectifier bridge, second node of described rectifier bridge links to each other with the negative input mouth of AC/DC constant-current driving power supply, first node of described rectifier bridge is by the coil ground connection of relay, another node that forms after the 3rd node ground connection of described rectifier bridge, described electric capacity and resistance parallel connection links to each other with the electrode input end mouth of AC/DC constant-current driving power supply by the contact of relay.

2. a kind of LED bulb lamp that is applicable to sonic-opticalcon trolled switch according to claim 1 is characterized in that: be provided with fuse between another node that forms after described electric capacity and the resistance parallel connection and the contact that relay is connected.

3. a kind of LED bulb lamp that is applicable to sonic-opticalcon trolled switch according to claim 1 and 2, it is characterized in that: described electric capacity is metal film electric capacity, its capacitance size is 0.47 μ F.

4. according to claim 1,2 or 3 described a kind of LED bulb lamps that are applicable to sonic-opticalcon trolled switch, it is characterized in that: described resistance is bleeder resistance, and its resistance is 512K Ω.

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