CN211019355U

CN211019355U - L ED removes little bright circuit and L ED lamps and lanterns

Info

Publication number: CN211019355U
Application number: CN201922468936.8U
Authority: CN
Inventors: 缪红漫
Original assignee: Meimingyang Appliance Company Jinjing Town Changsha County
Current assignee: Hunan Yaou Electronic Technology Co., Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-14
Anticipated expiration: 2029-12-31

Abstract

The utility model provides an L ED goes little bright circuit and L ED lamps and lanterns, its L0 ED goes little bright circuit and includes thermistor, thermistor is connected between L ED lamps and lanterns live wire and zero line, or thermistor is connected between L ED lamps and lanterns's direct current power supply end, or thermistor is parallelly connected in each or every group lamp pearl of L ED lamps and lanterns again the utility model discloses still include a L ED lamps and lanterns, the utility model discloses an aspect, simple structure, low cost can effectively absorb leakage current, and is applicable in any L ED lamps and lanterns, on the other hand, if L ED lamps and lanterns that have bought back, the user can directly go little bright circuit with the L of taking the casing and the connector on the current L ED lamps and lanterns is connected, need not to look for the people that have professional knowledge to operate, and the practicality is strong, and the security is high.

Description

L ED removes little bright circuit and L ED lamps and lanterns

Technical Field

The utility model relates to the technical field of lamps and lanterns, especially an L ED removes little bright circuit and L ED lamps and lanterns.

Background

L ED lamp is widely used now, because of having the advantages of low power consumption, high brightness, environmental protection, speed has replaced incandescent lamp and lamp tube, L ED lamp usually includes L0 ED module, L1 ED module includes L ED control panel, the output end of L ED control panel connects L ED lamp 'S multiunit lamp pearl unit, L ED lamp' S power cord usually connects a connector, live wire end L and null wire end N of one side of the connector connect L ED control panel alternating voltage input end, the other side of the connector connects 220V power supply through switch S. As shown in figure 1, L ED control panel mainly includes rectifier circuit D, rectifier circuit D usually is diode rectifier bridge, commutate alternating current into direct current, provide direct current voltage for L ED lamp, in order to get the direct current that is as smooth as possible to avoid the appearance of ripple flicker, usually connect a electrolytic capacitor C in parallel at the output end of diode rectifier bridge with the output end of diode rectifier bridge also through BUCK constant current circuit connection lamp pearl unit, drive unit work, or multiunit lamp pearl output end of diode rectifier bridge connect multiunit of BUCK lamp pearl separately through BUCK circuit, the constant current control lamp pearl brightness of each group.

However, the conventional L ED lamp still has a slight brightness after power off, especially in the evening, and the L ED lamp is still in a slight brightness state after power off, which is uncomfortable for people.

L ED lamp is still in the main reason of shining a little after the outage is that the switch connects the N zero line, after the switch disconnection, lamps and lanterns still are being connected the live wire, will send weak light.

However, the above solution makes the structure more complicated, on one hand, it will change the original wire connection structure of L ED lamp, resulting in increased cost and complicated operation, on the other hand, if it is L ED lamp which has been bought, it will not be solved by the buyer himself, and it will need someone with professional electrician knowledge to operate, which is not only impractical, but also unsafe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned not enough of prior art and providing a simple structure, low cost, practical reliable L ED goes little bright circuit and L ED lamps and lanterns.

The technical scheme of the utility model is that:

the utility model relates to an L ED removes little bright circuit, including thermistor, thermistor connects between the live wire of L ED lamps and lanterns and the zero line, perhaps thermistor connects between the direct current power supply end of L ED lamps and lanterns, or thermistor connects in parallel between every or every group lamp pearl of L ED lamps and lanterns again.

Furthermore, the thermistor is integrated on the circuit board and arranged in a shell, two ends of the thermistor are connected with wires, and the wires extend out of the shell.

Furthermore, the lead is connected with a live wire end and a zero wire end on one side of a connector of a power line of the L ED lamp.

Furthermore, the other side of the connector is connected with a 220V power supply through a power switch.

Further, the thermistor is a positive temperature coefficient thermistor.

An L ED lamp, comprising a L ED dim light circuit as described in any one of the above.

Further, the L ED lamps and lanterns include L ED module, and the L ED module includes L ED control panel, thermistor and L ED control panel's alternating current power supply end or direct current power supply end are connected.

Further, the L ED control panel includes rectifier circuit, the voltage input end of rectifier circuit is connected with the interchange power end, connect electric capacity between the voltage output end of rectifier circuit, electric capacity and L ED lamp parallel connection.

Further, the thermistor is welded to an alternating current power supply end of an L ED control board or a direct current voltage output end of a rectifying circuit.

Further, L ED lamp includes multiunit lamp pearl unit, thermistor welds the both ends at every group lamp pearl unit, perhaps welds each lamp pearl both ends in every group lamp pearl unit, realizes parallel connection.

The beneficial effects of the utility model are that on the one hand, simple structure, low cost can effectively absorb leakage current, is applicable in any L ED lamps and lanterns, on the other hand, if the L ED lamps and lanterns of having bought back, the user can directly with the L ED of taking the casing go the little bright circuit with present L ED lamps and lanterns on the connector be connected can, need not to look for the people who has professional electrician's knowledge to operate, the practicality is strong, the security is high.

Drawings

FIG. 1 is a schematic circuit diagram of a L ED control board;

fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of embodiment 3 of the present invention;

fig. 5 is a schematic block circuit diagram according to embodiment 4 of the present invention.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 2, an L ED delustering circuit includes a thermistor PTC connected between the hot terminal L and the neutral terminal N of a L ED light fixture.

When a power switch of an L ED lamp is turned on, a L ED lamp normally emits light, the temperature of a thermistor PTC is increased due to the increase of heating power, the thermistor of the embodiment is a positive temperature coefficient thermistor, when the temperature is increased, the resistance is instantly increased sharply, so that the increase of current is limited, the original brightness of a L ED lamp is not influenced, when the power switch of the L ED lamp is turned off, the temperature of the thermistor is reduced due to the decrease of the current, the resistance value is reduced, the purpose of absorbing L ED leakage current is achieved, and then dim light of the L ED lamp after the power switch is turned off is eliminated.

The embodiment adopts the thermistor to eliminate shimmer, and has simple structure and low cost.

Example 2

As shown in fig. 3, the difference from embodiment 1 is that the thermistor PTC is connected between the dc power terminals of L ED lamps.

L ED lamps and lanterns generally include L ED module, L ED module includes L ED control panel, L ED control panel includes rectifier circuit D, the voltage input end of rectifier circuit D connects alternating current 220V, connect electrolytic capacitor C between the voltage output end of rectifier circuit D, wherein, thermistor PTC locates between the voltage output end of rectifier circuit, with electrolytic capacitor C parallel connection.

The 220V alternating current is rectified by the rectifying circuit D to form direct current, when a power switch of the L ED lamp is turned on, the L ED lamp normally emits light, the temperature of the thermistor PTC rises due to the increase of heating power, so that the resistance can be suddenly increased instantly, the increase of current is limited, the thermistor PTC is equivalent to a broken circuit at the moment, the original brightness of the L ED lamp cannot be influenced, when the power switch of the L ED lamp is turned off, electric leakage generated by the alternating current flows through the rectifying circuit D and is absorbed by the thermistor PTC, and therefore dim light after the L ED lamp is powered off is eliminated.

Example 3

As shown in FIG. 4, the difference from the embodiment 2 is that the thermistor PTC is connected in parallel with two ends of each group of lamp bead units of L ED lamps, the output end of the rectifying circuit D is also connected with two groups of lamp bead units of L ED lamps through a BUCK constant current circuit 1 and a BUCK constant current circuit 2, and the BUCK constant current circuit 1 and the BUCK constant current circuit 2 are connected with the output end of a remote control or intelligent control circuit respectively.

After the power switch of the L ED lamp is disconnected, electric leakage generated by alternating current flows through the rectifying circuit and is absorbed by the thermistor connected with the lamp bead units in parallel, and therefore low light of each group of lamp bead units after power failure is eliminated.

In conclusion, the three schemes can eliminate the dim light of L ED lamps after power failure, effectively absorb leakage current, and have very simple circuit structure, thereby being applicable to any L ED lamp.

Example 4

As shown in FIG. 5, an L ED lamp comprises the L ED delocalized circuit described in the previous embodiment 1, wherein L ED delocalized circuit is integrated in a housing, and the power cord of L ED delocalized circuit extends out of the housing, while the power cord of the conventional L ED lamp is usually connected to a connector and connected to the live wire end L and the neutral wire end N on one side of the connector, and the power cord of the L ED delocalized circuit of the present embodiment is directly connected to the live wire end L and the neutral wire end N on the side of the connector and directly inserted into the connector, while the other side of the connector is connected to a 220V power supply through the power switch S.

It can be said that the thermistor of the L ED bright removing circuit of this embodiment is integrated on the circuit board, and is placed in the casing, can directly make a product, forms mass production, and simple structure, on the one hand, need not to carry out circuit improvement to original L ED lamps and lanterns, only need with this product with the plug connector of L ED lamps and lanterns be connected, on the other hand, even if L ED lamps and lanterns that have bought back, the user can also solve L ED lamps and lanterns's outage little bright problem by oneself through this product, and the security is high.

Example 5

The difference from the embodiment 4 is that L ED is not needed to be manufactured into a product by a micro-bright circuit, but is directly welded at two ends of an existing L ED control board or L ED lamp, wherein the first mode is to directly weld thermistors at a fire wire end and a zero wire end of an alternating current power supply of the L ED control board and to be connected with commercial power through a power switch, the second mode is to directly weld thermistors at a direct current voltage end of the L ED control board, the third mode is to weld a thermistor in parallel on each group of lamp bead units, and the fourth mode is to weld a thermistor in parallel on each lamp bead of each group of lamp bead units.

The original circuit structure of L ED lamps and lanterns is not changed to above-mentioned four modes, only need with thermistor direct welding on L ED control panel or L ED lamp can, very simple to solve the little bright problem of outage of L ED lamps and lanterns.

Claims

1. An L ED (electronic device) dimming circuit is characterized by comprising a thermistor, wherein the thermistor is connected between a live wire and a zero wire of a L ED lamp, or connected between direct current power supply ends of a L ED lamp, or connected in parallel between each group of lamp beads of a L ED lamp.

2. The L ED delocalized circuit of claim 1, wherein the thermistor is integrated on a circuit board and disposed in a housing, and the thermistor has two ends connected to wires extending from the housing.

3. The L ED delocalized circuit of claim 2, wherein the conductors are connected to the live and neutral terminals on the connector side of the power cord of a L ED light fixture.

4. The L ED delocalized circuit of claim 3, wherein the other side of the connector is connected to a 220V power supply via a power switch.

5. The L ED delustering circuit of any one of claims 1 to 4, wherein the thermistor is a positive temperature coefficient thermistor.

6. An L ED luminaire, comprising the L ED delocalizing circuit as claimed in any one of claims 1-5.

7. The L ED lamp of claim 6, wherein the L ED lamp includes a L ED module, the L ED module includes a L ED control board, and the thermistor is connected to an AC power supply terminal or a DC power supply terminal of a L ED control board.

8. The L ED lamp of claim 7, wherein the L ED control board includes a rectifier circuit having a voltage input connected to an AC power supply terminal and a capacitor connected between voltage output terminals of the rectifier circuit, the capacitor being connected in parallel with the L ED lamp.

9. The L ED lamp of claim 8, wherein the thermistor is welded to the AC power supply terminal of the L ED control board or the DC voltage output terminal of the rectifier circuit.

10. The L ED lamp of claim 8, wherein the L ED lamp includes multiple groups of bead units, and the thermistor is welded at both ends of each group of bead units or at both ends of each bead in each group of bead units, thereby realizing parallel connection.