CN2842972Y

CN2842972Y - LED lamp constant-flow driver

Info

Publication number: CN2842972Y
Application number: CN 200520067509
Authority: CN
Inventors: 陈志云
Original assignee: SHENZHEN CE-STAR ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: SHENZHEN CE-STAR ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2005-11-21
Filing date: 2005-11-21
Publication date: 2006-11-29
Anticipated expiration: 2015-11-21

Abstract

A kind of LED constant-flow driver, comprise two circuit boards 1,2, be connected as a single entity by connector 3 between two circuit boards 1,2, circuit between the circuit board 1,2 is connected to a complete circuit, in the gap between two circuit boards 1,2 the bigger electric elements of volume are housed, as transformer 41 and fuse 42 etc.; One circuit board 1 upper bottom surface has hv filtering electrochemical capacitor 4 above in described two circuit boards, makes driver be turriform generally.It can be directly installed in the existing lamp socket on the basis that does not change existing holder structure; It has small and exquisite, the compact conformation of volume, and tower configuration is specially adapted to E26, the use of E27 lamp holder, and the advantage that reliability is high and the life-span is long.

Description

LED lamp constant-flow driver

Technical field

The utility model relates to a kind of LED lamp constant-flow driver.

Background technology

Semiconductor technology has changed the world, and the semiconductor lighting technology will change our world again.Along with semiconductor illuminating light source in urban look, commercial large-screen, traffic lights, vehicle head taillight direction indicator lamp, the application in special lighting fields such as mobile phone and PDA backlight, with its full coloured light, unlimited colour mixture, switch rapidly, shatter-proof, moisture resistance, cold temperature, the overlength longevity, keep in repair advantage less, it is the most popular that semiconductor light sources has become the whole world, the light source of attracting attention most, particularly the luminous efficiency of LED just increases substantially along with the continuous maturation of material and technology, and semiconductor lighting is considered to 21 century and most possibly enters one of a kind of novel solid-state cold light source in general lighting field and high-tech sector of tool development prospect.But at present, the LED lamp that is used to throw light on mostly because the volume of its driver is bigger, and makes the volume of LED lamp also bigger, and costs an arm and a leg, and is difficult to popularize.Therefore, it is lower to be badly in need of a kind of cost on the market, does not need existing E26 or E27 lamp holder user are carried out any track remodelling, just can directly be contained in the interior LED constant-flow driver of lamp socket of existing incandescent lamp or electricity-saving lamp.

Summary of the invention

The utility model is to provide a kind of to society can directly be contained in existing E26 or the E27 bulb socket, and does not need user's bulb socket is carried out the LED constant-flow driver of any track remodelling.

The technical solution of the utility model is: design a kind of LED constant-flow driver, comprise the circuit board of two or more than two diameter less than existing bulb socket internal diameter, be connected as a single entity by connector between the two adjacent circuit plates, circuit between the circuit board is connected to a complete circuit, and the bigger electric elements of volume are housed in the gap between two adjacent circuit plates.

Described circuit board is circular, and the internal diameter of its diameter and existing bulb socket adapts.

Described circuit board also can be square, and the internal diameter of its circumscribed diameter and existing bulb socket adapts.

Described two or more than two circuit board is two circuit boards.

One upper bottom surface has the hv filtering electrochemical capacitor in described two circuit boards, makes driver be turriform generally.

Because the utility model has adopted driver to constitute unique tower structure by upper and lower multilayer circuit board, and the diameter of its diameter and existing lamp socket is corresponding, so it can be directly installed in the existing lamp socket on the basis that does not change existing holder structure; In addition, the hv filtering electrochemical capacitor that the driver life-span is had the greatest impact places the minimum last layer circuit board of temperature ladder, away from the higher power device of temperature.The hv filtering electrochemical capacitor life-span can be prolonged like this, the highly reliable and long-life characteristics of driver can be guaranteed.In addition, the utility model also has the small size close-coupled, and tower structure is specially adapted to the advantage of E26, the use of E27 lamp holder.

Description of drawings

Fig. 1: the structural representation of a kind of embodiment of the present utility model.

Fig. 2: be the generalized section of Fig. 1.

Fig. 3: circuit theory schematic diagram of the present utility model.

Embodiment

See also Fig. 1 and Fig. 2, it is a kind of LED constant-flow driver, comprise two

circuit boards

1,2, be connected as a single entity by connector 3 between two

circuit boards

1,2, circuit between the

circuit board

1,2 is connected to a complete circuit (see figure 3), in the gap between two

circuit boards

1,2 the bigger electric elements of volume are housed, as transformer 41, fuse 42 and photoelectrical coupler 43 etc.; One circuit board 1 upper bottom surface has hv filtering electrochemical capacitor 4 above in described two circuit boards, makes driver be turriform generally.

In order to be complementary with existing lamp socket, the utility

model circuit board

1,2 adopts circular tower structure.Certainly, the foregoing circuit plate also can be square, and its circumscribed diameter should adapt with the internal diameter of existing bulb socket.In the present embodiment, its circuit board is two, obviously, also can be designed to comprise the circuit board more than two as required.

See also Fig. 3, Fig. 3 is a circuit theory schematic diagram of the present utility model.From figure as can be known, circuit is made up of ac voltage rectifier filter circuit and DC-DC switch formula constant current change-over circuit two large divisions.The ac voltage rectifier filter circuit mainly is made up of 4 diodes (or a rectifier bridge) and a hv filtering electrochemical capacitor, also comprises protection devices such as fuse, thermistor in addition; DC-DC switch formula constant current change-over circuit mainly contains switch transformer; pwm chip, field effect transistor (MOSFET), rectifier diode and elements such as output filter capacitor and current sampling resistor comprise overvoltage (LED open circuit or the reversal connection) protective circuit that voltage stabilizing didoe constitutes in addition.This constant-current drive circuit can drive the LED of single (or a plurality of) series connection (or in parallel), and has functions such as short-circuit protection and overvoltage protection.

Claims

1, a kind of LED constant-flow driver, it is characterized in that: comprise the circuit board of two or more than two diameter less than existing bulb socket internal diameter, be connected as a single entity by connector between the two adjacent circuit plates, circuit between the circuit board is connected to a complete circuit, and the bigger electric elements of volume are housed in the gap between two adjacent circuit plates.

2, LED constant-flow driver according to claim 1 is characterized in that: state circuit board for circular, the internal diameter of its diameter and existing bulb socket adapts.

3, LED constant-flow driver according to claim 1 is characterized in that: described circuit board is square, and the internal diameter of its circumscribed diameter and existing bulb socket adapts.

4, according to the described LED constant-flow driver of any one claim in the claim 1 to 3, it is characterized in that: described two or more than two circuit board is two circuit boards.

5, LED constant-flow driver according to claim 4 is characterized in that: one upper bottom surface has the hv filtering electrochemical capacitor in described two circuit boards, makes driver be turriform generally.