CN103249199A

CN103249199A - LEDbulb lamp

Info

Publication number: CN103249199A
Application number: CN201210023641XA
Authority: CN
Inventors: 王中美
Original assignee: BIGLED POWER SUPPLY TECHNOLOGY Co Ltd
Current assignee: BIGLED POWER SUPPLY TECHNOLOGY Co Ltd
Priority date: 2012-02-03
Filing date: 2012-02-03
Publication date: 2013-08-14

Abstract

The invention relates to an LED (light emitting diode) bulb lamp which is characterized in that the LED bulb lamp is directly driven by electric supply and external stable high voltage direct current; a driving switching power supply is arranged inside the LED bulb lamp; a constant-current drive circuit comprises a bridge rectifier and a galvanostat; an LED light source module is formed by combining high-voltage LED chips connected in series; high voltage direct current voltage, obtained by that the electric supply (input alternating current sinusoidal voltage) is subjected to full-wave rectification by the bridge rectifier, is directly sent into a galvanostat circuit to be subjected to constant current; the stable high voltage direct current directly drives the LED light source module formed by combining the high voltage LED chips connected in series; and the LED bulb lamp comprises the LED light source module, a lamp holder and a housing.

Description

A kind of LED bulb lamp

Technical field

Adopt high-voltage LED chip tandem compound to become the led light source module, directly send the constant current of galvanostat circuit by the voltage of civil power (input AC sinusoidal voltage) after the bridge rectifier full-wave rectification, this stable high-voltage direct current directly drives the led light source module that described high-voltage LED chip tandem compound becomes, and forms the LED bulb lamp with lamp holder and shell.

Background technology

LED bulb lamp type of drive adopts simple Switching Power Supply to drive usually, and isolated form and non-isolation type are arranged, because the physical dimension of LED bulb lamp is very limited, the space that driving power is installed is very narrow, and assembling is difficulty relatively, also is difficult to carry out dielectric strength; The heating of led light source module has been difficult to shed, and adds the just more difficult heat radiation of driving power module heating back, and the general efficient of driving power module is not very high, and the spontaneous heating problem also is difficult to resolve determines;

Often depend on the life-span of driving power module the useful life of LED bulb lamp, the electronic devices and components of driving power module are to work under airtight higher temperature conditions, these electronic devices and components at high temperature useful life limited, particularly the employed electrochemical capacitor life-span is short, and be subjected to the high influence of ambient temperature bigger, shortened the useful life of driving power module greatly

Above problem is unfavorable for that the new LED bulb lamp of popularizing environmental protection uses, and is the difficult problem that vast electronic engineering technical staff is badly in need of solving.

Content of the present invention

Core technology of the present invention is: LED bulb lamp inside does not drive uses Switching Power Supply, form drive circuit by a bridge rectifier and a galvanostat circuit, adopt high-voltage LED chip tandem compound to become the led light source module, directly send the constant current of galvanostat circuit by the voltage of civil power (input AC sinusoidal voltage) after the bridge rectifier full-wave rectification, this stable high-voltage direct current directly drives the led light source module that described high-voltage LED chip tandem compound becomes, and the led light source module is formed the LED bulb lamp with lamp holder and shell.

The technical solution adopted for the present invention to solve the technical problems is:

LED bulb lamp of the present invention has two kinds of power drives modes: a kind ofly directly drive with civil power, the external stable high-voltage dc voltage of a kind of usefulness drives; LED bulb lamp inside does not drive uses Switching Power Supply, form constant-current drive circuit by a bridge rectifier and a galvanostat circuit, adopt high-voltage LED chip tandem compound to become the led light source module, light the LED bulb lamp by direct driving of civil power (input AC sinusoidal voltage), also can drive by external stable high-voltage dc voltage, comprising:

Through bridge rectifier: be made up of integrated circuit rectifier bridge or discrete rectifier diode, the bridge rectifier input directly is connected with civil power (input AC sinusoidal voltage), and the bridge rectifier output is connected with the led light source module with the galvanostat circuit;

Galvanostat circuit: formed by semiconductor current regulator diode or constant current triode or integrated constant current IC or electronics discrete component; Can be fixed galvanostat, maybe can debug galvanostat or high voltage and constant current device or special constant-current driver composition; The galvanostat circuit is connected with described bridge rectifier output, and the constant current output connects the led light source module, and the stable high voltage direct current of output directly drives and lights the led light source module;

The led light source module: (conventional sign: HLED) tandem compound forms to adopt several high-voltage LED chips, use the area of different line voltages, a number of series connection high-voltage LED chip should be different, led light source module forward voltage drop value after the series connection should be near the effective value (as: 220VAC of the used civil power in this area, 220*1.414=311V the led light source module forward voltage drop value after the series connection is near 310V); The present led chip producer of countries and regions such as Korea S, Japan, the U.S., the Taiwan high-voltage LED chip that releases one after another, domestic also had a company that produces the high-voltage LED chip; The present high-voltage LED chip of releasing, single LEDs is the more of 1W/50V, civil power is the area of 220VAC, can select for use 6 high-voltage LED chips to be in series, the use of can connecting equally of the high-voltage LED chip of other forward voltage depreciations is as long as the led light source module forward voltage drop value after the series connection should be near the amplitude of the used civil power in this area;

Lamp holder and shell: lamp holder works the effect of connection, and shell is made up of aluminium shell and perspex shell, plays heat radiation, bright dipping and fixation; Described bridge rectifier and described galvanostat circuit are installed in the inside of aluminium shell, and space requirement is smaller; Described led light source module is fixed on the heat-radiating substrate should well contact installation with the aluminium shell, to reduce thermal resistance; The perspex shell plays bright dipping.

Described LED bulb lamp has two kinds of power drives modes, comprising:

Directly drive with civil power, after described bridge rectifier full-wave rectification, send the constant current of described galvanostat circuit with civil power (input AC sinusoidal voltage), provide high-voltage direct current directly to drive described led light source module; The forward voltage drop value of used led light source module should close to and be not higher than the amplitude of the used line voltage in this area;

Drive with external stable high voltage direct current potential source, external driving power output is connected to the input of described LED bulb lamp, and the galvanostat circuit of bulb lamp inside provides the high-voltage direct current of continous-stable to drive and lights described led light source module; At this moment the magnitude of voltage of external stable high voltage direct current potential source can close to or be higher than the amplitude of this territory of use's line voltage, but the forward voltage values of the led light source chip of tandem compound should close to and be not higher than the magnitude of voltage of described external stable high voltage direct voltage source; There is bridge rectifier LED bulb lamp inside, and external stable high voltage direct voltage can be regardless of positive and negative when inserting described LED bulb lamp input; When adopting external stable high-voltage dc voltage power drives, the direct current that drives described led light source module is to stablize, be continuous current operating state continuously.

Bridge rectifier circuit and the galvanostat circuit of described LED bulb lamp inside do not use electrolytic capacitor and high frequency transformer, eliminated electrolytic capacitor short problem in useful life fully, get rid of the problem of high frequency transformer heating, the life-span of described bridge rectifier circuit and galvanostat circuit is satisfied the long-life requirement of LED fully; Described bridge rectifier circuit and galvanostat circuit all are very common electronic devices and components, and be with low cost, makes the cheap of described LED bulb lamp, is convenient to popularizing of environmental protection LED illumination; Described LED bulb lamp is small and exquisite with bridge rectifier circuit and galvanostat circuit size structure, is beneficial to install and heat radiation, is beneficial to the useful life that prolongs LED, reduces the light decay of LED.

Described LED bulb lamp, when adopting external stable high voltage direct current potential source to drive, more than one a plurality of described LED bulb lamps can share same external stable high-voltage dc voltage driving power.

Described LED bulb lamp can comprise whole described features, also can be to comprise the described feature of part that described LED bulb lamp structural principle also can be used for other LED lighting lamp structure devices.

Part embodiment of the present invention is elaborated with way of example below in conjunction with accompanying drawing, these features of the present invention, characteristics and advantage will be more readily apparent from;

Fig. 1 is one embodiment of the invention, with the principle schematic of the direct driving LED bulb lamp of civil power;

Fig. 2 is one embodiment of the invention, the principle schematic that drives with external stable high voltage direct current potential source;

With reference to figure 1, embodiment of a kind of LED bulb lamp of the present invention is characterized in that:

After described bridge rectifier 2 is rectified entirely, send described galvanostat circuit 4 constant currents with civil power 1 (input AC sinusoidal voltage), provide high-voltage direct current directly to drive described led light source module 5; The forward voltage drop value of used led light source module 5 should be near the amplitude of the used line voltage 1 in this area, and more near the amplitude of the regional used line voltage 1 of use, the efficient of LED bulb lamp 6 is just more high.

With reference to figure 2, embodiment of a kind of LED bulb lamp of the present invention is characterized in that:

Make driving power with external stable high voltage direct current potential source 7, be connected to the input of described LED bulb lamp 6, the galvanostat circuit 4 of bulb lamp inside provides the high-voltage direct current of continous-stable to drive and lights described led light source module 5; At this moment the magnitude of voltage of external stable high voltage direct current potential source 7 can be close to the amplitude of this territory of use's line voltage 1, the amplitude that also can be higher than this territory of use's line voltage 1, but the forward voltage values of the led light source module 5 of tandem compound should be close to while be higher than the magnitude of voltage of described external stable high voltage direct voltage source 7; There is bridge rectifier 2 LED bulb lamp 6 inside, and external stable high-voltage dc voltage 7 can be regardless of positive and negative when doing external power supply, be convenient to install and use; When adopting external stable high voltage direct current voltage source 7 to drive, the direct current that drives described led light source module 5 be stablize, continuous uninterrupted continuous current operating state, the light efficiency of LED bulb lamp 6 is stable.

Though more than described the embodiment that illustrates more of the present invention, but those of ordinary skill in the art is to be understood that, these only illustrate, and can make numerous variations or modification to these embodiment, and not deviate from principle of the present invention and essence.Scope of the present invention is only limited by appended claims.

Above embodiment illustrates the present invention, but not as restriction of the present invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, modification, the change of above embodiment.

Claims

1. LED bulb lamp is characterized in that: comprising:

Bridge rectifier: be made up of integrated circuit rectifier bridge or discrete rectifier diode, the input of bridge rectifier directly is connected with civil power (input AC sinusoidal voltage), and the output of bridge rectifier is connected with the led light source module with the galvanostat circuit;

Galvanostat circuit: formed by semiconductor current regulator diode or constant current triode or integrated constant current IC or electronics discrete component constant-current source circuit; Can be fixed galvanostat, maybe can debug galvanostat or high voltage and constant current device or special constant-current driver composition; The input of described galvanostat circuit is connected with described bridge rectifier output, and the output of galvanostat circuit connects described led light source module, and the stable high voltage direct current of described galvanostat circuit output directly drives and lights the led light source module;

Led light source module: adopt several high-voltage LED chip tandem compounds to form, use the area of different civil powers (input AC sinusoidal voltage) magnitude of voltage, a number of the high-voltage LED chip of described series connection should be different, the forward voltage depreciation of the led light source module after the series connection should close to and be not higher than the amplitude of the used civil power in this area.

2. LED bulb lamp as claimed in claim 1 has two kinds of power drives modes, it is characterized in that:

The one, directly drive with civil power, after described bridge rectifier full-wave rectification, send the constant current of described galvanostat circuit with civil power (input AC sinusoidal voltage), provide high-voltage direct current directly to drive described led light source module; The forward voltage drop value of used led light source module should close to and be not higher than the amplitude of the used line voltage in this area;

The one, drive with external stable high voltage direct current potential source, the high-voltage dc voltage source output terminal of external driving is connected to the input of described LED bulb lamp, and the galvanostat circuit of bulb lamp inside provides the high-voltage direct current of continous-stable to drive and lights described led light source module; At this moment the magnitude of voltage of external stable high voltage direct current potential source can close to or be higher than the amplitude of this territory of use's line voltage, but the forward voltage values of the led light source chip of tandem compound should close to and be not higher than the magnitude of voltage of described external stable high voltage direct current potential source; There is bridge rectifier LED bulb lamp inside, and external stable high voltage direct voltage can be regardless of positive and negative when inserting described LED bulb lamp input; When adopting external stable high-voltage dc voltage power drives, the direct current that drives described led light source module is to stablize, be continuous uninterrupted continuous current operating state.

3. LED bulb lamp as claimed in claim 1 is characterized in that, bridge rectifier circuit and the galvanostat circuit of described LED bulb lamp inside do not use electrolytic capacitor and electronics high frequency transformer.

4. LED bulb lamp as claimed in claim 1, it is characterized in that, when described LED bulb lamp adopted external stable high voltage direct current potential source to drive, more than one a plurality of described LED bulb lamps can share same external stable high-voltage dc voltage driving power.