CN201539736U

CN201539736U - LED lamp

Info

Publication number: CN201539736U
Application number: CN2009202055253U
Authority: CN
Inventors: 王钊
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2009-09-29
Filing date: 2009-09-29
Publication date: 2010-08-04
Anticipated expiration: 2019-09-29

Abstract

The utility model provides an LED lamp, which comprises an electric conductor, a driving circuit, a plurality of LEDs and an outer casing with a holding cavity, wherein the holding cavity holds the electric conductor, the driving circuit and the LEDs, the electric conductor comprises a circuit board provided with a plurality of holding holes, the circuit board is fixedly connected with the outer casing, and the LEDs penetrate through the holding holes to be connected with the inner surface of the outer casing and are electrically connected with the driving circuit via the circuit board. As the LEDs are directly connected with the inner surface of the outer casing, an aluminum-based heat conducting plate is saved, and then the LED lamp is simple in structure. Heat generated by the LED lamp is transferred outwards via the outer casing, the heat resistance of a heat transmission passage of the LED lamp is small, namely radiating efficiency of the LED lamp is higher than that of the prior art, and then the LED lamp is low in heat concentration, thereby increasing stability of the LED lamp.

Description

A kind of LED light fixture

Technical field

The utility model belongs to lighting technical field, relates in particular to a kind of LED light fixture.

Background technology

At present, need to adopt in a large number LED (light emitting diode) lamp as light source in lighting field, outdoor lighting especially in the commercial street, places such as skyscraper and urban district views, all needs to adopt the night illumination of LED lamp, Landscape Lighting and dyeing illumination.A problem that mainly faces of outdoor LED lamp is a heat dissipation problem.Heat radiation mainly contains two parts, and a part is the heat radiation of LED, and another is the heat radiation of electronic devices and components.Fig. 1 is the structural representation of the LED light fixture of prior art.With reference to Fig. 1, the LED light fixture of prior art comprises first shell 100, be positioned at the aluminium radiating board 500 that first shell 100 fixedlys connected with first shell 100, the top pcb board 400 that is positioned at heat sink 500, several are mounted on LED300, drive circuit and second shell 200 on the pcb board 400.Described second shell 200 and first shell 100 are sealed and matched.Drive circuit of the prior art is on the pcb board 400, that is to say that most of electronic components are positioned on the pcb board 400.When existing LED light fixture was worked, the heat that its LED300 and electronic component produce was delivered on first shell 100 by pcb board 400 and heat sink 500 and then is dispersed into the external world.In the prior art there be the shortcoming of LED light fixture: first, drive circuit and LED300 are positioned at pcb board 400 upper surfaces, the heat that heat that LED300 produces and electronic component produce just is superimposed, pass to pcb board 400 and heat sink 500 simultaneously, and pcb board 400 and heat sink 500 can not in time effectively pass heat, be in the condition of high temperature when causing the work of LED light fixture, influenced the stability of LED light fixture; The second, because the heat of the generation of LED is very big, along with the gathering of heat, can causes the inefficacy of some electronic component in the drive circuit, and then influence the stabilizing member of LED light fixture.

The utility model content

The utility model is mainly to solve in the prior art owing to heat distributes does not go out the technical problem that causes LED light fixture less stable, and a kind of LED light fixture of good heat dissipation effect simple in structure is provided.

The technical solution of the utility model is as follows:

A kind of LED light fixture, comprise electric conductor, drive circuit, some LED and have the shell of containing cavity, the ccontaining described electric conductor of described containing cavity, drive circuit and some LED, wherein, described electric conductor comprises the circuit board with some containing holes, described circuit board is fixedlyed connected with shell, and described some LED pass described containing hole and are connected with inner surface of outer cover, and described some LED are electrically connected with drive circuit by described circuit board.

The beneficial effect of technical solutions of the utility model:

The utility model has omitted aluminium base heat-conducting plate, so simple in structure by some LED directly are connected with inner surface of outer cover; The heat that LED produces directly passes by shell, the thermal resistance of heat transmission channel of the present utility model is smaller, that is to say the want height of LED light fixture radiating efficiency of the present utility model than prior art, therefore LED light fixture heat accumulation of the present utility model is few, has improved the stability of LED light fixture.

Description of drawings

Fig. 1 is the structural representation of the LED light fixture of prior art;

Fig. 2 is the board structure of circuit schematic diagram of the utility model embodiment LED light fixture;

Fig. 3 is the fractionation structural representation of the utility model embodiment LED light fixture.

The specific embodiment

Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

The utility model provides a kind of LED light fixture, comprise electric conductor, drive circuit, some LED and have the shell of containing cavity, the ccontaining described electric conductor of described containing cavity, drive circuit and some LED, wherein, described electric conductor comprises the circuit board with some containing holes, described circuit board is fixedlyed connected with shell, and described some LED pass described containing hole and are connected with inner surface of outer cover, and described some LED are electrically connected with drive circuit by described circuit board.The heat that LED produces directly passes by shell, and thermal resistance is smaller, the radiating efficiency height, and therefore LED light fixture heat accumulation of the present utility model is few, has improved the stability of LED light fixture.

Further, also have one deck heat-conducting glue between described LED light fixture and the inner surface of outer cover, this connection has taken into account fixedly connected and heat radiation, and the assembling of LED light fixture is also simple.

Further, described shell comprises first shell and second shell that cooperates with first body seal, described first shell and second shell are formed at described containing cavity, wherein, described circuit board is fixedlyed connected with first inner surface of outer cover, described second shell has a transparent window and a groove, and described drive circuit is positioned at described groove, and described some LED are over against described transparent window, be connected with first inner surface of outer cover.The technical program is by placed apart with drive circuit and some LED, and the heat of generation dispels the heat away by different shells, has further improved radiating efficiency; Drive circuit is separated the maintenance that helps the LED light fixture from circuit board.

Further, described circuit board is a rigid printed circuit board, can better fix some LED.

Further, described circuit board also has some louvres, has further improved the radiating efficiency and the whole heat balance that has guaranteed the LED light fixture of LED light fixture.

Further, described first shell also has the heating column that cooperates with louvre.

Further, described circuit board comprises that also some installing holes, described LED light fixture comprise that also quantity second nut consistent with installing hole, described first shell have and the corresponding screw hole of described installing hole, and described second nut passes installing hole and cooperates with screw hole.

Further, described containing hole and installing hole are intervally arranged on circuit board by row respectively.

Further, described containing hole and installing hole are intervally arranged on circuit board in the concentric circles mode respectively.

Fig. 2 is the board structure of circuit schematic diagram of the utility model embodiment LED light fixture.

Below in conjunction with Fig. 2 and Fig. 3 preferred version of the present utility model is elaborated, makes the technical solution of the utility model and beneficial effect clearer.

With reference to Fig. 3, the LED light fixture of the utility model embodiment comprises first shell 2, second shell 1 that cooperates with first shell, LED4, circuit board 3, first end cap 51, second end cap 52 and the drive circuit.

Described second shell 1 comprises the groove 12 and the metal aluminum sheet and the transparent window 11 that are positioned at the rectangular through holes on groove 12 next doors that has to outer lug, described transparent window 11 is made of transparent optical plastic, Merlon for example, described transparent window 11 is fixed with sealing with described rectangular through holes.Certain second shell 1 and transparent window 11 can be other shapes, and the mode that described transparent window 11 and described rectangular through holes are fixed with sealing does not repeat them here for well known to a person skilled in the art technology.Described transparent window 11 is used to penetrate the light that LED4 sends, described groove 12 is used to install drive circuit, realize that described drive circuit and LED4 are installed separately, and the heat that drive circuit produces is dispersed into directly in the air by second shell 1, can not have influence on LED4.

Described circuit board 3 has some containing holes 31 and some installing holes 32.Described circuit board 3 can be flexible PCB (FPC), also can be rigid printed circuit board (PCB), has better mechanical stability for making LED4, and the preferred described circuit board 3 of present embodiment is a rigid printed circuit board.The shape of described circuit board 3 is similar to the shape of described transparent window 11, helps the light ejaculation as much as possible that LED4 produces like this and saves cost, and the shape of the circuit board 3 of present embodiment is a rectangle also for this reason, be positioned at described transparent window 11 over against locating.Arranging of described containing hole 31 and described installing hole 32 is regular.Described containing hole 31 is used to place LED4, so arranging of LED4 also is regular.The number that the preferred described containing hole 31 of present embodiment has ordered series of numbers, every row containing hole 31 is severally not wait to tens; Described installing hole 32 also has ordered series of numbers, and for two row containing holes 31 are at interval arranged, the quantity of every row installing hole 32 is severally not wait to tens.Described containing hole 31 and described installing hole 32 also can be spaced in the concentric circles mode.Help reducing gathering of heat that LED4 produces.

Described first shell 2 has the screw hole 21 corresponding with described installing hole 32, and this screw hole 21 is a blind hole, has so just guaranteed the LED airtightness of lamps, simultaneously again can fixing circuit board 3.

LED light fixture first shell 2 and second shell 1 of this enforcement are fixed by first nut, two ends are also by first end cap 51 and second end cap, 52 sealing and fixing, increase the structural stability of whole LED light fixture, this assembling cooperates and belongs to technology well known to those skilled in the art, does not repeat them here.Described LED4 passes described containing hole 31 and is connected with first shell, 2 inner surfaces, preferred described LED4 sticks on described first shell, 2 inner surfaces by heat-conducting glue, like this, most of heat directly is dispersed in the air by first shell 2, described LED4 is electrically connected with circuit board 3, described circuit board 3 is electrically connected with drive circuit by lead, and the heat that LED4 produces can not have influence on drive circuit yet.So the LED light fixture of present embodiment has been realized thermoelectric separation, more traditional LED light fixture, the LED light fixture of present embodiment has advantage of simple structure, also has better stability and property easy to maintenance simultaneously.Described circuit board 3 is fixedlyed connected with first shell 2 by second nut, and described second nut passes installing hole 32 and cooperates with screw hole 21 on first shell 2, and then fixing circuit board 3.Described second nut preferably has the aluminium matter nut of thermal conductive resin, and such second nut also can be with part heat transferred first shell 2.Described containing hole 31 is intervally arranged with installing hole 32, because the heat of holding circuit plate 3 is even, also helps the heat of circuit board 3 is shed rapidly by second nut simultaneously.Certainly, the mode that circuit board is fixedlyed connected with shell of prior art also has other, for example welds, passes through bar or post bonding or bayonet fittings or the like mode, also is the connected mode that is used between circuit board 3 of the present utility model and first outer 2.

With reference to Fig. 2, the circuit board 3 of present embodiment preferably also has louvre 33, can randomly arrange, and also can regularly arrange.Preferred described louvre 33 regular the arranging of present embodiment are positioned at two row containing holes, 31 midfeather places, and described interval is not provided with installing hole 32.33 through holes of described louvre increase the gas communication of LED lamp interior like this, help LED light fixture heat balance.

Preferred described first shell 2 of present embodiment also has some heating columns that cooperate with louvre, described heating column helps the rapid guiding of the heat above the circuit board 3 first shell 2, then distribute, help reducing the bulk temperature of LED light fixture, also help the installation of circuit board simultaneously.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. LED light fixture, comprise electric conductor, drive circuit, some LED and have the shell of containing cavity, the ccontaining described electric conductor of described containing cavity, drive circuit and some LED, it is characterized in that, described electric conductor comprises the circuit board with some containing holes, described circuit board is fixedlyed connected with shell, and described some LED pass described containing hole and are connected with inner surface of outer cover, and described some LED are electrically connected with drive circuit by described circuit board.

2. LED light fixture as claimed in claim 1, it is characterized in that, described shell comprises first shell and second shell that cooperates with first body seal, described first shell and second shell are formed at described containing cavity, wherein, described circuit board is fixedlyed connected with first inner surface of outer cover, and described second shell has a transparent window and a groove, described drive circuit is positioned at described groove, and described some LED are over against described transparent window, be connected with first inner surface of outer cover.

3. LED light fixture as claimed in claim 1 is characterized in that, described circuit board is a rigid printed circuit board.

4. LED light fixture as claimed in claim 1 is characterized in that described circuit board also has some louvres.

5. LED light fixture as claimed in claim 4 is characterized in that, described first shell also has the heating column that cooperates with louvre.

6. LED light fixture as claimed in claim 2, it is characterized in that, described circuit board comprises that also some installing holes, described LED light fixture comprise that also quantity second nut consistent with installing hole, described first shell have and the corresponding screw hole of described installing hole, and described second nut passes installing hole and cooperates with screw hole.

7. LED light fixture as claimed in claim 6 is characterized in that described containing hole and installing hole are intervally arranged on circuit board by row respectively.

8. LED light fixture as claimed in claim 6 is characterized in that described containing hole and installing hole are intervally arranged on circuit board in the concentric circles mode respectively.

9. as each described LED light fixture of claim 1 to 8, it is characterized in that also having one deck heat-conducting glue between described LED light fixture and the inner surface of outer cover.