CN201377709Y

CN201377709Y - LED bulb

Info

Publication number: CN201377709Y
Application number: CN200920133935U
Authority: CN
Inventors: 郭同风
Original assignee: Shenzhen Changfang Lighting Industrial Co Ltd
Current assignee: Shenzhen ChangFang Semiconductor Light Co., Ltd.
Priority date: 2009-07-23
Filing date: 2009-07-23
Publication date: 2010-01-06
Anticipated expiration: 2019-07-23

Abstract

An LED bulb comprises a lamp body, a luminous unit and a light source positioning unit. The lamp body comprises a casing and a cover cap, the casing is connected with a radiating aluminum substrate, the luminous unit comprises a PCB and an LED lamp, the light source positioning unit comprises a sealing ring and a reflecting sheet, and a clearance between the reflecting sheet and the aluminum substrate can be filled by aid of the sealing ring arranged between the reflecting sheet and the radiating aluminum substrate, thereby avoiding the problem that the reflecting sheet can shake relative to the aluminum substrate. In addition, the bottom of the reflecting sheet is closely connected with the sealing ring, thereby effectively preventing light leakage. Simultaneously, dust can not enter the luminous unit, thereby overcoming the shortage of shaking of the existing LED bulb caused by a clearance between the reflecting sheet of the existing LED bulb and the radiating aluminum substrate, and preventing light leakage well.

Description

A kind of LED bulb

Technical field

The utility model relates to a kind of lighting, be meant a kind of lamp body, luminescence unit and light source positioning unit of comprising especially, wherein this lamp body comprises housing and cover cap, on this housing, be connected with the heat-radiating aluminum plate, this luminescence unit comprises pcb board and LED lamp, and this light source positioning unit comprises the LED bulb of sealing ring and reflecting piece.

Background technology

Along with science and technology development, the application of LED lamp also more and more widely except the indicator lamp that is applied to instrument and meter simply, also is widely used in the lighting field now.

Since the light beam that sends of LED lamp be forward and have certain angle of divergence, so just can need install reflector additional as incandescent lamp, and LED itself sends is coloured light, so just need not filter by coloured lens, thereby solved false demonstration and lens color drift problem, improved light utilization efficiency, and the long working life of LED lamp, be 5～10 years, the maintenance expense is low; And since single led only be a special luminescence unit in the whole signal lamp lamp panel, as long as the signal lamp wiring board is reasonable in design,, can not influence other LED luminescence unit even indivedual LED burns yet, thereby influence the signal lamp whole structure, so the application of LED light fixture also more and more widely.

In present LED energy-saving bulb production industry, the bulb IP grade of making the heat radiation Lamp cup of Al squeezing material does not also reach more than the IP50, the bulb of the high power integrated LED light source of especially this band reflecting piece, the substrate of its high-power integrated optical source LED is fixed on the aluminium sheet of a circle, aluminium sheet directly is fixed on the Lamp cup, reflecting piece just is buckled on the aluminium sheet then, diffuser is fixed on the reflecting piece with the mode of buckle again, following point will appear in this kind structure, because the position of reflecting piece is to position by the step that the Lamp cup secondary operations is come out, so tolerance is difficult to guarantee, the slit will appear between reflecting piece and aluminium sheet, cause well to seal the light-source chamber of reflecting piece and diffuser, do not reach the dustproof effect; The phenomenon that the side light leak also can occur influences light efficiency; Reflecting piece is that the mode with buckle is fixed on the aluminium sheet, owing to the gap appears in above-mentioned processing technology reason, also can make reflecting piece and diffuser rock abnormal sound.

Summary of the invention

The utility model provides a kind of LED bulb, it comprises lamp body, luminescence unit and light source positioning unit, wherein this lamp body comprises housing and cover cap, on this housing, be connected with the heat-radiating aluminum plate, this luminescence unit comprises pcb board and LED lamp, this light source positioning unit comprises sealing ring and reflecting piece, by the sealing ring that is arranged between this reflecting piece and this heat-radiating aluminum plate, gap between this reflecting piece and the aluminium sheet is filled by the sealing circle, the situation of having avoided relative this heat-radiating aluminum plate of this reflecting piece to rock, and the bottom of this reflecting piece closely links to each other with sealing ring, prevent light leakage phenomena effectively, simultaneously dust can't be entered on this luminescence unit.

In order to solve above technical problem, technical solution adopted in the utility model is:

A kind of LED bulb, it comprises lamp body, luminescence unit and light source positioning unit, and wherein this lamp body comprises housing and cover cap, and this housing links to each other with this cover cap, be connected with the heat-radiating aluminum plate again on this housing, this heat-radiating aluminum plate is fixed in this housing.

This luminescence unit is installed on this heat-radiating aluminum plate, and this luminescence unit comprises pcb board and LED lamp.

And this light source positioning unit is connected with this heat-radiating aluminum plate, this light source positioning unit comprises sealing ring and reflecting piece, the bottom of sealing circle is connected with this heat-radiating aluminum plate, and the sealing circle is the outside that is sheathed on this luminescence unit, the sealing circle has the hole, light stops inwall and dustproof outer wall, this hole is the centre that is opened in the sealing circle, and establish this luminescence unit by this borehole jack, and this light stops that inwall is the inner surface in this hole, this light stops that inwall is corresponding with the light of the LED lamp of this luminescence unit emission, and this dustproof outer wall is the outer surface of sealing circle.

This reflecting piece is connected with sealing circle and this lamp body, this reflecting piece comprises level and smooth bottom surface, loophole and reflective surface, this level and smooth bottom surface is to be connected with the top of sealing circle, and also be connected with this housing of this lamp body, and this loophole is corresponding with the LED lamp of this luminescence unit, this reflective surface is the another side that is arranged at this level and smooth bottom surface, and this reflective surface is cambered surface, and this reflective surface is corresponding with the light of this LED lamp emission.

The beneficial effects of the utility model are: a kind of LED bulb, it comprises lamp body, luminescence unit and light source positioning unit, wherein this lamp body comprises housing and cover cap, on this housing, be connected with the heat-radiating aluminum plate, this luminescence unit comprises pcb board and LED lamp, this light source positioning unit comprises sealing ring and reflecting piece, by the sealing ring that is arranged between this reflecting piece and this heat-radiating aluminum plate, gap between this reflecting piece and the aluminium sheet is filled by the sealing circle, the situation of having avoided relative this heat-radiating aluminum plate of this reflecting piece to rock, and the bottom of this reflecting piece closely links to each other with sealing ring, prevent light leakage phenomena effectively, simultaneously dust can't be entered on this luminescence unit.

Description of drawings

Fig. 1 is an installation diagram of the present utility model;

Fig. 2 is a section sectional drawing of the present utility model;

Fig. 3 is a three-dimensional cutaway view of the present utility model;

Fig. 4 is positioning unit connection status figure of the present utility model.

The specific embodiment

Shown in Fig. 1-4: a kind of LED bulb, it comprises lamp body 10, luminescence unit 20 and positioning unit 30, wherein, this lamp body 10 comprises Lamp cup 11, lampshade 12 and heat-radiating aluminum plate 13.

As shown in Figure 1, 2: this Lamp cup 11 comprises power supply connector 51, housing 52 and radiator 53, and this power supply connector 51 is to be connected with an end of this housing 52, and the other end of this housing 52 is connected with this radiator 53.

This lampshade 12 is connected with this Lamp cup 11, this lampshade 12 is made for plastic cement PC material, this lampshade 12 comprises some clamping blocks 55 and diffuser 56, some these clamping blocks 55 are arranged at this diffuser 56 bottoms, this diffuser 56 has transparent surface 57 and clamping limit 58, this transparent surface 57 is a cambered surface, and this transparent surface 57 is connected with this clamping limit 58.

This heat-radiating aluminum plate 13 is connected with the other end of this radiator 53, and further, this heat-radiating aluminum plate 13 fixedly is bolted in the other end of this radiator 53.

As shown in Figure 1, 2: this luminescence unit 20 be with this heat-radiating aluminum plate 13 of this lamp body 10 mutually regulation connect, this luminescence unit 20 comprises pcb board 21 and LED lamp 22, this pcb board 21 is fixedly connected with this heat-radiating aluminum plate 13, and between this pcb board 21 and this heat-radiating aluminum plate 13, be coated with thermal paste, and this LED lamp 22 is fixedly connected on this pcb board 21.

Shown in Fig. 1,3,4: this positioning unit 30 is connected with lamp body 10, this positioning unit 30 comprises sealing ring 31 and reflecting piece 32, sealing circle 31 is connected with this reflecting piece 32, sealing circle 31 comprises bottom surface 61, end face 62 and hole 63, this bottom surface 61 is connected with this heat-radiating aluminum plate 13, and this hole 63 is to run through this bottom surface 61 and this end face 62 fully, and this hole 63 is sheathed these luminescence units 20.

Sealing circle 31 comprises that also light stops inwall 64 and dustproof outer wall 65 again, this light stops that inwall 64 is the inner surface in this hole 63, this light stops that inwall 64 is that the light that sends with this LED lamp 22 is corresponding, and should dustproof outer wall 65 be the outer surface of sealing circle 31, be corresponding with the external environment condition of this luminescence unit 20, further, sealing circle 31 is made for the foamed silica gel material, and it has characteristics such as high resiliency, highly-flexible degree.

This reflecting piece 32 is connected with sealing ring 31 and this Lamp cup 11, this reflecting piece 32 comprises housing 66, some blocked holes 67 and light source hole 68, some these blocked holes 67 are opened on this housing 66, and some these clamping block 55 clampings mutually of some these blocked holes 67 and this lampshade 12, and it is this light source hole 68 is the centres that are opened in this housing 66, and corresponding with this LED lamp 22 of this luminescence unit 20.

This reflecting piece 32 also has bottom surface 33 and end face 34 again, and this bottom surface 33 is to be connected with this end face 62 of sealing circle 31, and this end face 62 is a cambered surface, and further, this reflecting piece 32 is made for plastic cement PC material.

Further say, this bottom surface 33 of this reflecting piece 32 is connected with this end face 62 of sealing circle 31, the space and the space outerpace at these luminescence unit 20 places are kept apart, prevent that with this this luminescence unit 20 from contacting with impurity such as dusts, and owing to the sealing circle is made by the foamed silica gel material, therefore it has high resiliency, characteristics such as highly-flexible degree, this reflecting piece 32 and this heat-radiating aluminum plate 13 can closely be linked to each other with sealing circle 31, and fill gap between these reflecting piece 32 and this heat-radiating aluminum plate 13 by sealing circle 31, well prevented light leakage phenomena and this reflecting piece 32 situation because of existing the gap to occur rocking with this heat-radiating aluminum plate 13.

Claims

1. LED bulb, it is characterized in that: it comprises lamp body, luminescence unit and positioning unit, wherein, this lamp body comprises Lamp cup, lampshade and heat-radiating aluminum plate,

This Lamp cup comprises power supply connector, housing and radiator, and this power supply connector is to be connected with an end of this housing, and the other end of this housing is connected with this radiator,

This lampshade is connected with this Lamp cup, and this lampshade comprises some clamping blocks and diffuser, and some these clamping blocks are arranged at this diffuser bottom, this diffuser has transparent surface and clamping limit, this transparent surface is a cambered surface, and this transparent surface is connected with this clamping limit

This heat-radiating aluminum plate is connected with the other end of this radiator, and further, this heat-radiating aluminum plate fixedly is bolted in the other end of this radiator,

This luminescence unit be with this heat-radiating aluminum plate of this lamp body mutually regulation connect, this luminescence unit comprises pcb board and LED lamp, this pcb board is fixedly connected with this heat-radiating aluminum plate, and between this pcb board and this heat-radiating aluminum plate, be coated with thermal paste, and this LED lamp is fixedly connected on this pcb board

This positioning unit is connected with lamp body, and this positioning unit comprises sealing ring and reflecting piece, and the sealing circle is connected with this reflecting piece,

This reflecting piece is connected with sealing ring and this Lamp cup, this reflecting piece comprises housing, some blocked holes and light source hole, some these blocked holes are opened on this housing, and some these clamping blocks clamping mutually of some these blocked holes and this lampshade, and this light source hole is the centre that is opened in this housing, and corresponding with this LED lamp of this luminescence unit, and this reflecting piece also has bottom surface and end face again, this bottom surface is to be connected with this end face of sealing circle, and this end face is a cambered surface.

2. a kind of LED bulb as claimed in claim 1 is characterized in that: this lampshade is that plastic cement PC material is made.

3. a kind of LED bulb as claimed in claim 1 is characterized in that: this reflecting piece is that plastic cement PC material is made.

4. a kind of LED bulb as claimed in claim 1 is characterized in that: the sealing circle is arranged between this heat-radiating aluminum plate and this reflecting piece.

5. a kind of LED bulb as claimed in claim 4, it is characterized in that: the sealing circle comprises bottom surface, end face and hole, this bottom surface is connected with this heat-radiating aluminum plate, and this hole is to run through this bottom surface and this end face fully, and this hole is sheathed this luminescence unit.

6. a kind of LED bulb as claimed in claim 4, it is characterized in that: the sealing circle comprises that also light stops inwall and dustproof outer wall, this light stops that inwall is the inner surface in this hole, this light stops that inwall is that the light that sends with this LED lamp is corresponding, and should dustproof outer wall be the outer surface of sealing circle, be corresponding with the external environment condition of this luminescence unit.

7. a kind of LED bulb as claimed in claim 4 is characterized in that: the sealing circle is made for the foamed silica gel material.