CN203454007U

CN203454007U - Lens assembling structure

Info

Publication number: CN203454007U
Application number: CN201320531031.0U
Authority: CN
Inventors: 董荣宾
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2014-02-26
Anticipated expiration: 2023-08-20

Abstract

A lens assembling structure comprises an aluminum substrate, a lens, a waterproof ring, a PCB (printed circuit board), a gasket and multiple screws; the lens is mounted on the aluminum substrate by the multiple screws; the PCB is mounted between the lens and the aluminum substrate by positioning; the waterproof ring is arranged in the middle of edges of the lens and the aluminum substrate for isolating the PCB and a chip from the external environment; the multiple screws press the gasket and fix the lens by threaded holes. The thermal stress problem can be solved by uniformly distributing the screws, the light outgoing property is prevented from being influenced by the thermal stress expansion of the lens, and a design with better water proofing performance is adopted to perform separate water proofing on each screw. Positioning holes are formed in the PCB, so the multi-positioning and multi-aligning of the lens, the PCB and the aluminum substrate are facilitated; the screws are locked by adopting through holes, so the thickness of the aluminum substrate is reduced and the size of the product is reasonably reduced, the mounting difficulty is wholly reduced, the mounting quality is improved and the mounting cost is reduced.

Description

Lens assembling structure

[technical field]

The utility model relates to field of illuminating device, relates in particular to the lens assembling structure of LED.

[background technology]

Emitting led assembling should be noted that wiring, waterproof, encapsulation relation, first pcb board is screwed on aluminium base, then with lens by the screw cover waterproof of getting up.In lens, encapsulated a plurality of chips, in industry to lens be fixedly that with screw, to be looped around lens uniform around, but can cause lamp pearl to emit light and heat, cause that lens are inner produces stronger thermal stress expansion perk.Conventional waterproof type is in addition, lens around around a circle plain washer carry out waterproof, screw thread is directly pressed on flat shim and is fixed and waterproof, and screwed hole is blind hole.In order to allow screw fixation method effectively, firmly, just must increase the thickness of aluminium base, to guarantee the length of action of screw.Such design allows overall structure is heavy, cost is high.

[summary of the invention]

It is high that the utility model has proposed water resistance for above problem, further the lens assembling structure of structure optimization.

The lens assembling structure that relates to described in the utility model, comprise aluminium base, lens, water proof ring, pcb board, packing ring, a plurality of screw, lens are arranged on aluminium base by a plurality of screws, in the middle of both by location and installation pcb board, and the middle water proof ring that is provided with one in both marginal portions, isolated inner pcb board, chip and external environment, the plurality of screw is pressed on packing ring by screwed hole fixed lens.

The plurality of screw is distributed on edge and the middle part of lens, and the position of the plurality of screw is within water proof ring.

On lens, each screw position has a protruding alignment pin.

On pcb board, have corresponding locating hole, the alignment pin of corresponding lens positions.

The utility model can solve thermal stress issues by uniform screw, avoids lens thermal stress to expand and causes optical property to be affected, and adopts water resistance better to design, and each screw is carried out to independent waterproof.And locating hole is set on pcb board, be conducive to the multiple location of lens, PCB and aluminium base and aim at.And can adopt through hole to carry out lock-screw, reduce the thickness of aluminium base, the rationalization of product is dwindled.The whole installation difficulty that reduces, improves installation quality, reduces installation cost.

[accompanying drawing explanation]

Fig. 1 is the structural representation of the utility model lens assembling structure;

Fig. 2 is that the A of the utility model lens assembling structure Fig. 1 is to cutaway view;

Fig. 3 is that the B of the utility model lens assembling structure Fig. 1 is to cutaway view;

Wherein: 10, aluminium base; 20, lens; 21, alignment pin; 30, water proof ring; 40, pcb board; 41, locating hole; 50, packing ring; 60, screw.

[specific embodiment]

Below in conjunction with drawings and Examples, the utility model lens assembling structure is elaborated.

Please refer to accompanying drawing 1: the lens assembling structure that relates to described in the utility model, comprise aluminium base 10, lens 20, water proof ring 30, pcb board 40, packing ring 50, a plurality of screw 60, lens 20 are arranged on aluminium base 10 by a plurality of screws 60, in the middle of both by location and installation pcb board 40, and the middle water proof ring 30 that is provided with one in both marginal portions, isolated inner pcb board 40, chip and external environment, the plurality of screw 60 is pressed on packing ring by screwed hole fixed lens 20.

The plurality of screw 60 is distributed on edge and the middle part of lens 20, and the position of the plurality of screw is within water proof ring.This water proof ring is O type water proof ring, and the waterproof effect of O type water proof ring is better, can carry out independent waterproof to screw, and screwed hole can open as through hole, in the situation that keeping screw threads for fastening power and locking force constant, can reduce the thickness of aluminium base.

On lens, each screw position has a protruding alignment pin 21.On pcb board, have corresponding locating hole 41, the alignment pin 21 of corresponding lens positions.And the alignment pin 21 of our lens is through corresponding locating hole on pcb board 40, so both can locate PCB.Can push down pcb board again.Not needing has increased extra screw again.When conventional location, only have two alignment pins, lens are positioned, but when lamp is worked, can emit light and heat, the relative position of lamp pearl and lens is changed, can cause light type to change, and occur hot spot, be unfavorable for light effect.So the design that adopts each screw position to have an alignment pin can add strong fix alignment precision, guarantee that the relative position of lamp pearl and lens changes in allowable range, improve and light effect.

The above, it is only the utility model preferred embodiment, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, according to the utility model technology, refer to any simple modification that above embodiment is done, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.

Claims

1. a lens assembling structure, comprise aluminium base, lens, water proof ring, pcb board, packing ring, a plurality of screw, lens are arranged on aluminium base by a plurality of screws, in the middle of both by location and installation pcb board, and the middle water proof ring that is provided with one in both marginal portions, isolated inner pcb board, chip and external environment, the plurality of screw is pressed on packing ring by screwed hole fixed lens.

2. lens assembling structure according to claim 1, is characterized in that, the plurality of screw is distributed on edge and the middle part of lens, and the position of the plurality of screw is within water proof ring.

3. lens assembling structure according to claim 1, is characterized in that, on lens, each screw position has a protruding alignment pin.

4. lens assembling structure according to claim 1, is characterized in that on pcb board, having corresponding locating hole, and the alignment pin of corresponding lens positions.