CN215675070U

CN215675070U - Fixing structure for preventing lens from deforming

Info

Publication number: CN215675070U
Application number: CN202121992302.3U
Authority: CN
Inventors: 王敏; 胡俊; 曾平
Original assignee: China Energy Saving Jinghe Technology Co ltd
Current assignee: China Energy Saving Jinghe Technology Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-28
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a fixing structure for preventing lens deformation, wherein a plurality of first fixing pieces are arranged on a lens surface cover, a second fixing piece is sleeved on the first fixing pieces, the second fixing pieces penetrate through a light source plate and then are embedded into fixing holes of a heat dissipation structure, the first fixing pieces are expansion columns, the second fixing pieces are expansion sleeve rubber plugs, interference fit is carried out between the expansion sleeve rubber plugs and the fixing holes in the heat dissipation plates, sawtooth structures are arranged on the outer surfaces of the expansion sleeve rubber plugs and used for enhancing friction force, and the first fixing pieces and the second fixing pieces are tightly attached and assembled, so that the lens surface cover is fixed at an ideal position, and the fixing structure has the beneficial effects of being reduced and attractive in lamp.

Description

Fixing structure for preventing lens from deforming

Technical Field

The utility model relates to the field of LED lamp illumination, in particular to a fixing structure for preventing lens deformation.

Background

The LED street lamp lens is a secondary optical device for changing LED light, and the design of the LED street lamp lens directly influences the light emitting efficiency, the total uniformity of road surface brightness, the longitudinal uniformity and the uniformity of road surface illumination of an LED. The light distribution of the theoretical design of the existing LED street lamp lens meets the requirements, but the actual test light distribution and the theory still have great deviation after the module used for the street lamp is assembled, the plastic material of polycarbonate is usually adopted by the lens, and meanwhile, the silica gel ring can be adopted for sealing and waterproofing in order to ensure the waterproof performance of the module, so that the lens can be floated and deformed due to the rebounding of the silica gel ring after the lens is assembled directly, and the secondary optical curved surface can not reach the theoretical design effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the optical design can not realize the theoretical effect due to the fact that the lens floats upwards and deforms due to the rebound of the silica gel ring in the lamp assembling process of the existing LED street lamp lens.

In order to solve the technical problem, the utility model is realized by the following technical scheme: the utility model provides a prevent fixed knot structure of lens deformation, the lens face is covered and is provided with a plurality of first mounting, the cover has the second mounting on the first mounting, the second mounting passes in embedding heat radiation structure's the fixed orifices behind the light source board, the second mounting is the expansion sleeve structure.

Preferably, the fixing hole is a threaded hole or a round hole.

Preferably, the second fixing piece is provided with two half pipe walls, and the gap distance between the two half pipe walls and close to the light source plate is smaller than the gap distance between the two half pipe walls and close to the heat dissipation structure.

Preferably, a step structure is arranged at a position, close to the light source board, of the second fixing piece, and the outer diameter of the step structure is the same as that of the fixing through hole formed in the light source board.

Preferably, the outer surface of the second fixing member is provided with a thread structure.

Preferably, the outer surface of the second fixing part is provided with a plurality of sawtooth structures.

Preferably, the second fixing piece and the fixing hole are in an interference fit structure.

Preferably, the minimum size of the inner diameter of the second fixing part is greater than or equal to the size of the outer diameter of the first fixing part.

Preferably, the first fixing member is integrally formed with the lens face cover.

Preferably, the first fixing part is an expansion column, and the second fixing part is a plastic expansion rubber plug.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses a fixing structure for preventing lens deformation, a plurality of first fixing pieces are arranged on a lens surface cover, the first fixing piece is sleeved with a second fixing piece, the second fixing piece penetrates through the light source plate and then is embedded into a fixing hole of the heat dissipation structure, the first fixing piece is an expansion column, the second fixing piece is an expansion sleeve rubber plug, the expansion sleeve rubber plug is in interference fit with the upper fixing hole of the radiating fin, the outer surface of the expansion sleeve rubber plug is provided with a sawtooth structure, used for enhancing the friction force, the first fixing piece and the second fixing piece are tightly attached and assembled, thereby fixing the lens surface cover at an ideal position, solving the problems that the lens floats upwards and deforms due to the rebound of the silica gel ring in the lamp assembly process of the prior LED street lamp lens, therefore, the technical problem that the theoretical effect cannot be realized in the optical design is solved, and the lamp has the beneficial effects of being reduced and attractive.

Drawings

Fig. 1 is an exploded view of the fixing structure for preventing deformation of a lens according to the present invention.

Fig. 2 is a schematic cross-sectional view of a lamp according to embodiment 1 of the fixing structure for preventing lens deformation.

Fig. 3 is a schematic cross-sectional view of a lamp according to embodiment 2 of the fixing structure for preventing lens deformation.

Fig. 4 is a schematic structural view of a second fixing member of the fixing structure for preventing lens deformation according to the present invention.

Reference numerals: 1. a lens face cover; 11. a first fixing member; 2. a light source plate; 21. a fixing through hole; 3. a heat dissipation structure; 31. a fixing hole; 4. a second fixing member; 41. a sawtooth structure; 42. and (3) a step structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 4, an LED module with a fixing structure for preventing lens deformation includes a lens surface cover 1, a light source board 2, and a heat dissipation structure 3, wherein three first fixing members 11 are disposed at a middle position of the lens surface cover 1, and the first fixing members 11 are integrally formed with the lens surface cover 1; a fixing through hole 21 is formed in the light source board 2, a fixing hole 31 is formed in a joint surface of the heat dissipation structure 3 and the light source board 2, and the first fixing pieces 11 correspond to the fixing through hole 21 and the fixing hole 31 one by one; the fixing structure is characterized by further comprising second fixing pieces 4, the second fixing pieces 4 correspond to the first fixing pieces 11 one to one, the second fixing pieces 4 are sleeved on the first fixing pieces 11, and the second fixing pieces 4 penetrate through the fixing through holes 21 and then are embedded into the fixing holes 31.

Further, the first fixing member 11 is an expansion column, and the second fixing member 4 is an expansion sleeve rubber plug.

Further, the second fixing member 4 has two half tube walls, the gap distance between the two half tube walls is not equal, and the gap distance close to the light source plate 2 is smaller than the gap distance close to the heat dissipation structure 3.

Further, the minimum size of the inner diameter of the second fixing member 4 is greater than or equal to the outer diameter of the first fixing member 11, a saw tooth structure 41 is arranged on the outer surface of the second fixing member 4, and the depth of the saw tooth structure 41 is the size of the interference fit between the first fixing member 11 and the fixing hole 31.

Further, the minimum clearance distance between the two half pipe walls of the second fixing member 4 is larger than the size of the total interference fit, and when the second fixing member 4 is inserted into the fixing hole 31, the half pipe walls are bent and deformed towards the inside of the middle, so that the operation is facilitated.

Further, a step structure 42 is arranged at a position of the second fixing member 4 close to the light source board 2, and the outer diameter of the step structure 42 is the same as the size of the fixing through hole 21 arranged on the light source board 2.

Further, the lens surface cover 1 is assembled and fixed with the heat dissipation structure 3 through a snap structure or a fastening bolt.

The foregoing lists merely illustrate specific embodiments of the utility model. It will be clear that the utility model is not limited to the above embodiments, but that many similar modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.

Claims

1. The utility model provides a prevent fixed knot of lens deformation constructs which characterized in that, lens face is covered and is provided with a plurality of first mounting, the cover has the second mounting on the first mounting, the second mounting passes in embedding heat radiation structure's the fixed orifices behind the light source board, the second mounting is the expansion sleeve structure.

2. The fixing structure for preventing deformation of a lens according to claim 1, wherein the fixing hole is a screw hole or a circular hole.

3. The fixing structure for preventing lens distortion of claim 1, wherein the second fixing member has two half tube walls, and a gap distance between the two half tube walls near the light source board is smaller than a gap distance near the heat dissipating structure.

4. The fixing structure for preventing lens deformation as set forth in claim 1, wherein a step structure is provided on the second fixing member near the light source board mounting position, and the step structure has an outer diameter dimension identical to that of the fixing through hole provided on the light source board.

5. The lens deformation preventing fixing structure of claim 1, wherein the second fixing member is provided with a screw thread structure on an outer surface thereof.

6. The lens distortion prevention fixture structure of claim 1, wherein the second fixture has a plurality of saw-tooth structures on an outer surface thereof.

7. The lens deformation preventing fixing structure of claim 1, wherein the second fixing member and the fixing hole are in an interference fit structure.

8. The lens deformation preventing fixing structure of claim 1, wherein the minimum dimension of the inner diameter of the second fixing member is equal to or greater than the dimension of the outer diameter of the first fixing member.

9. The lens distortion prevention fixing structure of claim 1, wherein the first fixing member is integrally formed with the lens face cover.

10. The lens deformation preventing fixing structure of claim 1, wherein the first fixing member is an expansion column, and the second fixing member is a plastic expansion plug.