CN204313165U - Road lamp cap - Google Patents

Abstract

The utility model provides a lamp holder for a street lamp, which comprises a lamp holder, a lampshade, a top cover, a reflector and an LED chip. A second protruding ring is arranged on the top cover, and a first annular groove is provided on the bottom surface of the top cover. The first annular groove is located on the outermost side of the top cover. The groove wall is screw-fitted, and the space between the axially outward end surface of the first protruding ring and the first ring groove is provided with a first sealing ring in an interference fit manner, and the lamp holder is provided with a second ring groove, and the second ring groove is located in the On the outermost side of the lamp holder, the radially outward end surface of the second protruding ring is screwed with the radially inward groove wall of the second annular groove, and the space between the axially outward end surface of the second protruding ring and the second annular groove The upper is provided with a second sealing ring in an interference fit manner. The protruding ring and the ring groove are threaded and fixed, and the sealing ring is set in an interference fit. This installation method is not only easy to install but also has good sealing performance.

Description

Street lamp holder

technical field

The utility model relates to a lamp holder of a street lamp, in particular to a lamp holder of a street lamp installed with an LED luminous body.

Background technique

LED lights have the characteristics of long life and power saving, and have been widely used in recent years. With the successful development of high-power LED, it has been gradually applied to urban road lighting. At the same time, with the continuous implementation of the National Semiconductor Lighting Project, the National Development and Reform Commission's LED road lighting bidding project, and the LED street lamp project of ten thousand lights in ten cities, LED street lamps and other road lighting lamps have gradually become popular due to their advantages of high efficiency, energy saving, and high color rendering. Popularized and applied to urban ordinary road lighting.

At present, common street lights include light poles and LED street light lamp holders installed on the light poles. LED street light lamp holders include upper lampshades, lower lampshades, reflectors, lamp holders, LED light-emitting elements, power components and top covers. When assembling the lamp cap of the LED street lamp, after connecting the lamp holder, the lower lampshade, the upper lampshade and the top cover in sequence, since a complex connection structure needs to be set up between the various parts of the LED street lamp lamp cap, while ensuring its overall rigidity requirements, it is also necessary to To meet the requirements of waterproof performance, the overall structure of the lamp head of the LED street lamp is complicated, and the installation steps are cumbersome.

Contents of the invention

The purpose of the utility model is to provide a street lamp lamp holder with good sealing performance and convenient installation and disassembly.

In order to achieve the purpose of the utility model, the utility model provides a lamp holder for a street lamp, including a lamp holder, a lampshade, a top cover, a reflector and an LED chip. Installed on the lampshade, the reflector is arranged in the lampshade, the LED chip is arranged in the lampshade and fixed on the top cover, wherein, the lampshade is provided with a first protruding ring at the first end close to the top cover, and the lampshade is near the lamp holder. The second end is provided with a second convex ring, the bottom surface of the top cover is provided with a first annular groove, the first annular groove is located at the outermost side of the top cover, and the radially outward end surface of the first convex ring is radially aligned with the first annular groove. The inward groove wall is threadedly fitted, the space between the axially outward end surface of the first protruding ring and the first ring groove is provided with a first sealing ring in an interference fit manner, the lamp holder is provided with a second ring groove, and the second The ring groove is located at the outermost side of the lamp holder, the radially outward end surface of the second protruding ring is screwed with the radially inward groove wall of the second ring groove, and the axially outward end surface of the second protruding ring is in contact with the second ring groove. A second sealing ring is provided with an interference fit in the space between them.

It can be seen from the above scheme that by providing threaded convex rings on the upper and lower ends of the lampshade, and by providing ring grooves on the top cover and ring grooves on the lamp holder, the convex ring and the ring groove are screwed and fixedly connected, and at the same time The sealing ring is set with an interference fit between the convex ring and the ring groove. The installation method through this thread fit is not only convenient and easy to install, but also helps to improve the sealing performance of the street lamp lamp head, so that the street lamp lamp head can effectively prevent water vapor from entering the lampshade when it is used outdoors Inside.

A further solution is that the LED chip is provided with a plurality of light-emitting lamp beads facing the lamp holder, and the lamp head of the street lamp is also provided with a reflector, and the reflector is provided with a plurality of through holes, and the reflector is arranged on the LED chip, and each through hole covers Outside a glowing lamp bead.

It can be seen from the above that the reflection of light can be effectively increased through the reflector, and the brightness can be effectively improved.

A further solution is that the lamp holder is provided with a plurality of first positioning columns in the lampshade along the axial direction, and the plurality of first positioning columns are evenly distributed on the lamp holder along the circumferential direction, and the first end of the reflector is outward along the circumferential direction. A flange is extended, and the flange is provided with a plurality of first positioning holes, the flange is adjacent to the lampshade, the first positioning hole is set on the first positioning column, and the screw is fixedly installed in the first positioning column through the first positioning hole .

It can be seen from the above that through the positioning column arranged in the axial direction, the rotation of the lampshade and the reflector in the circumferential direction is effectively restricted, and then the reflector, the lampshade and the lamp holder are tightly pressed together by screws, which is conducive to improving the height of the lamp head of the street lamp. While the overall rigidity is high, its easy installation method is also conducive to improving production efficiency.

A further solution is that an air guide hole is provided through the top cover, and the air guide hole is provided with an air valve.

It can be seen from the above that since the inside of the lampshade is sealed, the air in the lampshade will expand due to heat when the lamp holder of the street lamp is in operation, so it is necessary to install an air valve to balance the air pressure in the lampshade.

A further solution is that the lamp holder is provided with a wire hole through which the wire is electrically connected to the power supply assembly, and a waterproof screw is arranged in the wire hole.

It can be seen from the above that the waterproof screw can effectively prevent water vapor from entering the lamp holder from the lamp holder.

A further solution is that the top cover is provided with a plurality of cooling fins on the outward end surface.

A further solution is that a plurality of cooling fins are radially distributed on the end surface facing outwards of the top cover.

It can be seen from the above that since the LED chip is adjacent to the top cover, the waste heat generated by the LED chip can be effectively dissipated through the radially distributed cooling fins.

Description of drawings

Fig. 1 is a structural diagram of an embodiment of a lamp holder for a street lamp of the present invention.

Fig. 2 is an exploded view of an embodiment of the lamp holder of the street lamp of the present invention.

Fig. 3 is an exploded view of the top cover and the air valve part in the embodiment of the lamp holder of the street lamp of the present invention.

Fig. 4 is a cross-sectional view of an embodiment of a lamp cap of a street lamp of the present invention.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Detailed ways

Referring to FIG. 1 , FIG. 1 is a structural diagram of a lamp holder of a street lamp. The lamp cap of the street lamp includes a top cover 1, a lampshade 2 and a lamp holder 3. The fixed end of the lamp holder 3 is used to be fixedly connected with the light pole. The lampshade 2 is installed above the lamp holder 3. 1 is installed above the lampshade 2.

Referring to Fig. 2, Fig. 2 is an exploded view of the lamp holder of the street lamp. The middle part of the spherical lampshade 2 forms an accommodating cavity, and a reflector 4 is installed in the accommodating cavity of the lampshade 2. The reflector 4 is arranged in a conical shape with open upper and lower ends. The outer surface of the reflective member 4 is coated with reflective material, and the reflective member 4 is provided with a hollow cavity along the axial direction. A flange 41 is provided extending outward along the circumferential direction on the lower end of the reflector 4 , and a plurality of positioning holes 42 are penetratingly opened on the flange 41 , and the plurality of positioning holes 42 are evenly distributed in the circumferential direction along the circumferential direction.

Referring to FIG. 3 in combination with FIG. 2 , FIG. 3 is an exploded view of the top cover 1 and the air valve member 11 . The top cover 1 is arranged in a disc shape, and a plurality of heat dissipation fins 12 are arranged on the outward end surface of the top cover 1. The plurality of heat dissipation fins 12 are radially arranged with the center of the top cover 4 as the origin, and the adjacent two A heat conduction groove for air circulation is formed between the heat dissipation fins 12 . An air guide hole 13 is provided on the outer periphery of the top cover 1 penetrating in the axial direction, and the air valve element 11 is installed in the air guide hole 13 .

Referring to FIG. 4 in combination with FIG. 2 , FIG. 4 is a cross-sectional view of a lamp cap of a street lamp. The lampshade 2 is arranged in a spherical shape, and a hollow cavity is provided in the middle of the lampshade 2 , and a protruding ring 21 extends outward along the circumferential direction at the opening of the lampshade 2 facing the top cover 1 . An annular groove 13 is arranged on the bottom surface of the top cover 1 facing the lampshade 2, the annular groove 13 is arranged on the outermost side of the top cover 4, and the convex ring 21 cooperates with the annular groove 13, specifically, the convex ring 21 is radially outward. The end surface is provided with threads, and the radially inward groove wall of the ring groove 13 is provided with threads. The width of the axially outward end surface of the protruding ring 21 is approximately equal to the width of the opening of the annular groove 13 , and a sealing ring 51 is provided in the space between the axially outward end surface of the protruding ring 21 and the annular groove 13 with an interference fit.

The lamp holder 3 is arranged in a cup shape, and a recessed cavity is formed in the middle of the lamp holder 3, and a power supply assembly (not shown) is installed in the cavity. A ring groove 31 is provided on the lamp holder 3 , and the ring groove 31 is located at the outermost position of the lamp holder 3 . At the opening of the lampshade 2 towards the lamp holder 3, a convex ring 22 extends outward in the circumferential direction, and the convex ring 22 cooperates with the ring groove 31. Specifically, the radially outward end surface of the convex ring 22 is provided with threads, and the diameter of the ring groove 31 is The inward groove wall is provided with threads, and the radially outward end surface of the protruding ring 22 is threadedly engaged with the radially inward groove wall of the annular groove 31 . The width of the axially outward end surface of the protruding ring 22 is approximately equal to the width of the opening of the annular groove 31 , and a sealing ring 52 is provided in the space between the axially outward end surface of the protruding ring 22 and the annular groove 31 with an interference fit.

The lamp holder 3 is provided with a plurality of positioning posts 32 extending in the axial direction, and the plurality of positioning posts 32 are evenly distributed in the circumferential direction of the lamp holder 3 , and each positioning post 32 is provided with a mounting hole. The positioning hole 42 of the reflective member 4 is arranged above the mounting hole of the positioning column 32, and is fixedly installed in the mounting hole of the positioning column 32 through the positioning hole 42 by the screw 33, so that the flange 41 of the reflective member 4 is adjacent to the lampshade 2 . The middle part of the lamp holder 3 is provided with a wire hole through which the wire is electrically connected to the power supply assembly located in the lamp holder 3 , and a waterproof screw 34 is arranged on the wire hole.

The top cover 1 is provided with an LED chip on the bottom surface facing the lampshade 2, the substrate of the LED chip is adjacent to and fixed to the top cover 1, and a plurality of LED light-emitting lamp beads 61 are arranged on the substrate of the LED chip, and the plurality of LED light-emitting lamp beads 61 are uniformly arranged. Distributed on the LED chip. A reflective plate 62 is fixedly connected to the LED chip. The reflective plate 62 is provided with a plurality of through holes, and each through hole is set outside an LED light emitting lamp bead 61. The end surface of the reflective plate 451 facing the lamp holder 2 is coated with reflective material.

It can be seen from the above that by setting the threaded convex rings on the upper and lower ends of the lampshade, and by setting the ring grooves on the top cover and the lamp holder, the convex ring and the ring groove are screwed and fixedly connected, and at the same time, the The sealing ring is set with an interference fit between the ring and the ring groove. The installation method through this thread fit is not only convenient and easy to install, but also helps to improve the sealing performance of the street lamp lamp head, so that the street lamp lamp head can effectively prevent water vapor from entering the lampshade when it is used outdoors. .

Claims (7)

1. Street light lamp holder, including A lamp holder, a power supply component is installed in the lamp holder; a lampshade, the lampshade is mounted on the lamp holder; a top cover, the top cover is installed on the lampshade; a reflector, the reflector is arranged in the lampshade; an LED chip, the LED chip is arranged in the lampshade and fixed on the top cover; It is characterized by: The lampshade is provided with a first protruding ring at the first end close to the top cover, and the lampshade is provided with a second protruding ring at the second end close to the lamp holder; The bottom surface of the top cover is provided with a first annular groove, the first annular groove is located on the outermost side of the top cover, and the radially outward end surface of the first protruding ring is radially opposite to the first annular groove. The inner groove wall is threadedly fitted, and the space between the axially outward end surface of the first protruding ring and the first ring groove is provided with a first sealing ring in an interference fit manner; The lamp holder is provided with a second annular groove, the second annular groove is located at the outermost side of the lamp holder, and the radially outward end surface of the second protruding ring is in contact with the radially inward end surface of the second annular groove. The groove wall is threadedly fitted, and a second sealing ring is provided with an interference fit in the space between the axially outward end surface of the second protruding ring and the second ring groove. 2. The street lamp lamp holder according to claim 1, characterized in that: The LED chip is provided with a plurality of light-emitting lamp beads facing the lamp holder, and the lamp head of the street lamp is also provided with a reflector, and the reflector is provided with a plurality of through holes, and the reflector is arranged on the LED chip , each of the through holes is covered by one of the light emitting lamp beads. 3. The street lamp lamp holder according to claim 2, characterized in that: The lamp holder is provided with a plurality of first positioning columns in the lampshade along the axial direction, and the plurality of first positioning columns are evenly distributed on the lamp holder along the circumferential direction; The first end of the reflector has a flange extending outward in the circumferential direction, the flange is provided with a plurality of first positioning holes, the flange is adjacent to the lampshade, and the first positioning holes are set on the On the first positioning post, a screw is fixedly installed in the first positioning post through the first positioning hole. 4. The street lamp lamp holder according to claim 3, characterized in that: An air guiding hole is formed through the top cover, and the air guiding hole is provided with an air valve. 5. The street lamp lamp holder according to claim 4, characterized in that: The lamp holder is provided with a wire hole through which the wire is electrically connected to the power supply assembly, and a waterproof screw is arranged in the wire hole. 6. The street lamp holder according to any one of claims 1 to 5, characterized in that: The top cover is provided with a plurality of cooling fins on the outward end surface. 7. The street lamp lamp holder according to claim 6, characterized in that: A plurality of the heat dissipation fins are radially distributed on the outward end surface of the top cover.