CN209991278U

CN209991278U - LED (light-emitting diode) barrel spotlight

Info

Publication number: CN209991278U
Application number: CN201920650169.XU
Authority: CN
Inventors: 沈迪根; 钟长河; 苏晶晶
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-01-24
Anticipated expiration: 2029-05-08

Abstract

The utility model provides a LED barrel spot lamp, including lamp body, power source head, LED light source, driver and hou gai, the power source head links to each other with the driver electrical property, and LED barrel spot lamp is still including being used for carrying out radiating heating panel and pasting the heat conduction pad on the heating panel to the LED light source, and the heating panel cooperation is installed in the lamp body and with the space in the lamp body preceding chamber and back chamber respectively, and the LED light source is installed in the preceding chamber, and the heat conduction pad links to each other with the laminating of LED light source, and the driver is fixed in and covers after, and the driver is arranged in the back chamber. The utility model arranges the heat radiation plate in the lamp body to separate the space in the lamp body into a front cavity and a rear cavity, the LED light source is arranged in the front cavity, and the driver is arranged in the rear cavity to isolate the influence of the heat generated by the LED light source on the driver; and meanwhile, the driver is fixed on the rear cover to be far away from the LED light source in the front cavity, so that the heat influence of the LED light source on the driver is further reduced, and the service life is prolonged.

Description

LED (light-emitting diode) barrel spotlight

Technical Field

The utility model belongs to the LED lamp field, more specifically say, relate to a LED section of thick bamboo shot-light.

Background

In the current market, the barrel spotlight generally uses a power driver to step down the voltage to drive the LED light source. Currently, for convenience of installation and use, the power driver is generally arranged inside the casing. However, since the LED light source is also disposed in the lamp body, the heat generated by the LED light source directly affects the driver, and thus the life of the driver is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a LED section of thick bamboo shot-light to the LED light source of the LED section of thick bamboo shot-light that exists among the solution prior art generates heat and can directly influence the driver, and influences the problem in life-span.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a LED barrel-type spot lamp, including the lamp body that is the tube-shape setting, be used for connecting external power source's power source, be used for luminous LED light source, drive the driver of LED light source work with cover in the back lid of lamp body rear end, the one end of power source stretches into in the lamp body, the power source with the driver electrical property links to each other, LED barrel-type spot lamp is still including being used for right the LED light source carries out radiating heating panel and pastes in heat conduction pad on the heating panel, the heating panel cooperation install in the lamp body and will space in the lamp body is preceding chamber and back chamber respectively, the LED light source install in the preceding chamber, heat conduction pad with the laminating of LED light source links to each other, the driver is fixed in cover after, the driver is arranged in the back chamber.

Furthermore, a baffle is convexly arranged on the inner surface of the rear cover, an accommodating cavity is defined by the baffle, and the driver is installed in the accommodating cavity.

Further, the rear cover is a plastic cover.

Further, a capacitor for adjusting the stroboscopic degree is arranged in the driver.

Further, a wireless signal receiver is arranged in the driver.

Further, the LED light source is the COB light source, LED section of thick bamboo shot-light still includes the COB support, expose on the COB support the through-hole of the COB chip of COB light source, COB support mounting in on the heating panel.

Furthermore, the LED barrel spotlight further comprises a lens or a reflecting cup for dimming, and the lens or the reflecting cup is arranged at the front end of the lamp body.

Furthermore, the LED barrel spotlight further comprises a face ring supporting the lens or the reflecting cup, and the face ring is installed at the front end of the lamp body.

Furthermore, a plurality of clamping hooks used for clamping the lens or the edge of the reflecting cup are arranged on the surface ring.

Furthermore, a plurality of support columns are arranged in the lamp body, and the heat dissipation plate is fixedly connected with the support columns.

The utility model provides a LED section of thick bamboo shot-light's beneficial effect lies in: compared with the prior art, the LED lamp has the advantages that the heat dissipation plate is arranged in the lamp body to divide the space in the lamp body into the front cavity and the rear cavity, the LED light source is arranged in the front cavity, and the driver is arranged in the rear cavity to isolate the influence of heat generated by the LED light source on the driver; meanwhile, the driver is fixed on the rear cover so as to be far away from the LED light source in the front cavity, the heat influence of the LED light source on the driver is further reduced, and the service life is prolonged; simultaneously when the equipment, can install on the lamp body after driver and back lid are fixed, it is more convenient to assemble.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of an LED tube spotlight provided in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural view of an LED tube spotlight provided in an embodiment of the present invention;

fig. 3 is a schematic view of an explosion structure of an LED barrel spotlight according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an explosion structure of an LED barrel spotlight according to an embodiment of the present invention;

FIG. 5 is an enlarged view of the face ring of FIG. 4;

FIG. 6 is an enlarged view of the rear cover of FIG. 4;

FIG. 7 is a first schematic view of the lens structure of FIG. 4;

FIG. 8 is a second schematic structural view of the lens of FIG. 4;

fig. 9 is a schematic cross-sectional structure diagram of the lens of fig. 8 during dimming.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-LED barrel spotlight; 11-a lamp body; 111-the posterior chamber; 112-anterior chamber; 113-a support column; 114-a notch; 115-a second ring-shaped card slot; 116-a first ring card slot; 12-a power supply head; 13-rear cover; 131-a baffle; 132-a housing chamber; 133-a first clasp; 134-heat dissipation holes; 14-face ring; 141-hook; 142-a second clasp;

21-a driver; 211-a capacitor; 212-a wireless signal receiver; 22-LED light source; 221-COB chip; 23-COB racks; 231-a through hole; 24-a heat sink; 25-a thermally conductive pad;

30-a lens; 31-a light modulator; 32-a receiving groove; 331-a light reflecting structure; 332-radial line; 333-weft; 34-a light-emitting surface; 341-diffusion structure; 351-a positioning groove; 36-a convex ring; 361-grain.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the 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.

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 limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model discloses a translation that the professional term english is abbreviated as follows:

COB Light source (Chip On Board Light);

a Light Emitting Diode (LED for short).

In the utility model, the light-emitting end of the LED tube spotlight is the front end or the front side; the other end is the back end or the back surface.

Referring to fig. 1 to 4, an LED tube spotlight 100 provided by the present invention will now be described. The LED spotlight 100 comprises a lamp body 11, a power head 12, a rear cover 13, an LED light source 22, a heat dissipation plate 24, a heat conduction pad 25 and a driver 21; the lamp body 11 has a cylindrical structure, and heat can be dissipated through the lamp body 11. One end of the power source head 12 extends into the lamp body 11, and the power source head 12 is electrically connected to the driver 21, and the power source head 12 is used for connecting an external power source. The rear cover 13 covers the rear end of the lamp body 11 to protect the devices in the lamp body 11. The LED light source 22 is used for emitting light; the driver 21 is electrically connected to the LED light source 22 to drive the LED light source 22 to operate. The heat dissipation plate 24 is used for dissipating heat of the LED light source 22; the heat dissipation plate 24 is installed in the lamp body 11 in a matching manner, and the heat dissipation plate 24 respectively divides the space in the lamp body 11 into the front cavity 112 and the rear cavity 111 so as to reduce the thermal influence between the front cavity 112 and the rear cavity 111; the LED light source 22 is installed in the front cavity 112, and the driver 21 is disposed in the rear cavity 111, thereby reducing the thermal influence of the LED light source 22 on the driver 21; the heat conducting pad 25 is arranged between the heat dissipation plate 24 and the LED light source 22, and two surfaces of the heat conducting pad 25 are respectively attached to the heat dissipation plate 24 and the LED light source 22, so that heat generated by the LED light source 22 can be conducted to the heat dissipation plate 24 through the heat conducting pad 25 in time to be dissipated, and the heat dissipation efficiency is improved; in addition, the driver 21 is fixed on the rear cover 13, so that the driver 21 is far away from the LED light source 22, the thermal influence of the LED light source 22 on the driver 21 is further reduced, and the service life is prolonged; and when assembling, the driver 21 can be fixed on the back cover 13 and then installed at the back end of the lamp body 11, so that the assembly is more convenient.

Compared with the prior art, the LED barrel spotlight 100 provided by the utility model has the advantages that the heat dissipation plate 24 is arranged in the lamp body 11 to separate the space in the lamp body 11 into the front cavity 112 and the rear cavity 111, the LED light source 22 is arranged in the front cavity 112, and the driver 21 is arranged in the rear cavity 111 to isolate the influence of the heat generated by the LED light source 22 on the driver 21; meanwhile, the driver 21 is fixed on the rear cover 13 to be far away from the LED light source 22 in the front cavity 112, so that the thermal influence of the LED light source 22 on the driver 21 is further reduced, and the service life is prolonged; meanwhile, when the lamp is assembled, the driver 21 and the rear cover 13 can be fixed and then installed on the lamp body 11, and the assembly is more convenient.

Further, referring to fig. 1 to 4, as a specific embodiment of the LED tube lamp 100 provided by the present invention, the driving circuit in the driver 21 may be a linear driving circuit to ensure stable operation of the LED light source 22.

Further, referring to fig. 2 to 4, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, a baffle 131 is convexly disposed on an inner surface of the rear cover 13, the baffle 131 forms an accommodating cavity 132, and the driver 21 is installed in the accommodating cavity 132. This structure can facilitate the installation of the driver 21 and protect the driver 21 by the barrier 131.

Further, referring to fig. 2 to 4, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the rear cover 13 is a plastic cover, so as to reduce the cost and facilitate the manufacturing process.

Further, please refer to fig. 3 to fig. 6, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the rear end of the lamp body 11 is provided with a first ring-shaped slot 116, and the rear cover 13 is provided with a plurality of first fasteners 133 that are engaged with the first ring-shaped slot 116. To facilitate attachment of the lamp body 11 to the rear cover 13 cartridge.

Further, referring to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, a capacitor 211 for adjusting the stroboscopic degree is disposed in the driver 21. The capacitor 211 is arranged in the driver 21, so that the light emitting stroboflash degree of the LED light source 22 can be better adjusted, and the stroboflash-free requirement is met.

Further, referring to fig. 3 to fig. 5, as an embodiment of the LED tube spotlight 100 provided by the present invention, a wireless signal receiver 212 is disposed in the driver 21. The wireless signal receiver 212 may be an antenna module or a bluetooth module to implement wireless control.

Further, referring to fig. 2 to fig. 4, as a specific embodiment of the LED tube lamp 100 provided by the present invention, the driving circuit in the driver 21 may be a linear driving circuit to ensure stable operation of the LED light source 22.

Further, please refer to fig. 2 to 4, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the LED light source 22 is a COB light source, the LED tube spotlight 100 further includes a COB support 23, the COB support 23 exposes the through hole 231 of the COB chip 221 of the COB light source, and the COB support 23 is installed on the heat dissipation plate 24. The COB light source is used, so that high power can be better realized, and higher illumination brightness can be realized. Set up COB support 23, installation that can be better and fixed COB light source to play protection COB chip 221, prevent when the installation, crush COB chip 221. Of course, in other embodiments, the LED light source 22 may also be an LED patch light source. Further, can adopt high-pressure COB chip 221, through the arrangement of the inside chip of adjustment COB, divide into several sections with the lamp pearl, adjust chip quantity according to the commercial power, combine linear drive again, segmentation constant current output control, control is convenient.

Further, please refer to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the LED tube spotlight 100 further includes a lens 30 for dimming, the lens 30 is installed at the front end of the lamp body 11, and the lens 30 is installed to adjust the light conveniently, so as to adjust the light emitting angle conveniently. Of course, in some embodiments, a reflector cup may also be used for dimming.

Further, please refer to fig. 7 to fig. 9, as a specific embodiment of the LED tube spotlight 100 according to the present invention, the lens 30 includes a cup-shaped light-adjusting body 31, a front end surface of the light-adjusting body 31 is a light-emitting surface 34, and a protruding ring 36 protruding outward from a periphery of a front end of the light-adjusting body 31 for facilitating installation and fixation; the rear end of the light adjuster 31 is provided with an accommodating groove 32 for the light source to be arranged in, so that the light source is arranged in the accommodating groove 32, more light emitted by the light source can enter the light adjuster 31, and the light adjuster 31 adjusts the light, thereby improving the light utilization rate. The side surface 33 of the light modulator 31 is provided with a plurality of light reflecting structures 331 for reflecting light emitted from the side wall of the accommodating groove 32 to the side surface 33 toward the light emitting surface 34. The light reflecting structure 331 is disposed on the side surface 33 of the light modulator 31, so as to better reflect light from the light emitting surface 34, adjust the light emitting angle, reduce light leakage, and improve the light mixing effect. The light entering from the side wall 322 of the accommodating groove 32 can irradiate the side surface 33 of the light adjuster 31 and be reflected by the side surface 33 of the light adjuster 31, and the light entering from the bottom 321 of the accommodating groove 32 is directly emitted from the light emitting surface 34.

Further, please refer to fig. 7 to fig. 9, as a specific embodiment of the LED tube spotlight 100 according to the present invention, the plurality of light reflecting structures 331 are in a grid shape, that is, the light reflecting structures 331 are combined to form a grid shape; each light reflecting structure 331 is planar to improve the light utilization rate and facilitate the manufacturing.

Further, referring to fig. 7 to 9, as an embodiment of the LED tube spotlight 100 according to the present invention, a plurality of radial lines 332 extending along the axial direction of the light adjuster 31 and a plurality of weft lines 333 surrounding the axial direction of the light adjuster 31 are disposed on the side surface 33 of the light adjuster 31, and a light reflecting structure 331 is formed between two adjacent radial lines 332 and two adjacent weft lines 333. So as to facilitate the manufacturing, and at the same time, the light reflecting structures 331 are the same at the same axial position of the light adjuster 31. Preferably, the radial lines 332 are annularly arrayed on the side surface 33 of the light modulator 31, and the distance between two adjacent radial lines 332 is equal, so that the light reflection is more uniform.

Further, please refer to fig. 7 to 9, as a specific embodiment of the LED tube spotlight 100 of the present invention, the edge of the cross section of the light-adjusting body 31 is arc-shaped, and the diameter of the side surface 33 of the light-adjusting body 31 is gradually enlarged from the rear end to the front end of the light-adjusting body 31, which not only facilitates the processing and manufacturing, but also facilitates the reflection of light to the light-emitting surface 34.

Further, please refer to fig. 7 to 9, which are specific embodiments of the LED tube lamp 100 according to the present invention, the bottom 321 of the accommodating groove 32 is a spherical surface protruding from the middle portion to focus light, so that the light emitted from the bottom 321 of the accommodating groove 32 can be better focused, and the light can be better emitted from the light emitting surface 34 corresponding to the position of the accommodating groove 32.

Further, please refer to fig. 7 to 9, as a specific embodiment of the LED tube spotlight 100 according to the present invention, a plurality of diffusion structures 341 for uniformly diffusing light are disposed on the light emitting surface 34 opposite to the accommodating groove 32, and the diffusion structures 341 are disposed to make the emitted light more uniformly mixed.

Further, please refer to fig. 7 to 9, as a specific embodiment of the LED tube spotlight 100 of the present invention, each diffusion structure 341 is a spherical surface with a convex middle portion, so as to better diffuse light and make the light emitted more uniform.

Further, referring to fig. 7 to 9, as a specific embodiment of the LED tube spotlight 100 of the present invention, the light emitting surface 34 is a curved surface extending forward from inside to outside in the region 342 outside the plurality of diffusion structures 341, and the light emitting angle can be better adjusted by the curved surface.

Further, please refer to fig. 7 to 9, as a specific embodiment of the LED tube spotlight 100 of the present invention, the rear end surface 35 of the light adjuster 31 is planar, and the accommodating groove 32 is located in the middle of the rear end surface 35 to support the light adjuster 31 conveniently.

Further, referring to fig. 7 to 9, as an embodiment of the LED tube spotlight 100 of the present invention, the rear end surface 35 of the light adjuster 31 is provided with positioning grooves 351 on two sides of the accommodating groove 32 for facilitating installation and positioning.

Further, referring to fig. 7 to 9, as an embodiment of the LED tube lamp 100 of the present invention, the diameter of the accommodating groove 32 gradually increases from the front end to the rear end of the light-adjusting body 31, so that the light emitted from the sidewall 322 of the accommodating groove 32 can better irradiate onto the side surface 33 of the light-adjusting body 31.

Further, please refer to fig. 7 to 9, as a specific embodiment of the LED tube lamp 100 of the present invention, a plurality of lines 361 are disposed on the rear side surface of the protruding ring 36 for easy installation and fixation, and at the same time, a good light reflection effect can be achieved.

Further, referring to fig. 7 to 9, as an embodiment of the LED tube spotlight 100 of the present invention, a reflective layer (not shown) covers the side surface 33 of the light adjuster 31 to improve the light output.

Further, referring to fig. 3 to 5, as an embodiment of the LED tube spotlight 100 provided by the present invention, the LED tube spotlight 100 further includes a surface ring 14 supporting the lens 30, and the surface ring 14 is installed at the front end of the lamp body 11. The face ring 14 is provided to facilitate mounting of the fixed lens 30. In some embodiments, if a reflective cup is used, the reflective cup is supported on the face ring 14.

Further, please refer to fig. 3, fig. 4 and fig. 6, as a specific embodiment of the LED barrel spotlight 100 provided by the present invention, a plurality of heat dissipation holes 134 are formed on the rear cover 13 for facilitating heat dissipation.

Further, referring to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, a side of the lamp body 11 is provided with a notch 114 extending from the end of the power source head 12, so as to facilitate the insertion of the power source head 12.

Further, please refer to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the lamp body 11 is a metal shell, so as to facilitate heat dissipation and improve heat dissipation efficiency.

Further, referring to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the surface ring 14 is provided with a plurality of hooks 141 for engaging with the lens 30 or the edge of the reflective cup, so that when assembling, the lens 30 can be mounted on the surface ring 14, and then the surface ring 14 is engaged with the lamp body 11, i.e. the lens 30 can be mounted in the lamp body 11.

Further, please refer to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, the front end of the lamp body 11 is provided with a second annular clamping groove 115, and the surface ring 14 is provided with a plurality of second fasteners 142 that are engaged into the second annular clamping groove 115, so that the surface ring 14 and the lamp body 11 can be fixedly connected by a snap connection.

Further, referring to fig. 3 to fig. 5, as a specific embodiment of the LED tube spotlight 100 provided by the present invention, a plurality of supporting columns 113 are disposed in the lamp body 11, and the heat dissipation plate 24 is fixedly connected to the supporting columns 113. Support columns 113 are provided in the lamp body 11 to support and fix the heat dissipation plate 24.

In the LED barrel spotlight 100 of the present invention, the driver 21 can be isolated or not isolated; the input can be single or wide. The LED tube spotlight has the advantages of high PF (power factor), low THD (total harmonic distortion, LED tube spotlight 100), capability of meeting the requirements of different markets and certifications, no stroboflash, multiple functions, long service life and low cost. And can realize larger power and high luminous flux.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

The LED barrel-shaped spotlight comprises a lamp body, a power source head, an LED light source and a drive, wherein the lamp body is arranged in a barrel shape, the power source head is used for being connected with an external power supply, the LED light source is used for emitting light, the driver and the cover are arranged at the rear end of the lamp body, one end of the power source head stretches into the lamp body, the power source head is electrically connected with the driver, and the LED barrel-shaped spotlight is characterized in that: the LED barrel spotlight further comprises a heat dissipation plate and a heat conduction pad, the heat dissipation plate is used for dissipating heat of the LED light source, the heat conduction pad is attached to the heat dissipation plate, the heat dissipation plate is installed in the lamp body in a matched mode, the space in the lamp body is respectively provided with a front cavity and a rear cavity, the LED light source is installed in the front cavity, the heat conduction pad is connected with the LED light source in an attached mode, the driver is fixed on the rear cover, and the driver is arranged in the rear cavity.
2. The LED barrel spotlight of claim 1, wherein: the inner surface of the rear cover is convexly provided with a baffle plate, the baffle plate surrounds an accommodating cavity, and the driver is installed in the accommodating cavity.
3. The LED barrel spotlight of claim 2, wherein: the rear cover is a plastic cover.
4. The LED barrel spotlight of claim 3, wherein: and a capacitor for adjusting the stroboscopic degree is arranged in the driver.
5. The LED barrel spotlight of claim 3, wherein: the driver is provided with a wireless signal receiver.
6. The LED barrel spotlight according to any one of claims 1 to 5, wherein: the LED light source is the COB light source, LED section of thick bamboo shot-light still includes the COB support, expose on the COB support the through-hole of the COB chip of COB light source, COB support mounting in on the heating panel.
7. The LED barrel spotlight according to any one of claims 1 to 5, wherein: the LED barrel spotlight further comprises a lens or a reflecting cup for dimming, and the lens or the reflecting cup is arranged at the front end of the lamp body.
8. The LED barrel spotlight of claim 7, wherein: the LED barrel spotlight further comprises a face ring supporting the lens or the reflecting cup, and the face ring is mounted at the front end of the lamp body.
9. The LED barrel spotlight of claim 8, wherein: the surface ring is provided with a plurality of clamping hooks for clamping the lens or the edge of the reflecting cup.
10. The LED barrel spotlight according to any one of claims 1 to 5, wherein: the lamp body is internally provided with a plurality of supporting columns, and the heat dissipation plate is fixedly connected with the supporting columns.