Efficient heat dissipation down lamp
By designing a heat dissipation shell with multiple heat dissipation slots in the downlight, the problem of insufficient heat dissipation efficiency of the existing downlight is solved, more efficient heat export and heat dissipation are achieved, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202421630735.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-10
AI Technical Summary
Existing downlights have shortcomings in efficient heat dissipation, especially the heat dissipation effect of high-power light source boards, which leads to the light source board being easily overheated when working, affecting normal work.
An efficient heat dissipation downlight is designed, using a heat dissipation shell with multiple heat dissipation grooves to install the light source plate in the heat dissipation shell, use the heat dissipation groove to increase the heat conduction area, and accelerate heat dissipation through the sides of the heat dissipation shell.
By adding the design of the heat dissipation tank, the heat dissipation efficiency of the downlight is significantly improved, ensuring that the light source plate can maintain stable operation under high load conditions, and extending the service life of the downlight.
Smart Images
Figure CN222963907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lighting device, in particular to a high-efficiency heat dissipation downlight. Background Art
[0002] When a downlight is working, the light source board inside it will generate a large amount of heat, and it is necessary to dissipate the heat of the light source board in time to avoid affecting the normal operation of the light source board. In order to accelerate the heat dissipation of the light source board, a metal heat dissipation board is currently added to the back of the light source board. The heat dissipation board made of metal can accelerate the outward conduction of the heat of the light source board, but the improved heat dissipation efficiency is limited, and it still cannot meet the use requirements for high-power light source boards. Therefore, there is an urgent need for a downlight with better heat dissipation effect. Content of the Utility Model
[0003] The purpose of the utility model is to provide a high-efficiency heat dissipation downlight to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or creation condition.
[0004] The solution of the utility model to solve its technical problems is as follows:
[0005] A high-efficiency heat dissipation downlight, comprising: a housing, which encloses a cavity with an opening downward inside; a heat dissipation shell, connected inside the cavity, the heat dissipation shell encloses a heat dissipation cavity with an opening downward inside, the top surface of the heat dissipation shell is provided with heat dissipation grooves, and a plurality of heat dissipation grooves are arranged side by side; a light source board, connected to the bottom surface of the heat dissipation cavity; a light-transmitting board, connected inside the cavity, and the light-transmitting board is located below the light source board.
[0006] This technical solution has at least the following beneficial effects: The light source board is installed inside the heat dissipation shell, and when working, the light source board emits light downward through the light-transmitting board. The heat generated by the light source board is transferred upward to the heat dissipation shell. Since the top surface of the heat dissipation shell is provided with a plurality of heat dissipation grooves, the use of the plurality of heat dissipation grooves can increase the heat conduction area of the heat dissipation shell outward, thereby improving the heat conduction efficiency of the light source board. In addition, when the heat generated by the light source board is transferred to the heat dissipation shell, the heat can also be transferred to the side surface other than the heat dissipation grooves, thereby accelerating the outward dissipation of heat. Therefore, the utility model improves the heat dissipation efficiency of the downlight by adding a heat dissipation shell with heat dissipation grooves, which is beneficial for the downlight to maintain stable operation and improve the service life of the downlight.
[0007] As a further improvement of the above technical solution, a plurality of spaced heat dissipation ribs are formed by the top surface of the heat dissipation shell protruding downward, and a plurality of the heat dissipation grooves are respectively arranged on the top sides of the heat dissipation ribs, and the light source board is connected to the bottom sides of the plurality of heat dissipation ribs. When the top surface of the heat dissipation shell protrudes downward to form heat dissipation ribs, heat dissipation grooves are formed inside the protruding heat dissipation ribs. At this time, the shape of the top surface of the heat dissipation shell is tortuous, increasing the contact area with the air. And the bottom sides of the plurality of heat dissipation ribs protruding downward form a connection surface for heat dissipation support, and the light source board is installed on this connection surface. During operation, heat can be directly transferred upward to the heat dissipation ribs, and the overall heat dissipation efficiency can be improved by using the heat dissipation grooves.
[0008] As a further improvement of the above technical solution, a clamping block is connected to the top of the cavity, and a notch for avoiding the clamping block is arranged on the outer side of the heat dissipation shell. The clamping block presses the light source board against the bottom sides of the plurality of heat dissipation ribs. During overall assembly, align the notch on the outer side of the heat dissipation shell with the clamping block inside the housing, and then assemble the two with each other. At this time, the clamping block inside the housing extends into the heat dissipation shell, and the light source board is installed on the inner bottom side of the heat dissipation cavity. By pressing the light source board with the clamping block, the light source board can be tightly pressed against the bottom sides of the heat dissipation ribs for fixation.
[0009] As a further improvement of the above technical solution, two fixing ribs are connected to the inner side of the cavity at intervals, a connecting rib is connected between the two fixing ribs, the bottom side of the clamping block is connected to the connecting rib, and there is a gap between the clamping block and the inner side of the cavity. The two fixing ribs and the connecting rib connected between the two fixing ribs form a framework, and the clamping block is connected to this framework. The clamping block can elastically deform around its position connected to the connecting rib, and there is a gap between the clamping block and the inner side of the cavity, which can reduce the friction during the elastic deformation of the clamping block. Thus, when installing the light source board, the light source board can squeeze the clamping block outward, causing the clamping block to elastically deform and avoid the light source board. When the light source board is installed in place, the clamping block elastically resets and presses the light source board upward tightly.
[0010] As a further improvement of the above technical solution, the side of the clamping block close to the center of the heat dissipation shell extends obliquely upward in the direction close to the center of the heat dissipation shell. When installing the light source board into the heat dissipation cavity, the side of the light source board abuts against the inclined side of the clamping block. As the light source board is pressed upward, the clamping block can also be squeezed outward, making it easier to install and snap the light source board. In this way, the convenience of installing the light source board is improved.
[0011] As another improvement of the above technical solution, the shape of the top surface of the heat dissipation shell is wavy, and the troughs on the top side of the heat dissipation shell are the heat dissipation grooves. At this time, the shape of the top surface of the heat dissipation shell is wavy, and heat dissipation grooves are formed at the positions of the troughs that are concave downward in the wavy shape to form a structure for improving the heat dissipation efficiency.
[0012] As a further improvement of the above technical solution, a connecting spring is connected to the outside of the housing. At least two connecting springs are arranged around the housing, and a positioning shoulder is arranged around the bottom side of the housing. When the whole needs to be installed on the ceiling, the positioning shoulder on the bottom side of the housing is abutted against the top side of the ceiling, and the whole housing is inserted upward into the ceiling. By using the connecting springs on both sides of the housing to abut against the ceiling, the housing can be tightened and positioned on the ceiling.
[0013] As a further improvement of the above technical solution, two clamping seats are connected to the inside of the housing. Steps for avoiding the clamping seats are arranged at positions on the outside of the heat dissipation housing opposite to the two clamping seats, and the two springs pass through the side wall of the housing and are respectively connected to the two clamping seats. A clamping seat for clamping the connecting spring is connected inside the housing. At this time, the heat dissipation housing is provided with steps corresponding to the positions of the clamping seats, so as to avoid the positions of the clamping seats, making the overall structure more compact. When installing the connecting spring, the connecting spring can be passed through the housing and inserted into the clamping seat.
[0014] As a further improvement of the above technical solution, the top side and the outside of the heat dissipation housing are both abutted against the inside of the cavity. The heat conducted to the heat dissipation housing can be directly transferred to the housing, further improving the heat dissipation efficiency to the outside.
[0015] As a further improvement of the above technical solution, an annular clamping groove is arranged in the cavity, and the light-transmitting plate is clamped in the annular clamping groove. When installing the light-transmitting plate, the light-transmitting plate is directly installed into the cavity, and by using the side of the light-transmitting plate to be clamped in the annular clamping groove, the cavity can be quickly clamped and positioned. Description of the Drawings
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, not all embodiments. Without creative work, those skilled in the art can also obtain other design solutions and drawings based on these drawings.
[0017] Figure 1 It is a three-dimensional view of the light-transmitting plate, heat dissipation housing and housing of the present invention separated from each other.
[0018] Figure 2 It is a three-dimensional view of the housing of the present invention.
[0019] Figure 3 It is a front view of the whole of the present invention.
[0020] Figure 4 is Figure 3 Schematic cross-sectional structure diagram of A-A of
[0021] In the accompanying drawings: 100 - housing, 110 - clamping block, 121 - fixing rib, 122 - connecting rib, 130 - positioning shoulder, 140 - clamping seat, 200 - heat dissipation shell, 210 - heat dissipation groove, 220 - step, 300 - light source board, 400 - light transmissive board, 500 - connecting spring. Detailed implementation manners
[0022] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.
[0023] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0024] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0025] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.
[0026] Refer to Figure 1 、 Figure 3 And Figure 4, An efficient heat dissipation downlight, including a housing 100, a heat dissipation housing 200, a light source board 300 and a light-transmitting board 400. Among them, a cavity with a downward opening is formed inside the housing 100; the heat dissipation housing 200 is connected inside the cavity. A heat dissipation cavity with a downward opening is formed inside the heat dissipation housing 200. A heat dissipation groove 210 is provided on the top surface of the heat dissipation housing 200, and a plurality of heat dissipation grooves 210 are arranged side by side; the light source board 300 is connected to the bottom surface of the heat dissipation cavity. Usually, one or more lamp beads are provided on the bottom surface of the light source board 300 for emitting light outward; the light-transmitting board 400 is connected inside the cavity. The light-transmitting board 400 is located below the light source board 300. In practical applications, the light-transmitting board 400 can be a frosted board, which can improve the uniformity of light emission.
[0027] As can be seen from the above, the light source board 300 is installed inside the heat dissipation housing 200, and the light source board 300 is installed inside the heat dissipation housing 200. During operation, the light source board 300 emits light downward through the light-transmitting board 400. The heat generated by the light source board 300 is transferred upward to the heat dissipation housing 200. Since a plurality of heat dissipation grooves 210 are provided on the top surface of the heat dissipation housing 200, the use of the plurality of heat dissipation grooves 210 can increase the heat conduction area of the heat dissipation housing 200 to the outside, thereby improving the heat conduction efficiency of the light source board 300. In addition, when the heat generated by the light source board 300 is transferred to the heat dissipation housing 200, the heat can also be transferred to the side surface other than the heat dissipation groove 210, thereby accelerating the heat dissipation to the outside. Therefore, the present utility model improves the heat dissipation efficiency of the downlight by adding a heat dissipation housing 200 with heat dissipation grooves 210, which is beneficial for the downlight to maintain stable operation and improve the service life of the downlight.
[0028] There are various structural forms of the heat dissipation groove 210 formed on the heat dissipation housing 200. In the first embodiment, a plurality of spaced heat dissipation ribs are formed by the top surface of the heat dissipation housing 200 protruding downward. A plurality of the heat dissipation grooves 210 are respectively provided on the top side of the heat dissipation ribs. The light source board 300 is connected to the bottom side of the plurality of heat dissipation ribs. In practical applications, a plurality of heat dissipation grooves 210 all extend in a straight line direction, and both ends thereof extend to both sides of the heat dissipation housing 200. When the top surface of the heat dissipation housing 200 protrudes downward to form heat dissipation ribs, the inside of the protruding heat dissipation ribs forms a heat dissipation groove 210. At this time, the top surface shape of the heat dissipation housing 200 is tortuous, increasing the contact area with the air. And the bottom side of the downward protrusion of the plurality of heat dissipation ribs forms a connection surface for heat dissipation support. The light source board 300 is installed on this connection surface. During operation, the heat can be directly transferred upward to the heat dissipation ribs, and the use of the heat dissipation groove 210 can improve the overall heat dissipation efficiency.
[0029] There are various structural forms for installing the light source board 300 on the heat dissipation housing 200. For example, the light source board 300 can be directly clamped inside the heat dissipation housing 200, or the light source board 300 can be fixed inside the heat dissipation housing 200 by screw connection. In order to improve the structural stability of the connection between the outer housing 100, the heat dissipation housing 200 and the clamping block 110, in this embodiment, a clamping block 110 is connected to the top of the cavity, and a notch for avoiding the clamping block 110 is provided on the outer side of the heat dissipation housing 200. The clamping block 110 presses the light source board 300 against the bottom sides of multiple heat dissipation ribs. During overall assembly, the notch on the outer side of the heat dissipation housing 200 is aligned with the clamping block 110 inside the outer housing 100, and then the two are assembled with each other. At this time, the clamping block 110 inside the outer housing 100 extends into the heat dissipation housing 200, and the light source board 300 is installed on the inner bottom side of the heat dissipation cavity. By pressing the light source board 300 by the clamping block 110, the light source board 300 can be tightly pressed against the bottom sides of the heat dissipation ribs for fixation.
[0030] In practical applications, the number of clamping blocks 110 can be multiple, such as two or three. Specifically, when there are two clamping blocks 110, two notches for avoiding the clamping blocks 110 are also provided on the outer side of the heat dissipation housing 200. At this time, the two clamping blocks 110 are respectively located on both sides of the light source board 300, and the light source board 300 is pressed upward and fixed.
[0031] When the clamping block 110 is a directly protruding structure in the cavity, it is relatively difficult to move the light source board 300 upward past the clamping block 110 to utilize the clamping block 110 for its pressing and positioning, and it is necessary to rely on the elastic deformation of the light source board 300 to avoid the clamping block 110. In order to improve the convenience of installing the light source board 300, as Figure 2 shown, in this embodiment, two fixing ribs 121 are connected at intervals on the inner side of the cavity, a connecting rib 122 is connected between the two fixing ribs 121, the bottom side of the clamping block 110 is connected to the connecting rib 122, and there is a gap between the clamping block 110 and the inner side of the cavity. The two fixing ribs 121 and the connecting rib 122 connected between the two fixing ribs 121 form a framework, and the clamping block 110 is connected to this framework. The clamping block 110 can elastically deform around its position connected to the connecting rib 122, and there is a gap between the clamping block 110 and the inner side of the cavity, which can reduce the friction during the elastic deformation of the clamping block 110. Thus, when installing the light source board 300, the light source board 300 can squeeze the clamping block 110 outward, causing the clamping block 110 to elastically deform and avoid the light source board 300. When the light source board 300 is installed in place, the clamping block 110 elastically resets and presses the light source board 300 upward tightly.
[0032] Further, the side of the clamping block 110 close to the center of the heat dissipation housing 200 extends obliquely upward in a direction close to the center of the heat dissipation housing 200. When the light source board 300 is inserted into the heat dissipation cavity, the side of the light source board 300 abuts against the inclined side of the clamping block 110. As the light source board 300 is pressed upward, the clamping block 110 can also be extruded outward, making it easier to install and snap the light source board 300, thus improving the convenience of installing the light source board 300.
[0033] As another improvement to the formation of the heat dissipation groove 210 on the top surface of the heat dissipation housing 200, in the second embodiment, the shape of the top surface of the heat dissipation housing 200 is wavy, and the trough on the top side of the heat dissipation housing 200 is the heat dissipation groove 210. At this time, the shape of the top surface of the heat dissipation housing 200 is wavy, and the heat dissipation groove 210 is formed at the position of the trough that is concave downward in the wavy shape to form a structure for improving the heat dissipation efficiency. Similarly, a heat dissipation surface is formed at the positions of multiple troughs that are concave downward on the top side of the heat dissipation housing 200. When installing the light source board 300, the light source board 300 is abutted against this heat dissipation surface to improve the effect of quickly conducting heat to the light source board 300.
[0034] In order to facilitate the installation and fixation of the outer shell 100, in this embodiment, a connecting spring 500 is connected to the outside of the outer shell 100. At least two, for example, two connecting springs 500 are arranged around the outer shell 100. The connecting spring 500 has two torsion arms. One torsion arm is connected to the outer shell 100, and the other torsion arm is connected with a pressing piece. After the connecting spring 500 is installed on the outer shell 100, a torsion force will be generated on the connecting spring 500, making the pressing piece tend to rotate and approach the center of the outer shell 100. A positioning shoulder 130 is arranged around the bottom side of the outer shell 100. When it is necessary to install the whole on the ceiling, the positioning shoulder 130 on the bottom side of the outer shell 100 is abutted against the top side of the ceiling, and the whole outer shell 100 is inserted upward into the ceiling. By using the connecting springs 500 on both sides of the outer shell 100 to abut against the ceiling, the outer shell 100 can be tightened and positioned on the ceiling.
[0035] The torsion arm on the connecting spring 500 can be directly fixed to the outer shell 100. In order to facilitate the installation and connection of the connecting spring 500, in this embodiment, two clamping seats 140 are connected to the inside of the outer shell 100. Steps 220 for avoiding the clamping seats 140 are arranged at positions on the outside of the heat dissipation housing 200 opposite to the two clamping seats 140. The two springs pass through the side wall of the outer shell 100 and are respectively connected to the two clamping seats 140. A clamping seat 140 for clamping the connecting spring 500 is connected inside the outer shell 100. At this time, the heat dissipation housing 200 is provided with steps 220 corresponding to the positions of the clamping seats 140 to avoid the positions of the clamping seats 140, making the overall structure more compact. When installing the connecting spring 500, the connecting spring 500 is passed through the outer shell 100 and inserted into the clamping seat 140.
[0036] In the above embodiments, when the heat dissipation shell 200 is installed in the cavity, it can be connected and fixed to the cavity only by relying on the top side or the outer side of the heat dissipation shell 200. However, in this embodiment, both the top side and the outer side of the heat dissipation shell 200 are abutted against the inner side of the cavity. The heat conducted to the heat dissipation shell 200 can be directly transferred to the outer shell 100, further improving the efficiency of heat dissipation to the outside.
[0037] In order to facilitate the installation of the light-transmitting plate 400, in this embodiment, an annular card slot is provided in the cavity, and the light-transmitting plate 400 is snap-fitted into the annular card slot. When installing the light-transmitting plate 400, directly insert the light-transmitting plate 400 into the cavity, and use the side edge of the light-transmitting plate 400 to be snap-fitted into the annular card slot, then the cavity can be quickly snap-fitted and positioned. In practical applications, chamfered corners can be provided at the bottom side corners of the notch of the annular card slot. When installing the light-transmitting plate 400 in the annular card slot, the light-transmitting plate 400 can be conveniently pushed into the annular card slot along the bottom side corners of the chamfered corners of the notch of the annular card slot, improving the installation efficiency of the light-transmitting plate 400.
[0038] In addition, in practical applications, holes are respectively provided on the outer shell 100 and the heat dissipation shell 200. The external power cord can pass through the holes of the outer shell 100 and the holes of the heat dissipation shell 200 and extend into the heat dissipation cavity to be electrically connected to the light source board 300. In order to improve the sealing performance inside the heat dissipation shell 200, a waterproof sleeve is sleeved on the outer side of the inserted power cord, and the waterproof sleeve is tightly pressed in the holes of the outer shell 100 and the holes of the heat dissipation shell 200, so that moisture in the air is not easily introduced into the heat dissipation shell 200.
[0039] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A high-efficiency heat dissipation downlight, characterized by: include: The housing (100) has a cavity formed inside thereof and opening downward; A heat dissipation shell (200) is connected to the cavity, a heat dissipation cavity with a downward opening is formed inside the heat dissipation shell (200), a heat dissipation groove (210) is arranged on the top surface of the heat dissipation shell (200), and a plurality of the heat dissipation grooves (210) are arranged side by side; A light source plate (300) connected to the bottom surface of the heat dissipation cavity; A light-transmitting plate (400) is connected to the cavity, and the light-transmitting plate (400) is located below the light source plate (300).
2. According to claim 1, a high-efficiency heat dissipation downlight, characterized in that: The top surface of the heat dissipation shell (200) is convex downward to form a plurality of heat dissipation ribs arranged at intervals, the plurality of heat dissipation grooves (210) are respectively arranged on the top sides of the heat dissipation ribs, and the light source board (300) is connected to the bottom sides of the plurality of heat dissipation ribs.
3. The high-efficiency heat dissipation downlight according to claim 2, characterized in that: A clamping block (110) is connected to the top of the cavity, a notch is provided on the outside of the heat dissipation shell (200) to avoid the clamping block (110), and the clamping block (110) presses the light source board (300) against the bottom sides of the plurality of heat dissipation ribs.
4. The high-efficiency heat dissipation downlight according to claim 3, characterized in that: Two fixing ribs (121) are connected to the inner side of the cavity at intervals, a connecting rib (122) is connected between the two fixing ribs (121), the bottom side of the clamping block (110) is connected to the connecting rib (122), and a gap is provided between the clamping block (110) and the inner side of the cavity.
5. The high-efficiency heat dissipation downlight according to claim 4, characterized in that: A side surface of the block (110) close to the center of the heat dissipation shell (200) extends obliquely upward in a direction close to the center of the heat dissipation shell (200).
6. The high-efficiency heat dissipation downlight according to claim 1, characterized in that: The top surface of the heat dissipation shell (200) is in a wave shape, and the wave valley on the top side of the heat dissipation shell (200) is the heat dissipation groove (210).
7. The high-efficiency heat dissipation downlight according to claim 1, characterized in that: The outer side of the housing (100) is connected to a connecting spring (500), at least two connecting springs (500) are arranged around the housing (100), and a positioning shoulder (130) is arranged around the bottom side of the housing (100).
8. The high-efficiency heat dissipation downlight according to claim 7, characterized in that: Two clamping seats (140) are connected to the inner side of the outer shell (100), and steps (220) for avoiding the clamping seats (140) are provided at positions on the outer side of the heat dissipation shell (200) facing the two clamping seats (140), and the two springs pass through the side wall of the outer shell (100) and are respectively connected to the two clamping seats (140).
9. The high-efficiency heat dissipation downlight according to claim 1, characterized in that: The top side of the heat dissipation shell (200) and the outer side of the heat dissipation shell (200) both abut against the inner side of the cavity.
10. The high-efficiency heat dissipation downlight according to claim 1, characterized in that: An annular slot is provided in the cavity, and the light-transmitting plate (400) is snap-fitted into the annular slot.