Heat dissipation structure of power supply cavity

Abstract

A heat dissipation structure of a power source cavity comprises a power source box shell cover, a heat dissipation body installed on the power source box shell cover, a power source fixed to the power source box shell cover, a bottom cover fixed to the bottom of the heat dissipation body and an LED lamp panel installed on the heat dissipation body, a first space is defined by the power source box shell cover and the heat dissipation body, and the power source is arranged in the first space. A second space is defined by the bottom cover and the heat dissipation body, and the LED lamp panel is arranged in the second space. The power supply box shell cover comprises a main body part and a plurality of first heat dissipation plates connected to the outer side face of the main body part, a first containing groove extending inwards and upwards is formed in the bottom of the main body part, and the power supply is arranged at the position, close to the top, in the first containing groove. The heat dissipation body comprises a connecting plate, a butt joint part connected to the upper end face of the connecting plate, and a plurality of second heat dissipation plates connected to the outer ring and the connecting plate at the same time. The LED lamp effectively solves the problem that heat dissipation of the power source is difficult, interference of heat generated by the LED lamp panel on the power source is reduced, practicability is high, and the service life of a product is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp structure, in particular to a power supply cavity heat dissipation structure. BACKGROUND

[0002] At present, the power supply of lamp products is mostly fixed at the bottom of the power supply box, or heat dissipation fins are added inside the power supply box, and then the power supply is fixed by padding. Because the bottom of the power supply box is close to the light source cavity, the heat generation of the LED light source is large, thereby causing the problem of excessively high temperature of the power supply, which affects the working performance of the power supply. During the use period of the lamp, it often manifests as the reduction of lamp brightness or even non-lighting. SUMMARY

[0003] Therefore, it is necessary to provide a power supply cavity heat dissipation structure aiming at the deficiencies in the prior art.

[0004] A power supply cavity heat dissipation structure, which comprises a power supply box shell cover, a heat dissipation body mounted on the power supply box shell cover, a sealing ring clamped between the heat dissipation body and the power supply box shell cover, a power supply fixed on the power supply box shell cover, a bottom cover fixed at the bottom of the heat dissipation body, and an LED lamp plate mounted on the heat dissipation body, wherein a first space is enclosed between the power supply box shell cover and the heat dissipation body, the power supply is arranged in the first space, a second space is enclosed between the bottom cover and the heat dissipation body, and the LED lamp plate is arranged in the second space; the power supply box shell cover comprises a main body portion and a plurality of first heat dissipation plates connected to the outer side surface of the main body portion, a first receiving groove extending inwardly and upwardly is arranged at the bottom of the main body portion, the power supply is arranged in the first receiving groove at a top position, the heat dissipation body comprises an outer ring, a connecting plate arranged on the inner side of the outer ring, an abutment portion connected to the upper end surface of the connecting plate, and a plurality of second heat dissipation plates connected to the outer ring and the connecting plate, and the abutment portion and the connecting plate are respectively abutted with the power supply box shell cover and the bottom cover.

[0005] In one of the embodiments, a second receiving groove extending downwardly from the upper end surface is arranged on the abutment portion, the slot opening of the first receiving groove and the slot opening of the second receiving groove are oppositely arranged, and the first receiving groove and the second receiving groove enclose the first space.

[0006] In one of the embodiments, a first abutment surface is formed at the outer periphery of the first receiving groove at the bottom of the main body portion, an embedding groove extending inwardly is arranged on the first abutment surface of the power supply box shell cover, a second abutment surface is formed at the outer periphery of the second receiving groove slot opening at the upper end surface of the abutment portion, the sealing ring is arranged in the embedding groove, and the second abutment surface presses and tightens the sealing ring.

[0007] In one of the embodiments, a first fixing hole extending inwardly from the top wall of the first receiving groove is further arranged on the main body portion, and the power supply cavity heat dissipation structure further comprises a plurality of first positioning members, the first positioning members pass through the power supply and are mounted and fixed on the first fixing hole.

[0008] In one of the embodiments, the connecting plate bottom is provided with a third receiving groove, and the second space is enclosed between the bottom cover and the third receiving groove.

[0009] In one of the embodiments, the connecting plate is provided with a second fixing hole extending inward at the position of the groove top wall of the third receiving groove, and the power cavity heat dissipation structure further comprises a plurality of second positioning members, the LED lamp plate is installed and fixed on the heat sink through the second positioning members, and during installation, the second positioning members pass through the LED lamp plate and are fixed in the second fixing hole.

[0010] In one of the embodiments, the connecting plate bottom surface is provided with a plurality of functional grooves at the outer periphery of the third receiving groove, the functional grooves are uniformly distributed, and the power cavity heat dissipation structure further comprises a plurality of third positioning members; during assembly, one end of the third positioning member is installed on the groove wall of the functional groove, and the other end of the third positioning member extends into the third receiving groove to limit the bottom cover.

[0011] In one of the embodiments, the first heat dissipation plates are distributed side by side, and the first heat dissipation plates are arranged in an inverted U shape and extend to both sides of the main body part.

[0012] In one of the embodiments, the second heat dissipation plates are uniformly distributed around the central axis of the outer ring.

[0013] The power cavity heat dissipation structure has the following beneficial effects: the first space is enclosed between the power box shell cover and the heat sink, the power supply is arranged in the first space, the second space is enclosed between the bottom cover and the heat sink, and the LED lamp plate is arranged in the second space. Furthermore, the first receiving groove is arranged on the power box shell cover, the power supply is arranged in the first receiving groove and located close to the top, the distance between the power supply and the LED lamp plate is increased, meanwhile, the first heat dissipation plate and the second heat dissipation plate are arranged on the power box shell cover and the heat sink respectively, the power supply and the LED lamp plate are respectively cooled by the first heat dissipation plate and the second heat dissipation plate, the problem of difficult heat dissipation of the power supply is effectively solved, the interference of the heat generated by the LED lamp plate on the power supply is reduced, the practicability is high, and the service life of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 、 Figure 2 It is a structural schematic diagram of the power cavity heat dissipation structure at different angles.

[0015] Figure 3 It is Figure 1 It is an exploded view of the power cavity heat dissipation structure.

[0016] Figure 4 It is a sectional view of the power cavity heat dissipation structure. DETAILED DESCRIPTION

[0017] In order to make the above object, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the spirit of the present application. Those skilled in the art will appreciate the scope of the present application and can make similar modifications without departing from the spirit of the present application. Therefore, the present application is not limited by the embodiments disclosed below.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0019] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0020] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0022] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0023] Please refer to Figures 1 to 4 The utility model provides a power supply cavity heat dissipation structure, including power box shell cover 10, install the heat sink 20 of power box shell cover 10, the sealing ring 60 of clamping between heat sink 20 and power box shell cover 10, the power supply 30 fixed on power box shell cover 10, the bottom cover 50 fixed at the bottom of heat sink 20, install LED lamp panel 40 on heat sink 20, first space 100 is enclosed between power box shell cover 10 and heat sink 20, the power supply 30 is arranged in first space 100, the bottom cover 50 is enclosed with heat sink 20 and forms second space 200, the LED lamp panel 40 is arranged in second space 200.

[0024] The power box shell cover 10 includes a main body portion 11, a plurality of first heat dissipation plates 12 connected to the outer side of the main body portion 11, the main body portion 11 is arranged in a substantially square shell structure, the bottom of the main body portion 11 is provided with a first receiving groove 111 extending inward and upward, the outer periphery of the first receiving groove 111 at the bottom of the main body portion 11 forms a first butt joint surface 112, the power box shell cover 10 is provided with an embedding groove 113 extending inward on the first butt joint surface 112, and the main body portion 11 is further provided with a first fixing hole extending inward from the groove top wall of the first receiving groove 111. The first heat dissipation plates 12 are arranged side by side, and the first heat dissipation plates 12 are arranged in an inverted U shape, and the first heat dissipation plates 12 extend to both sides of the main body portion 11. The utility model further comprises a plurality of first positioning members 71, in this embodiment, the first positioning members 71 are screws, the first positioning members 71 fix the power supply 30 on the power box shell cover 10, and during fixing, the first positioning members 71 pass through the power supply 30 and are fixed on the first fixing hole.

[0025] The heat sink 20 comprises an outer ring 21, a connecting plate 22 arranged inside the outer ring 21, a butt joint part 23 connected to the upper end face of the connecting plate 22, a plurality of second heat dissipation plates 24 connected to the outer ring 21 and the connecting plate 22, the butt joint part 23 and the connecting plate 22 butt joint the power box shell cover 10 and the bottom cover 50 respectively, the second heat dissipation plates 24 are uniformly and spacedly distributed around the central axis of the outer ring 21, the butt joint part 23 is provided with a second containing groove 231 extending downward from the upper end face, the upper end face of the butt joint part 23 forms a second butt joint surface 232 around the outer periphery of the second containing groove 231, the bottom of the connecting plate 22 is provided with a third containing groove 221, the groove side wall of the third containing groove 221 is in a stepped distribution, the connecting plate 22 is provided with a second fixing hole extending inward at the groove top wall position of the third containing groove 221, the bottom surface of the connecting plate 22 is provided with a plurality of function grooves 222 around the outer periphery of the third containing groove 221, the function grooves 222 are uniformly and spacedly distributed, and the utility model further comprises a plurality of second positioning members 72 and a plurality of third positioning members 73.

[0026] When assembled, the heat sink 20 and the power box shell cover 10 are locked and fixed by screws or other ways, the slot opening of the first containing groove 111 and the slot opening of the second containing groove 231 are oppositely arranged, the sealing ring 60 is arranged in the embedding groove 113, the second butt joint surface 232 presses the sealing ring 60 tightly, the first containing groove 111 and the second containing groove 231 form the first space 100, the LED lamp plate 40 is installed and fixed on the heat sink 20 through the second positioning member 72, when installed, the second positioning member 72 passes through the LED lamp plate and is fixed in the second fixing hole, one end of the third positioning member 73 is installed on the groove wall of the function groove 222 through the locking screw 74, the other end of the third positioning member 73 extends into the third containing groove 221 to limit the bottom cover 50, and the bottom cover 50 and the third containing groove 221 form the second space 200.

[0027] The power supply cavity heat dissipation structure has the advantages that: the first space 100 is formed between the power supply box shell cover 10 and the heat sink 20, the power supply 30 is arranged in the first space 100, the second space 200 is formed between the bottom cover 50 and the heat sink 20, and the LED lamp plate 40 is arranged in the second space 200; the first receiving groove 111 is arranged on the power supply box shell cover 10, the power supply 30 is arranged in the first receiving groove 111 and is close to the top position, the distance between the power supply 30 and the LED lamp plate 40 is increased, meanwhile, the first heat dissipation plate 12 and the second heat dissipation plate 24 are arranged on the power supply box shell cover 10 and the heat sink 20 respectively, the power supply 30 and the LED lamp plate 40 are respectively cooled by the first heat dissipation plate 12 and the second heat dissipation plate 24, the problem of difficult heat dissipation of the power supply 30 is effectively solved, the interference of the heat generated by the LED lamp plate 40 on the power supply 30 is reduced, the practicability is high, and the service life of the product is improved.

[0028] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0029] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, however, it should not be understood as the limitation of the scope of the present application. It should be pointed out that, for the ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A power cavity heat dissipation structure, characterized in that, The power box shell cover, the heat sink installed on the power box shell cover, the power supply fixed on the power box shell cover, the bottom cover fixed on the bottom of the heat sink, and the LED lamp plate installed on the heat sink are enclosed to form a first space between the power box shell cover and the heat sink, the power supply is arranged in the first space, the bottom cover and the heat sink are enclosed to form a second space, and the LED lamp plate is arranged in the second space.

2. The power cavity heat sink structure of claim 1, wherein, The power box shell cover comprises a main body portion, a plurality of first heat dissipation plates connected to the outer side surface of the main body portion, a first receiving groove extending inwardly and upwardly arranged at the bottom of the main body portion, and a power supply arranged in the first receiving groove and located close to the top portion.

3. The power cavity heat sink structure of claim 2, wherein, The heat sink comprises an outer ring, a connecting plate arranged on the inner side of the outer ring, a butt joint portion connected to the upper end surface of the connecting plate, and a plurality of second heat dissipation plates connected to the outer ring and the connecting plate.

4. The power cavity heat sink structure of claim 1, wherein, The butt joint portion is provided with a second receiving groove extending downwardly from the upper end surface, and the slot opening of the first receiving groove and the slot opening of the second receiving groove are arranged oppositely.

5. The power cavity heat sink structure of claim 1, wherein, The first receiving groove and the second receiving groove enclose the first space.

6. The power cavity heat sink structure of claim 5, wherein, The bottom of the main body portion is provided with a first butt joint surface formed around the slot opening of the first receiving groove, the power box shell cover is provided with an embedding groove extending inwardly on the first butt joint surface, the upper end surface of the butt joint portion is provided with a second butt joint surface formed around the slot opening of the second receiving groove, and the power supply cavity heat dissipation structure further comprises a sealing ring clamped between the heat sink and the power box shell cover.

7. The power cavity heat sink structure of claim 5, wherein, The sealing ring is arranged in the embedding groove, and the second butt joint surface presses the sealing ring.

8. The power cavity heat sink structure of claim 1, wherein, The main body portion is further provided with a first fixing hole extending inwardly from the top wall of the first receiving groove, and the power supply cavity heat dissipation structure further comprises a plurality of first positioning members.

9. The power cavity heat sink structure of claim 1, wherein, The first positioning members pass through the power supply and are fixed in the first fixing hole. The bottom of the connecting plate is provided with a third receiving groove, and the bottom cover and the third receiving groove enclose the second space. The connecting plate is provided with a second fixing hole extending inwardly at the top wall position of the third receiving groove, and the power supply cavity heat dissipation structure further comprises a plurality of second positioning members. The LED lamp plate is fixed on the heat sink through the second positioning members, and during installation, the second positioning members pass through the LED lamp plate and are fixed in the second fixing hole. The bottom surface of the connecting plate is provided with a plurality of functional grooves around the slot opening of the third receiving groove, the functional grooves are uniformly and spacedly distributed, and the power supply cavity heat dissipation structure further comprises a plurality of third positioning members. During assembly, one end of the third positioning members is fixed on the groove wall of the functional groove, and the other end of the third positioning members extends into the third receiving groove to limit the bottom cover. The first heat dissipation plates are distributed side by side, and the first heat dissipation plates are arranged in an inverted U shape. The second heat dissipation plates are uniformly and spacedly distributed around the central axis of the outer ring.

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