CN221279414U - Heat radiation structure and lamp - Google Patents

Abstract

The utility model discloses a heat radiation structure and a lamp, wherein the heat radiation structure comprises a heat radiation substrate, a radiator, a first heat pipe unit and a second heat pipe unit, and the heat radiation substrate is used for connecting a light source assembly; the radiator and the radiating substrate are relatively fixed, the radiator comprises a plurality of radiating fins, the radiating fins are arranged at intervals along a first direction, the first heat pipe unit comprises a plurality of first radiating pipes which are arranged side by side, each first radiating pipe is provided with an evaporation end and a condensation end, the evaporation end of each first radiating pipe is arranged between the radiating substrate and the radiator, and the condensation ends of the first radiating pipes sequentially penetrate through the radiating fins to be arranged; the second heat pipe unit comprises a plurality of second radiating pipes which are arranged side by side, the second radiating pipes are provided with evaporation ends and condensation ends, the evaporation ends of the second radiating pipes are arranged between the radiating substrate and the radiator, and the condensation ends of the second radiating pipes sequentially penetrate through the plurality of radiating fins to be arranged; the first heat pipe unit and the second heat pipe unit are arranged on two sides of the radiator in opposite directions.

Description

Heat dissipation structure and lamp

Technical Field

The utility model relates to the technical field of film and television lamps, and in particular to a heat dissipation structure and a lamp.

Background technique

During the use of the lamp, the light-emitting element continuously emits a large amount of heat. If the heat cannot be dissipated in time, the normal operation of the lamp will be affected. At the same time, the requirements of the lamp market for products are increasingly inclined to miniaturization, lightweight, and beautiful appearance, especially for film and television lamps, which require low-noise operation while ensuring the heat dissipation performance of the product. In order to reduce noise, most film and television lamp products on the market arrange the heat dissipation structure of the light source component and the heat dissipation structure of the control component separately. Some products separate the two heat dissipation structures into two front and rear cavities, and then arrange axial fans to dissipate heat in the cavity, which requires a large space of the lamp, which is not conducive to the miniaturization of film and television lamps, and the light source component or control component far away from the axial fan cannot be effectively dissipated; other products separate the two heat dissipation structures into two upper and lower cavities, and arrange axial fans to dissipate heat in the cavity for the light source component and the control component respectively, which increases the longitudinal length of the lamp, which is not conducive to the timely discharge of the heat exchange airflow.

In the above two existing heat dissipation structures, the heat dissipation structures both achieve heat dissipation of the light source assembly by directly contacting one side of the light source assembly, but are limited by the thermal conductivity and the installation space inside the lamp body, the heat dissipation effect is poor and does not take advantage of the miniaturization of film and television lamps. Therefore, it is urgent to provide a heat dissipation structure suitable for film and television lamps with high heat dissipation efficiency and compact structure.

Utility Model Content

In order to solve at least one of the above technical problems, the utility model provides a heat dissipation structure and a lamp, and the technical solutions adopted are as follows:

The heat dissipation structure provided by the utility model includes a heat dissipation substrate, a radiator, a first heat pipe unit, and a second heat pipe unit. The heat dissipation substrate is used to connect a light source assembly; the radiator is relatively fixed to the heat dissipation substrate, the radiator includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins are arranged at intervals along a first direction; the first heat pipe unit includes a plurality of first heat dissipation pipes arranged side by side, the first heat dissipation pipes have an evaporation end and a condensation end, the evaporation end of the first heat dissipation pipe is arranged between the heat dissipation substrate and the radiator, and the condensation end of the first heat dissipation pipe passes through the plurality of heat dissipation fins in sequence; the second heat pipe unit includes a plurality of second heat dissipation pipes arranged side by side, the second heat dissipation pipes have an evaporation end and a condensation end, the evaporation end of the second heat dissipation pipe is arranged between the heat dissipation substrate and the radiator, and the condensation end of the second heat dissipation pipe passes through the plurality of heat dissipation fins in sequence; wherein, the first heat pipe unit and the second heat pipe unit are arranged on both sides of the radiator facing each other.

In some embodiments of the utility model, the heat dissipation structure further includes a positioning support member, which is arranged between the heat dissipation substrate and the radiator, and the evaporation end of the first heat dissipation tube and the evaporation end of the second heat dissipation tube are separated by the positioning support member.

In certain embodiments of the utility model, the positioning support is provided with a plurality of first positioning grooves and a plurality of second positioning grooves, the first positioning grooves and the second positioning grooves are arranged on both sides of the positioning support back to back, the evaporation end of the first heat dissipation pipe is installed in the first positioning groove, and the evaporation end of the second heat dissipation pipe is installed in the second positioning groove.

In some embodiments of the present invention, the first positioning groove and the second positioning groove are arranged parallel to each other, and the first positioning groove and the second positioning groove are arranged alternately along the second direction.

In some embodiments of the present invention, the condensation end of the first heat dissipation tube and the condensation end of the second heat dissipation tube are arranged at intervals along the third direction.

In certain embodiments of the utility model, the condensing ends of each of the first heat dissipation tubes are evenly spaced along the second direction, and the evaporating ends of each of the first heat dissipation tubes are evenly spaced along the second direction. In two adjacent first heat dissipation tubes, the spacing distance between the evaporating ends is smaller than the spacing distance between the condensing ends.

In certain embodiments of the utility model, the condensing ends of each of the second heat dissipation tubes are evenly spaced along the second direction, and the evaporating ends of each of the second heat dissipation tubes are evenly spaced along the second direction. In two adjacent second heat dissipation tubes, the spacing distance between the evaporating ends is smaller than the spacing distance between the condensing ends.

In some embodiments of the present invention, one end of the heat dissipation fin away from the heat dissipation substrate is bent to form a reinforcement edge, and the reinforcement edge extends along a first direction.

In some embodiments of the utility model, two adjacent reinforcement edges are connected by a buckle, and two adjacent heat dissipation fins are relatively fixed.

The utility model also provides a lamp, comprising a light source assembly and the above-mentioned heat dissipation structure, wherein the light source assembly comprises a light-emitting element and a light source fixing plate; wherein the light source fixing plate is offsetly mounted on the heat dissipation substrate.

The embodiments of the utility model have at least the following beneficial effects: the heat dissipation structure is provided with a first heat pipe unit and a second heat pipe unit, and the heat released by the light source assembly is promptly transferred from the heat dissipation substrate to the heat sink, and the heat sink is provided with a plurality of heat dissipation fins to expand the heat dissipation area, thereby realizing efficient heat dissipation of the light source assembly. The heat dissipation structure arranges the first heat pipe unit and the second heat pipe unit on both sides of the heat sink, thereby increasing the number of effective heat pipes arranged under the contact area of the light source assembly, and reducing the product volume, thereby realizing efficient heat dissipation and conforming to the development trend of miniaturization of lamps.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic structural diagram of a heat dissipation structure;

FIG2 is an exploded schematic diagram of the heat dissipation structure provided in FIG1 ;

FIG3 is a cross-sectional schematic diagram of the heat dissipation structure provided in FIG1 ;

FIG4 is a schematic diagram of the heat dissipation structure provided in FIG1 from a first viewing angle;

FIG5 is a schematic diagram of the heat dissipation structure provided in FIG1 from a second viewing angle;

FIG. 6 is a connection diagram of the heat dissipation structure provided in FIG. 1 .

Figure numerals: 100, light source fixing plate; 200, heat dissipation substrate; 201, third positioning groove; 300, positioning support; 301, first positioning groove; 302, second positioning groove; 400, first heat dissipation pipe; 500, radiator; 501, fourth positioning groove; 510, heat dissipation fin; 511, reinforcement edge; 600, second heat dissipation pipe.

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with Figures 1 to 6, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

In the description of the present utility model, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The features defined as "first" and "second" are used to distinguish the feature names, rather than having special meanings. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

During the use of the lamp, the light-emitting element continuously emits a large amount of heat. If the heat cannot be dissipated in time, the normal operation of the lamp will be affected. At the same time, the requirements of the lamp market for products are increasingly inclined to miniaturization, lightweight, and beautiful appearance, especially for film and television lamps, which require low-noise operation while ensuring the heat dissipation performance of the product. In order to reduce noise, most film and television lamp products on the market arrange the heat dissipation structure of the light source component and the heat dissipation structure of the control component separately. Some products separate the two heat dissipation structures into two front and rear cavities, and then arrange axial fans to dissipate heat in the cavity, which requires a large space of the lamp, which is not conducive to the miniaturization of film and television lamps, and the light source component or control component far away from the axial fan cannot be effectively dissipated; other products separate the two heat dissipation structures into two upper and lower cavities, and arrange axial fans to dissipate heat in the cavity for the light source component and the control component respectively, which increases the longitudinal length of the lamp, which is not conducive to the timely discharge of the heat exchange airflow.

In the above two existing heat dissipation structures, axial fans need to be arranged in the two cavities where the light source assembly and the control assembly are located for separate heat dissipation, which increases the weight and volume of the product and increases the noise source. The thermal management system of the lamp is complex, and the manufacturing cost and subsequent maintenance cost of the product are high. Among them, the heat dissipation structure realizes the heat dissipation of the light source assembly by direct contact with one side of the light source assembly, but is limited by the thermal conductivity and the installation space inside the lamp body, the heat dissipation effect is poor and does not take advantage of the miniaturization of film and television lamps.

The utility model provides a lamp, which includes a light source assembly and a heat dissipation structure. The light source assembly includes a light-emitting component and a light source fixing plate 100. The heat dissipation structure has a high degree of integration, which is conducive to reducing the volume of the lamp body and realizing the miniaturization and lightweight of the lamp. At the same time, the heat dissipation structure can release the heat generated by the light source assembly in time, avoid thermal corrosion and burning of the light-emitting components, and extend the service life of the light source assembly.

In conjunction with the accompanying drawings, the light source fixing plate 100 is installed offset to the heat dissipation structure. When the light-emitting component is installed in the middle of the lamp, the heat sink 500 does not need to be arranged in the center, and can be offset to reserve more installation space for other components, thereby reducing the volume of the lamp product.

It is understandable that in some embodiments, the lamp further includes an axial flow fan, which is fixedly installed in the housing and arranged toward the heat dissipation structure to accelerate the flow of hot air in the heat dissipation structure, thereby improving the heat dissipation efficiency of the lamp. The specific installation position and number of the axial flow fan can be adjusted according to the use requirements of the lamp.

The other structures and operations of the lamp are well known in the relevant technologies to ordinary technicians in this field and will not be described in detail here. The heat dissipation structure will be introduced below.

The heat dissipation structure provided by the utility model includes a heat dissipation substrate 200, a heat sink 500, a first heat pipe unit, and a second heat pipe unit. The heat dissipation substrate 200 is used to connect the light source assembly; the heat sink 500 is relatively fixed to the heat dissipation substrate 200, the heat sink 500 includes a plurality of heat dissipation fins 510, and the plurality of heat dissipation fins 510 are arranged at intervals along a first direction. The first heat pipe unit includes a plurality of first heat dissipation pipes 400 arranged side by side, the first heat dissipation pipe 400 has an evaporation end and a condensation end, and the evaporation end of the first heat dissipation pipe 400 is arranged at the heat dissipation end. Between the substrate 200 and the radiator 500, the condensation end of the first heat pipe 400 passes through a plurality of heat fins 510 in sequence; the second heat pipe unit includes a plurality of second heat pipes 600 arranged side by side, the second heat pipe 600 has an evaporation end and a condensation end, the evaporation end of the second heat pipe 600 is arranged between the heat dissipation substrate 200 and the radiator 500, and the condensation end of the second heat pipe 600 passes through a plurality of heat fins 510 in sequence; wherein, the first heat pipe unit and the second heat pipe unit are arranged on both sides of the radiator 500 facing each other.

The heat dissipation structure is provided with a first heat pipe unit and a second heat pipe unit, and the heat released by the light source assembly is promptly transferred from the heat dissipation substrate 200 to the heat sink 500. The heat sink 500 expands the heat dissipation area by providing a plurality of heat dissipation fins 510 to achieve efficient heat dissipation of the light source assembly. The heat dissipation structure arranges the first heat pipe unit and the second heat pipe unit on both sides of the heat sink 500, increases the number of effective heat pipes arranged under the contact area of the light source assembly, and reduces the product volume, achieving efficient heat dissipation while complying with the development trend of miniaturization of lamps.

It should be noted that in the description of this case, taking the heat sink fin 510 as an example, the first direction is the thickness direction of the heat sink fin 510, the width direction of the heat sink fin 510 is the second direction, and the height direction of the heat sink fin 510 is the third direction.

In some of the embodiments, the heat dissipation structure further includes a positioning support 300, which is arranged between the heat dissipation substrate 200 and the radiator 500, and the evaporation end of the first heat dissipation pipe 400 and the evaporation end of the second heat dissipation pipe 600 are separated by the positioning support 300. In conjunction with the accompanying drawings, the evaporation end of the first heat dissipation pipe 400 is fixed between the heat dissipation substrate 200 and the positioning support 300, and the evaporation end of the second heat dissipation pipe 600 is fixed between the positioning support 300 and the radiator 500. The design of the double-layer heat pipe can reduce the arrangement of single-layer ineffective heat pipes. At the same time, the positioning support 300 separates the first heat pipe unit and the second heat pipe unit with opposite bending directions to avoid excessively high temperature due to heat concentration on one side, thereby accelerating heat exchange inside the shell.

Furthermore, the positioning support 300 is provided with a plurality of first positioning grooves 301 and a plurality of second positioning grooves 302, and the first positioning grooves 301 and the second positioning grooves 302 are arranged opposite to each other on both sides of the positioning support 300. It can be understood that the first positioning grooves 301 and the second positioning grooves 302 are provided to achieve the fixation of the first heat pipe unit and the second heat pipe unit relative to the positioning support 300. Specifically, in this embodiment, the evaporation end of the first heat dissipation pipe 400 is soldered to the first positioning groove 301, and the evaporation end of the second heat dissipation pipe 600 is soldered to the second positioning groove 302, so as to further increase the heat conduction between the first heat dissipation pipe 400, the positioning support 300 and the second heat dissipation pipe 600.

In some of the embodiments, in combination with the accompanying drawings, the first positioning groove 301 and the second positioning groove 302 are arranged parallel to each other along the first direction, and the first positioning groove 301 and the second positioning groove 302 are arranged alternately along the second direction, thereby reducing the thickness of the heat dissipation substrate 200 and improving the thermal conductivity efficiency, and at the same time can effectively shorten the heat exchange path between the evaporation end of the first heat dissipation tube 400 and the evaporation end of the second heat dissipation tube 600.

It can be understood that the heat dissipation substrate 200 is provided with a third positioning groove 201 for accommodating the first heat dissipation tube 400, and the first heat dissipation tube 400 is arranged between the first positioning groove 301 and the third positioning groove 201; the radiator 500 is provided with a fourth positioning groove 501 for accommodating the second heat dissipation tube 600, and the second heat dissipation tube 600 is arranged between the second positioning groove 302 and the fourth positioning groove 501.

Further, in conjunction with the accompanying drawings, the condensation end of the first heat pipe 400 and the condensation end of the second heat pipe 600 are arranged at intervals along the third direction. It can be understood that the condensation end of the first heat pipe 400 and the condensation end of the second heat pipe 600 are arranged at intervals to enhance the heat exchange effect between the first heat pipe unit and the second heat pipe unit and the radiator 500, and avoid mutual interference between the condensation end of the first heat pipe 400 and the condensation end of the second heat pipe 600, which causes the phenomenon of thermal stress concentration on the heat fin 510 and affects the heat exchange efficiency.

In this embodiment, the condensation end of the first heat pipe 400 is soldered to each heat dissipation fin 510, and the condensation end of the second heat pipe 600 is soldered to each heat dissipation fin 510, thereby enhancing the fixing effect of the first heat pipe unit and the second heat pipe unit while accelerating the heat conduction inside the heat dissipation structure.

In some of the embodiments, the condensation ends of the first heat dissipation tubes 400 are evenly spaced along the second direction, and the evaporation ends of the first heat dissipation tubes 400 are evenly spaced along the second direction, and the spacing distance between the evaporation ends of two adjacent first heat dissipation tubes 400 is smaller than the spacing distance between the condensation ends. In conjunction with the accompanying drawings, the spacing distance between the evaporation ends of the first heat dissipation tubes 400 is small to achieve a greater number of first heat dissipation tubes 400 in contact with the heat dissipation substrate 200 for heat exchange, and the spacing distance between the condensation ends of the first heat dissipation tubes 400 is large to fully achieve heat conduction between the first heat dissipation tubes 400 and the heat dissipation fins 510.

In some of the embodiments, the condensation ends of the second heat dissipation tubes 600 are evenly spaced along the second direction, and the evaporation ends of the second heat dissipation tubes 600 are evenly spaced along the second direction, and the spacing distance between the evaporation ends of two adjacent second heat dissipation tubes 600 is smaller than the spacing distance between the condensation ends. In conjunction with the accompanying drawings, the spacing distance between the evaporation ends of the second heat dissipation tubes 600 is small to achieve a greater number of second heat dissipation tubes 600 in contact with the positioning support 300 for heat exchange, and the spacing distance between the condensation ends of the second heat dissipation tubes 600 is large to fully achieve heat conduction between the second heat dissipation tubes 600 and the heat dissipation fins 510.

In some of the embodiments, one end of the heat sink fin 510 away from the heat sink substrate 200 is bent to form a reinforcement edge 511, and the reinforcement edge 511 extends along the first direction. In conjunction with the accompanying drawings, the reinforcement edge 511 is arranged at the bottom of the heat sink fin 510, and the reinforcement edge 511 can be arranged between two adjacent heat sink fins 510 to further improve the airtightness of the fluid channel, enhance the heat exchange effect, and enhance the anti-deformation ability of the heat sink fin 510.

In some of the embodiments, two adjacent reinforcing edges 511 are connected by snapping, and two adjacent heat sink fins 510 are relatively fixed. Specifically, in some embodiments, two adjacent reinforcing edges 511 are snap-connected by setting a recessed structure and a convex structure that can cooperate with each other; in other embodiments, the heat sink 500 includes a mounting plate, and each reinforcing edge 511 is snap-connected to the mounting plate to achieve relative fixation between each heat sink fin 510. It can be understood that the fixed connection between each reinforcing edge 511 can enhance the strength of the heat sink fin 510 to avoid deformation during use, and at the same time prevent the heat sink fin 510 from being vibrated by the fluid to generate resonance and amplify noise.

In the description of this specification, if there is a description with reference to the terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims (10)

1. A heat dissipation structure, comprising: A heat dissipation substrate (200), the heat dissipation substrate (200) being used to connect a light source assembly; A heat sink (500), the heat sink (500) being relatively fixed to the heat dissipation substrate (200), the heat sink (500) comprising a plurality of heat dissipation fins (510), the plurality of heat dissipation fins (510) being arranged at intervals along a first direction, A first heat pipe unit, the first heat pipe unit comprising a plurality of first heat dissipation pipes (400) arranged in parallel, the first heat dissipation pipes (400) having an evaporation end and a condensation end, the evaporation end of the first heat dissipation pipe (400) being arranged between the heat dissipation substrate (200) and the radiator (500), and the condensation end of the first heat dissipation pipe (400) being arranged through a plurality of heat dissipation fins (510) in sequence; a second heat pipe unit, the second heat pipe unit comprising a plurality of second heat dissipation pipes (600) arranged in parallel, the second heat dissipation pipes (600) having an evaporation end and a condensation end, the evaporation end of the second heat dissipation pipe (600) being arranged between the heat dissipation substrate (200) and the radiator (500), and the condensation end of the second heat dissipation pipe (600) being arranged to pass through a plurality of heat dissipation fins (510) in sequence; Wherein, the first heat pipe unit and the second heat pipe unit are arranged on two sides of the radiator (500) facing each other. 2. The heat dissipation structure according to claim 1 is characterized in that: the heat dissipation structure also includes a positioning support (300), the positioning support (300) is arranged between the heat dissipation substrate (200) and the radiator (500), and the evaporation end of the first heat dissipation tube (400) and the evaporation end of the second heat dissipation tube (600) are separated by the positioning support (300). 3. The heat dissipation structure according to claim 2 is characterized in that: the positioning support (300) is provided with a plurality of first positioning grooves (301) and a plurality of second positioning grooves (302), the first positioning grooves (301) and the second positioning grooves (302) are arranged on two sides of the positioning support (300) opposite to each other, the evaporation end of the first heat dissipation pipe (400) is installed in the first positioning groove (301), and the evaporation end of the second heat dissipation pipe (600) is installed in the second positioning groove (302). 4. The heat dissipation structure according to claim 3, characterized in that: the first positioning groove (301) and the second positioning groove (302) are arranged parallel to each other, and the first positioning groove (301) and the second positioning groove (302) are arranged alternately along the second direction. 5. The heat dissipation structure according to claim 1, characterized in that the condensation end of the first heat dissipation tube (400) and the condensation end of the second heat dissipation tube (600) are arranged at intervals along a third direction. 6. The heat dissipation structure according to claim 5 is characterized in that: the condensation end of each of the first heat dissipation tubes (400) is evenly spaced along the second direction, the evaporation end of each of the first heat dissipation tubes (400) is evenly spaced along the second direction, and in two adjacent first heat dissipation tubes (400), the spacing distance between the evaporation ends is smaller than the spacing distance between the condensation ends. 7. The heat dissipation structure according to claim 5 is characterized in that the condensation ends of each of the second heat dissipation tubes (600) are evenly spaced along the second direction, the evaporation ends of each of the second heat dissipation tubes (600) are evenly spaced along the second direction, and in two adjacent second heat dissipation tubes (600), the spacing distance between the evaporation ends is smaller than the spacing distance between the condensation ends. 8. The heat dissipation structure according to any one of claims 1 to 7, characterized in that one end of the heat dissipation fin (510) away from the heat dissipation substrate (200) is bent to form a reinforcement edge (511), and the reinforcement edge (511) extends along a first direction. 9. The heat dissipation structure according to claim 8, characterized in that: two adjacent reinforcing edges (511) are connected by snap fastening, and two adjacent heat dissipation fins (510) are relatively fixed. 10. A lamp, comprising: A light source assembly, comprising a light emitting element and a light source fixing plate (100); The heat dissipation structure according to any one of claims 1 to 9, wherein the light source fixing plate (100) is mounted offset to the heat dissipation substrate (200).