Panel lamp

Abstract

The panel lamp comprises a lamp shell, a heat dissipation device and a lamp panel assembly, the lamp shell is provided with an air inlet, an air outlet and a heat dissipation air channel, the air inlet and the air outlet are formed in the two adjacent side walls of the lamp shell correspondingly, the heat dissipation device comprises a cross flow fan and a heat dissipation assembly, and the cross flow fan is arranged in the heat dissipation air channel; the heat dissipation air channel is divided into an air inlet channel and an air outlet channel, the air inlet channel communicates with the air inlet, an included angle is formed between the air outlet channel and the air inlet channel, the air inlet channel communicates with the air outlet, the heat dissipation assembly is arranged in the air outlet channel, and the lamp panel assembly is arranged in the air outlet channel and is in heat conduction connection with the heat dissipation assembly. A part of the heat dissipation assembly is located between the cross flow fan and the lamp panel assembly. According to the technical scheme, the heat dissipation effect on the lamp panel assembly can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of photographic lighting equipment technology, and in particular to a panel light. Background Technology

[0002] Compared to point light sources, panel lights are surface light sources. Therefore, they have a larger light source area and emit more uniform light, providing surface lighting for the subject.

[0003] In related technologies, panel lights mostly use axial fans to dissipate heat from the LED beads of their light panel components. Specifically, the axial fan drives external airflow to flow axially towards the heating surface of the light panel component. After hitting the heating surface, the airflow bends and finally flows out of the air outlet to dissipate the heat of the light panel component to the outside. However, in this method, the airflow is bent due to interference from the heating surface, which causes airflow loss and results in poor heat dissipation of the panel light. Utility Model Content

[0004] This application provides a panel light that can effectively improve the heat dissipation effect of the light panel assembly.

[0005] This application provides a panel light, which includes a lamp housing, a heat dissipation device, and a lamp board assembly;

[0006] The lamp housing has an air inlet, an air outlet, and a heat dissipation duct. The air inlet and the air outlet are respectively located on two adjacent side walls of the lamp housing. The heat dissipation device includes a crossflow fan and a heat dissipation component. The crossflow fan is located in the heat dissipation duct and divides the heat dissipation duct into an air inlet duct and an air outlet duct. The air inlet duct is connected to the air inlet. The air outlet duct is set at an angle to the air inlet duct and is connected to the air outlet. The heat dissipation component is located in the air outlet duct. The lamp panel assembly is located in the air outlet duct and is thermally connected to the heat dissipation component.

[0007] Wherein, along the extending direction of the air inlet duct, a portion of the structure of the heat dissipation component is located between the crossflow fan and the lamp panel assembly.

[0008] In some embodiments, the heat dissipation assembly includes a plurality of heat sinks, each heat sink including a main body and an extension;

[0009] The main body extends along the extension direction of the air outlet duct, and the extension portion is connected to the side of the main body away from the air outlet along the extension direction of the air outlet duct.

[0010] Wherein, along the extending direction of the air inlet duct, the extension is located between the crossflow fan and the lamp panel assembly.

[0011] In some embodiments, along the extension direction of the air outlet, the surface of the extension portion away from the main body portion is flush with the surface of the lamp panel assembly away from the air outlet.

[0012] In some embodiments, the crossflow fan includes an impeller and a duct housing, the impeller being installed inside the duct housing, and the duct housing being disposed inside the heat dissipation duct; the extension includes a first extension section and a second extension section;

[0013] The first extension section is connected to the side of the main body away from the air outlet along the extension direction of the air outlet duct, and is used to avoid the impeller. The second extension section is connected to the side of the first extension section away from the main body along the extension direction of the air outlet duct, and is used to avoid the air duct shell.

[0014] Wherein, along the extending direction of the air inlet duct, the width of the first extension section is greater than the width of the second extension section.

[0015] In some embodiments, the width of the first extension segment gradually increases along the extension direction of the air inlet duct in the direction of extension of the air outlet duct.

[0016] In some embodiments, the heat dissipation assembly further includes a heat-conducting structure disposed between the lamp panel assembly and the plurality of heat sinks to conduct heat from the lamp panel assembly onto the plurality of heat sinks.

[0017] In some embodiments, the light panel assembly includes a panel and a plurality of LED beads, wherein the plurality of LED beads are arranged at intervals on the surface of the panel;

[0018] The thermally conductive structure is a thermally conductive adhesive layer, which is bonded between the plate and the plurality of heat sinks to conduct the heat from the plate onto the plurality of heat sinks.

[0019] In some embodiments, the lamp housing includes a top shell wall and a back shell wall, the top shell wall having the air outlet, the back shell wall being adjacent to the top shell wall, and the back shell wall having the air inlet.

[0020] Wherein, along the extension direction of the air outlet, the air inlet is located on the side of the back shell wall away from the air outlet.

[0021] In some embodiments, along the extension direction of the air outlet, the side of the back shell wall away from the air outlet has a first grille structure, and the air inlet is formed on the first grille structure.

[0022] And / or, the top shell wall has a second grille structure, on which the air outlet is formed;

[0023] And / or, the lamp housing further includes a front shell wall, which is connected to the top shell wall and is disposed opposite to the back shell wall along the extension direction of the air inlet duct. The front shell wall has a light-emitting area. The panel lamp further includes an optical structure that covers the light-emitting area. The light emitted by the lamp panel assembly passes through the optical structure and the light-emitting area in sequence and is emitted to the outside.

[0024] In some embodiments, the angle between the air inlet duct and the air outlet duct is 90 degrees.

[0025] Based on the panel light of this application embodiment, under the action of the crossflow fan, the airflow can flow smoothly from the air inlet to the air outlet in an arc shape. In this way, it can effectively ensure that the airflow in contact with the heat dissipation components is large enough to remove more heat generated by the light panel components when they are working, thereby improving the heat dissipation effect of the light panel components.

[0026] Furthermore, along the extension direction of the air intake duct, part of the heat dissipation component is located between the crossflow fan and the lamp panel component, which can increase the contact area between the heat dissipation component and the lamp panel component, so that as much heat from the lamp panel component is transferred to the heat dissipation component as possible, and the airflow can carry away more heat, effectively improving the heat dissipation effect on the lamp panel component. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a panel light structure according to an embodiment of this application;

[0029] Figure 2 for Figure 1 A structural schematic diagram of the center panel light from another perspective;

[0030] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0031] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0032] Figure 5 for Figure 4Schematic diagram of the heat sink structure;

[0033] Figure 6 for Figure 4 A schematic diagram of the structure of a cross-flow fan.

[0034] Explanation of icon numbers:

[0035] 100. Panel light; 10. Lamp housing; 10A. Heat dissipation duct; 10B. Air inlet; 10C. Air outlet; 10D. Air inlet duct; 10E. Air outlet duct; 11. Top shell wall; 111. Second grille structure; 12. Back shell wall; 121. First grille structure; 13. Front shell wall; 13A. Light emission area; 20. Lamp panel assembly; 21. Panel body; 22. LED beads; 30. Heat dissipation device; 31. Crossflow fan; 311. Fan wheel; 312. Air duct shell; 32. Heat dissipation assembly; 321. Heat sink; 3211. Main body; 3212. Extension; 3212A. First extension section; 3212B. Second extension section; 40. Optical structure; 41. Softbox; 50. Circuit board assembly; x. Extension direction of the air inlet duct; y. Extension direction of the air outlet duct.

[0036] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0038] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0039] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Compared to point light sources, panel lights are surface light sources. Therefore, they have a larger light source area and emit more uniform light, providing surface lighting for the subject.

[0042] In related technologies, panel lights mostly use axial fans to dissipate heat from the LED beads in their light panel components. Specifically, the axial fan drives external airflow axially towards the heating surface of the light panel component. The airflow then bends after hitting the heating surface and finally exits through the exhaust vent to dissipate the heat from the light panel component. However, in this method, the airflow is bent due to interference from the heating surface, resulting in airflow loss and thus poor heat dissipation in the panel light. It should be noted that in these related technologies, because the outlet of the axial fan is angled relative to the exhaust vent, the airflow must bend after exiting the fan outlet before exiting through the exhaust vent.

[0043] To resolve the above issues, please refer to the following: Figures 1-3 This application provides a panel light 100, which includes a lamp housing 10, a heat dissipation device 30, and a lamp panel assembly 20.

[0044] The lamp housing 10 serves to support the various components of the panel light 100. Its material can be metal to ensure good overall structural strength and prevent deformation and damage. Alternatively, the lamp housing 10 can be made of plastic; this embodiment does not impose any limitations on this. The shape of the lamp housing 10 can be roughly square, such as a square or rectangle, to ensure a regular shape for easy processing and manufacturing in the workshop. Of course, the shape of the lamp housing 10 can also be circular or irregular; this embodiment does not impose any limitations on this.

[0045] The lamp housing 10 has an air inlet 10B, an air outlet 10C, and a heat dissipation duct 10A. The air inlet 10B and the air outlet 10C are connected to the heat dissipation duct 10A. It can be understood that the outside airflow flows into the heat dissipation duct 10A from the air inlet 10B, and then flows back to the outside from the air outlet 10C. The air inlet 10B and the air outlet 10C are respectively formed on two adjacent side walls of the lamp housing 10. The two side walls are adjacent and set at an angle. For example, the two side walls can be set perpendicularly so that the orientation of the air inlet 10B is perpendicular to the orientation of the air outlet 10C.

[0046] The heat dissipation device 30 is used to dissipate heat from the lamp panel assembly 20 and is located within the heat dissipation duct 10A. The heat dissipation device 30 includes a crossflow fan 31 and a heat dissipation component 32. The crossflow fan 31 is generally long cylindrical in shape and is located within the heat dissipation duct 10A, dividing the heat dissipation duct 10A into an inlet duct 10D and an outlet duct 10E. The heat dissipation component 32 is located within the outlet duct 10E. The inlet duct 10D and the outlet duct 10E are set at an angle, for example, the angle between the inlet duct 10D and the outlet duct 10E is greater than or equal to 30 degrees and less than or equal to 150 degrees. In this embodiment, the specific value of the angle is not limited and can be 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, 85 degrees, 90 degrees, 95 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, or 150 degrees, etc. In some exemplary embodiments, the angle between the air inlet duct 10D and the air outlet duct 10E is greater than or equal to 80 degrees and less than or equal to 100 degrees.

[0047] The air inlet duct 10D is connected to the air inlet 10B, and the air outlet duct 10E is connected to the air outlet 10C. Under the drive of the crossflow fan 31, the external airflow will first flow into the air inlet duct 10D from the air inlet 10B. Then the airflow is curved and flows from the air inlet duct 10D to the air outlet 10E. Then it flows from the air outlet 10E to the air outlet 10C, and finally flows to the outside through the air outlet 10C.

[0048] In this embodiment, the heat dissipation component 32 can be a structure that combines multiple separate heat sinks 321 to cooperate with the crossflow fan 31 for air cooling. Of course, the heat dissipation component 32 can also be in the form of an integrated heat sink, that is, it includes multiple heat sinks and heat sinks that are integrally formed. This embodiment does not impose specific restrictions on the specific form of the heat dissipation component 32.

[0049] Under the action of the crossflow fan 31, the airflow can flow smoothly from the air inlet duct 10D to the air outlet duct 10E in an arc shape. This effectively ensures that the airflow in contact with the heat dissipation component 32 is large enough to remove more heat generated by the light panel component 20 during operation, thereby improving the heat dissipation effect of the light panel component 20. In addition, the crossflow fan 31 generates less noise during operation, which can avoid interfering with the shooting work on site.

[0050] The lamp panel assembly 20 of the panel light 100 is a surface light source. Compared with a point light source, the surface light source has a larger light source area, so the light emitted by the lamp panel assembly 20 is more uniform. The lamp panel assembly 20 is located in the air outlet duct 10E and is thermally connected to the heat dissipation assembly 32. When the lamp panel assembly 20 is working, it generates heat. Based on the thermal connection between the heat dissipation assembly 32 and the lamp panel assembly 20, the heat of the lamp panel assembly 20 can be transferred to the heat dissipation assembly 32. Then, as the airflow flows through the air outlet 10E, the airflow absorbs the heat from the heat dissipation assembly 32 and flows to the outside through the air outlet 10C, finally dissipating the heat from the lamp panel assembly 20 to the outside, effectively reducing the heat generated by the lamp panel assembly 20 during operation.

[0051] The panel light 100 may further include a circuit board assembly 50, which is installed inside the lamp housing 10 and electrically connected to the lamp panel assembly 20 and the crossflow fan 31. The circuit board assembly 50 may be independent of the heat dissipation duct 10A or may be located within the heat dissipation duct 10A; this embodiment does not impose any limitations on this.

[0052] Along the extension direction x of the air inlet duct 10D, a portion of the structure of the heat dissipation component 32 is located between the crossflow fan 31 and the lamp panel assembly 20. Thus, in this embodiment, the heat dissipation component 32 is present in the area between the crossflow fan 31 and the lamp panel assembly 20 along the extension direction x of the air inlet duct 10D. This increases the contact area between the heat dissipation component 32 and the lamp panel assembly 20, allowing as much heat from the lamp panel assembly 20 as possible to be transferred to the heat dissipation component 32. Consequently, the airflow can carry away more heat, effectively improving the heat dissipation effect on the lamp panel assembly 20.

[0053] Please refer to the following: Figures 1-3 In some embodiments, the lamp housing 10 includes a top housing wall 11 and a back housing wall 12, which are adjacent to each other and can be arranged perpendicularly. The top housing wall 11 has an air outlet 10C, and the back housing wall 12 has an air inlet 10B. Thus, when the crossflow fan 31 is working, the outside airflow will enter through the back housing wall 12 and exit through the top housing wall 11.

[0054] It is understandable that if the distance between the air inlet 10B and the air outlet 10C is too close, the airflow path will be greatly shortened, leading to airflow short-circuiting. Therefore, in this embodiment, along the extension direction y of the air outlet duct 10E, the air inlet 10B is located on the side of the back cover wall 12 away from the air outlet 10C. This allows the air inlet 10B and the air outlet 10C to be as far apart as possible, resulting in a longer airflow path within the heat dissipation duct 10A. This allows the airflow to contact the heat dissipation component 32 as much as possible, expelling more heat from the lamp panel assembly 20 to the outside and further improving heat dissipation efficiency.

[0055] Of course, in other embodiments, along the extension direction x of the air inlet duct 10D, the air inlet 10B may be located in the middle of the back shell wall 12 away from the air outlet 10C, and this embodiment does not limit this.

[0056] Please refer to the following: Figures 1-3 In some embodiments, along the extending direction y of the air outlet 10E, the side of the back shell wall 12 away from the air outlet 10C has a first grille structure 121, on which an air inlet 10B is formed. Thus, the first grille structure 121 can prevent external debris from entering the heat dissipation air duct 10A and affecting the lamp panel assembly 20, thereby ensuring the durability of the panel light 100.

[0057] Please refer to the following: Figures 1-3 In some embodiments, the top shell wall 11 has a second grille structure 111, on which an air outlet 10C is formed. Thus, the second grille structure 111 can prevent external debris from entering the heat dissipation duct 10A and affecting the lamp panel assembly 20, thereby ensuring the durability of the panel light 100.

[0058] Please refer to the following: Figures 1-3 In some embodiments, along the extension direction y of the air outlet 10E, the back shell wall 12 has a first grille structure 121 on the side away from the air outlet 10C, and an air inlet 10B is formed on the first grille structure 121; the top shell wall 11 has a second grille structure 111, and an air outlet 10C is formed on the second grille structure 111.

[0059] Thus, by setting the first grille structure 121 and the second grille structure 111, it is possible to effectively prevent external debris from entering the heat dissipation duct 10A and affecting the lamp panel assembly 20, so as to ensure the durability of the panel light 100.

[0060] Please refer to the following: Figures 1-3In some embodiments, the lamp housing 10 further includes a front shell wall 13, which is connected to the top shell wall 11 and is disposed opposite to the back shell wall 12 along the extension direction x of the air inlet duct 10D. The front shell wall 13 has a light-emitting area 13A, which can be a light-emitting port formed on the front shell wall 13 or a transparent area formed on the front shell wall 13; this embodiment does not impose any limitations on this.

[0061] The panel light 100 also includes an optical structure 40 that covers the light-emitting area 13A. Light emitted from the light panel assembly 20 passes sequentially through the diffuser 41 and the light-emitting area 13A before being emitted to the outside. Thus, the optical structure 40 can convert the light from the light panel assembly 20 into the desired light.

[0062] As an example, the optical structure 40 can be a diffuser 41, which is connected to the front shell wall 13 and covers the light-emitting area 13A. The light emitted from the lamp panel assembly 20 passes sequentially through the diffuser 41 and the light-emitting area 13A before being emitted to the outside. Thus, the diffuser 41 can convert the light emitted from the lamp panel assembly 20 into soft, diffused light, making the light emitted by the panel light 100 softer. As another example, the optical structure 40 can be a condenser lens (not shown in the figure), which is disposed on the lamp panel assembly 20 and covers the light-emitting area 13A. The light emitted from the lamp panel assembly 20 passes sequentially through the condenser lens and the light-emitting area 13A before being emitted to the outside. Thus, the condenser lens can converge the light emitted from the lamp panel assembly 20. This embodiment does not impose specific limitations on the form of the light structure; the appropriate optical structure 40 can be selected according to the actual light emission requirements.

[0063] Please refer to the following: Figures 3-4 In some embodiments, the heat dissipation component 32 includes multiple heat sinks 321, all of which are separate structures. The heat sinks 321 can be made of metals with good thermal conductivity, such as aluminum or copper. The multiple heat sinks 321 can be arranged sequentially within the air outlet duct 10E, and all of the multiple heat sinks 321 are in thermal contact with the lamp panel assembly 20 to achieve thermal connection.

[0064] Each heat sink 321 includes a main body portion 3211 and an extension portion 3212. The main body portion 3211 is the main body portion of the heat sink 321. The main body portion 3211 extends along the extension direction y of the air outlet 10E. For example, the main body portion 3211 may extend along the extension direction y of the air outlet 10E to the air outlet 10C, or it may extend to a position close to the air outlet 10C. This embodiment does not limit this.

[0065] The extension portion 3212 is connected to the side of the main body 3211 away from the air outlet 10C along the extending direction y of the air outlet 10E. The extension portion 3212 and the main body 3211 can be integrally constructed. It is understood that the extension portion 3212 extends along the extending direction y of the air outlet 10E and extends to connect with the side of the main body 3211 away from the air outlet 10C.

[0066] Along the extension direction x of the air inlet duct 10D, the extension portion 3212 is located between the crossflow fan 31 and the lamp panel assembly 20. This arrangement provides multiple extension portions 3212 of heat sinks 321 in the area between the crossflow fan 31 and the lamp panel assembly 20 along the extension direction x of the air inlet duct 10D. This increases the contact area between the heat dissipation assembly 32 and the lamp panel assembly 20, allowing as much heat from the lamp panel assembly 20 as possible to be transferred to the multiple heat sinks 321, preventing poor heat dissipation in localized areas of the lamp panel assembly 20. Furthermore, the air-cooled cooling system of the heat sinks 321 and the crossflow fan 31 provides excellent heat dissipation for the lamp panel assembly 20. The multiple heat sinks 321 not only ensure good heat dissipation but also reduce the material cost of the heat dissipation assembly 32 and its overall weight.

[0067] It should be noted that the airflow from the crossflow fan 31 to the air outlet 10E may or may not pass through the extension 3212. When the airflow does not pass through the extension 3212, some of the heat from the lamp panel assembly 20 will first be transferred to the extension 3212, and then from the extension 3212 to the main body 3211. This configuration can improve the heat dissipation effect of the lamp panel assembly 20. When the airflow passes through the extension 3212, some of the heat transferred from the lamp panel assembly 20 to the extension 3212 will be carried away by the airflow and partially transferred to the main body 3211. This configuration can also improve the heat dissipation effect of the lamp panel assembly 20. This embodiment does not impose any restrictions on this.

[0068] Please refer to the following: Figures 3-4 In some embodiments, along the extending direction y of the air outlet 10E, the surface of the extension portion 3212 away from the main body portion 3211 is flush with the surface of the lamp panel assembly 20 away from the air outlet 10C. This maximizes the contact area between the extension portion 3212 and the lamp panel assembly 20, thereby improving the heat conduction efficiency of both.

[0069] Of course, in other embodiments, along the extending direction y of the air outlet 10E, the surface of the extension portion 3212 on the side away from the main body portion 3211 may extend beyond the surface of the lamp panel assembly 20 on the side away from the air outlet 10C. This embodiment does not limit this.

[0070] Please refer to the following: Figures 3-6Furthermore, the crossflow fan 31 includes a vane 311 and a duct housing 312. The vane 311 is elongated cylindrical and can rotate around its own axis to deliver airflow from the inlet duct 10D to the outlet duct 10E. The vane 311 can be rotated by a motor of the crossflow fan 31. The vane 311 can be made of metal or plastic, and this embodiment does not limit this. The vane 311 is installed inside the duct housing 312; this embodiment does not specifically limit the shape and material of the vane 311.

[0071] The air duct housing 312 is arc-shaped to guide airflow, thereby reducing airflow loss when the airflow passes through the crossflow fan 31. The air duct housing 312 can be made of metal or plastic. This embodiment does not impose specific limitations on the shape and material of the air duct housing 312. The air duct housing 312 is located within the heat dissipation air duct 10A.

[0072] The extension 3212 includes a first extension section 3212A and a second extension section 3212B. The first extension section 3212A is connected to the side of the main body 3211 away from the air outlet 10C along the extension direction y of the air outlet 10E; the second extension section 3212B is connected to the side of the first extension section 3212A away from the main body 3211 along the extension direction y of the air outlet 10E.

[0073] The first extension section 3212A is used to avoid the impeller 311, so the extension section 3212 will not interfere with the installation of the impeller 311 of the crossflow fan 31 in the heat dissipation duct 10A; the second extension section 3212B is used to avoid the duct housing 312, so the extension section 3212 will also not interfere with the installation of the duct housing 312 of the crossflow fan 31 in the heat dissipation duct 10A.

[0074] Since the air duct housing 312 is located outside the impeller 311, the space occupied by the air duct housing 312 in the heat dissipation air duct 10A is greater than the space occupied by the impeller 311 in the heat dissipation air duct 10A. Based on this, in this embodiment, along the extension direction x of the air inlet duct 10D, the width of the first extension segment 3212A is set to be greater than the width of the second extension segment 3212B, so that the first extension segment 3212A can correspondingly avoid the impeller 311, and the second extension segment 3212B can correspondingly avoid the air duct housing 312. At the same time, the width of the first extension segment 3212A is increased to improve the heat conduction effect of the heat sink 321 on the lamp panel assembly 20.

[0075] Please refer to the following: Figures 3-5 In some exemplary configurations, the width of the first extension segment 3212A gradually increases along the extension direction x of the air inlet duct 10D in the extension direction y of the air outlet duct 10E.

[0076] Since the outer contour of the impeller 311 is arc-shaped, the width of the first extension 3212A can be adapted to the outer contour of the impeller 311 to avoid obstructing its placement, while also ensuring that the first extension 3212A has a larger size to improve the heat conduction efficiency with the lamp panel assembly 20. Optionally, the first extension 3212A can be arc-shaped or obliquely shaped; this embodiment does not impose any limitations on this.

[0077] Please refer to the following: Figures 3-4 In some embodiments, the heat dissipation component 32 further includes a heat-conducting structure (not shown in the figure). The heat-conducting structure can be a heat-conducting metal plate, a heat-conducting adhesive layer, or a combination of a heat-conducting metal plate and a heat-conducting adhesive layer. This embodiment does not limit this.

[0078] A heat-conducting structure is disposed between the lamp panel assembly 20 and the multiple heat sinks 321. The heat-conducting structure is thermally connected to the lamp panel assembly 20 and the multiple heat sinks 321 to conduct heat from the lamp panel assembly 20 to the multiple heat sinks 321. In this way, the heat-conducting structure helps to improve the efficiency of heat transfer from the lamp panel assembly 20 to the multiple heat sinks 321, thereby effectively improving the overall heat dissipation effect of the heat dissipation device 30 on the lamp panel assembly 20.

[0079] Please refer to the following: Figures 3-4 Furthermore, the lamp board assembly 20 includes a board body 21 and a plurality of LED beads 22. The board body 21 serves not only as a circuit board but also as a support for the plurality of LED beads 22. The board body 21 can be a ceramic substrate or a metal substrate, etc., to provide good thermal conductivity. The plurality of LED beads 22 are soldered onto one surface of the board body 21 along its thickness direction, and the plurality of LED beads 22 are spaced apart on the surface of the board body 21. For example, the plurality of LED beads 22 can be arranged in an array to form a surface light source.

[0080] Understandably, if the heat-conducting structure is a heat-conducting metal plate, during the manufacturing process, multiple LED beads 22 will be soldered onto one side of the lamp board first, and then the heat-conducting metal plate will be soldered onto the other side of the lamp board. However, when soldering the heat-conducting metal plate, there is a risk that the soldered LED beads 22 will detach from the lamp board.

[0081] Based on this, in this embodiment, since the thermally conductive structure is a thermally conductive adhesive layer, it is only necessary to apply the thermally conductive adhesive layer to the other side of the lamp board, thereby avoiding the soldering operation on the other side of the lamp board and effectively preventing the LED beads 22 from falling off after soldering. Furthermore, since the multiple LED beads 22 are arranged at intervals, the heat of the multiple LED beads 22 is relatively dispersed, so the thermally conductive adhesive layer can effectively transfer the heat of the multiple LED beads 22 to the lamp board.

[0082] Please refer to the following: Figures 3-4 In some embodiments, the angle between the air inlet duct 10D and the air outlet duct 10E is 90 degrees, which makes the airflow from the air inlet duct 10D to the air outlet duct 10E smoother, and allows the airflow to pass through the heat dissipation component 32 with a larger air volume and absorb a large amount of heat from the heat dissipation component 32.

[0083] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0084] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A panel light, characterized in that, include: The lamp housing has an air inlet, an air outlet, and a heat dissipation duct, wherein the air inlet and the air outlet are respectively opened on two adjacent side walls of the lamp housing; A heat dissipation device includes a crossflow fan and a heat dissipation component. The crossflow fan is disposed in the heat dissipation duct and divides the heat dissipation duct into an air inlet duct and an air outlet duct. The air inlet duct is connected to the air inlet. The air outlet duct is set at an angle to the air inlet duct and is connected to the air outlet duct. The heat dissipation component is disposed in the air outlet duct. as well as The light panel assembly is disposed in the air outlet duct and is thermally connected to the heat dissipation assembly; Wherein, along the extending direction of the air inlet duct, a portion of the structure of the heat dissipation component is located between the crossflow fan and the lamp panel assembly.

2. The panel light as described in claim 1, characterized in that, The heat dissipation assembly includes multiple heat sinks, each heat sink comprising: The main body extends along the extension direction of the air outlet duct; and An extension is connected to the side of the main body away from the air outlet along the extending direction of the air outlet duct; Wherein, along the extending direction of the air inlet duct, the extension is located between the crossflow fan and the lamp panel assembly.

3. The panel light as described in claim 2, characterized in that, Along the extension direction of the air outlet, the surface of the extension portion away from the main body is flush with the surface of the lamp panel assembly away from the air outlet.

4. The panel light as described in claim 2, characterized in that, The crossflow fan includes an impeller and a duct housing, the impeller being installed inside the duct housing, and the duct housing being disposed within the heat dissipation duct; the extension includes: The first extension section, along the extending direction of the air outlet duct, connects to the side of the main body away from the air outlet and is used to avoid the impeller; and The second extension section is connected to the side of the first extension section away from the main body along the extension direction of the air outlet duct, and is used to avoid the air outlet shell; Wherein, along the extending direction of the air inlet duct, the width of the first extension section is greater than the width of the second extension section.

5. The panel light as described in claim 4, characterized in that, In the extending direction of the air outlet duct, the width of the first extension segment gradually increases along the extending direction of the air inlet duct.

6. The panel light as described in claim 2, characterized in that, The heat dissipation component also includes: A heat-conducting structure is disposed between the lamp panel assembly and the plurality of heat sinks to conduct heat from the lamp panel assembly onto the plurality of heat sinks.

7. The panel light as described in claim 6, characterized in that, The light panel assembly includes a panel and a plurality of LED beads, wherein the plurality of LED beads are arranged at intervals on the surface of the panel. The thermally conductive structure is a thermally conductive adhesive layer, which is bonded between the plate and the plurality of heat sinks to conduct the heat from the plate onto the plurality of heat sinks.

8. The panel light as described in any one of claims 1-7, characterized in that, The lamp housing includes: The top shell wall has the aforementioned air outlet; and The back shell wall is adjacent to the top shell wall, and the back shell wall has the air inlet. Wherein, along the extension direction of the air outlet, the air inlet is located on the side of the back shell wall away from the air outlet.

9. The panel light as described in claim 8, characterized in that, Along the extension direction of the air outlet, the back shell wall has a first grille structure on the side away from the air outlet, and the air inlet is formed on the first grille structure; And / or, the top shell wall has a second grille structure, on which the air outlet is formed; And / or, the lamp housing further includes a front shell wall, which is connected to the top shell wall and is disposed opposite to the back shell wall along the extension direction of the air inlet duct. The front shell wall has a light-emitting area. The panel lamp further includes an optical structure that covers the light-emitting area. The light emitted by the lamp panel assembly passes through the optical structure and the light-emitting area in sequence and is emitted to the outside.

10. The panel light according to any one of claims 1-7, characterized in that, The angle between the air inlet duct and the air outlet duct is 90 degrees.

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