A light fixture with adjustable light projection angle

Abstract

The application belongs to the field of lighting, and more particularly relates to a lamp with adjustable light projection angle, which comprises a light source assembly, a heat dissipation assembly, the heat dissipation assembly comprising a heat dissipation base plate and a heat dissipation piece, the heat dissipation base plate comprising opposite first and second surfaces, the heat dissipation piece being arranged on the first surface, and the light source assembly being arranged on the second surface; two first strip-shaped grooves are formed on the heat dissipation base plate and extend through the heat dissipation base plate along a first direction, and the heat dissipation piece is located between the two first strip-shaped grooves; a U-shaped support is arranged, opposite ends of the U-shaped support penetrating through corresponding first strip-shaped grooves, respectively, and being fixedly connected to two opposite side walls of the heat dissipation piece through two fasteners, respectively; when the fasteners are loosened, the U-shaped support can rotate relative to the heat dissipation piece with a straight line parallel to a second direction as a rotation shaft, and the first direction is perpendicular to the second direction. The lamp with adjustable light projection angle provided by the application can ensure that the light projection angle of the light source assembly is always maintained within the required light projection range.

Description

Technical Field

[0001] This invention belongs to the field of lighting, and more specifically, relates to a lamp with an adjustable projection angle. Background Technology

[0002] A floodlight is a lighting fixture that provides a higher illuminance to the illuminated surface than the surrounding environment. It is also known as a spotlight and is mainly used for large-area work sites, building outlines, stadiums, overpasses, monuments, parks, and flower beds.

[0003] In existing technologies, floodlights can usually adjust the projection angle to 360°. However, in actual use, it is usually only necessary to project light within a specific projection angle range. During the process of manually adjusting the projection angle, it is difficult to ensure that the projection angle is within the required projection range. Summary of the Invention

[0004] The purpose of this invention is to provide a lamp with an adjustable projection angle to solve the technical problem that it is difficult to ensure that the projection angle is within the required projection range during the process of manually adjusting the projection angle.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A lamp with an adjustable projection angle is provided, comprising: a light source assembly; a heat dissipation assembly, wherein the heat dissipation assembly includes a heat dissipation substrate and a heat dissipation component, the heat dissipation substrate includes a first surface and a second surface opposite to each other, the heat dissipation component is disposed on the first surface, and the light source assembly is disposed on the second surface; two first strip-shaped grooves are formed on the heat dissipation substrate, which penetrate the heat dissipation substrate and extend along a first direction, and the heat dissipation component is located between the two first strip-shaped grooves;

[0006] The U-shaped bracket has its opposite ends passing through the corresponding first strip grooves and being fixedly connected to the two opposite side walls of the heat sink by two fasteners. When the fasteners are loosened, the U-shaped bracket can rotate relative to the heat sink about a straight line parallel to the second direction as its axis of rotation, and the first direction is perpendicular to the second direction.

[0007] Furthermore, the length of the first strip in the first direction satisfies the following relationship:

[0008] D = L2 - L1

[0009]

[0010]

[0011] The first strip groove has a first end and a second end in a first direction;

[0012] Wherein, H1 is the distance from the axis of rotation of the U-shaped bracket to the first surface, H2 is the distance from the axis of rotation of the U-shaped bracket to the second surface, L1 is the distance from the projection of the axis of rotation of the U-shaped bracket on the first surface to the first end of the corresponding first strip groove, L2 is the distance from the projection of the axis of rotation of the U-shaped bracket on the first surface to the second end of the corresponding first strip groove, W is the width of the U-shaped bracket; θ1 is the angle between the extension direction of the U-shaped bracket and a third direction when the U-shaped bracket is rotated to abut against the groove wall at the first end of the first strip groove; θ2 is the angle between the extension direction of the U-shaped bracket and the third direction when the U-shaped bracket is rotated to abut against the groove wall at the second end of the first strip groove; the third direction is perpendicular to the first direction and the second direction.

[0013] Furthermore, the U-shaped bracket has a first through hole at each of its opposite ends, and the heat sink has a corresponding second through hole on each of its two opposite sidewalls. The axes of the first through holes and the second through holes are parallel to the second direction. The fastener passes through the corresponding first through hole and second through hole in sequence and fixes the U-shaped bracket to the heat sink.

[0014] Furthermore, the width of the heat dissipation substrate in the second direction is greater than the distance between the two opposite end faces of the two fasteners.

[0015] Furthermore, the lamp also includes a plurality of second strip grooves disposed along the edge of the heat dissipation substrate.

[0016] Furthermore, the lamp also includes a base plate, the heat dissipation substrate is detachably disposed on the base plate, a third through hole is provided in the central area of ​​the base plate, the first strip groove and the third through hole at least partially overlap, and the two ends of the U-shaped bracket can pass through the third through hole and the corresponding first strip groove in sequence respectively.

[0017] Furthermore, the area of ​​the third through hole is larger than the area of ​​the light source assembly.

[0018] Furthermore, the second surface faces the base plate, and the base plate is provided with a plurality of buckles on the side facing the heat dissipation substrate. The buckles include a first part and a second part that are elastic. The first part is disposed on the base plate, and the second part is formed by the end of the first part that is away from the base plate and protrudes toward the center of the base plate.

[0019] Furthermore, the second portion has an inclined surface on one side facing the center of the heat dissipation substrate, the inclined surface gradually moving away from the first portion from the end opposite to the base plate to the end closer to the base plate.

[0020] Furthermore, the base plate is formed by connecting multiple mounting plates end to end. Each mounting plate has a protrusion and a groove at both ends. When two adjacent mounting plates are connected end to end, the protrusion is embedded in the groove.

[0021] The adjustable projection angle lamp provided by the present invention, compared with the prior art, has two first strip grooves opened on the heat dissipation substrate. The opposite ends of the U-shaped bracket pass through the corresponding first strip grooves and are fixedly connected to the two opposite side walls of the heat dissipation component. The two ends of the first strip grooves can limit the angle adjustment range between the U-shaped bracket and the heat dissipation substrate, thereby limiting the projection angle of the light source component located on the heat dissipation substrate and ensuring that the projection angle of the light source component is always kept within the required projection range. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of a lamp with adjustable projection angle provided in an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 A schematic diagram of the structure of a lamp with adjustable projection angle provided in an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 A dimensional relationship diagram of the heat dissipation substrate and the U-shaped bracket provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a lamp with an adjustable projection angle and a base plate provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the base plate of the adjustable projection angle lamp provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the mounting plate for an adjustable projection angle lamp provided in an embodiment of the present invention.

[0029] The following are the labeling elements in the figure:

[0030] 2-Heat dissipation assembly; 21-Heat dissipation substrate; 211-First surface; 212-Second surface; 213-First groove; 22-Heat dissipation component; 221-Second through hole; 3-U-shaped bracket; 31-First through hole; 4-Fastener; 5-Second groove; 6-Base plate; 61-Third through hole; 62-Snap fastener; 621-First part; 622-Second part; 623-Inclined surface; 7-Mounting plate; 71-Protrusion; 72-Groove; 8-First direction; 9-Second direction; 10-Third direction. Detailed Implementation

[0031] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] Please see Figure 1 and Figure 2The adjustable projection angle lamp provided by the present invention will now be described. The lamp includes a light source assembly (not shown) and a heat dissipation assembly 2. The heat dissipation assembly 2 includes an integrally formed heat dissipation substrate 21 and a heat dissipation element 22. The heat dissipation substrate 21 includes a first surface 211 and a second surface 212 facing each other. The heat dissipation element 22 is fixedly disposed on the first surface 211, and the light source assembly is disposed on the second surface 212. Two first strip grooves 213 are formed on the heat dissipation substrate 21, which penetrate the first surface 211 and the second surface 212 of the heat dissipation substrate 21 and extend along a first direction 8. The heat dissipation element 22 is located between the two first strip grooves 213, that is, the two first strip grooves 213 are respectively located on both sides of the heat dissipation element 22. The first direction 8 is a direction parallel to the second surface 212, and the first surface 211 and the second surface 212 are parallel.

[0036] The luminaire also includes a U-shaped bracket 3. The two opposite ends of the U-shaped bracket 3 pass through corresponding first strip grooves 213 and are fixedly connected to the two opposite sidewalls of the heat sink 22 by two fasteners 4. The U-shaped bracket 3 can stably support the heat sink 21 on a support, which can be the ground or a tabletop, depending on the environment in which the luminaire is used. Since the heat sink 22 is fixed to the heat sink 21, the two ends of the first strip grooves 213 can limit the angle adjustment range between the U-shaped bracket 3 and the heat sink 21, thereby limiting the angle adjustment range of the heat sink 21 relative to the support, and further limiting the projection angle of the light source component located on the heat sink 21, ensuring that the projection angle of the light source component is always kept within the required projection range. The projection angle can be selected and set according to actual needs. For example, when the luminaire needs to project downwards, the projection angle range can be 30°-50°, that is, the angle adjustment range of the heat sink 21 relative to the support is 30°-50°.

[0037] Specifically, the first strip groove 213 has a first end and a second end in the first direction 8. When it is necessary to adjust the projection angle of the light source assembly, the fastener 4 is loosened, allowing the U-shaped bracket 3 to rotate relative to the heat sink 22 about a straight line parallel to the second direction 9. The U-shaped bracket 3 is rotated until it abuts against the groove wall of the first end of the first strip groove 213. Then, the U-shaped bracket 3 and the heat sink 22 are fixed by the fastener 4. At this time, there is a first included angle between the U-shaped bracket 3 and the heat sink substrate 21, and correspondingly, the light source assembly has a first projection angle. The fastener 4 is then loosened, and the U-shaped bracket 3 is rotated until it abuts against the groove wall of the second end of the first strip groove 213. Then, the U-shaped bracket 3 and the heat sink 22 are fixed by the fastener 4. At this time, there is a second included angle between the U-shaped bracket 3 and the heat sink substrate 21, and correspondingly, the light source assembly has a second projection angle. In practical applications, the first and second projection angles can be determined according to the actual required projection range, thereby determining the relevant design parameters of the first strip groove 213. The second direction 9 is parallel to the second surface 212 and perpendicular to the first direction 8.

[0038] Compared with the prior art, the adjustable projection angle lamp provided by the present invention has two first strip grooves 213 formed on the heat dissipation substrate 21. The opposite ends of the U-shaped bracket 3 pass through the corresponding first strip grooves 213 and are fixedly connected to the two opposite side walls of the heat dissipation component 22. The two ends of the first strip grooves 213 can limit the angle adjustment range between the U-shaped bracket 3 and the heat dissipation substrate 21, thereby limiting the projection angle of the light source component located on the heat dissipation substrate 21 and ensuring that the projection angle of the light source component is always kept within the required projection range.

[0039] The width of the first slot 213 in the second direction 9 need only be sufficient for the U-shaped bracket 3 to pass through; this is not limited. In one embodiment, such as... Figure 3 As shown, the length of the first strip groove 213 in the first direction 8 satisfies the following relationship:

[0040] D = L2 - L1

[0041]

[0042]

[0043] Wherein, H1 is the distance from the pivot of the U-shaped bracket 3 to the first surface 211, H2 is the distance from the pivot of the U-shaped bracket 3 to the second surface 212, L1 is the distance from the projection of the pivot of the U-shaped bracket 3 onto the first end of the corresponding first strip groove 213 on the first surface 211, L2 is the distance from the projection of the pivot of the U-shaped bracket 3 onto the second end of the corresponding first strip groove 213, W is the width of the U-shaped bracket 3; θ is the angle between the extension direction of the U-shaped bracket 3 and the third direction 10, θ1 is the angle corresponding to when the U-shaped bracket 3 is rotated to abut against the groove wall of the first end of the first strip groove 213; θ2 is the angle corresponding to when the U-shaped bracket 3 is rotated to abut against the groove wall of the second end of the first strip groove 213; the third direction 10 is perpendicular to the first direction 8 and the second direction 9; D is the length of the first strip groove 213 in the first direction 8. Thus, by changing the relevant design parameters of the first strip 213, the light projection range of the lamp can be changed. For lamps with different light projection ranges, the same U-shaped bracket 3 can be used, that is, the U-shaped bracket 3 can be compatible with lamps with multiple light projection ranges, thereby reducing production costs.

[0044] It should be noted that the pivot of the U-shaped bracket 3 involved in this application refers to the pivot of the U-shaped bracket 3 and the heat sink 22 that rotate relative to each other, which is also the central axis of the fastener 4. The extension direction of the U-shaped bracket 3 refers to the extension direction of both ends of the U-shaped bracket 3 from the bottom of the U-shaped bracket 3 away from the bottom.

[0045] In one embodiment, such as Figure 3 and Figure 4 As shown, the U-shaped bracket 3 has first through holes 31 at both opposite ends, and the heat sink 22 has corresponding second through holes 221 on both opposite sidewalls. The axes of the first through holes 31 and the second through holes 221 are parallel to the second direction 9, and both fasteners 4 extend along the second direction 9. The fasteners 4 pass through the corresponding first through holes 31 and second through holes 221 in sequence to fix the U-shaped bracket 3 and the heat sink 22. Specifically, the fasteners 4 can be screws, and the first through holes 31 and the second through holes 221 can both be screw holes.

[0046] In one embodiment, the width of the heat dissipation substrate 21 in the second direction 9 is greater than the distance between the two opposite end faces of the two fasteners 4. Thus, when viewed from the side of the heat dissipation substrate 21 where the light source assembly is located, facing the lamp fixture, the heat dissipation substrate 21 can block the two fasteners 4, thereby improving the aesthetics of the lamp fixture during use.

[0047] In one embodiment, such as Figure 1 and Figure 4As shown, the luminaire also includes a plurality of second strip grooves 5 disposed along the edge of the heat dissipation substrate 21. This reduces the material of the heat dissipation substrate 21, lowering the cost of the luminaire. When the luminaire has a base plate 6, a protrusion can be provided on the base plate 6, and the protrusion can be accommodated within the second strip grooves 5 to achieve mounting of the base plate 6 and the heat dissipation substrate 21. Furthermore, the second strip grooves 5 can optionally be disposed at two other edges of the heat dissipation substrate 21, or at the same two edges as the first strip groove 213; there is no limitation in this regard. The second strip grooves 5 can also serve the function of the first strip groove 213. For example, when the luminaire needs to have two different illumination ranges, the design parameters of the first strip groove 213 and the second strip groove 5 can be selected according to the two illumination ranges respectively. The first strip groove 213 restricts the first illumination range, and the second strip groove 5 restricts the second illumination range, thus improving the applicability of the luminaire. The length, shape, and extension direction of the second strip groove 5 and the first strip groove 213 can be the same or different, depending on actual needs.

[0048] In one embodiment, such as Figure 4 and Figure 5 As shown, the lamp also includes a base plate 6, and a heat dissipation substrate 21 is detachably mounted on the base plate 6. The base plate 6 can prevent dust and provide some protection for the heat dissipation substrate 21. The detachable mounting of the heat dissipation substrate 21 on the base plate 6 makes it easy to disassemble, repair or replace the base plate 6 or the heat dissipation substrate 21. A third through hole 61 is provided in the central area of ​​the base plate 6. The first strip groove 213 and the third through hole 61 at least partially overlap, so that the two ends of the U-shaped bracket 3 can pass through the third through hole 61 and the corresponding first strip groove 213 in sequence.

[0049] In one embodiment, the area of ​​the third through-hole 61 is larger than the area of ​​the light source assembly. This prevents the base plate 6 from blocking the light emitted by the light source assembly. The shapes of the light source assembly and the third through-hole 61 can be the same or different; they can be regular, such as square or circular, or irregular, depending on actual needs. Taking a circular light source assembly as an example, when the shape of the third through-hole 61 is the same as that of the light source assembly, the diameter of the third through-hole 61 is larger than the diameter of the light source assembly. When the shape of the third through-hole 61 is different from that of the light source assembly, for example, when the shape of the third through-hole 61 is square, the smallest side length of the third through-hole 61 is larger than the diameter of the light source assembly.

[0050] In one embodiment, such as Figure 4 and Figure 6As shown, the second surface 212 faces the base plate 6. The base plate 6 has a plurality of buckles 62 on the side facing the heat dissipation substrate 21. The buckles 62 include a first part 621 and a second part 622 that are elastic. The first part 621 is disposed on the base plate 6, and the second part 622 protrudes from the end of the first part 621 away from the base plate 6 toward the center of the base plate 6. Taking the third direction 10 as the vertical direction, with the heat dissipation substrate 21 as the upper side and the base plate 6 as the lower side as an example, when the heat dissipation substrate 21 needs to be installed on the base plate 6, the second surface 212 of the heat dissipation substrate 21 contacts the upper surface of the second part 622 of the buckle 62 and has a certain angle. The heat dissipation substrate 21 applies pressure to the second part 622 of the buckle 62. Under pressure, the second part 622 and the first part 621 of the buckle 62 deform in a direction away from the center of the base plate 6, so that the heat dissipation substrate 21 moves to contact the base plate 6. The first part 621 and the second part 622 of the buckle 62 return to a direction closer to the center of the base plate 6, so that the heat dissipation substrate 21 is limited to the base plate 6 and the buckle 62. When it is necessary to remove the heat dissipation substrate 21 from the base plate 6, the user can manually bend the buckle 62 in a direction away from the center of the base plate 6 to deform it, so that the heat dissipation substrate 21 can be separated from the base plate 6.

[0051] Furthermore, such as Figure 6 As shown, the second part 622 has an inclined surface 623 on the side facing the center of the heat dissipation substrate 21. The inclined surface 623 gradually moves away from the first part 621 from the end away from the base plate 6 to the end close to the base plate 6. This makes it more convenient to install the heat dissipation substrate 21 and the base plate 6.

[0052] In one embodiment, such as Figure 5 As shown, the base plate 6 is formed by multiple mounting plates 7 connected end to end. Each end of a mounting plate 7 has a protrusion 71 and a groove 72. When two adjacent mounting plates 7 are connected end to end, the protrusion 71 is embedded in the groove 72, eliminating the need for screws and facilitating easy assembly and disassembly, thus reducing maintenance workload. The shape and number of mounting plates 7 can be selected based on the specific shape of the base plate 6. In this embodiment, the base plate 6 is square, the mounting plates 7 can be isosceles trapezoids, and there are four mounting plates 7. The protrusion 71 and groove 72 can be respectively located on the two sides of the isosceles trapezoid.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lamp with an adjustable projection angle, characterized in that, include: Light source components; A heat dissipation assembly includes a heat dissipation substrate and a heat dissipation component. The heat dissipation substrate includes a first surface and a second surface opposite to each other. The heat dissipation component is disposed on the first surface, and the light source assembly is disposed on the second surface. Two first strip-shaped grooves are formed on the heat dissipation substrate and extend along a first direction. The heat dissipation component is located between the two first strip-shaped grooves. The U-shaped bracket has its opposite ends passing through the corresponding first strip grooves and being fixedly connected to the two opposite side walls of the heat sink by two fasteners. When the fasteners are loosened, the U-shaped bracket can rotate relative to the heat sink about a straight line parallel to the second direction as its axis of rotation, and the first direction is perpendicular to the second direction.

2. The adjustable projection angle lamp as described in claim 1, characterized in that, The length of the first groove in the first direction satisfies the following relationship: D = L2 - L1 The first strip groove has a first end and a second end in a first direction; Wherein, H1 is the distance from the axis of rotation of the U-shaped bracket to the first surface, H2 is the distance from the axis of rotation of the U-shaped bracket to the second surface, L1 is the distance from the projection of the axis of rotation of the U-shaped bracket on the first surface to the first end of the corresponding first strip groove, L2 is the distance from the projection of the axis of rotation of the U-shaped bracket on the first surface to the second end of the corresponding first strip groove, W is the width of the U-shaped bracket; θ1 is the angle between the extension direction of the U-shaped bracket and a third direction when the U-shaped bracket is rotated to abut against the groove wall at the first end of the first strip groove; θ2 is the angle between the extension direction of the U-shaped bracket and the third direction when the U-shaped bracket is rotated to abut against the groove wall at the second end of the first strip groove; the third direction is perpendicular to the first direction and the second direction.

3. The adjustable projection angle lamp as described in claim 1, characterized in that, The U-shaped bracket has a first through hole at each of its two opposite ends, and the heat sink has a corresponding second through hole on each of its two opposite sidewalls. The axes of the first through holes and the second through holes are parallel to the second direction. The fastener passes through the corresponding first through hole and second through hole in sequence and fixes the U-shaped bracket to the heat sink.

4. The adjustable projection angle lamp as described in claim 3, characterized in that, The width of the heat dissipation substrate in the second direction is greater than the distance between the two opposite end faces of the two fasteners.

5. The adjustable projection angle lamp as described in claim 1, characterized in that, The lamp also includes a plurality of second strip grooves disposed along the edge of the heat dissipation substrate.

6. The luminaire with adjustable projection angle as described in any one of claims 1 to 5, characterized in that, The lamp also includes a base plate, and the heat dissipation substrate is detachably disposed on the base plate. A third through hole is provided in the central area of ​​the base plate, and the first strip groove and the third through hole at least partially overlap. The two ends of the U-shaped bracket can pass through the third through hole and the corresponding first strip groove in sequence, respectively.

7. The adjustable projection angle lamp as described in claim 6, characterized in that, The area of ​​the third through hole is larger than the area of ​​the light source component.

8. The adjustable projection angle lamp as described in claim 6, characterized in that, The second surface faces the base plate, and the base plate has a plurality of buckles on the side facing the heat dissipation substrate. The buckles include a first part and a second part that are elastic. The first part is disposed on the base plate, and the second part is formed by the end of the first part that is away from the base plate and protrudes toward the center of the base plate.

9. The adjustable projection angle lamp as described in claim 8, characterized in that, The second portion has an inclined surface on one side facing the center of the heat dissipation substrate, and the inclined surface gradually moves away from the first portion from the end opposite to the base plate to the end closer to the base plate.

10. The adjustable projection angle lamp as described in claim 6, characterized in that, The base plate is formed by connecting multiple mounting plates end to end. Each mounting plate has a protrusion and a groove at both ends. When two adjacent mounting plates are connected end to end, the protrusion is embedded in the groove.

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