JP3228536U - Downlight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a downlight having high versatility for mounting holders having different heights. A downlight includes a turntable 1, a heat dissipation assembly 3 provided at one end of the turntable 1, a height adjusting member 2 having one end rotatably connected to the turntable 1, and heat dissipation. It has a light source assembly installed inside the assembly 3. An elongated adjustment hole is provided in the height adjusting member 2 so as to adjust the relative height between the heat radiating assembly 3 and the turntable 1. The heat dissipation assembly 3 can reciprocate in the longitudinal direction of the adjustment hole together with the slide element inserted in the adjustment hole. The height of the entire downlight can be adjusted. [Selection diagram] Fig. 1

Description

The present invention belongs to the technical field of lighting, and particularly relates to downlights.

The downlight is a product that has been improved and developed based on conventional lighting equipment, and it looks good, is compact, and saves space. The downlight can be installed while maintaining its integrity with the interior of the building, so it does not impair the installation of lighting equipment. In addition, the light source is hidden inside the interior of the building, can create a soft atmosphere, does not protrude, has a non-glare, soft and uniform visual effect. Multiple downlights can be placed to reduce the feeling of oppression in the space and create a warm atmosphere, so they are often used in hotels, homes, and cafes.

However, conventional downlights have the same height during molding and can only be mounted on mounting holders having the corresponding heights. That is, the conventional downlight cannot be used for mounting holders having different heights, and it is difficult to meet the usage demands of consumers.

An object of the present invention is to provide a downlight that can solve a technical problem in which the duality of a conventional downlight is low.

The present invention is realized as follows.

The downlight is
Turntable and
A height adjusting member whose one end is rotatably connected to the turntable and which has an elongated adjusting hole.
Heat dissipation provided at one end of the turntable and capable of reciprocating in the longitudinal direction of the adjustment hole together with a slide element inserted in the adjustment hole so as to adjust the relative height with the turntable. Assembly and
It has a light source assembly installed in the heat dissipation assembly.

Further, the height adjusting member is rotatably connected to both sides opposite to the turntable, and slide blocks as the slide elements are provided on both sides opposite to the heat dissipation assembly, respectively. It is fitted in the adjusting hole of the corresponding height adjusting member and can be reciprocated in the adjusting hole.

Further, the adjusting hole is a track hole extending in a direction from an end adjacent to the turntable to an end adjacent to the heat dissipation assembly.

Further, the heat dissipation assembly includes a first heat dissipation member connected to the height adjusting member and a second heat dissipation member connected to an end of the first heat dissipation member separated from the turntable, and the light source. The assembly is installed on the first heat dissipation member,
The first heat radiating member includes a main body portion and protrusions provided on opposite sides of the main body portion, respectively, and the protrusion portion together with the slide element inserted into the corresponding adjustment hole is said to be high. It is fixed to the adjustment member.

Further, the downlight further has a first tightening member for tightening and fixing the protrusion to the height adjusting member.

Further, the turntable has a hollow chamber, and the end of the main body portion separated from the second heat radiating member is inserted into the hollow chamber so as not to interfere with the rotation of the first heat radiating member. A notch for avoidance was opened on the turntable,
The shape of the side of the second heat radiating member corresponding to the avoiding notch is adjusted to match the avoiding notch so as not to interfere with the rotation of the second heat radiating member.

Further, the range of the rotation angle of the height adjusting member with respect to the central axis of the turntable is −15 ° to 30 °, and the range of the rotation angle of the heat dissipation assembly with respect to the central axis of the turntable is. It is 0 ° to 45 °.

Further, the downlight further has a band-shaped ring that is ringed outside the turntable and is rotatable with respect to the turntable.

Further, an annular concave groove is provided on the outside of the turntable, and a plurality of elastic pieces engaging in the annular concave groove in the circumferential direction are provided on the inner wall of the band-shaped ring, and the inner wall of the band-shaped ring is provided. A first position limiting protrusion is further provided to prevent the band-shaped ring from coming off the turntable.

Further, the downlight is installed at an end of the heat dissipation assembly close to the turntable and a decorative member that is detachably inserted inside the turntable, and is dentate fine for antiglare inside. It further has a pressing ring on which the structure is provided.

The downlight according to the present invention is installed inside the turntable, the heat dissipation assembly provided at one end of the turntable, the height adjusting member having one end rotatably connected to the turntable, and the heat dissipation assembly. It has a light source assembly. An adjustment hole is provided in the height adjusting member so as to adjust the relative height between the heat dissipation assembly and the turntable, and the heat dissipation assembly reciprocates in the longitudinal direction of the adjustment hole together with the slide element inserted in the adjustment hole. You can move. Since the heat dissipation assembly can be reciprocated in the longitudinal direction of the adjustment hole of the height adjusting member, the height of the entire downlight can be adjusted, and it can be applied to mounting holders having different heights. Regarding the versatility for mounting holders having different heights, the versatility of the downlight according to the present invention is higher than that of the conventional downlight.

In order to more clearly explain the technical proposal in the embodiment of the present invention, the drawings necessary for explaining the embodiment or the prior art will be briefly described below. The drawings described are only of some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without using the ability to invent.
It is a schematic perspective block diagram of the downlight by the Example of this invention. It is a schematic disassembled block diagram of the downlight by the Example of this invention. It is a schematic cross-sectional block diagram of the downlight by the Example of this invention. It is a schematic diagram which shows the rotation of the height adjusting member of the downlight by the Example of this invention. It is a schematic diagram which shows the rotation of the height adjusting member of the downlight by the Example of this invention. It is a schematic disassembled block diagram of a decorative ring and a turntable according to the Example of this invention. It is a schematic disassembled block diagram of the light source assembly according to the Example of this invention. It is a schematic disassembled block diagram of the heat dissipation assembly by the Example of this invention.

In order to clarify the purpose, technical proposal and advantages of the present invention, the present invention will be described in more detail below with reference to drawings and examples. The specific examples described are merely for interpreting the present invention and are not intended to limit the present invention.

When one part is "fixed" or "installed" to another part, the part may be placed directly or indirectly on the other part. When one component is "connected" to another component, the component may be directly or indirectly connected to the other component. The directions or positional relationships expressed in terms such as "top", "bottom", "left", and "right" are based on the drawings and are for the sake of simplicity only. The present invention is not limited because it does not necessarily indicate or imply that the element has a predetermined direction or is configured or operated in a predetermined direction. The terms "first" and "second" are for illustration purposes only and do not imply or imply relative importance or imply a number of technical features. "Multiple" means more than one, unless otherwise specified and specifically limited.

In order to explain the above-mentioned technical proposal of the present invention, the following will be described in detail with reference to specific drawings and examples.

As shown in FIGS. 1 to 3, the downlight according to the embodiment of the present invention has a rotating table 1, a height adjusting member 2, a heat radiating assembly 3, and a light source assembly 4.

One end of the height adjusting member 2 is rotatably connected to the turntable 1, and an elongated adjusting hole 21 is provided in the height adjusting member 2. Specifically, one end of the height adjusting member 2 can be rotatably connected to the side surface of the rotating table 1, but the present invention is not limited to this.

The heat radiating assembly 3 is provided at one end of the rotating table 1, and the slide block 3121 is fitted and connected to a part of the heat radiating assembly 3 so as to adjust the relative height between the heat radiating assembly 3 and the rotating table 1. A part of it is inserted in the adjusting hole 21 and can be reciprocated in the longitudinal direction of the adjusting hole 21 in the adjusting hole 21.

The light source assembly 4 is installed inside the heat dissipation assembly 3. However, the above height refers to a dimension in a direction parallel to the central axis of the turntable 1.

The downlight according to the embodiment of the present invention includes a turntable 1, a heat dissipation assembly 3 provided at one end of the turntable 1, and a height adjusting member 2 having one end rotatably connected to the turntable 1. It has a light source assembly 4 installed inside the heat dissipation assembly 3. A part of the slide block 3121 in which an adjusting hole 21 is provided in the height adjusting member 2 so as to adjust the relative height between the heat radiating assembly 3 and the turntable 1 and is fitted and connected to a part of the heat radiating assembly 3. Is inserted into the adjusting hole 21 and can move back and forth in the adjusting hole 21. Since the heat dissipation assembly 3 can be moved together with the slide block 3121, which can be reciprocated in the adjustment hole 21 in the height adjusting member 2, the height of the entire downlight can be adjusted so that it can be applied to mounting holders having different heights. Become. Regarding the duality of the downlight for mounting holders having different heights, the duality of the downlight according to the present invention is higher than that of the conventional downlight.

Specifically, the downlight further includes a first tightening member (not shown) for fixedly connecting the heat dissipation assembly 3 to the height adjusting member 2 having the adjusting hole 21. Bolts can be used as the first tightening member, but the first tightening member is not limited to this. By connecting the first tightening member to the nut through the slide block 3121, which is inserted into the adjusting hole 21, and the heat radiating assembly 3, the heat radiating assembly 3 is fixedly connected to the height adjusting member 2 having the adjusting hole 21. At the same time, it is possible to realize a rotatable connection between one end of the height adjusting member 2 and the turntable 1. Depending on the actual situation, a rotatable connection between one end of the height adjusting member 2 and the turntable 1 may be realized by another connection method, and the present invention is not limited to this.

Further, as shown in FIG. 2, as one specific embodiment of the downlight according to the present invention, the heat radiating assembly 3 includes a first heat radiating member 31 connected to the height adjusting member 2 and a first heat radiating member. A light source assembly 4 is installed on the first heat radiating member 31, including a second heat radiating member 32 connected to an end of the 31 that is separated from the turntable 1.

Specifically, as shown in FIGS. 2, 7 and 8, the accommodating chamber 3111 is provided in the first heat radiation member 31. The light source assembly 4 includes a COB (Chip On Board) light source 42, a light source holder 43, a lens 44, and a reflection cup 45, each housed in a housing chamber 3111. The COB light source 42 is installed at the bottom of the accommodation chamber 3111 and can emit light in the opening direction of the accommodation chamber 3111. The light source holder 43 is installed on the side of the COB light source 42 away from the bottom of the accommodating chamber 3111, and is for fixing the COB light source 42 to the bottom of the accommodating chamber 3111. The lens 44 is installed on the side of the light source holder 43 away from the COB light source 42 and is used for condensing. The reflection cup 45 is installed on the side of the lens 44 away from the light source holder 43 to improve the light extraction efficiency. The downlight according to the present invention is superior in light collection effect and light extraction efficiency as compared with the conventional downlight.

Specifically, the lens 44 includes a light collecting unit 441 provided in the vicinity of the reflection cup 45 and used for light collecting. The reflection cup 45 has a hollow structure, the diameter gradually increases in the direction from the lens 44 to the moving table 1, and the reflection cup 45 accommodates the condensing portion 441 of the lens 44 in the chamber of the reflection cup 45. It is overlaid on 44. In this embodiment, the size of the lens 44 is relatively small, and the reflection cup 45 has a constant depth, that is, the depth of the chamber of the reflection cup 45 is larger than the height of the condensing portion 441 of the lens 44. Therefore, the reflection cup 45 can completely accommodate the light collecting portion 441 in the chamber of the reflection cup 45, and can effectively improve the light extraction efficiency.

Specifically, since the diameter of the reflective cup 45 gradually increases in the direction from the lens 44 to the turntable 1 and is covered by the lens 44, the heat generated when the COB light source 42 operates is generated by the cup mouth of the reflective cup. It is swept away and gathers around there. In order to solve the problem of heat dissipation, it is preferable to use a reflective cup 45 made of a metal material such as an aluminum alloy or iron. Since the above metal material has excellent thermal conductivity, heat is conducted to the first heat radiating member 31 by the reflective cup 45, and the temperature inside the accommodating chamber 3111 of the reflective cup 45, the lens 44 and the first heat radiating member 31 is adjusted. It can contribute to the reduction. In order to realize the heat dissipation effect and reduce the cost, it is preferable to make the wall thickness of the reflective cup 45 as thin as possible.

Specifically, the downlight according to the present invention further includes a second tightening member (not shown) for mounting the light source assembly 4 inside the first heat radiation member 31, and includes a lens 44, a light source holder 43, a COB light source 42, and the like. The first heat radiating member 31 and the second heat radiating member 32 are integrally connected by the same second tightening member. Bolts can be used as the second tightening member, but the second tightening member is not limited to this.

The COB light source 42 is inferior in pressure resistance, and in order to avoid crushing the COB light source 42, it is preferable that a spacer 8 is installed between the bottom of the accommodating chamber 3111 and the COB light source 42. Since the spacer 8 has elasticity, it can serve as a buffer and prevent the COB light source 42 from being crushed.

Specifically, as shown in FIGS. 7 and 8, the lens 44 is provided with at least two mounting portions 442 recessed toward the light source holder 43. The light source holder 43 is provided with a mounting groove 431 for fitting the mounting portion 442 (see FIG. 2). A light source groove 434 for mounting the COB light source 42 is provided on the side of the light source holder 43 away from the lens 44. A first mounting hole 443 is opened in the mounting portion 442, a second mounting hole 433 is opened at the bottom of the mounting groove 431, and a third mounting hole 3113 is opened at the bottom of the accommodating chamber 3111 of the first heat radiation member 31. 2 The fourth mounting hole 3221 is opened in the heat radiating member 32. The second tightening member passes through the first mounting hole 443, the second mounting hole 433, and the third mounting hole 3113 in this order and is screwed to the fourth mounting hole 3221 to connect the lens 44, the light source holder 43, and the COB light source. 42, the first heat radiating member 31 and the second heat radiating member 32 are integrally connected. Depending on the actual situation, the second tightening member is passed through the first mounting hole 443, the second mounting hole 433, the third mounting hole 3113, and the fourth mounting hole 3221 in this order and screwed to the nut. The lens 44, the light source holder 43, the COB light source 42, the first heat radiating member 31 and the second heat radiating member 32 may be integrally connected.

The lens 44 and the light source holder 43 are made of plastic material. In order to simplify the assembly process, the lens 44 and the light source holder 43 can be manufactured by integral molding. As a specific material, it can be selected based on the power and temperature of the downlight, and for example, a high temperature resistant polycarbonate (PC) material can be used.

The lens 44 and the light source holder 43 are made of a plastic material, and the lens 44 and the light source holder 43 can be separated from each other by injection molding. As a specific material, it can be selected based on the power and temperature of the downlight, and for example, a high temperature resistant polycarbonate material can be used. In this embodiment, the light source holder 43 is made of a light-shielding material and the lens 44 is made of a transparent material so as to prevent light loss.

Specifically, the adjusting hole 21 is a track hole extending in the direction from the end adjacent to the turntable 1 to the end adjacent to the heat dissipation assembly 3. The shape of the adjusting hole 21 can be appropriately changed according to the actual situation, and is not limited in the present invention.

Further, as shown in FIG. 2, as one specific embodiment of the downlight according to the present invention, the first heat radiating member 31 is the opposite of the main body 311 provided with the accommodating chamber 3111 and the main body 311 respectively. Includes protrusions 312 provided on both sides. A third mounting hole 3113 is provided in the main body 311. A part of the slide block 3121, which is fitted and connected to the protrusion 312, is inserted into the corresponding adjusting hole 21 and can be reciprocated along the longitudinal direction in the adjusting hole 21.

Preferably, the height adjusting member 2 is rotatably connected to both sides of the rotating table 1 opposite to each other, and the slide block 3121 is provided on the side of the protruding portion 312 away from the main body portion 311. That is, the heat dissipation assembly 3 Slide blocks 3121 are provided on both sides opposite to each other. The slide block 3121 includes a main plate portion along the end surface of the projecting portion 312, an annular flange projecting to one surface side of the main plate portion, a guided convex portion projecting to the other surface side of the main plate portion, and the covered portion. Includes an insertion hole that penetrates the guide protrusion and through which the first tightening member is inserted. The annular flange is externally fitted and connected to the protrusion 312. The guided convex portion of the slide block 3121 is fitted in the adjusting hole 21 of the corresponding height adjusting member 2, and is guided in the adjusting hole 21 in the longitudinal direction of the adjusting hole 21 so that it can reciprocate. ..

Specifically, the insertion hole and the protrusion of the slide block 3121 in which the guided convex portion is inserted and fitted into the adjustment hole 21 from the side where the first tightening member is separated from the protrusion 312 of the slide block 3121. By being sequentially inserted into the insertion holes of 312 and connected to the nut, the protruding portion 312 and the main plate portion of the slide block 3121 are formed between the nut and the head of the bolt as the first tightening member. , The height adjusting member 2 having the adjusting hole 21 is sandwiched and fastened to each other. When the slide block 3121 slides in the adjustment hole 21, the heat dissipation assembly 3 can also slide along the longitudinal direction of the adjustment hole 21. Therefore, the distance between the heat dissipation assembly 3 and the turntable 1 can be changed to downlight. The height of the can be adjusted. A bolt as the first tightening member may be screwed and fixed to the screw hole of the protrusion 312 without using a nut. Depending on the actual situation, a slidable connection between the protrusion 312 and the adjustment hole 21 may be realized by using another method, and the present invention is not limited to this.

Further, as shown in FIGS. 1, 2 and 6, the turntable 1 has a hollow chamber 11. The end of the main body 311 separated from the second heat radiating member 32 is inserted into the hollow chamber 11. An avoidance notch 12 is provided on the side wall of the turntable 1 so as not to interfere with the rotation of the first heat dissipation member 31, and the side of the second heat dissipation member 32 corresponding to the avoidance notch 12 is cut off. By matching the shape of the second heat radiating member 32 on the side corresponding to the avoiding notch 12 with the avoiding notch 12, the rotation of the second heat radiating member 32 is prevented from interfering with the rotation. In this embodiment, as shown in FIGS. 4 and 5, when the height adjusting member 2 rotationally drives the first heat radiating member 31 and the second heat radiating member 32 with respect to the rotating table 1, the rotating table 1 The avoidance notch 12 is provided in the above, and the shape of the second heat radiation member 32 corresponding to the avoidance notch 12 is matched with the avoidance notch 12, so that the first heat radiation member 31 and the second heat radiation member 32 can be rotated. It will not interfere with the movement.

Further, as shown in FIGS. 2 to 5, a first limiting portion 22 for contacting the side wall of the avoidance notch 12 is provided on one side of the height adjusting member 2, and the turntable 1 has a height. A second limiting portion 13 is provided to abut the side of the adjusting member 2 that is separated from the first limiting portion 22. By providing the first limiting portion 22 and the second limiting portion 13, the rotation angle of the height adjusting member 2 can be limited.

The range of the rotation angle of the height adjusting member 2 with respect to the central axis of the turntable 1 is set to -15 ° to 30 °, and the range of the rotation angle of the first heat radiation member 31 with respect to the central axis of the turntable 1 is set to 0 °. Can be ~ 45 °. Sufficient volume for heat dissipation of the second heat radiation member 32 by suppressing the volume to be cut off on the side corresponding to the avoidance notch 12 of the second heat radiation member 32 while ensuring an adjustable range of the irradiation angle of the downlight. Can be kept.

Further, as shown in FIG. 2, the downlight further has a band-shaped ring 5 which is ringed outside the turntable 1 and is rotatable with respect to the turntable 1. The strip ring 5 is removably connected to the downlight mounting holder. Since the band-shaped ring 5 is rotatable with respect to the rotating table 1, by installing the band-shaped ring 5 in the mounting holder, the rotating table 1 is rotated with respect to the band-shaped ring 5 to irradiate the downlight. The angle can be adjusted.

Preferably, an annular groove 14 is provided on the outside of the turntable 1, and a plurality of elastic pieces 51 that engage with the annular groove 14 in the circumferential direction thereof are provided on the inner wall of the band-shaped ring 5. When the elastic piece 51 comes into close contact with the annular groove 14, the band-shaped ring 5 is installed on the turntable 1 and can rotate with respect to the turntable 1. Depending on the actual situation, the rotation of the band-shaped ring 5 with respect to the rotating table 1 may be realized by using another method, and the present invention is not limited to this.

Specifically, two annular brims are provided on the outer wall of the turntable 1 at intervals, and a portion between the two annular brims is an annular concave groove 14. A first position limiting projection 52 for preventing the band-shaped ring 5 from coming off the turntable 1 is further provided on the inner wall of the band-shaped ring 5. The end face of the first position limiting protrusion 52 separated from the heat dissipation assembly 3 abuts on the end face of the annular brim provided near the heat dissipation assembly 3 of the turntable 1, so that the band-shaped ring 5 is formed. It is possible to prevent the turntable 1 from coming off.

Specifically, the downlight further has a pressing ring 6 installed at an end adjacent to the turntable 1 of the heat dissipation assembly 3. Specifically, the pressing ring 6 is installed at an end of the first heat radiating member 31 adjacent to the rotating table 1, and a second position limiting projection 61 is provided on the inner peripheral surface of the pressing ring 6, and the second position limiting projection 61 is provided. The light source assembly 4 is fixed in the accommodating chamber 3111 of the first heat radiating member 31 by abutting the end of 61 close to the first heat radiating member 31 with the end of the reflection cup 45 adjacent to the turntable 1. Further, the pressing ring 6 is black as a whole, and a tooth-like fine structure for anti-glare is further provided on the inner peripheral surface. Since the dentate microstructure is specifically located on the side of the second position limiting protrusion 61 close to the turntable 1, it can play a role of anti-glare.

The pressing ring 6 and the first heat radiating member 31 can be removably connected, and specifically, a screw connection can be used, but the present invention is not limited to this. For example, by providing a female screw on the pressing ring 6 and providing a male screw to be matched with the female screw on the first heat radiating member 31, a screw connection between the pressing ring 6 and the first heat radiating member 31 is realized. Depending on the actual situation, the pressing ring 6 and the first heat radiating member 31 may be detachably connected by using another method.

Further, as shown in FIGS. 2 and 6, the downlight further includes a decorative member 7 that is removably inserted inside the turntable 1. Specifically, the decorative member 7 has an annular shape, and the decorative member 7 having a different color can be replaced inside the turntable 1 according to each user's request. When the first heat radiating member 31 slides in the adjusting hole 21 along the direction away from the turntable 1, the light emitted from the COB light source 42 via the reflection cup 45 and the lens 44 is projected onto the decorative member 7. Since light of different colors can be projected by reflection or refraction by the decorative member 7 of different colors, different atmospheres can be created according to the user's request.

In order to further enhance the anti-glare effect, it is preferable to provide a tooth-like microstructure for anti-glare on the inner surface of the decorative member 7. Therefore, it is possible to suppress visual discomfort, reduce the visual condition for visually recognizing an object, and greatly improve the user's experience of use.

Specifically, the decorative member 7 is provided with an avoidance protrusion 71 for avoiding the rotation connection structure between the height adjusting member 2 and the turntable 1, and the avoidance protrusion 71 is provided with an engagement groove 72. , The engaging member 15 is provided on the turntable 1. By engaging the engaging member 15 with the engaging groove 72, a removable connection between the turntable 1 and the decorative member 7 is realized.

Further, as shown in FIG. 8, in order to improve the heat dissipation efficiency of the second heat dissipation member 32, the second heat dissipation member 32 has a tree branch shape. Specifically, the second heat radiating member 32 is formed by extending from the central portion 321, at least three main trunk portions 322 formed by extending from the central portion 321 to the periphery, and extending from the main trunk portion 322 to the opposite sides. Includes at least one branch 323. A protrusion 3211 is provided at an end of the central portion 321 adjacent to the first heat radiating member 31, and a fourth mounting hole 3221 is provided in the main trunk portion 322. Since the thickness of the main trunk portion 322 gradually decreases in the direction from the central portion 321 to the periphery, the weight of the second heat radiating member 32 can be suppressed. In the embodiment, the second heat radiating member 32 is formed by one central portion 321 and six main trunk portions 322 formed by extending evenly from the central portion 321 to the periphery, and extending outward from the main trunk portion 322. Includes at least two branches 323 and the like. The number of the central portion 321 and the main trunk portion 322 and the branch portion 323 can be appropriately changed, and is not limited in the present invention.

Specifically, in order to guarantee the heat dissipation efficiency of the second heat radiation member 32, a plurality of ribs 3231 are provided on both sides opposite to each other of the branch portion 323. By forming a wavy structure on the side surface of the branch portion 323, the heat dissipation area on the side surface of the branch portion 323 can be increased, and the heat dissipation efficiency can be significantly improved. In this embodiment, the distance between the ribs 3231 in the two adjacent branch portions can be 5 mm or more in order to facilitate the natural convection between the adjacent branch portions 323. As a result, the heat dissipation efficiency can be further improved, and the weight of the second heat dissipation member 32 can be further suppressed.

In the downlight according to the embodiment of the present invention, the height of the second heat radiating member 32 can be increased in order to improve the heat radiating efficiency. It is preferable that the height of the second heat radiating member 32 is 50 mm to 70 mm based on the height limitation of the entire light. For example, the height of the second heat radiating member 32 can be set to 63 mm. Further, since the heat radiation area is increased, the diameter of the second heat radiation member 32 can be increased. It is preferable that the diameter of the second heat radiating member 32 is 10 mm to 30 mm larger than the diameter of the first heat radiating member 31 based on the limitation of the rotation angle of the heat radiating assembly 3. For example, the diameter of the second heat radiating member 32 can be made 20 mm larger than the diameter of the first heat radiating member 31.

Further, as shown in FIG. 8, a through-hole 3112 is provided at the bottom of the accommodating chamber 3111 of the first heat-dissipating member 31, and at the end of the second heat-dissipating member 32 near the first heat-dissipating member 31, inside the through-hole 3112. A protrusion 3211 to be fitted is provided, that is, the protrusion 3211 is a part of the bottom surface of the accommodating chamber 3111. Since the protrusion 3211 comes into contact with the spacer 8, the thermal resistance is reduced, and the heat conduction is excellent, the COB light source 42 can conduct heat to the second heat radiating member 32 via the spacer 8 and the protrusion 3211. In this embodiment, the thickness of the protrusion 3211 is the same as the thickness of the bottom surface of the accommodating chamber 3111. The spacer 8 is a heat conductive insulating material, and specifically, a heat conductive silicone rubber sheet can be used, but the spacer 8 is not limited to this. The area of the thermally conductive silicone rubber sheet is larger than the area of the COB light source 42.

Specifically, a spacer groove 432 is provided on the side of the light source holder 43 that is separated from the lens 44, a light source groove 434 is provided at the bottom of the spacer groove 432, and the depth of the spacer groove 432 is 70, which is the thickness of the spacer 8. Since it is% to 80%, when the lens 44, the light source holder 43, the light source, the spacer 8, the first heat radiating member 31 and the second heat radiating member 32 are integrally connected by the second tightening member, 20% to 20% of the spacer 8. 30% is compressed and the entire structure can be made compact.

Further, an appropriate material for the first heat radiating member 31 and the pressing ring 6 can be selected according to the power when the downlight is used. When the power of the downlight is relatively large, it is preferable to use a metal material for the first heat dissipation member 31 and the pressing ring 6 in order to secure excellent heat dissipation performance. Specifically, aluminum die-cast products can be used, but the present invention is not limited to this. When the power of the downlight when used is relatively small, it is preferable to use a general plastic material for the first heat radiating member 31 and the pressing ring 6 in order to reduce the manufacturing cost. Since the downlight according to the present invention mainly dissipates heat through the second heat radiating member 32, the second heat radiating member 32 is made of a metal material in order to ensure excellent heat radiating performance. Specifically, extruded aluminum profiles can be used, but the present invention is not limited to this. According to the above design, the downlight according to the present invention has excellent heat dissipation performance, and the power when the downlight according to the present invention is used can reach 40 W or more. Further, it is possible to avoid the problem that the temperature of the COB light source 42 is less than 90 ° C. and heat cannot be dissipated quickly.

The above are merely selectable examples of the present invention and do not limit the present invention. Any changes, equal replacements, improvements, etc. made, as long as they do not deviate from the spirit and gist of the present invention, fall within the scope of the present invention.

1 Rotating table 11 Hollow chamber 12 Avoidance notch 13 Second limiting part 14 Circular concave groove 15 Engaging member 2 Height adjusting member 21 Adjusting hole 22 First limiting part 3 Light source assembly 31 First heat radiation member 311 Main body 3111 Chamber 3112 Through port 3113 3rd mounting hole 312 Protruding part 3121 Slide block 32 2nd heat radiation member 321 Central part 3211 Protruding base 322 Main trunk part 3221 4th mounting hole 323 Branch part 3231 Rib 4 Light source assembly 42 COB light source 43 Light source holder 431 Groove 432 Spacer groove 433 Second mounting hole 434 Light source groove 44 Lens 441 Condensing part 442 Mounting part 443 First mounting hole 45 Reflection cup 5 Band-shaped ring 51 Elastic piece 52 First position limiting protrusion 6 Pressing ring 61 Second position limiting protrusion 7 Decorative member 71 Avoidance protrusion 72 Engagement groove 8 Spacer

Claims (10)

Turntable and
A height adjusting member whose one end is rotatably connected to the turntable and which has an elongated adjusting hole.
It is provided at one end of the turntable and can reciprocate along the longitudinal direction of the adjustment hole together with a slide element inserted in the adjustment hole so as to adjust the relative height with the turntable. With a heat dissipation assembly
The light source assembly installed in the heat dissipation assembly and
A downlight characterized by having. The height adjusting member is rotatably connected to both sides opposite to the turntable, slide blocks as slide elements are provided on both sides opposite to the heat dissipation assembly, and the slide blocks correspond to each other. The downlight according to claim 1, wherein the downlight is fitted in the adjusting hole of the height adjusting member and can be reciprocated in the adjusting hole. The downlight according to claim 1, wherein the adjustment hole is a track hole extending in a direction extending from an end adjacent to the turntable to an end adjacent to the heat dissipation assembly. The heat dissipation assembly includes a first heat dissipation member connected to the height adjusting member and a second heat dissipation member connected to an end of the first heat dissipation member separated from the turntable, and the light source assembly includes the light source assembly. Installed on the first heat dissipation member,
The first heat radiating member includes a main body portion and protrusions provided on both opposite sides of the main body portion, respectively, and the protrusion portion together with the slide element inserted in the corresponding adjustment hole is said to be high. The downlight according to claim 1, wherein the downlight is fixed to the adjusting member. The downlight according to claim 4, further comprising a first tightening member for tightening and fixing the protruding portion to the height adjusting member. The turntable has a hollow chamber, and the rotation is such that an end of the main body portion separated from the second heat dissipation member is inserted into the hollow chamber and does not interfere with the rotation of the first heat dissipation member. A notch for avoidance was opened on the table,
4. The fourth aspect of the present invention is characterized in that the shape of the side of the second heat radiating member corresponding to the avoiding notch is adjusted to match the avoiding notch so as not to interfere with the rotation of the second heat radiating member. Described downlight. The range of the rotation angle of the height adjusting member with respect to the central axis of the turntable is -15 ° to 30 °, and the range of the rotation angle of the heat dissipation assembly with respect to the central axis of the turntable is 0 ° to 0 °. The downlight according to claim 4, wherein the temperature is 45 °. The downlight according to any one of claims 1 to 7, wherein the downlight is ringed outside the turntable and further has a band-shaped ring that is rotatable with respect to the turntable. An annular groove is provided on the outside of the turntable, and a plurality of elastic pieces engaging in the annular groove in the circumferential direction are provided on the inner wall of the strip ring, and the inner wall of the strip ring is provided with the said. The downlight according to claim 8, further comprising a first position limiting protrusion for preventing the band-shaped ring from coming off the turntable. A decorative member that is detachably inserted inside the turntable, and a pressing ring that is installed at an end of the heat dissipation assembly close to the turntable and has a tooth-like microstructure inside for anti-glare. The downlight according to any one of claims 1 to 7, further comprising.

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