CN209926099U

CN209926099U - Down lamp

Info

Publication number: CN209926099U
Application number: CN201920666569.XU
Authority: CN
Inventors: 官世富; 余远彬; 李婉珍; 杨俊松
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-10
Anticipated expiration: 2029-05-10

Abstract

The utility model relates to a fire prevention lighting technology field especially relates to a down lamp. The down lamp includes: light source subassembly, radiator unit and gasket. The light source component generates heat under the conducting state and comprises a light source plate and a plurality of lamp beads, the light source plate is provided with a light emitting surface and a heat dissipation surface opposite to the light emitting surface, and the lamp beads are arranged on the light emitting surface at intervals. The heat dissipation assembly is used for dissipating heat of the light source assembly and comprises a heat dissipation cylinder and a heat dissipation surface ring connected with the heat dissipation cylinder, the heat dissipation cylinder is provided with an arrangement cavity in an open cavity structure, and the light source plate is located in the arrangement cavity. The gasket is located between the light source board and the bottom of the cavity for placing the cavity, and transfers the heat of the light source component to the heat dissipation cylinder. The utility model discloses can improve the radiating efficiency of light source subassembly and simplify the assembly process of down lamp.

Description

Down lamp

Technical Field

The utility model relates to a fire prevention lighting technology field especially relates to a down lamp.

Background

Currently, the LED fire-proof down lamp is widely used in hotels, conference rooms, factory offices, business negotiation sites, houses, institutions, schools, hospitals, etc., buildings and sites that require energy saving and high color rendering index.

The inside heat dissipation of fire prevention down lamp is realized through directly assembling light source subassembly on the face ring radiating piece, and the heat can be followed the light source subassembly and transmitted to the face ring radiating piece like this, and the rethread face ring radiating piece distributes away the heat. The light source assembly is directly arranged on the surface ring heat dissipation part, and the surface contact of the light source assembly and the surface ring heat dissipation part is insufficient, so that the heat dissipation efficiency is influenced. Also have and coat heat conduction silica gel between light source subassembly and face ring radiating piece, but the homogeneity of heat conduction silica gel coating can't guarantee, and the coating heat conduction silica gel can lead to the assembling process of fire prevention down lamp complicated moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a down lamp aims at solving the problem of how to improve the radiating efficiency of down lamp and simplify its assembling process.

The utility model provides a down lamp, include:

the light source assembly comprises a light source plate and a plurality of lamp beads, the light source plate is provided with a light-emitting surface and a heat-radiating surface opposite to the light-emitting surface, and the lamp beads are arranged on the light-emitting surface at intervals and project light rays towards a preset direction;

the heat dissipation assembly is used for dissipating heat of the light source assembly and comprises a heat dissipation cylinder and a heat dissipation surface ring connected with the heat dissipation cylinder, the heat dissipation cylinder is provided with an arrangement cavity with an open cavity structure, the light source plate is located in the arrangement cavity, and the heat dissipation surface faces to the cavity bottom of the arrangement cavity; and

the gasket is located between the light source board and the bottom of the cavity of the placement cavity, the radiating surface abuts against one side surface of the gasket to transfer heat to the gasket, and the other side surface of the gasket is connected with the bottom of the cavity of the placement cavity to transfer the received heat to the radiating cylinder.

In one embodiment, an outer diameter of the spacer is larger than an outer diameter of the light source board, and the spacer covers a cavity bottom of the seating cavity.

In one embodiment, the spacer is a spacer made of a flexible, thermally conductive, and electrically insulating material.

In one embodiment, the light source assembly further includes a light distribution member, the light distribution member is disposed on the light emitting surface and includes a cup sleeve sleeved in the placement cavity and a cup body located in the cup sleeve and integrally formed with the cup sleeve, the cup body is used for collecting light generated by the lamp beads, and a sealing ring is disposed between the cup sleeve and the cavity wall of the placement cavity.

In one embodiment, the ring surface of the heat dissipation surface ring, which faces away from the projection direction of the light, is provided with a foam ring.

In one embodiment, the down lamp further comprises a driving seat connected with the heat dissipation cylinder, the driving seat is provided with a mounting surface for the heat dissipation cylinder to be arranged, and the cavity bottom of the mounting cavity is located between the gasket and the mounting surface; the down lamp is still including being used for connecting a heat dissipation section of thick bamboo with the coupling assembling of drive seat, coupling assembling includes a plurality of connecting bolt and a plurality of protruding locating the spliced pole that installation face and interval set up, each the spliced pole all seted up with the screw hole of connecting bolt adaptation, the gasket settle at the bottom of the chamber in chamber and light source board is gone up and is corresponded respectively the through-hole has all been seted up to the position of spliced pole, each corresponding each is worn to establish respectively by connecting bolt's one end through-hole and spiral shell lock in corresponding in the screw hole.

In one embodiment, the connecting assembly further includes at least two positioning columns protruding from the mounting surface and disposed in a staggered manner with respect to the connecting column, positioning holes are formed in the gasket, the bottom of the mounting cavity, and the light source plate at positions corresponding to the positioning columns, and the free ends of the positioning columns are respectively inserted into the positioning holes.

In one embodiment, the driving seat is provided with an accommodating cavity, a driving component for driving the light source component is arranged in the accommodating cavity, a wire passing pipe is arranged between the heat dissipation cylinder and the driving seat, and two ends of the wire passing pipe are respectively communicated with the accommodating cavity and the placement cavity.

In one embodiment, the accommodating cavity is of an open cavity structure, the opening direction of the accommodating cavity is opposite to the opening direction of the accommodating cavity, a driving cover is arranged at the opening of the accommodating cavity, the driving cover is integrally connected with a driving sleeve which is externally sleeved on the driving seat, a plurality of buckles are convexly arranged on the outer side surface of the driving seat, and clamping grooves for the buckles to be clamped are formed in the inner wall of the driving sleeve corresponding to the positions of the buckles.

In one embodiment, the driving cover is provided with a conductive hole communicated with the accommodating cavity, the down lamp further comprises a power line with one end penetrating through the conductive hole and electrically connected with the driving assembly, and a wire buckle which is positioned in the conductive hole and used for fixing the power line; the down lamp also comprises a power box connected with the other end of the power line.

The technical effects of the utility model are that: the light source assembly is arranged in the heat dissipation cylinder, and the light source assembly enables the lamp beads to project light rays towards the preset direction and the light source plate to generate heat simultaneously in the conductive state. The gasket made of heat-conducting and insulating material is arranged between the heat dissipation surface and the cavity bottom of the placement cavity, so that heat is transferred from the light source plate to the gasket and then transferred to the heat dissipation cylinder through the gasket. Because the gasket can guarantee the homogeneity of its heat conducting surface, it can fully effectively contact between with light source board and the heat dissipation section of thick bamboo respectively, the whole easy dismounting of gasket moreover to the radiating efficiency of light source subassembly has been improved and the assembling process of down lamp has been simplified.

Drawings

Fig. 1 is a three-dimensional structure diagram of a down lamp provided by the embodiment of the present invention;

FIG. 2 is an exploded view of the heating and heat dissipating components of the downlight of FIG. 1;

FIG. 3 is a perspective view of the gasket of FIG. 2;

FIG. 4 is an assembled block diagram of a light source assembly and a heat sink assembly of the downlight of FIG. 1;

FIG. 5 is a front view of the downlight of FIG. 1;

FIG. 6 is a cross-sectional view of the downlight of FIG. 5 along its central plane of symmetry;

FIG. 7 is a front elevational view of the downlight of FIG. 5 in another orientation;

FIG. 8 is a bottom view of the downlight of FIG. 7;

fig. 9 is a top view of the downlight of fig. 7.

The correspondence between reference numbers and names in the drawings is as follows:

100. a down lamp; 10. a light source assembly; 20. a heat dissipating component; 31. a drive sleeve; 61. a spring clip; 66. a connecting plate; 131. a cup sleeve; 132. a cup body; 13. a light reflecting cup; 12. a seal ring; 11. a light source plate; 41. a connecting bolt; 211. a placement cavity; 21. a heat-dissipating cylinder; 22. a heat dissipating surface ring; 14. a gasket; 33. a wiring pipe; 322. a mounting surface; 34. connecting columns; 35. a positioning column; 321. buckling; 32. a driving seat; 38. a drive assembly; 15. a cotton ring is soaked; 52. wire buckling; 51. a power line; 111. a light-emitting surface; 142. positioning holes; 141. a through hole; 37. a drive cap; 324. an accommodating cavity; 53. a power supply box;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "vertical", "parallel", "bottom", "angle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship.

Referring to fig. 1 to 3, a down lamp 100 according to an embodiment of the present invention is provided. The down lamp 100 is plugged with an external commercial power and is used for transmitting light in a preset direction.

Referring to fig. 2, 4 to 6, the downlight 100 includes: light source assembly 10, heat sink assembly 20, and gasket 14. The light source assembly 10 includes a light source plate 11 and a plurality of lamp beads and generates heat in a conductive state. Optionally, the lamp beads are LED lamp beads which have the characteristics of high lighting speed, high brightness, energy conservation, environmental friendliness and the like. Light source board 11 is used for installing the lamp pearl and supplies power to the lamp pearl, and each lamp pearl is in produced heat transfer to light source board 11 under the light condition. The light source board 11 has a light exit surface 111 and a heat dissipation surface opposite to the light exit surface 111, and each of the beads is disposed on the light exit surface 111 at an interval and projects light toward a predetermined direction. The heat dissipation assembly 20 is used for dissipating heat from the light source assembly 10 and fixing the light source assembly 10. The heat dissipating assembly 20 includes a heat dissipating cylinder 21 and a heat dissipating surface ring 22 connected to the heat dissipating cylinder 21, the heat dissipating cylinder 21 is provided with a mounting cavity 211 having an open cavity structure, and the open end of the heat dissipating cylinder 21 is sleeved on the inner ring of the heat dissipating surface ring 22. Alternatively, the heat radiating cylinder 21 is integrally formed with the heat radiating surface ring 22. The light source board 11 is located and settles the chamber 211 and the cooling surface is towards settling the chamber bottom of chamber 211, and the light that the lamp pearl sent is from settling the opening of chamber 211 and projecting towards predetermined direction. The spacer 14 is made of a heat conductive material and has an insulating property, and the spacer 14 is integrally formed so that the uniformity of the surface can be ensured. The gasket 14 is disposed between the light source board 11 and the bottom of the cavity in which the cavity 211 is disposed, the heat dissipation surface abuts against one side surface of the gasket 14 to transfer heat to the gasket 14, the other side surface of the gasket 14 may abut against the bottom of the cavity in which the cavity 211 is disposed to transfer the received heat to the heat dissipation barrel 21, and may also be disposed at an interval from the bottom of the cavity in which the cavity 211 is disposed to guide the heat out of the heat dissipation barrel through other connection structures.

With light source subassembly 10 setting in heat dissipation section of thick bamboo 21, light source subassembly 10 is under conducting state, and the lamp pearl is to predetermineeing the direction projection light and light source board 11 heat production simultaneously. The spacer 14 made of a heat conductive and insulating material is disposed between the heat radiating surface and the cavity bottom of the seating cavity 211, so that heat is transferred from the light source board 11 to the spacer 14 and then to the heat radiating cylinder 21 through the spacer 14. Because the gasket 14 can ensure the uniformity of the heat conducting surface thereof, the gasket is respectively in full effective contact with the light source plate 11 and the heat dissipation cylinder 21, and the gasket 14 is convenient to integrally disassemble and assemble, the heat dissipation efficiency of the light source assembly 10 is improved, and the assembly process of the down lamp 100 is simplified.

In one embodiment, the inner diameter of the spacer 14 is larger than the inner diameter of the light source board 11, and the spacer 14 covers the cavity bottom where the cavity 211 is disposed. The gasket 14 is flatly arranged at the bottom of the installation cavity 211 and is paved on the whole cavity bottom, so that the contact area between the gasket 14 and the heat dissipation cylinder 21 is increased, and the heat dissipation efficiency is further improved.

In one embodiment, spacer 14 is a spacer 14 made of a flexible thermally conductive material. Alternatively, the heat conductive material may be heat conductive silicone or heat conductive cotton, and the flexible gasket 14 may be in sufficient contact with the heat dissipation surface and the bottom of the cavity in which the cavity 211 is disposed, so that heat is rapidly transferred from the light source assembly 10 to the heat dissipation cylinder 21. Optionally, the spacer 14 made of a flexible material may also isolate the light source board 11 from the cavity bottom where the cavity 211 is disposed, and may also dampen vibration of the light source board 11.

In one embodiment, the thermal conductivity of the gasket 14 is in the range of 0.2 to 1.

Referring to fig. 6 to 9, in an embodiment, the light source assembly 10 further includes a cup-shaped reflective cup 13 and a sealing ring 12 located in the installation cavity 211, the reflective cup 13 is disposed on the light-emitting surface 111 and includes a cup sleeve 131 sleeved in the installation cavity 211 and a cup body 132 located in the cup sleeve 131 and integrally formed with the cup sleeve 131, and the cup body 132 is configured to converge light generated by each lamp bead and control projection of light beams so as to intensively irradiate the light; the comfort degree of the light beam can be adjusted, and the light emitting efficiency is improved. In other embodiments, the cup body 132 may also be a lens. Referring to fig. 2 and 6, the sealing ring 12 is sleeved on the cup sleeve 131 and used for sealing the cup sleeve 131 and the cavity wall of the mounting cavity 211, so as to prevent water and external foreign matters from contacting the light source plate 11, thereby achieving the function of front waterproof, improving the applicable place of the product, and improving the product competitiveness.

In one embodiment, the annulus of the cooling surface ring 22 facing away from the direction of the projected light is provided with a foam ring 15. The foam ring 15 generates smoke when burning, thereby indicating the fire information to the outside. Optionally, the heat sink assembly 20 is made of a flame retardant material so that further combustion by a flame can be prevented. The heat dissipating unit 20 further includes two connecting plates 66 connected to the side surfaces of the heat dissipating cylinder 21 and two spring clips 61 respectively connected to the two connecting plates 66.

Referring to fig. 2 and 3, in one embodiment, the downlight 100 further includes a driving seat 32 connected to the heat dissipating cylinder 21, and the driving seat 32 is cylindrical and has a mounting surface 322 for the heat dissipating cylinder 21 to be disposed thereon. The bottom of the mounting cavity 211 is located between the spacer 14 and the mounting surface 322. The down lamp 100 further includes a connecting assembly for connecting the heat dissipating cylinder 21 and the driving seat 32, wherein the connecting assembly includes a plurality of connecting bolts 41 and a plurality of connecting posts 34 protruding from the mounting surface 322 and spaced apart from each other. Optionally, three connecting columns 34 and three connecting bolts 41 are provided, and the three connecting columns 34 are circumferentially and symmetrically arranged on the mounting surface 322. Each connecting column 34 is provided with a threaded hole adapted to the connecting bolt 41, the gasket 14, the bottom of the mounting cavity 211 and the light source plate 11 corresponding to each connecting column 34 are provided with through holes 141, and one end of each connecting bolt 41 is respectively inserted into each corresponding through hole 141 and screwed into the corresponding threaded hole. The light source assembly 10 and the heat sink assembly 20 can be detachably fixed on the driving seat 32 by the engagement of the connection bolt 41 and the threaded hole.

In one embodiment, the connecting assembly further includes at least two positioning pillars 35 protruding from the mounting surface 322 and disposed in a staggered manner with respect to the connecting column 34, the gasket 14, the bottom of the mounting cavity 211, and the light source plate 11 have positioning holes 142 formed therein corresponding to the positioning pillars 35, and the free end of each positioning pillar 35 is inserted through each positioning hole 142. The cooperation of the positioning posts 35 and the positioning holes 142 can be used to assist the assembly of the light source assembly 10, the heat sink assembly 20 and the driving seat 32 during the assembly of the downlight 100.

Referring to fig. 5 to 9, in an embodiment, the driving seat 32 is provided with a receiving cavity 324, the tube lamp 100 further includes a driving assembly 38 disposed in the receiving cavity 324 and used for driving the light source assembly 10, the tube lamp 100 further includes a wire passing pipe 33 for passing a wire, the wire passing pipe 33 is located between the heat dissipating cylinder 21 and the driving seat 32, and two ends of the wire passing pipe 33 are respectively communicated with the receiving cavity 324 and the receiving cavity 211. The wire is used for connecting light source board 11 and drive assembly 38 to make drive assembly 38 control the illumination and the closing of lamp pearl.

In one embodiment, the receiving cavity 324 has an open cavity structure, the opening of the receiving cavity 324 faces away from the opening of the accommodating cavity 211, the downlight 100 further includes a driving cover 37 covering the opening of the receiving cavity 324 and a driving sleeve 31 integrally formed with the driving cover 37 and externally sleeved on the driving seat 32, a plurality of fasteners 321 are convexly disposed on the outer side surface of the driving seat 32, and a slot for the fasteners 321 to be fastened is disposed on the inner wall of the driving sleeve 31 corresponding to the position of each fastener 321. The driving sleeve 31 and the driving seat 32 can be detachably connected by the matching of the buckle 321 and the clamping groove, and the driving cover 37 covers the accommodating cavity 324.

In one embodiment, the driving cover 37 defines a conductive hole communicating with the receiving cavity 324, and the downlight 100 further includes a power cord 51 having an end penetrating the conductive hole and electrically connected to the driving assembly 38, and a cord fastener 52 located in the conductive hole and used for fixing the power cord 51. The other end of the power cord 51 is electrically connected to a power supply box 53. The drive assembly 38 may be powered by a power pack 53.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A downlight, comprising:

2. A downlight according to claim 1, wherein: the outer diameter of the gasket is larger than that of the light source plate, and the gasket covers the cavity bottom of the mounting cavity.

3. A downlight according to claim 1, wherein: the gasket is made of flexible heat-conducting insulating material.

4. A downlight according to any one of claims 1 to 3, wherein: the light source component further comprises a light distribution piece, the light distribution piece is arranged on the light emitting surface and is arranged in the cup sleeve in the placement cavity and a cup body which is arranged in the cup sleeve and is integrally formed with the cup sleeve, the cup body is used for gathering light rays generated by the lamp beads, and a sealing ring is arranged between the cup sleeve and the wall of the placement cavity.

5. A downlight according to any one of claims 1 to 3, wherein: the ring surface of the radiating surface ring, which deviates from the projection direction of the light, is provided with a foam ring.

6. A downlight according to any one of claims 1 to 3, wherein: the down lamp also comprises a driving seat connected with the heat dissipation cylinder, the driving seat is provided with an installation surface for the heat dissipation cylinder to be arranged, and the cavity bottom of the installation cavity is positioned between the gasket and the installation surface; the down lamp is still including being used for connecting a heat dissipation section of thick bamboo with the coupling assembling of drive seat, coupling assembling includes a plurality of connecting bolt and a plurality of protruding locating the spliced pole that installation face and interval set up, each the spliced pole all seted up with the screw hole of connecting bolt adaptation, the gasket settle at the bottom of the chamber in chamber and light source board is gone up and is corresponded respectively the through-hole has all been seted up to the position of spliced pole, each corresponding each is worn to establish respectively by connecting bolt's one end through-hole and spiral shell lock in corresponding in the screw hole.

7. A downlight according to claim 6, wherein: the connecting assembly further comprises positioning columns which are convexly arranged on the mounting surface and are arranged in a staggered mode with the connecting columns, at least two positioning columns are arranged, positioning holes are formed in the gasket, the cavity bottom of the mounting cavity and the positions, corresponding to the positioning columns, of the light source plate, and the free ends of the positioning columns penetrate through the positioning holes respectively.

8. A downlight according to claim 6, wherein: the holding chamber has been seted up to the drive seat, the holding intracavity is equipped with and is used for the drive assembly of light source subassembly, the heat dissipation section of thick bamboo with be equipped with between the drive seat and walk the spool, the both ends of walking the spool communicate respectively the holding chamber with settle the chamber.

9. A downlight according to claim 8, wherein: the holding chamber is the opening chamber structure, the opening orientation in holding chamber with the opening orientation in settling the chamber deviates from mutually, holding chamber opening part is equipped with the drive lid, drive lid an organic whole be connected with the overcoat in the drive cover of drive seat, the protruding a plurality of buckles that are equipped with of outside surface of drive seat, the confession has been seted up to the position that the inner wall of drive cover corresponds each buckle the draw-in groove of buckle joint.

10. A downlight according to claim 9, wherein: the driving cover is provided with a conductive hole communicated with the accommodating cavity, the down lamp further comprises a power line with one end penetrating through the conductive hole and electrically connected with the driving assembly, and a wire buckle which is positioned in the conductive hole and used for fixing the power line; the down lamp also comprises a power box connected with the other end of the power line.