TWI416031B - Led lamp - Google Patents

Abstract

An LED lamp includes a plurality of stacked single lamps. Each of the lamps includes a heat sink and an LED module which is attached to the heat sink. The lamps are spaced from each other. Size of the lamps gradually decrease from top to bottom.

Description

Light-emitting diode lamp

The invention relates to a lighting device, in particular to a light emitting diode lamp.

As a new generation of light source, the light-emitting diode light source can not replace the traditional incandescent lamp on a large scale. However, it has the advantages of long working life, energy saving and environmental protection, and is generally favored by the market. Moreover, the module composed of the light-emitting diode can generate a high-power, high-brightness light source, so that it will widely and revolutionarily replace the conventional light source such as a conventional incandescent lamp, and thus become the main light source in line with the theme of energy conservation and environmental protection. .

As the power and brightness of the LED or its module increase, the heat generated is also increased. If the heating problem of the LED is not properly solved, the working life of the LED lamp will be Seriously affected. Therefore, a heat sink that is in contact with the LED module is usually disposed in the lamp to dissipate heat from the LED module. However, the light-emitting diode module of the lamp is generally placed horizontally on one side of the heat sink to form a planar light source. Such a planar light source not only generates relatively concentrated heat, but also has a single illumination direction and a limited illumination area, and cannot be Uniform and soft lighting is formed around the luminaire, which in many cases is difficult to satisfy the user.

A light-emitting diode lamp comprising a plurality of lamp bodies stacked one above another, each lamp body comprising A heat sink and a light emitting diode module attached to the bottom surface of the heat sink, the light bodies are spaced apart from each other and the size of the light body is sequentially reduced.

Compared with the prior art, the plurality of lamp bodies of the light-emitting diode lamp of the present invention are stacked one on another. Since the sizes of the lamp bodies are gradually smaller and the lamp bodies are spaced apart from each other, the lamp body in the upper layer has a large irradiation range. Moreover, it can avoid the shielding of the lamp body in the lower layer, so that a wide and uniform illumination area is formed around the entire LED body lamp, thereby improving the illumination efficiency of the LED lamp. Moreover, each of the light-emitting diode modules is respectively connected with a separate heat sink, and each of the heat sinks can directly radiate heat generated by the corresponding light-emitting diode module to improve heat dissipation of the light-emitting diode lamp. effectiveness.

10‧‧‧First lamp body

12‧‧‧ radiator

120‧‧‧ accommodating slots

122‧‧‧Heat fins

14‧‧‧Lighting diode module

140‧‧‧ boards

142‧‧‧Lighting diode components

16‧‧‧shade

160‧‧‧bond hole

18‧‧‧ cover

20‧‧‧second lamp body

30‧‧‧ Third lamp body

40‧‧‧ Mounting

50‧‧‧Support rod

100‧‧‧First connection

200‧‧‧Second connection

300‧‧‧ Third Connection

1 is a perspective assembled view of a light-emitting diode lamp according to an embodiment of the present invention.

2 is an exploded perspective view of the light-emitting diode lamp of FIG. 1.

3 is an inverted perspective exploded view of the light-emitting diode lamp of FIG. 1.

4 is a cross-sectional view of the light-emitting diode lamp of FIG. 1 taken along line IV-IV.

Referring to FIG. 1 and FIG. 2 , the LED lamp of the embodiment of the present invention has an inverted cone shape as a whole, and the LED lamp comprises a plurality of stacked LEDs and the size is reduced from top to bottom. A first lamp body 10, a second lamp body 20 and a third lamp body 30 further include a mounting seat 40 for mounting and fixing the LED body lamp, the first lamp body 10 and the second lamp body 20 Between the second lamp body 20 and the third lamp body 30, the third lamp body 30 and the mounting seat 40 are respectively connected by a support rod 50. The light emitted by the light-emitting diode lamp of the present invention is irradiated from top to bottom, and thus has an inverted cone shape. Can reason It is understood that the light-emitting diode lamp is not limited to being in the shape of an inverted cone, and in some other embodiments, such as when the light is irradiated from the bottom to the top, it may also be tapered in a three-dimensional shape.

As shown in FIG. 3 , the first lamp body 10 includes a heat sink 12 , and a light emitting diode module 14 attached to the bottom surface of the heat sink 12 and fixed to the bottom surface of the heat sink 12 . A light cover 16 of the light emitting diode module 14. In the present embodiment, the heat sink 12 has a disk shape and is integrally formed of a metal material such as aluminum or copper having good thermal conductivity. In some other embodiments, the heat sink 12 can also have other suitable shapes such as a rectangular disk shape or an elliptical disk shape. The bottom surface of the heat sink 12 is recessed downwardly from the periphery to form an annular receiving groove 120 for receiving the LED module 14 . The central portion of the bottom surface of the heat sink 12 protrudes vertically downward from a cylindrical first connecting portion 100 for chucking the top end of the support rod 50. A circular cover plate 18 is disposed on the top surface of the top surface of the heat sink 12. A plurality of fins 122 extend vertically upward from a periphery of the top surface of the heat sink 12, and the fins 122 are radially disposed around the cover plate 18. The LED module 14 is annular and correspondingly received in the first receiving slot 120. The LED module 14 includes an annular circuit board 140 and a plurality of LED components 142 mounted on the circuit board 140. The light emitting diode elements 142 are evenly arranged along the circumferential direction of the circuit board 140. The lamp cover 16 has an annular shape and is integrally formed of a transparent or translucent material such as glass, resin or the like. A plurality of coupling holes 160 are evenly spaced apart on the inner and outer circumferences of the lamp cover 16 for the screws (not shown) to pass through and screw with the heat sink 12 to fix the lamp cover 16 to the heat sink 12. Therefore, the LED module 14 is sealed in the accommodating groove 120.

The structure of the second lamp body 20 and the third lamp body 30 is opposite to the structure of the first lamp body 10 Should be consistent. The first, second, and third lamp bodies 10, 20, 30 are parallel and coaxially arranged from top to bottom. The outer diameter of the heat sink 12 of the second lamp body 20 is smaller than the inner diameter of the light emitting diode module 14 of the first lamp body 10. Similarly, the outer diameter of the heat sink 12 of the third lamp body 30 is smaller than the inner diameter of the light emitting diode module 14 of the second lamp body 20. Thus, the first, second, and third lamp bodies 10, 20, 30 of the LED lamp are sequentially reduced in size from top to bottom, and the three-lamp body LED module 14 is at a horizontal plane. The projections on the top together form a loop-by-turn arrangement. In addition, a central portion of the top surface of the cover plate 18 of the second lamp body 20 protrudes vertically upward from a cylindrical second connecting portion 200, and the second connecting portion 200 is coupled to the first connecting portion 100 at the bottom of the first lamp body 10. The upper and lower sides are opposite to each other for clamping the bottom end of the support rod 50 between the first and second lamp bodies 10 and 20. Similarly, the center of the top surface of the cover plate 18 of the third lamp body 30 vertically protrudes upwardly from a cylindrical second connecting portion 200, and the second connecting portion 200 is opposite to the first connecting portion 100 at the bottom of the second lamp body 20. The upper and lower sides are opposite to each other for clamping the bottom end of the support rod 50 between the second and third lamp bodies 20 and 30.

The mounting base 40 is substantially a top closed cylindrical structure, and the light-emitting diode lamp can be directly mounted to a predetermined position by directly arranging an external light pole (not shown). A cylindrical third connecting portion 300 is protruded upwardly from the top center of the mounting base 40. The third connecting portion 300 is vertically opposite to the first connecting portion 100 at the bottom of the third lamp body 30. The bottom end of the support rod 50 between the third lamp body 30 and the mounting seat 40.

The support rod 50 is a hollow cylinder for supporting and connecting the first, second and third lamp bodies 10, 20, 30 and the mounting seat 40, respectively. The support rods 50 are respectively fixedly coupled to the first, second, and third connecting portions 100, 200, and 300, and may be provided with screws (not shown) to enhance the assembly rigidity.

Referring to FIG. 4 together, the three lamp bodies of the LED lamp of the present invention are stacked one on another. Since the outer diameter of the heat sink 12 of the three lamp bodies is gradually reduced from the top to the bottom, the light-emitting diode lamp overall has an inverted cone-shaped three-dimensional shape, and the lamp body in the upper layer has a large irradiation range and can avoid the lower layer. The light body is shielded, so that a wide and uniform illumination area is formed around the entire light-emitting diode lamp, thereby improving the illumination efficiency of the light-emitting diode lamp. Moreover, each of the LED modules 14 is connected to an independent heat sink 12, and each of the heat sinks 12 can directly dissipate the heat generated by the corresponding LED module 14 to improve the light emitting diode. The heat dissipation efficiency of the body lamp.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧First lamp body

12‧‧‧ radiator

14‧‧‧Lighting diode module

16‧‧‧shade

18‧‧‧ cover

20‧‧‧second lamp body

30‧‧‧ Third lamp body

40‧‧‧ Mounting

50‧‧‧Support rod

200‧‧‧Second connection

300‧‧‧ Third Connection

Claims (7)

A light-emitting diode lamp is improved in that it comprises a plurality of lamp bodies stacked one on top of the other, each lamp body comprises a heat sink and a light-emitting diode module attached to the bottom surface of the heat sink, the lamp bodies are mutually The light-emitting diode module includes a ring-shaped circuit board and a plurality of light-emitting diode elements spaced apart from the circuit board, and the circuit board is placed on the corresponding heat sink. The bottom surface of the heat sink is recessed downward to form an annular receiving groove for receiving the LED module, and each of the lamp bodies further includes an annular lamp cover attached to the lamp The light emitting diode module is sealed in the receiving groove on the bottom surface of the heat sink of the body. The illuminating diode lamp according to claim 1, wherein the lamp bodies are arranged in parallel and coaxially, and are gradually reduced in size from top to bottom, so that the illuminating diode lamp has an inverted cone shape. shape. The illuminating diode lamp of claim 1 or 2, wherein the heat sink has a disc shape. The light-emitting diode lamp of claim 1, wherein the size of the lamp body located in the lower layer is smaller than the size of the light-emitting diode module of the lamp body in the upper layer. The illuminating diode lamp according to claim 1 or 2, further comprising a plurality of columnar support rods, each of which is disposed between the adjacent two lamp bodies for supporting and connecting The adjacent two lamp bodies. The illuminating diode lamp of claim 5, wherein a bottom surface of the heat sink of each of the lamp bodies protrudes downwardly from a cylindrical first connecting portion for accommodating the support rod The top. The illuminating diode lamp of claim 6, wherein in the adjacent two lamp bodies, the top surface of the heat sink of the lower layer protrudes upwardly from the cylindrical second connecting portion, the second The connecting portion is opposite to the first connecting portion at the bottom of the upper lamp body for engaging the bottom end of the supporting rod between the two adjacent lamp bodies.