TWI421437B - Led lamp - Google Patents

Description

Light-emitting diode lamp

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

LED (Light Emitting Diode) is a light-emitting diode, which is a semiconductor solid-state light-emitting device. It uses a semiconductor wafer as a light-emitting device, in which a carrier combines excess energy to cause photon emission, and directly emits red, yellow, blue, green, cyan, orange, purple, and white light.

LED lighting products are lighting fixtures that are manufactured using LEDs as light sources. Low-power LEDs have been widely used in indicator lights and display screens. Because of their low power, traditional LEDs do not have much heat dissipation. However, high-brightness, high-power LEDs, which are widely used in the fields of communication, lighting, transportation, outdoor billboards, etc., will have obvious luminous efficiency due to the increase of temperature, and even cause damage to components. Therefore, how to dissipate the high heat generated by the LED components has become an important issue that needs to be solved first in the application of LEDs to illumination.

In view of this, it is necessary to provide a light emitting diode module having better heat dissipation performance.

A light-emitting diode lamp comprising a heat sink and a surface attached to the heat sink The light-emitting diode module includes a base, the base includes a heat-absorbing portion that is bent downward, and a mounting portion that extends horizontally from a side end of the heat-absorbing portion, and the bottom surface of the curved heat-absorbing portion is arched. a plurality of heat-dissipating fins are attached to the top surface, and the plurality of light-emitting diode modules are placed on the bottom surface of the heat-absorbing portion, and a side cross section of the heat-absorbing portion of the base is substantially curved downward, and the top of the mounting portion The surface is close to the top surface of the heat sink fin.

The heat absorbing portion of the pedestal of the heat sink of the present invention absorbs the heat generated by the illuminating diode module, and dissipates heat through the heat dissipating fins on the top of the heat absorbing portion, thereby facilitating the heat dissipation performance of the illuminating diode lamp.

10‧‧‧ radiator

11‧‧‧Base

12‧‧‧Heat Absorption Department

13‧‧‧Installation Department

15‧‧‧ Heat sink fins

20‧‧‧Lighting diode module

21‧‧‧Aluminum substrate

22‧‧‧Lighting diode

30‧‧‧Drive Circuit Module

40‧‧‧ side cover

41‧‧‧ upper edge

42‧‧‧ lower edge

43‧‧‧ Groove

50‧‧‧Mirror

60‧‧‧Connectors

61‧‧‧Intermediate

62‧‧‧ horizontal department

63‧‧‧ Connecting rod

64‧‧‧ embedded department

70‧‧‧ panel

71‧‧‧Transmission Department

72‧‧‧ front wall

73‧‧‧Back wall

74‧‧‧ Groove

75‧‧‧Lighting mirror

90‧‧‧ screws

130‧‧‧ screw holes

150‧‧‧ ventilation duct

620‧‧‧through hole

710‧‧‧ openings

720‧‧‧ threading hole

1 is a perspective view of a light-emitting diode lamp of the present invention.

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

3 is an exploded view of the reversed-view component of the light-emitting diode lamp of FIG. 2.

FIG. 4 is a partial assembly diagram of the LED of FIG. 3 .

As shown in FIG. 1-2, the light-emitting diode lamp of the present invention mainly includes a heat sink 10, a plurality of light-emitting diode modules 20 attached to the lower surface of the heat sink 10, and a driving circuit module 30 and a cover. The mirror 50 on the LED module 30, the panel 70 mounted on the bottom of the heat sink 10, the two side covers 40 disposed on opposite sides of the heat sink 10 and the panel 70, and the joint 60 connecting the front ends of the heat sink 10 .

The heat sink 10 includes a base 11 having an arc shape in cross section and a plurality of heat dissipation fins 15 extending upward from the upper surface of the base 11. The susceptor 11 has a substantially spade shape and includes a heat absorbing portion 12 recessed downward and a mounting portion 13 disposed at the front end of the heat absorbing portion 12. Side of the heat absorbing portion 12 The cross section is generally curved and convex, and the middle of the bottom surface is substantially flat. The heat dissipation fins 15 extend upward from the heat absorbing portion 12, and the heat dissipation fins 15 are disposed in parallel with each other to form a lateral air passage 150. The top ends of the heat dissipation fins 15 are coplanar. The mounting portion 13 is provided in a flat shape and is connected to the front end of the heat absorbing portion 12. The bottom surface of the mounting portion 13 is spaced apart from the bottom surface of the heat absorbing portion 12 by a certain height to surround the front end of the heat absorbing portion 12 to form a receiving space for mounting the driving circuit module 30. At the same time, the top surface of the mounting portion 13 is close to the top surface of the heat dissipation fins 15. The mounting portion 13 is provided with a plurality of screw holes 130.

Referring to FIG. 3 , each of the LED modules 20 includes an aluminum substrate 21 and a plurality of light-emitting diodes 22 uniformly spaced apart on the aluminum substrate 21 . The LEDs 22 of the plurality of LED modules 20 form a rectangular matrix having a plurality of columns and a plurality of rows on the bottom surface of the susceptor 11. The light-emitting diode modules 20 are attached to the bottom surface of the base 11 of the heat sink 10 and arranged in a line parallel to the heat dissipation fins 15 for better heat dissipation. A mirror 50 is disposed on the LED module 20 to reflect the light emitted by the LEDs 22.

The panel 70 is made of a metal material. The panel 70 is generally U-shaped with its bottom corresponding to the base 11 of the heat sink 10. The panel 70 includes a light transmitting portion 71 and a front wall 72 and a rear wall 73 extending vertically from opposite sides of the light transmitting portion 71. The light transmitting portion 71 is provided with a square opening 710 to pass through the light emitted by the LED module 20 and emitted therefrom. A light-transmitting mirror 75 is closely attached to the transparent portion 71 to cover the square opening 710 to prevent dust, debris and the like from entering the light-emitting diode lamp. The tops of the front wall 72 and the rear wall 73 are in close contact with the front rear edge of the heat sink 10. A lateral groove 74 is disposed outside the joint between the front wall 72 and the light transmitting portion 71 to fit the joint 60. A threading hole 720 is also provided in the middle of the front wall 72.

The joint 60 is integrally die-cast from a metal material. The joint 60 includes a vertical intermediate portion 61, a horizontal portion 62 extending perpendicularly from the top of the intermediate portion 61, and a connecting rod 63 extending perpendicularly from the front side of the intermediate portion 61. The horizontal portion 62 is provided with a plurality of through holes 620 to correspond to the screw holes 130 of the mounting portion 13 on the heat sink 10. The lower edge of the intermediate portion 61 extends an insert portion 64 to be correspondingly mounted in the recess 74 of the panel 70. The connecting rod 63 is circularly shaped to be fixedly connected to the lamp post (not shown).

Each of the side covers 40 described above is provided in a flat shape. The shape of the upper edge 41 of each side cover 40 corresponds to the shape of the base 11, and the lower edge 42 corresponds to the shape of the panel 70. The inner side surface of each side cover 40 is provided with a groove 43 similar in contour to the side cover 40 for receiving a waterproof sealing gasket 45 to enhance the sealing of the light-emitting diode lamp. Each side cover 40 is provided with a plurality of through holes (not shown) on the outer side of the recess 43 for screwing (not shown) through the side of the base 11, the panel 10 and the joint 60 of the heat sink 10. .

Referring to FIG. 4, the LED module 20 and the mirror 50 are fixed on the bottom surface of the heat absorbing portion 12 of the base 11 of the heat sink 10 to fix the driving circuit module 30 to the base of the heat sink 10. 11 is mounted on the bottom surface of the mounting portion 13; the lens-mounted panel 70 is placed over the bottom of the heat sink 10, and the fitting portion 64 of the joint 60 is snapped into the recess 74 of the panel 70, the horizontal portion 62 of the joint 60 and the heat sink The mounting portion 13 of the device 10 is fixedly connected by a plurality of screws 90. Finally, the heat sink 10, the panel 70, and the joint 60 are fixedly connected by the side cover 40. The pedestal 11 , the panel 70 , the connector 60 and the two side covers 40 of the heat sink 10 together form a closed space for accommodating the LED module 20 and the electrical connection with the LED module. Circuit module 30.

When the LED module 20 emits light under the driving of the driving circuit module 30, the heat generated by the LED module 20 is first transmitted directly through the heat absorbing portion 12 of the susceptor 11. The fins 15 are delivered to the top to dissipate heat to the surrounding environment. At the same time, since the heat sink 10 is directly fixedly connected to the joint 60 by the mounting portion 13 of the base 11, the whole lamp structure is compact and simple, and the assembly is convenient and quick; in addition, the base 11 of the heat sink 10 is arc-shaped and has a flat shape. The mounting portion 13 forms a receiving space for locating the driving circuit module 30, so that the structure of the lamp is more reasonable.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10‧‧‧ radiator

11‧‧‧Base

12‧‧‧Heat Absorption Department

13‧‧‧Installation Department

15‧‧‧ Heat sink fins

20‧‧‧Lighting diode module

30‧‧‧Drive Circuit Module

40‧‧‧ side cover

41‧‧‧ upper edge

42‧‧‧ lower edge

43‧‧‧ Groove

50‧‧‧Mirror

60‧‧‧Connectors

61‧‧‧Intermediate

62‧‧‧ horizontal department

63‧‧‧ Connecting rod

64‧‧‧ embedded department

70‧‧‧ panel

71‧‧‧Transmission Department

72‧‧‧ front wall

73‧‧‧Back wall

75‧‧‧Lighting mirror

90‧‧‧ screws

130‧‧‧ screw holes

150‧‧‧ ventilation duct

620‧‧‧through hole

710‧‧‧ openings

Claims (10)

A light-emitting diode lamp includes a heat sink and a plurality of light-emitting diode modules attached to a bottom surface of the heat sink, wherein the heat sink comprises a base, and the base includes a heat absorption of a downward arc And a mounting portion extending horizontally from a side of the heat absorbing portion, the bottom surface of the curved heat absorbing portion is arched, and a plurality of heat radiating fins are extended upwardly from the top surface, and the light emitting diode module is placed on a bottom surface of the heat absorbing portion, The side cross section of the heat absorbing portion of the pedestal is substantially curved downwardly convex, and the top surface of the mounting portion is close to the top surface of the heat dissipating fin. The illuminating diode lamp of the first aspect of the invention, wherein the bottom surface of the mounting portion and the heat absorbing portion form a receiving space for mounting a driving circuit module electrically connected to the light emitting diode module. The light-emitting diode lamp of claim 1, wherein the top surface of the mounting portion is connected to a joint to mount the light-emitting diode lamp on a light pole. The illuminating diode lamp of claim 3, wherein the joint comprises an intermediate portion, a horizontal portion extending from the top of the intermediate portion, and a connecting rod extending from the intermediate portion toward a side of the heat sink. A connecting rod connects the pole. The illuminating diode lamp of claim 3, further comprising a panel disposed on a bottom surface of the heat sink and two side covers disposed on two sides of the heat sink and the panel, the base of the heat sink, The panel, the connector and the two side covers together form a closed space for accommodating the LED module. The illuminating diode lamp according to claim 5, wherein the panel has a U shape, and the bottom has a length and a width corresponding to the heat sink base. The illuminating diode lamp of claim 6, wherein the panel is provided A square opening corresponds to the light emitting diode module, and a light transmitting mirror covers the square opening, and the light emitted by the light emitting diode is emitted through the opening. The light-emitting diode lamp of claim 5, wherein each of the side covers is fixedly connected to the substrate, the panel and the joint of the heat sink by screws, and each side cover is provided with a groove to receive a waterproof Sealing gasket. The light-emitting diode lamp of claim 1, wherein the heat-dissipating fins are disposed in parallel with each other, and the light-emitting diode module is attached to the bottom surface of the heat sink and along the heat-dissipating fins The parallel aspects are arranged in a line. The light-emitting diode lamp of claim 1, wherein the heat sink is an aluminum extruded heat sink.