TWI396808B - Led lamp - Google Patents

Description

Light-emitting diode lamp

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

As a highly efficient light source, the light-emitting diode has many characteristics such as environmental protection, high brightness, power saving, long life and the like, and has been widely used in various fields, such as lighting equipment such as wall lamps. However, the wall lamp using the light-emitting diode is often small in volume, and a large amount of heat is generated when the light-emitting diode works. If the heat is not released in time, the light-emitting diode is easily overheated, which leads to luminous efficiency. decline. Therefore, how to heat the LEDs of the LEDs is also a problem that the industry attaches great importance to.

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

A light-emitting diode lamp includes a heat sink, a light-emitting diode module attached to the heat sink, and a lamp cover mounted on the heat sink and covering the light-emitting diode module therein The heat sink includes a base, a heat-conducting tube extending vertically downward from a central portion of the bottom surface of the base, and a plurality of heat-dissipating fins formed at the bottom of the base and surrounding the heat-conducting tube. The heat-dissipating fins are from the heat-dissipating tube The outer wall is radially extended, and the light emitting diode module is placed at a position corresponding to the top surface of the base and the heat conducting tube.

The light-emitting diode lamp of the invention can dissipate the heat generated by the light-emitting diode by the action of the base and the heat-dissipating fin, and the heat sink has a simple structure and is easy to manufacture, and can effectively reduce the cost of the light-emitting diode lamp. .

As shown in FIG. 1 and FIG. 2 , a preferred embodiment of the light-emitting diode lamp of the present invention is a wall lamp mounted on a wall, which mainly includes a light-emitting diode module 10 for attaching and cooling The heat sink 20 of the LED module 10, a lamp cover 30 mounted on the heat sink 20 and covering the LED module 10, and the heat sink 20 and the lamp cover 30 are disposed therein Cover 40. The light-emitting diode lamp further includes a waterproof gasket 50 surrounding the bottom edge of the lamp cover 30, a pressure ring 60 for fixing the lamp cover 30 and the waterproof gasket 50 to the heat sink 20, and a power source mounted in the heat sink 20. Drive module 70.

The LED module 10 includes a circular circuit board 12 and a plurality of LEDs 14 mounted on one side of the circuit board 12. The other side of the circuit board 12 is attached to the heat sink 20.

As shown in FIG. 3 , the heat sink 20 includes a circular base 21 for attaching the LED module 10 and a plurality of heat dissipation fins 27 extending vertically downward from the bottom surface of the base 21 . A circular boss 23 extends upward in the middle of the top surface of the base 21. The boss 23 is the same as the axis of the susceptor 21, and has a diameter corresponding to the diameter of the circuit board 12 to affix the LED module 10. A through hole 230 is defined in the center of the base 21 for the electric wire of the light emitting diode module 10 to pass through the power driving module 70 connected to the bottom of the heat sink 20. The edge of the base 21 extends evenly vertically upwards to the three mounting posts 25. A heat conducting tube 24 coaxially with the base 21 extends vertically in the middle of the bottom of the base 21, and the position of the heat conducting tube 24 corresponds to the base 21 on which the light emitting diode is disposed. The heat dissipating fins 27 surround the heat conducting tube 24 while being perpendicular to the bottom surface of the base 21, and extend radially from the outer wall of the heat conducting tube 24 and are placed on the base 21 without exceeding the edge of the base 21. Inside the edge. The heat dissipation fins 27 are spaced apart from each other to form a heat dissipation channel 270. A notch is formed in the middle of each of the heat dissipation fins 27 such that the notches of the heat dissipation fins 27 together form a circular groove 275. The trench 275 is perpendicular to the heat dissipation channel 270 to increase the direction of airflow. The two connecting posts 29 extend perpendicularly from the base 21 and are located on the grooves 275. The connecting posts 29 are provided with mounting holes 290 therethrough for securing the entire heat sink 20 to the wall by a plurality of fasteners (not shown).

The power drive module 70 is received in the heat transfer tube 24 . A rear cover 242 is mounted to the bottom of the heat conducting tube 24 to enclose the power drive module 70 in the heat conducting tube 24. A central hole 240 is defined in the middle of the rear cover 242. A retaining sleeve 246 is disposed in the central hole 240 of the rear cover 242 to prevent the electric wire drawn from the power driving module 70 from being scratched by the rear cover 242.

The globe 30 is made of a transparent or translucent material such as glass or the like so that light emitted from the LEDs 14 passes through the globe 30. The lamp cover 30 has an inverted bowl shape, and an annular flange 33 is extended at the bottom thereof. The outer diameter of the flange 33 is smaller than the top surface of the base 21, and the lamp cover 30 is mounted on the base 21 and then flanged. 33 is placed inside the fixed column 25. The lamp cover 30 is used to protect the LED module 10 disposed therein to prevent dust from entering the LED module 10 and affecting the operation of the LEDs 14.

The waterproof gasket 50 is sleeved on the flange 33 at the bottom of the lampshade 30 to enhance the sealing of the light-emitting diode lamp to achieve waterproof and dustproof. The waterproof gasket 50 is composed of a material having elasticity such as rubber and is provided in a ring shape. The inner wall of the waterproof gasket 50 is provided with a ring groove 55 which is sized to match the size of the flange 33 of the lamp cover 30 such that the waterproof gasket 50 encloses the entire flange 33 therein. The pressure ring 60 includes an annular abutting portion 61 and an outward abutting portion 61 The three positioning portions 62 are extended. The size of the abutting portion 61 corresponds to the size of the waterproof gasket 50; the positioning portion 62 corresponds to the fixing post 25 of the heat sink 20.

The front cover 40 includes an annular body 42 and side walls 41 extending downward from the body 42. The body 42 extends the three connecting posts 420 uniformly downward to correspond to the mounting posts 25 of the heat sink 20 . A plurality of reinforcing ribs 425 are disposed on both sides of the connecting post 420 to connect the body 42 and the frame 41 and increase the strength of the fixed connecting post 420. The body 42 extends inwardly with a semi-circular light-shielding plate 43 such that a semi-circular light-transmissive hole 44 corresponding to the light-shielding plate 43 is formed at the top of the body 42. The body 42 and the light shielding plate 43 are slightly convex upward to correspond to the lamp cover 30.

Referring to FIG. 4 together, when the LED package is assembled, the LED module 10 is first fixed on the base 21 of the heat sink 20, and the power drive module 70 is fixed to the heat transfer of the heat sink 20. The sleeve 24 is closed by the rear cover 242; then, the waterproof gasket 50 is sleeved on the flange 33 of the lamp cover 30 and placed on the base 21 to press the pressure ring 60 over the waterproof gasket 50; The front cover 40 is covered with the base 21 of the heat sink 20, the light-emitting diode module 10, and the lamp cover 30. The screw 80 passes through the connecting post 420 of the front cover 40 and the positioning portion 62 of the pressure ring 60 to be screwed together for heat dissipation. The mounting of the device 20 is in the column 25. Wherein, the side wall 41 of the front cover 40 surrounds the base 21 to enclose the upper portion of the heat dissipation fin 27 . At this point, the entire light-emitting diode lamp is installed.

When the illuminating diode lamp is in operation, the light emitted by the illuminating diode 14 is radiated through the lamp cover 30 and the light transmission hole 44 of the front cover 40. Due to the function of the visor 43 of the front cover 40, the light emitted by the illuminating diode lamp can be directed to one side according to actual needs. For example, when the illuminating diode lamp is installed at a higher position of the wall, the visor 43 is located on the upper side. The light is facing downwards; when the light-emitting diode lamp is installed at a lower part of the wall, the light shielding plate 43 is located below The side illuminates the light upwards, reducing direct exposure to the human eye. When the light-emitting diode lamp is mounted on the ceiling and irradiated downward, the light shielding plate 43 can be removed to function as a full illumination. The heat sink 20 can dissipate heat from the LED module 10 to ensure that the LED module 10 is in a normal operating temperature range, and the heat sink 20 has a simple structure and is easy to manufacture, and can effectively reduce the LED lamp. The cost. In addition, the side wall 41 of the front cover 40 partially encloses the heat dissipation fins 27 of the heat sink 20 disposed at the bottom of the light emitting diode lamp, and the heat dissipation fins 27 are well protected without affecting the heat dissipation performance of the heat sink 20. .

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‧‧‧Lighting diode module

12‧‧‧ boards

14‧‧‧Lighting diode

20‧‧‧ radiator

21‧‧‧Base

23‧‧‧Boss

230‧‧‧through hole

24‧‧‧thermal tube

240‧‧‧ center hole

242‧‧‧Back cover

246‧‧‧ Guarding sleeve

25‧‧‧Fixed column

27‧‧‧ Heat sink fins

270‧‧‧heating channel

275‧‧‧ trench

29‧‧‧Connecting column

290‧‧‧ mounting holes

30‧‧‧shade

33‧‧‧Flange

40‧‧‧ front cover

41‧‧‧ side wall

42‧‧‧Ontology

420‧‧‧Connecting column

425‧‧‧Strengthened ribs

43‧‧ ‧ visor

44‧‧‧Light hole

50‧‧‧Waterproof gasket

55‧‧‧ Ring groove

60‧‧‧pressure ring

61‧‧‧Abutment

62‧‧‧ Positioning Department

70‧‧‧Power Driver Module

80‧‧‧ screws

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

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

3 is an inverted view of the light-emitting diode lamp of FIG. 2.

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

10‧‧‧Lighting diode module

12‧‧‧ boards

14‧‧‧Lighting diode

20‧‧‧ radiator

21‧‧‧Base

23‧‧‧Boss

230‧‧‧through hole

240‧‧‧ center hole

242‧‧‧Back cover

246‧‧‧ Guarding sleeve

25‧‧‧Fixed column

27‧‧‧ Heat sink fins

30‧‧‧shade

33‧‧‧Flange

40‧‧‧ front cover

41‧‧‧ side wall

42‧‧‧Ontology

420‧‧‧Connecting column

43‧‧ ‧ visor

44‧‧‧Light hole

50‧‧‧Waterproof gasket

55‧‧‧ Ring groove

60‧‧‧pressure ring

61‧‧‧Abutment

62‧‧‧ Positioning Department

70‧‧‧Power Driver Module

80‧‧‧ screws

Claims (7)

A light-emitting diode lamp includes a heat sink, a light-emitting diode module attached to the heat sink, and a lamp cover mounted on the heat sink and covering the light-emitting diode module therein. The improvement is that the heat sink comprises a base, a heat-conducting tube extending vertically downward from a central portion of the bottom surface of the base, and a plurality of heat-dissipating fins formed at the bottom of the base and surrounding the heat-conducting tube, the heat-dissipating fins The outer wall of the heat-conducting tube is radially extended, and the light-emitting diode module is placed on a top surface of the base corresponding to the heat-conducting tube, wherein the bottom of the lamp cover is provided with a flange, and the flange is received in a waterproof gasket, The light-emitting diode lamp further includes a pressure ring having an abutting portion abutting against the waterproof gasket and a positioning portion extending from the abutting portion, the positioning portion being fixed on the base of the heat sink. The illuminating diode lamp of claim 1, wherein the pedestal has a circular shape, and a heat dissipation channel is formed between each of the heat dissipation fins, and a gap is formed in a middle portion of each of the heat dissipation fins, and the heat dissipation fins are provided. The notches together form a circular groove that vertically communicates with the heat dissipation channel. The illuminating diode lamp of claim 1, further comprising a front cover fixed to the heat sink and having the lamp cover disposed therein, the front cover comprising an annular body and downward from the body An extended side wall and a visor extending inwardly from the body. The illuminating diode lamp of claim 3, wherein the visor is semicircularly disposed to block a portion of the light emitted by the illuminating diode. The illuminating diode lamp of claim 4, wherein the sidewall extends beyond the pedestal of the heat sink to enclose the upper portion of the heat sink fin. The illuminating diode lamp of claim 1, further comprising a power driving module housed in the heat conducting tube, and a cover mounted on the bottom of the heat conducting tube to enclose the power driving module in the heat conducting tube . The illuminating diode lamp of claim 6, wherein a central hole is defined in the middle of the rear cover, and a retaining wire sleeve is locked in the central hole to protect the electric wire drawn from the power driving module.