TWM508010U - Light emitting diode bulb - Google Patents

Description

Light-emitting diode bulb

The present invention relates to a light bulb, especially a light-emitting diode bulb.

Natural light comes from the sun, and in order to eliminate the inconvenience and fear of darkness, humans have developed artificial lighting, from the torch to Edison's incandescent bulbs, and further derived from fluorescent tubes, light-emitting diodes and other lighting technologies. Although the most commonly used lighting is fluorescent light, the light-emitting diode has been gradually applied to daily life because of its advantages of energy saving, environmental protection, small size, long life, fast response, and good shock resistance. Indicator lights, general lighting, commercial lighting to backlights, automotive lighting, etc., can be seen in the application of light-emitting diodes, so the light-emitting diode can be said to be the most promising lighting source in the future.

However, since the light-emitting efficiency of the light-emitting diode is easily affected by the high temperature, it is required to be used together with a heat-dissipating device, such as the "Light-emitting diode bulb for improving the heat dissipation effect" of the Republic of China No. M489970, which includes a heat sink cup, a set of ends, a body, at least one light emitting diode element and at least one light transmissive member. The heat dissipation lamp cup includes an open end and an assembly space that communicates with the open end. The base body is disposed in the assembly space, and the light emitting diode is disposed on a side of the open end of the seat body, the light transmitting member Provided on the open end of the heat-dissipating lamp cup, the set of the connecting end is disposed at one end of the heat-dissipating lamp cup away from the open end, and the large-area contact of the heat-dissipating lamp cup with the seat body and the outer side of the heat-dissipating lamp cup Form heat sink fins to improve heat transfer efficiency.

Since the heat-dissipating lamp cup is exposed and made of a metal material, the temperature of the heat-dissipating lamp cup is increased after a period of operation, and if the user accidentally touches the heat-dissipating lamp cup, the scald may be caused. The metal texture is relatively hard and is easily scratched by the fins when replacing the bulb.

The main purpose of the novel is to solve the problem that the user is likely to cause burns or scratches when using the heat-dissipating lamp cup.

To achieve the above objective, the present invention provides a light-emitting diode bulb comprising a plastic case, a heat sink, a light-emitting module, a light-transmissive cover, a power connection base, and a conductive member. The plastic housing includes a hollow passage, the hollow passage defines an inner wall, and the heat dissipating member is fixedly disposed on the inner wall surface. The light emitting module includes a substrate fixed to the heat dissipating member and a substrate disposed away from the heat dissipating member. a light-emitting diode on one side of the heat sink, the light-transmissive cover covering one side of the plastic housing adjacent to the light-emitting module, and forming a receiving space for accommodating the light-emitting diode, the power connection The housing is connected to the plastic housing away from the side of the transparent cover, and is electrically connected to the light emitting module through the conductive member.

It can be seen from the above description that the novel has the following characteristics:

1. By disposing the plastic case outside the heat dissipating member, it is possible to prevent the user from being burned or scratched by the heat dissipating member during use, and maintaining the original heat dissipating performance.

Second, the plastic shell is better and more generous than the heat dissipating component, and the plastic shells of different colors can be used according to different places, so that the color matching is diversified.

The detailed description and technical content of this new model are as follows:

Please refer to FIG. 1 and FIG. 2 , which is a light-emitting diode bulb, which comprises a plastic shell 10 , a heat sink 20 , a light-emitting module 30 , a light-transmitting cover 40 , and a power source . The connector 50 and a conductive member 60. The plastic housing 10 includes a hollow passage 11 , and an inner wall 12 is formed by the hollow passage 11 . The heat dissipation member 20 is a hollow cylinder, and the height of the heat dissipation member 20 is greater than the outer diameter of the heat dissipation member 20 . One third of the heat dissipation member 20 can be added to the surface of the inner wall 12 by the heat dissipation area of the heat sink 20, and the heat sink 20 is built in the plastic case 10. The plastic housing 10 can be prevented from being burned by touching the heat sink 20 when the light bulb is in operation, and the plastic housing 10 is more beautiful and generous than the heat sink 20, and can be used with different colors or colors in different places. Diversified color combinations. The light emitting module 30 includes a substrate 31 fixed to the heat sink 20 and a light emitting diode 32 disposed on a side of the substrate 31 away from the heat sink 20. In the embodiment, the light emitting diode 32 is a plurality of packages, and the LEDs are encapsulated together by a Chip On Board (COB) package to form a light-emitting diode package 33 and directly conduct heat to The substrate 31 is mounted to increase the heat dissipation performance of the LEDs 32. The substrate 31 includes a through hole 311 for the conductive member 60 to pass therethrough, and the heat dissipating member 20 and the substrate 31 can be fixed by using a screw or a thermal conductive adhesive, wherein the heat dissipating member 20 is adjacent to one side of the substrate 31 toward the plastic case. The extending heat dissipating portion 21 extending in the direction of the body 10 increases the contact area between the substrate 31 and the heat sink 20, thereby improving heat dissipation efficiency.

The light transmissive cover 40 includes a main body 42 and an atomizing surface 43 disposed on the surface of the main body 42 and is disposed on one side of the plastic housing 10 adjacent to the light emitting module 30 to form a light receiving portion. The accommodating space 41 of the diode 32, when the light emitted from the illuminating diode 32 contacts the atomizing surface 43, part of the light is reflected back, and finally the light is emitted at different angles. The cover 40, the maximum circumference of the transparent cover 40 is larger than the circumference of the transparent cover 40 connected to the plastic casing 10, thereby increasing the light exit angle to generate a full-circumference illumination of approximately 360 degrees without a dead angle. The atomizing surface 43 allows the light to be evenly dispersed.

The power connector 50 is connected to the side of the transparent cover 40 and is electrically connected to the light module 30 through the through hole 311.

Referring to FIG. 3, a cross-sectional view of another embodiment of the present invention, the outer surface of the heat dissipating member 20 includes a plurality of fins 22 extending toward the plastic housing 10, and the fins 22 are matched. The heat dissipating member 20 has a zigzag structure, and the contact area of the heat dissipating member 20 and the plastic housing 10 is increased by the arrangement of the heat dissipating fins 22, thereby improving heat dissipation efficiency, and the plastic housing 10 is matched with the The heat sinks 22 are provided with a plurality of recesses 13 for receiving the heat sinks 22, and can prevent the user from being scratched by the heat sinks 22 during assembly or disassembly. The heat sinks 22 can also be designed in a strip shape, a sheet shape or a trapezoidal shape to meet specific heat dissipation and fixing requirements.

In summary, the new model has the following characteristics:

1. The heat sink is built in the plastic case, so that the user can be prevented from being burnt by accidentally touching the heat sink during use.

Second, the plastic housing is more beautiful and generous than the heat dissipating component, and can use different colors or colors in combination with different places to make the color matching diversified.

3. The height of the heat dissipating member is greater than one third of the outer diameter of the heat dissipating member, so that the heat dissipating area of the heat dissipating member can be increased, and the heat dissipating performance can be improved.

4. The contact area of the substrate and the heat sink is increased by the arrangement of the extending heat dissipation portion, thereby improving heat dissipation efficiency.

5. The maximum circumference of the transparent cover is larger than the circumference of the transparent cover connected to the plastic casing, so that the light exit angle can be increased, and the full-circumference illumination of nearly 360 degrees is generated without dead angle.

6. The arrangement of the heat sinks increases the contact area between the heat sink and the plastic housing, thereby improving heat dissipation efficiency.

7. The plastic housing is provided with the heat sinks, and includes a plurality of recesses for receiving the heat sinks to prevent the user from being scratched by the heat sinks during assembly or disassembly.

8. The package technology of Chip On Board (COB) can increase the heat dissipation performance of the LED.

IX. According to different usage requirements, the heat sinks can also be designed in the form of strips, sheets or trapezoids to achieve specific heat dissipation and fixing requirements.

10‧‧‧Plastic shell
11‧‧‧ hollow channel
12‧‧‧ inner wall
13‧‧‧ Groove
20‧‧‧ Heat sink
21‧‧‧Extended heat sink
22‧‧‧ Heat sink
30‧‧‧Lighting module
31‧‧‧Substrate
311‧‧‧Perforation
32‧‧‧Lighting diode
33‧‧‧Light Diode Encapsulated Board
40‧‧‧Transparent cover
41‧‧‧ accommodating space
42‧‧‧ Subject
43‧‧‧Atomized surface
50‧‧‧Power connector
60‧‧‧Electrical parts

Figure 1 is an exploded perspective view of the present invention. Figure 2 is a schematic cross-sectional view of the present invention. Fig. 3 is a schematic cross-sectional view showing another embodiment of the present invention.

10‧‧‧Plastic shell

11‧‧‧ hollow channel

12‧‧‧ inner wall

20‧‧‧ Heat sink

21‧‧‧Extended heat sink

30‧‧‧Lighting module

31‧‧‧Substrate

311‧‧‧Perforation

33‧‧‧Light Diode Encapsulated Board

40‧‧‧Transparent cover

50‧‧‧Power connector

60‧‧‧Electrical parts

Claims (8)

A light-emitting diode bulb includes: a plastic casing, comprising a hollow passage, the hollow passage forming an inner wall; a heat dissipating member fixedly disposed on the inner wall surface; and a light-emitting mold positioned and coupled with the heat dissipating member The light-emitting module includes a substrate fixed on the heat sink and a light-emitting diode disposed on a side of the substrate away from the heat-dissipating member; a light-transmissive cover covering the plastic case and forming a receiving space for accommodating the light emitting diode; a power connecting base connected to the plastic housing away from the side of the transparent cover; and a conductive member electrically connecting the light emitting module and the power connecting base . The light-emitting diode bulb of claim 1, wherein the heat sink is a hollow cylinder, and the height of the heat sink is greater than one third of an outer diameter of the heat sink. The light-emitting diode bulb of claim 1, wherein the outer surface of the heat sink comprises a plurality of heat sinks extending toward the plastic housing. The light-emitting diode bulb according to claim 3, wherein the heat sinks have a zigzag structure in cooperation with the heat sink. The light-emitting diode bulb of claim 3, wherein the plastic housing comprises a plurality of grooves for accommodating the heat sinks. The light-emitting diode bulb of claim 1, wherein a maximum circumference of the light-transmissive cover is larger than a circumference of the transparent cover connected to the plastic casing, thereby increasing an exit angle of the light-emitting diode. The light-emitting diode bulb of claim 1, wherein the light-transmissive cover further comprises a main body and an atomizing surface disposed on the surface of the main body. The light-emitting diode bulb of claim 1, wherein the substrate comprises a through hole through which the conductive member is electrically connected to the light-emitting module and the power connection.