CN106151898B

CN106151898B - LED bulb

Info

Publication number: CN106151898B
Application number: CN201510949998.4A
Authority: CN
Inventors: 占贤武; 黄德凯; 刘文征
Original assignee: Suzhou Hanraysun Optoelectronic Technology Co ltd
Current assignee: SUZHOU HANRAYSUN OPTOELECTRONIC Co.,Ltd.
Priority date: 2015-12-18
Filing date: 2015-12-18
Publication date: 2020-05-22
Anticipated expiration: 2035-12-18
Also published as: CN106151898A

Abstract

The invention discloses an LED bulb which comprises a lamp holder (2), a radiator (4) and a lampshade (6), wherein a shaft (10) extends upwards from the center of the top of the radiator (4), a rotary disc (12) capable of rotating is sleeved on the shaft (10), the rotary disc (12) is positioned between the lamp holder (2) and the radiator (4), a gap is formed between the rotary disc (12) and the lamp holder (2), a first electrode plate (14) is arranged on the upper surface of the rotary disc (12), a second electrode plate (15) is arranged on the surface, opposite to the rotary disc (12), of the lamp holder (2), and an indicator lamp (16) is arranged on the side wall of the lamp holder (2); after the rotary disc (12) is thermally expanded, the first electrode plate (14) can be in contact with the second electrode plate (15), and after the first electrode plate (14) is in contact with the second electrode plate (15), the indicator lamp (16) can emit light.

Description

LED bulb

Technical Field

The invention relates to a bulb, in particular to an LED bulb.

Background

At present, an LED lamp is used as a household lighting lamp for replacing a tungsten lamp and a fluorescent lamp, and due to the advantages of low energy consumption, high lighting effect, no mercury, no radiation pollution, renewable materials and the like, the LED lamp is increasingly popular with consumers today with increasingly tense energy sources. In many days, the existing LED bulb does not have any warning function, and particularly, after the LED bulb works for a long time, the LED bulb generates a large amount of heat inside the LED bulb, so that overheating occurs, and at this time, if the LED bulb is not timely stopped, the service life of the LED chip is seriously affected.

Disclosure of Invention

The invention aims to provide an LED bulb with a warning function.

In order to solve the technical problems, the invention provides an LED bulb, which comprises a lamp cap, a radiator and a lampshade, wherein the lamp cap is connected with the top of the radiator, the lampshade is connected with the bottom of the radiator, a circular PCB is arranged on the bottom wall of the radiator, a plurality of LED wafers for emitting light are uniformly arranged on the PCB at intervals,

a shaft extends upwards from the center of the top of the radiator, the top end of the shaft extends into the lamp cap, a rotatable turntable is sleeved on the shaft and is positioned between the lamp cap and the radiator, a gap is reserved between the turntable and the lamp cap, a first electrode plate is arranged on the upper surface of the turntable, a second electrode plate is arranged on the surface, opposite to the turntable, of the lamp cap, and an indicator lamp is arranged on the side wall of the lamp cap;

the first electrode plate can be in contact with the second electrode plate after the rotary disc is thermally expanded, and the indicator light can emit light after the first electrode plate is in contact with the second electrode plate.

The back of the PCB is connected with the bottom wall of the radiator through a heat conducting adhesive layer.

A plurality of radiating fins are formed on the surface of the radiator at uniform intervals.

The lamp cap is detachably connected with the radiator.

The lamp cap is connected with the shaft on the radiator in a threaded fit manner.

And a fluorescent layer is arranged on the outer surface of the lampshade.

Compared with the prior art, the invention has the beneficial effects that: according to the LED lamp, when the LED bulb is overheated, heat can be transferred to the rotary disc, the rotary disc can enable the first electrode plate to be in contact with the second electrode plate after being gradually heated and expanded, and the indicator lamp can emit light after the first electrode plate is in contact with the second electrode plate, so that the warning effect is achieved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but the present invention is not limited thereto.

Referring to fig. 1, the LED bulb of the present invention comprises a lamp cap 2, a heat sink 4 and a lamp shade 6, wherein the lamp cap 2 is connected with the top of the heat sink 4, the lamp shade 6 is connected with the bottom of the heat sink 4, a circular PCB 8 is disposed on the bottom wall of the heat sink 4, a plurality of LED chips 9 for emitting light are disposed on the PCB 8 at regular intervals,

a shaft 10 extends upwards from the center of the top of the radiator 4, the top end of the shaft 10 extends into the lamp cap 2, a rotary disc 12 capable of rotating is sleeved on the shaft 10, the rotary disc 12 is positioned between the lamp cap 2 and the radiator 4, a gap is reserved between the rotary disc 12 and the lamp cap 2, a first electrode plate 14 is arranged on the upper surface of the rotary disc 12, a second electrode plate 15 is arranged on the surface of the lamp cap 2 opposite to the rotary disc 12, and an indicator light 16 is arranged on the side wall of the lamp cap 2;

after the rotary disc 12 is thermally expanded, the first electrode plate 14 can be in contact with the second electrode plate 15, and after the first electrode plate 14 is in contact with the second electrode plate 15, the indicator lamp 16 can emit light.

Because when the LED bulb is overheated, can transmit heat to carousel 12, this carousel 12 can make first electrode piece 14 and second electrode piece 15 contact after being heated gradually and expand, first electrode piece 14 can make after contacting with second electrode piece 15 pilot lamp 16 is luminous to play the warning effect.

In addition, as shown in fig. 1, in the present invention, the back surface of the PCB 8 is connected to the bottom wall of the heat sink 4 through the thermal conductive adhesive layer, so that a large heat exchange area between the PCB 8 and the heat sink 4 can be ensured, thereby ensuring a good heat dissipation effect of the present invention. Meanwhile, a plurality of radiating fins are formed on the surface of the radiator 4 at uniform intervals, and due to the existence of the plurality of radiating fins, the radiator has a larger radiating area, and the radiating effect of the radiator can be improved, so that the radiator has a longer service life. In addition, the lamp cap 2 is detachably connected with the heat sink 4, preferably, the lamp cap 2 is connected with the shaft 10 on the heat sink 4 in a threaded fit manner, so that the lamp cap 2 and the heat sink 4 can be assembled or disassembled conveniently, and a user can conveniently manufacture and maintain the LED lamp. Finally, a fluorescent layer (not shown) is arranged on the outer surface of the lampshade 6, and due to the existence of the fluorescent layer, after the lamp is extinguished, residual light still exists in the fluorescent layer, so that a user can conveniently perform next action by means of the residual light, and the purpose of facilitating the user is achieved.

Claims

1. The utility model provides a LED bulb, includes lamp holder (2), radiator (4) and lamp shade (6), lamp holder (2) with the top of radiator (4) is connected, lamp shade (6) with the bottom of radiator (4) is connected, be provided with circular shape PCB board (8) on the diapire of radiator (4), even spaced is provided with many LED wafers (9) that are used for luminous on PCB board (8), its characterized in that:

a shaft (10) extends upwards from the center of the top of the radiator (4), the top end of the shaft (10) extends into the lamp cap (2), a rotatable turntable (12) is sleeved on the shaft (10), the turntable (12) is located between the lamp cap (2) and the radiator (4), a gap is formed between the turntable (12) and the lamp cap (2), a first electrode plate (14) is arranged on the upper surface of the turntable (12), a second electrode plate (15) is arranged on the surface, opposite to the turntable (12), of the lamp cap (2), and an indicator lamp (16) is arranged on the side wall of the lamp cap (2);

the first electrode plate (14) can be in contact with the second electrode plate (15) after the rotary disc (12) is thermally expanded, and the indicator lamp (16) can emit light after the first electrode plate (14) is in contact with the second electrode plate (15);

the back surface of the PCB (8) is connected with the bottom wall of the radiator (4) through a heat conducting adhesive layer;

a plurality of radiating fins are formed on the surface of the radiator (4) at uniform intervals.

2. The LED bulb of claim 1, wherein: the lamp holder (2) is detachably connected with the radiator (4).

3. The LED bulb of claim 2, wherein: the lamp holder (2) is connected with the shaft (10) on the radiator (4) in a threaded fit manner.

4. The LED bulb of claim 1, wherein: and a fluorescent layer is arranged on the outer surface of the lampshade (6).