WO2012000225A1

WO2012000225A1 - Led illumination lamp

Info

Publication number: WO2012000225A1
Application number: PCT/CN2010/076506
Authority: WO
Inventors: 黄景温
Original assignee: Wong Raymond
Priority date: 2010-07-01
Filing date: 2010-08-31
Publication date: 2012-01-05
Also published as: CN201779479U

Abstract

An LED illumination lamp includes a standard lamp cap (1), a heat dissipation device (2), an LED illuminant (3) and a lampshade (4) covering the LED illuminant. The heat dissipation device (2) is positioned behind the lampshade (4). The LED illuminant (3) is positioned on the heat dissipation device (2). Fins (21) are positioned around the heat dissipation device (2). Ventilation cavities (22) are formed among adjacent the fins (21). At the external of the fins (21), a bottom case (5) covers the heat dissipation device (2) from the back of the device. Ventilation holes (51) correspond to the ventilation cavities (22) of the heat dissipation device (2), which are positioned at the back of the bottom case (5). The standard lamp cap (1) is fixedly connected to the end of the bottom case. When the lamp is glowing, the heat absorbed from the heat dissipation device can be insulated by the bottom case (5), so the external of the lamp is not hot. The user can easily use the lamp. When the lamp is glowing, air can pass through the ventilation channels which are formed by the ventilation cavities and ventilation holes. The heat of the fins of the heat dissipation device can be taken out of the lamp, and the heat dissipation effect can be improved.

Description

LED lighting bulb

Technical field

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

Background technique

Compared with traditional lighting, LED lighting has the advantages of energy saving, high luminous efficiency and small size. It has become more and more popular in the market, and its popularity has become wider and wider, and with the needs of users. There are also a series of LED products that replace the original lighting structure, such as LED tubes replacing traditional fluorescent tubes, LED lighting bulbs replacing traditional incandescent lamps, etc. Among them, LED lighting bulbs are mainly composed of LEDs, LED covers and LED covers. A standardized joint composition, and taking into account the large heat output of the LED, a metal fin heat sink is disposed at the rear of the LED, and the heat sink is exposed outside the bulb to increase the area in contact with the air. During operation, the air flow around the heat sink will carry away the heat, so that the heat generated when the LED light bulb is working will be transferred to the heat sink and discharged by the blades of the heat sink to achieve the heat dissipation effect; The exposed LED bulb structure of the device will be very hot at the outside of the bulb during operation, especially at the heat sink. If the operator needs to operate the bulb, it is very Burns easily, is not conducive to the operation and use.

Summary of the invention

In view of the above problems, the present invention provides an LED lighting bulb that does not burn hands and has a better heat dissipation effect.

The technical solution adopted by the present invention to solve the technical problem thereof is:

An LED lighting bulb comprises a standard connector, a heat sink, an LED illuminator, and a lamp cover covering the LED illuminator. The heat sink is disposed behind the lamp cover, and the LED illuminator is mounted on the heat sink, and the heat sink is disposed on the outer circumference. a fin, a venting cavity is formed between the adjacent fins, and the bottom of the fin is provided with a bottom shell covering the heat dissipating device from the rear, and a rear side of the bottom shell is provided with a venting hole corresponding to the position of the ventilating cavity of the heat dissipating device. The standard connector is fixedly connected to the rear end of the bottom case.

The invention has the beneficial effects that the outer cover of the heat dissipating device is covered with the bottom case, and the bottom case can isolate the heat absorbed by the heat dissipating device when the light bulb is illuminated, so that the outside of the lamp does not feel hot, which is convenient for the operator. The venting hole provided on the bottom case corresponds to the venting cavity of the heat dissipating device. When the lamp works and the heat dissipating device generates heat, air flows through the ventilating channel formed by the ventilating cavity and the venting hole to form an air flow. The heat on the fins of the heat sink is taken away, thereby bringing about a better heat dissipation effect; in summary, the invention has the advantages of good appearance and good heat dissipation effect, and can prevent the danger caused by overheating of the bulb casing, and is highly innovative and LED lighting bulbs for market prospects.

DRAWINGS

Further description will be made below with reference to the accompanying drawings and specific embodiments:

Figure 1 is a schematic view of the structure of the present invention;

2 is a schematic view of a split structure of the present invention;

Fig. 3 is a schematic view showing the principle of air flow in use in the present invention.

detailed description

1 to 2, an LED lighting bulb provided by the present invention comprises a standard connector 1, a heat sink 2, an LED illuminator 3, and a lamp cover 4 covering the LED illuminator 3. The heat sink 2 is disposed on the lampshade 4 In the rear, the LED illuminator 3 is mounted on the heat sink 2. In this configuration, a power supply for connecting the LED illuminator 3 is provided in the heat sink 2, which is connected to the standard connector 1 at the rear, and is inserted through the standard connector 1. Mounted on the lamp holder, in the energized state, the commercial power is supplied to the LED illuminator 3 via the power source, and the LED illuminator 3 will illuminate. In the present invention, the fins 21 are arranged on the outer circumference of the heat dissipating device 2, and the ventilating chamber 22 is formed between the adjacent fins 21. The fins 21 are provided with a bottom shell 5 covering the heat dissipating device 2 from the rear, and a bottom shell The rear side of the 5 is provided with a venting opening 51 corresponding to the position of the venting chamber 42 of the heat sink 4, and the standard joint 1 is fixedly connected to the rear end of the bottom case 5. Generally, the heat dissipating device 2 is made of aluminum and has a good heat transfer effect, so that the heat is also high during operation. The additional bottom case 5 of the present invention may be a heat-resistant plastic or other suitable material, and is disposed in the heat dissipation. The device 2 can achieve the effect of isolating the heat of the heat dissipating device 2, so that the operator does not get the heat of the heat dissipating device 2 when contacting the bulb; and the venting hole 51 has the structure of the venting chamber 42 formed. A series of ventilation passages communicating from the front of the bulb to the rear, the effect of which is shown by the dashed arrow in FIG. 3, during the operation of the bulb, the heat sink 2 and the fins 21 absorb the heat generated by the LED illuminator 3, Due to the action of the ventilation passage, air will flow from the front portion of the heat sink 2, flow through the venting chamber 42 between the fins 21, and finally flow out from the vent hole 51 to form a circulating air flow to achieve cold air entry. The effect of heat dissipation from hot air.

As a preferred embodiment of the present invention, a mounting surface 23 on which the LED illuminator 3 is mounted is disposed in the middle of the heat dissipating device 2, and the rear portion of the lamp cover 4 is mounted on the outer periphery of the mounting surface 23, thereby preventing heat dissipation of the heat sink 2 to the heat sink 2. The interference is caused; and the size of the front portion of the lampshade 4 is adapted to the size of the bottom case 5, so that the overall shape of the bulb is similar to that of a conventional bulb, and is relatively beautiful.

In summary, the invention has an attractive appearance and good heat dissipation effect, and can prevent the danger caused by overheating of the bulb casing, and is an innovative LED lighting bulb.

Of course, the above is only a preferred embodiment of the present invention, and other equivalent technical solutions and other embodiments are also within the scope of the present invention.

Claims

An LED lighting bulb comprises a standard connector (1), a heat sink (2), an LED illuminator (3), and a lamp cover (4) covering the LED illuminator (3), and the heat sink (2) is disposed on the lampshade ( 4) Rear, the LED illuminator (3) is mounted on the heat sink (2), characterized in that: the heat sink (2) is provided with fins (21) on the outer circumference, and adjacent fins (21) are formed. a ventilation chamber (22), the fin (21) is provided with a bottom case (5) covering the heat sink (2) from the rear, and the rear side of the bottom case (5) is provided with ventilation with the heat sink (4) The vent (51) corresponding to the position of the cavity (42), the standard joint (1) is fixedly connected with the tail end of the bottom case (5).
The LED lighting bulb according to claim 1, characterized in that: in the middle of the heat dissipating device (2), a mounting surface (23) for mounting the LED illuminator (3) is provided, and the lamp cover (4) is provided at the rear Mounted on the outer circumference of the mounting surface (23).
The LED lighting bulb according to claim 2, characterized in that the size of the front portion of the lampshade (4) is adapted to the size of the bottom case (5).