CN201739820U - LED bulb - Google Patents

Abstract

The utility model relates to a lighting lamp technical field especially relates to a LED bulb, and it is including lamp holder, lamp shade, heat abstractor, and the lamp holder is fixed in heat abstractor's bottom, and the lamp shade is fixed on heat abstractor's top, still includes the LED module that is formed by a plurality of LED chip encapsulation, and the LED module is hugged closely and is fixed at heat abstractor's top terminal surface, and the LED module is located the lamp shade, and the lamp holder is connected with LED module electricity. The utility model discloses a by the LED module that a plurality of LED chip package formed, the volume of LED bulb can be done lessly, and it is more convenient to install and use, when luminous, the light-emitting effect is even, can not have the dark spot, and the color rendering index is high.

Description

A kind of LED light bulb

Technical field:

The utility model relates to the technical field of lighting fixtures, in particular to an LED light bulb.

Background technique:

In recent years, because LED (Light Emitting Diode, light-emitting diode) has a long service life, low energy consumption, and remarkable energy saving, LED has been widely used as a light source in daily life. For example, some manufacturers have designed LED bulbs that can be directly installed in ordinary bulb sockets to replace existing bulbs such as tungsten lamps.

Existing LED (Light Emitting Diode, light-emitting diode) light bulb mainly comprises lamp cap, lampshade, circuit board, the LED that welding is fixed on circuit board, and the bottom end of circuit board is fixed with aluminum alloy heat sink, and lamp cap is fixed on aluminum alloy heat sink. The bottom end of the lamp head is electrically connected to the LED, and the lampshade is installed and fixed on the top of the circuit board to cover the LED. When the LED is working for lighting, the light generated by the LED can be irradiated through the lampshade to achieve the purpose of lighting. However, this Most of these LED bulbs use LEDs that package a single LED chip, so they must solder multiple LEDs on the circuit board to achieve the brightness required for general lighting, which increases the volume of the entire lamp, which is not conducive to installation and use, and the formation of multiple LEDs The light source is uneven, has dark spots, and has low color rendering.

Utility model content:

The purpose of the utility model is to provide an LED light bulb with small volume, uniform light output and high color rendering in view of the shortcomings of the prior art.

The purpose of this utility model is achieved through the following technical measures:

An LED light bulb, which includes a lamp cap, a lampshade, and a heat sink. The lamp cap is fixed at the bottom of the heat sink, and the lampshade is fixed at the top of the heat sink. It also includes an LED module packaged by a plurality of LED chips. It is closely attached to and fixed on the top end surface of the heat sink, and the LED module is located in the lampshade, and the lamp holder is electrically connected to the LED module.

It further includes a power supply module, the bottom of the cooling device is provided with an accommodating area for placing the power supply module, the power supply module is placed in the accommodating area, the lamp holder is electrically connected to the input end of the power supply module, and the output end of the power module is connected to the The LED module is electrically connected.

The heat dissipation device is a ceramic heat sink with heat dissipation fins formed on its outer side.

The heat dissipation device is circular, and there are a plurality of heat dissipation fins, and the plurality of heat dissipation fins are radial.

The lamp cap includes a lamp cap connector and a lamp cap plastic part, the lamp cap plastic part is fixed on the bottom end of the heat sink by screws, and the lamp cap connector is threadedly connected to the bottom end of the lamp cap plastic part.

A first waterproof sealing ring is provided between the plastic part of the lamp cap and the heat dissipation device.

The lampshade is provided with a fastening block, and the heat dissipation device is provided with a fastening hole matching the fastening block, and the lampshade is fastened and fixed on the top of the heat dissipation device.

A second waterproof sealing ring is provided between the lampshade and the heat sink.

The beneficial effects of the utility model are:

The utility model includes a lamp cap, a lampshade, and a heat dissipation device. The lamp cap is fixed on the bottom of the heat dissipation device, and the lampshade is fixed on the top of the heat dissipation device. It also includes an LED module packaged by a plurality of LED chips, and the LED module is tightly fixed. On the top end surface of the heat sink, and the LED module is located in the lampshade, the lamp holder is electrically connected with the LED module. The utility model adopts an LED module packaged by a plurality of LED chips, the volume of the LED bulb can be made smaller, and the installation and use are more convenient. high.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of the utility model;

Fig. 3 is the exploded schematic view of the utility model;

Fig. 4 is a schematic structural view of the utility model cooling device;

Fig. 5 is a bottom view of the heat sink of the present invention.

Figures 1, 2, 3, 4 and 5 include:

11——Lamp holder connector 12——Lamp holder plastic parts

2——lampshade 21——fastening block

3——radiating device 31——housing area

32——radiating fins 33——button holes

4——LED Module 5——Power Module

6——The first waterproof sealing ring 7——The second waterproof sealing ring

Detailed ways:

The utility model is further described below in conjunction with the accompanying drawings. As shown in Figures 1 to 5, a LED light bulb provided by the utility model includes a lamp cap, a lampshade 2, and a heat sink 3, and the lamp cap is fixed on the bottom of the heat sink 3. end, the lampshade 2 is fixed on the top of the heat sink 3, and also includes an LED module 4 packaged by a plurality of LED chips. The generated heat can be transferred to the cooling device 3 in time, and the LED module 4 is located in the lampshade 2 , and the lamp cap is electrically connected with the LED module 4 .

The utility model further includes a power supply module 5, the bottom of the cooling device 3 is provided with an accommodating area 31 for placing the power supply module 5, the power supply module 5 is placed in the accommodating area 31, and the input end of the lamp holder and the power supply module 5 Electrically connected, the output end of the power supply module 5 is electrically connected to the LED module 4 , and the power supply module 5 is used to provide power for the LED module 4 .

The heat dissipation device 3 of this embodiment is a ceramic heat sink. The ceramic heat sink has the characteristics of good heat dissipation performance, good insulation effect, and low manufacturing cost. The outer side of the heat dissipation device 3 is formed with heat dissipation fins 32, wherein the heat dissipation device 3 is a round The heat dissipation fins 32 are plural, and the plurality of heat dissipation fins 32 are radial. This structure can increase the heat dissipation area of the heat dissipation device 3 and improve the heat dissipation effect. Certainly, the heat dissipation device 3 of the present invention can also be in other shapes, and is not limited to the circle selected in this embodiment.

The lamp cap of this embodiment includes a lamp cap connector 11 and a lamp cap plastic part 12. The lamp cap plastic part 12 is fixed on the bottom end of the heat sink 3 by screws. The lamp cap connector 11 and the power supply module 5 can be insulated.

In this embodiment, a first waterproof sealing ring 6 is provided between the plastic part 12 of the lamp cap and the heat dissipation device 3, a second waterproof sealing ring 7 is provided between the lampshade 2 and the heat dissipation device 3, the first waterproof sealing ring 6, the second waterproof sealing ring The sealing ring 7 is used to prevent rainwater, dust, etc. from entering the bulb.

The lampshade 2 of this embodiment is provided with a fastening block 21, and the heat sink 3 is provided with a fastening hole 33 matching the fastening block 21. The fastening block 21 is fastened and fixed in the fastening hole 33, so that the lampshade 2 is fastened and fixed. On the top of the heat sink 3, it is convenient to install or disassemble the lampshade 2.

The utility model can be applied to lamps such as street lamps. When in use, as long as the lamp cap is threadedly connected to the light bulb socket of the lamp, the LED module 4 can be connected to the power supply through the power module 5 and the lamp cap connector 11, and then emit light for lighting. The light can be irradiated through the lampshade 2. At the same time, the heat generated when the LED module 4 emits light can be transferred to the heat sink 3 in time, and then emitted by the heat sink 3 to ensure the normal operation of the LED module 4. The utility model is an LED module 4 packaged by a plurality of LED chips, which directly encapsulates a plurality of LED chips together through epoxy resin, so the volume of the LED bulb can be made smaller, and the installation and use are more convenient. When emitting light, the light output effect is uniform, there will be no dark spots, and the color rendering is high.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (8)

1. LED bulb, it includes lamp holder, lampshade (2), heat abstractor (3), lamp holder is fixed on the bottom of heat abstractor (3), lampshade (2) is fixed on the top of heat abstractor (3), it is characterized in that: also comprise the LED module (4) that forms by a plurality of led chip encapsulation, LED module (4) is close to the top end face that is fixed on heat abstractor (3), and LED module (4) is positioned at lampshade (2), and lamp holder is electrically connected with LED module (4).

2. a kind of LED bulb according to claim 1, it is characterized in that: further comprise power supply module (5), the bottom of heat abstractor (3) offers the disposal area (31) that is used to place power supply module (5), power supply module (5) places disposal area (31), lamp holder is electrically connected with the input of power supply module (5), and the output of power supply module (5) is electrically connected with LED module (4).

3. a kind of LED bulb according to claim 1 and 2 is characterized in that: described heat abstractor (3) is a ceramic heat sink, and its outside forms radiating fin (32).

4. a kind of LED bulb according to claim 3 is characterized in that: described heat abstractor (3) is for circular, and radiating fin (32) is a plurality of, and a plurality of radiating fins (32) are radial.

5. a kind of LED bulb according to claim 1, it is characterized in that: described lamp holder comprises lamp holder connector (11), lamp holder plastic parts (12), lamp holder plastic parts (12) is fixed on the bottom of heat abstractor (3) by screw, and lamp holder connector (11) is threaded in the bottom of lamp holder plastic parts (12).

6. a kind of LED bulb according to claim 5 is characterized in that: be provided with first waterproof grommet (6) between described lamp holder plastic parts (12) and the heat abstractor (3).

7. a kind of LED bulb according to claim 1, it is characterized in that: described lampshade (2) is provided with snapping piece (21), heat abstractor (3) offers the snapping hole (33) with snapping piece (21) coupling, and lampshade (2) snapping is fixed on the top of heat abstractor (3).

8. a kind of LED bulb according to claim 7 is characterized in that: be provided with second waterproof grommet (7) between described lampshade (2) and the heat abstractor (3).

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