CN201462472U - Indoor led lighting bulb - Google Patents

Abstract

An indoor LED lighting bulb solves the problem of heat dissipation of LED lighting fixtures. It includes an LED light source, a circuit board on which the LED light source is installed, a light-transmitting mask and an electrically connected lamp holder, and the circuit board is bonded to the On a heat dissipation device, the heat dissipation device is integrally made of a hollow radiator and a chimney-shaped hollow cylinder located on one end surface of the radiator, and a plurality of cooling fins are arranged at intervals along the circumferential direction of the radiator, and the radiator , the chimney-shaped column and the spacer parts of the heat dissipation fins form a plurality of heat dissipation channels directly convected with the air. The lamp not only has a light structure and a beautiful appearance, and is suitable for indoor lighting, but also can effectively improve heat dissipation efficiency, prolong the service life of LEDs, and ensure the normal use of LED lighting lamps.

Description

Indoor LED Lighting Bulbs

technical field

The utility model relates to the field of LED lighting, and further relates to an indoor LED lighting bulb.

Background technique

With its advantages of energy saving, high efficiency and environmental protection, LED has gradually replaced traditional lighting sources. However, due to the small size and high brightness of the LED light source, the heat generated by it is relatively concentrated. Therefore, it is particularly important to effectively solve the heat dissipation problem of the lighting fixture using the LED as the light source.

At present, most of the common LED lighting fixtures are equipped with huge and heavy heat sinks to dissipate heat through heat conduction. This structure and heat dissipation method are far from enough for high-power LED light sources. Therefore, LED light sources are easily burned out and affect the normal use of the entire lamp.

Utility model content

In order to solve the above technical problems, the utility model provides an LED lighting bulb for indoor application, which not only has a light structure and beautiful appearance, is suitable for indoor lighting, but also can effectively improve heat dissipation efficiency, prolong the life of LED, and ensure the normal operation of LED lighting. use.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

An indoor LED lighting bulb, comprising an LED light source, a circuit board on which the LED light source is installed, a light-transmitting mask and an electrically connected lamp holder, characterized in that the circuit board is bonded to a heat sink, The heat sink is integrally made of a hollow radiator and a chimney-shaped hollow cylinder located on one end surface of the radiator, and a plurality of cooling fins are arranged at intervals along the circumferential direction of the radiator. The radiator, the chimney-shaped cylinder And the spaced parts of the heat dissipation fins form a plurality of heat dissipation channels that directly convect air.

Furthermore, the LED lighting bulb also includes a casing with a built-in power supply, and a detachable cover is provided at one end of the opening of the casing to connect with the radiator, and the other end is connected with the lamp head.

Further, a positioning post for mechanically connecting the heat sink with the cover plate and the housing, and a through hole for the positive and negative lead wires of the circuit to pass through are arranged between the heat dissipation fins.

Further, the circuit board is ring-shaped, and its center passes through the chimney-shaped column and is bonded to the end surface of the radiator through thermal conductive silica gel.

Further, the inner wall of the chimney-shaped column is provided with convex ribs.

Further, the light-transmitting mask is buckled behind the LED light source, and its lower edge is tightly buckled and sealed with the heat sink, and an opening is left on the upper edge to match the outer wall of the chimney-shaped cylinder, and the chimney-shaped The cylinder port is exposed outside the mask through the opening.

The beneficial effects brought by the utility model:

The circuit board welded with the LED light source is bonded to the end surface of the radiator by coating heat-conducting silica gel, and the heat is conducted to the radiator, and then passes through a plurality of gaps formed by the hollow radiator, the chimney-shaped column and the spacer of the cooling fins. Directly convected with the air channel to dissipate heat, greatly improving the heat dissipation efficiency, so that the purpose of effectively solving the heat dissipation problem can be effectively solved without adding heat dissipation materials and increasing the weight of the lamp.

Description of drawings

Fig. 1 is a perspective view of an embodiment of the utility model;

Fig. 2 is a sectional view of Fig. 1;

Figure 3 is an exploded view of Figure 1;

Detailed ways

Below by accompanying drawing, the utility model is described in further detail:

Referring to Figures 1 to 3, the indoor LED lighting bulb of this embodiment includes an LED light source 1, and a circuit board 2 on which the LED light source 1 is installed. The circuit board 2 can be independent of each LED light source, or can be all LED light sources Shared one, the present embodiment is a circular circuit board. The heat dissipation device is integrally made of a hollow radiator 3 and a chimney-shaped hollow cylinder 4 located on one end surface of the radiator 3, and the hollow part thereof communicates. A plurality of cooling fins 5 are arranged at intervals along the circumference of the radiator 3 , so that a number of convection channels directly in contact with air can be formed at intervals between the radiator 3 , the chimney-shaped column 4 and the cooling fins 5 to dissipate heat.

A cavity shell 8 is set between the radiator 3 and the lamp holder 7, and a switching power supply is placed in the cavity. A cover plate 9 detachable from the shell is set at one end of the opening of the shell 8, and the cover plate 9 is connected to the shell by connecting screws 10. 8 connections. The end of the casing 8 opposite to the open end is connected to the lamp cap 7 by screw thread or other mechanical means. Positioning columns 11 are arranged between the cooling fins 5 , and positioning screws 12 pass through the housing 8 , the cover plate 9 and the positioning columns 11 on the radiator 3 to connect the three parts. The positive and negative leads 13 of the circuit on the circuit board 2 pass through the through hole 14 on the radiator 3 and the through hole 15 on the cover plate 9 to connect to the switching power supply installed in the housing 8 .

The LED light sources 1 are uniformly arranged around the ring circuit board 2, and the center of the ring circuit board 2 passes through the chimney-shaped cylinder 4 and is bonded to the end surface of the heat sink 3 with heat-conducting silica gel.

In order to increase the heat dissipation area, a series of convex ribs 16 are arranged on the inner wall of the chimney-shaped cylinder 4 .

Face shield 17 adopts the good material of translucent performance, and can make light soft and uniform by coating some scattering agents on its surface. When the face shield 17 is buckled on the outside of the LED light source 1, its lower edge is tightly buckled and sealed with the radiator 3, and an opening 18 that is closely matched with the outer wall of the chimney-shaped cylinder 4 is left on its upper edge, and the mouth of the chimney-shaped cylinder passes through Opening 18 is exposed on the outside of face shield 3, and like this, whole light fixture has just formed some cooling passages with air convection at the cavity of hollow radiator 3, the cavity of chimney-shaped column 4, the spacing part of cooling fin 5. Greatly improved heat dissipation efficiency.

The light-transmitting mask 17 can be made into a regular shape according to decoration and aesthetic needs, such as a cylinder, a sphere, an ellipsoid or other irregular shapes.

Claims (8)

1. indoor LED lighting bulb, comprise led light source and install led light source wiring board, the printing opacity face shield that is located at the led light source outside and the lamp holder that is electrically connected, it is characterized in that: described wiring board is bonded on the heat abstractor, described heat abstractor is made into integration by the radiator of hollow and the chimney-like hollow cylinder that is positioned on radiator one end face, along described radiator a plurality of radiating fins are set at interval circumferentially, the compartment of described radiator, chimney-like cylinder and radiating fin forms a plurality of direct and cross-ventilated heat dissipation channels.

2. indoor LED lighting bulb according to claim 1 is characterized in that: comprise that also one is built-in with the housing of power supply, this shell nozzle one end is provided with a dismountable cover plate and is connected with radiator, and the other end is connected with lamp holder relatively.

3. indoor LED lighting bulb according to claim 2 is characterized in that: be provided with between described radiating fin radiator and described cover plate, the reference column of housing mechanical connection and the through hole that power supply road positive and negative lead wires passes.

4. according to claim 1,2 or 3 described indoor LED lighting bulbs, it is characterized in that: described wiring board is a ring-type, and its center is passed the chimney-like cylinder and is bonded on radiator one end face by heat conductive silica gel.

5. indoor LED lighting bulb according to claim 4 is characterized in that: described led light source be arranged in described loop line plate around.

6. indoor LED lighting bulb according to claim 1, it is characterized in that: the inwall of described chimney-like cylinder is provided with fin.

7. indoor LED lighting bulb according to claim 1, it is characterized in that: after described printing opacity face shield cover is buckled in described led light source, its lower limb and described radiator closely fasten and sealing, its top edge leaves an opening that cooperates with described chimney-like cylinder outer wall, and described chimney-like cylinder mouth is exposed to OFP by described opening.

8. indoor LED lighting bulb according to claim 1 is characterized in that: described printing opacity face shield is a cylinder, spheroid, spheroid or irregular body.

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