CN201909214U - Inner axial heat dissipation type LED (light-emitting diode) ball lamp - Google Patents

Abstract

The utility model relates to an LED lamp, in particular to an inner shaft cooling type LED bulb lamp. The inner shaft heat-dissipating LED bulb lamp of the utility model sequentially includes an LED lamp holder, an LED power supply, a heat sink, a PCB circuit board, an LED chip, and an LED lens from bottom to top, and is characterized in that it also includes a heat dissipation cover for heat dissipation The lower end of the cover is connected with the LED lamp holder, the upper end is connected with the LED lens, and the radiator is located in the heat dissipation cover. The utility model is provided with a heat dissipation cover to form a heat dissipation space between the heat dissipation cover and the radiator, and an axial aluminum heat sink is arranged under the PCB circuit board, which can quickly transfer heat from the bottom of the LED; the heat dissipation cover is the heat dissipation of the LED An open convection environment is provided, which can exchange the emitted heat with the air outside the LED lamp, so as to achieve rapid heat dissipation.

Description

Inner shaft heat dissipation LED bulb lamp

technical field

The utility model relates to an LED lamp, in particular to an inner shaft cooling type LED bulb lamp.

Background technique

As a new type of energy-saving lighting source in the 21st century, LED lights have the characteristics of high luminous efficiency, long life, low radiation, low voltage, small size, fast start-up speed, safety, environmental protection, shock resistance and pressure resistance, and easy control. commonly used by people. There are many types of LED lamps, including LED bulb lamps, LED tube lamps, LED solar lamps and so on. The core light-emitting part of the LED lamp is the LED tube core. The LED tube core will generate a lot of heat during work. If the heat is not discharged in time, it will affect the service life of the LED tube core. This is also the main factor affecting the service life of the LED lamp. .

In order to solve this problem, most LED lamps are equipped with radiators, which solves the problem of heat dissipation to a certain extent. At present, in the existing LED bulb lamp, the LED chip is welded on the PCB circuit board, and the lower part of the circuit board is connected to the radiator. The radiator adopts a tubular structure, and the bottom of the radiator is directly connected to the lamp holder. Form a closed space, mainly relying on the closed space for heat dissipation; this heat dissipation mode cannot achieve convective heat dissipation, and the heat can only flow inside the closed space and cannot be taken out of the LED bulb quickly, making the LED bulb The lamp maintains a high temperature for a long time, resulting in low heat dissipation efficiency, which cannot fundamentally solve the heat dissipation problem of the LED bulb lamp.

Utility model content

In order to solve the deficiencies of the prior art and fundamentally solve the heat dissipation problem of the LED bulb lamp, the purpose of the utility model is to provide an inner shaft heat dissipation LED bulb lamp.

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

An inner-shaft heat-dissipating LED bulb lamp, which sequentially includes an LED lamp holder, an LED power supply, a radiator, a PCB circuit board, an LED chip, and an LED lens from bottom to top, is characterized in that it also includes a heat dissipation cover, the lower end of the heat dissipation cover The LED lamp head is connected, the upper end of which is connected with the LED lens, and the radiator is located in the heat dissipation cover.

The heat sink described in the utility model adopts an axial aluminum heat sink, and a wire hole passing through the heat sink is provided in the center of the heat sink. A cavity matching the size of the power supply is provided at the lower end of the heat sink. The cooling fins are distributed along the axis into a circle, and a heat dissipation channel is provided between each cooling fin.

The heat dissipation cover described in the utility model comprises: a fixed ring, which is used to fix the LED lens; a connecting ring, which is used to connect the LED lamp head; and a support rod between the fixed ring and the connecting ring; as one.

The heat dissipation cover also includes a cassette arranged in the fixed ring, and the cassette is provided with locking teeth; the periphery of the lower end of the LED lens is provided with locking holes matching the locking teeth.

The fixing ring is provided with threads, and the lower end of the LED lens is provided with threads matching the threads inside the fixing ring; the connecting ring is provided with threads, and the upper end of the LED lamp holder is provided with threads on the connecting ring. matching threads.

The PCB circuit board and the radiator described in the utility model are provided with screw holes, and the PCB circuit board is fixed on the radiator by screws.

The inner shaft heat dissipation LED bulb lamp of the present invention also includes a silica gel pad located between the heat sink and the PCB circuit board.

The thickness of the silica gel pad is 0.3mm.

The material of the heat dissipation cover is hard plastic obtained by injection molding.

The beneficial effect of the utility model is that: the utility model is provided with a heat dissipation cover, and a heat dissipation space is formed between the heat dissipation cover and the radiator. The heat dissipation cover provides an open convection environment for the heat dissipation of the LED, and is arranged under the PCB circuit board The axial aluminum radiator can quickly transfer heat from the bottom of the LED; it can exchange the emitted heat with the air outside the LED lamp to achieve rapid heat dissipation. In addition, the utility model sets a layer of silica gel pad between the radiator and the PCB circuit board, which can effectively reduce the thermal resistance between the PCB circuit board and the axial aluminum radiator, and can avoid the increase of thermal resistance caused by actual process problems , and further enhance the cooling effect.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Figure 1 is the appearance diagram of the utility model inner shaft heat dissipation LED bulb lamp;

Fig. 2 is a disassembled diagram of the inner shaft heat dissipation LED bulb lamp of the present invention;

Fig. 3 is a cross-sectional view of the axial aluminum radiator of the utility model axial cooling type LED bulb lamp;

Fig. 4 is a structural schematic diagram of the heat dissipation cover of the shaft heat dissipation LED bulb lamp of the present invention.

Detailed ways

As shown in Fig. 1 and Fig. 2, the axial cooling type LED bulb lamp of the present invention sequentially includes an LED lamp holder 1, an LED power supply 2, a radiator 4, a PCB circuit board 6, an LED chip 7, and an LED lens 8, and is characterized in that : It also includes a heat dissipation cover 3, the lower end of the heat dissipation cover 3 is connected to the LED lamp holder 1, the upper end thereof is connected to the LED lens 8, and the radiator 4 is located in the heat dissipation cover 3.

The preferred radiator .4 of the utility model adopts an axial aluminum radiator, the center of which is provided with a wire hole 41 axially penetrating through the radiator, and the lower end of the radiator is provided with a cavity matching the size of the power supply to dissipate heat. Heat sinks 42 are arranged on the device, and the heat sinks are distributed along the axis into a circle, and heat dissipation channels 43 are arranged between each heat sink. More preferably, the heat dissipation cover includes: a fixing ring 31 for fixing the LED lens 8; a connecting ring 33 for connecting the LED lamp head 1; and a support rod 32 between the fixing ring 31 and the connecting ring 33; the fixing ring 31 and connecting ring 33 are connected as a whole by support rod 32.

In the preferred solution of the present utility model, the heat dissipation cover 3 also includes a cassette 34 arranged in the fixed ring 31, the cassette 34 is provided with locking teeth, and the periphery of the lower end of the LED lens 8 is provided with a locking hole matching the locking teeth. The LED lens 8 is connected to the upper end of the heat dissipation cover 3 in a snap-fitting manner. Or be provided with screw thread in fixed ring 31, described LED lens 8 lower end is provided with the screw thread that matches with the screw thread inside fixed ring 31, and LED lens 8 is screwed in fixed ring 31 inside; Described connecting ring 33 is provided with screw thread , the upper end of the LED lamp holder 1 is provided with a thread matching the thread in the connecting ring 33 , and the LED lamp holder is screwed into the connecting ring 33 .

In the preferred solution of the present invention, the PCB circuit board 6 and the heat sink 4 are provided with screw holes, and the PCB circuit board 6 is fixed on the heat sink 4 by screws.

Preferably, the inner shaft heat dissipation LED bulb lamp of the present invention further includes a silicone pad 5 located between the radiator 4 and the PCB circuit board 6 , and the thickness of the silicone pad 5 is preferably 0.3mm. The silicone pad can effectively reduce the thermal resistance between the PCB circuit board and the axial aluminum radiator, which can avoid the increase of thermal resistance caused by actual process problems and further enhance the heat dissipation effect.

The material of the heat dissipation cover 3 is hard plastic obtained by injection molding.

In the specific embodiment, the total height of the LED bulb lamp is 120mm, wherein the height of the base is 35-45mm, the height of the heat dissipation cover is 50-55mm, and the height of the LED lens is 25-30mm. The height of the axial aluminum heat sink of the present invention is 45-50mm, wherein the thickness of each heat sink is no more than 2mm, and the distance at the widest part of the heat dissipation channel is 2.5-3mm, and the heat sink is distributed axially around the heat sink. The radiator of the structure has a large heat dissipation area. In order to further increase the heat dissipation area of the radiator, the cross section of the heat sink is roughly antler-shaped; in addition, only one wire hole is set in the center of the radiator, and the diameter of the wire hole does not exceed 5mm, the heat generated by the work of the LED chip is directly transferred through the radiator at the bottom, and exchanges heat with the air around the radiator to achieve convective heat dissipation.

The above implementations are only preferred implementations or examples of the present utility model, and cannot be regarded as limitations on the present utility model. Any insubstantial deformation or replacement made by those skilled in the art on this basis belongs to the present utility model scope of protection.

Claims (8)

1. axle cooling type LED bulb lamp in a kind, comprise LED lamp holder, LED power supply, radiator, PCB circuit board, led chip, LED lens from bottom to up successively, it is characterized in that: it has also comprised a heat dissipating housing, the heat dissipating housing lower end connects the LED lamp holder, its upper end connects the LED lens, and radiator is positioned at heat dissipating housing.

2. axle cooling type LED bulb lamp in according to claim 1, it is characterized in that: described radiator adopts axial Aluminium Radiator, its center is provided with a cable-through hole that axially runs through radiator, the lower end of radiator be provided with one with the cavity of power supply size coupling, radiator is provided with fin, fin becomes circle distribution along axle, is provided with heat dissipation channel between the every fin.

3. axle cooling type LED bulb lamp in according to claim 1, it is characterized in that: described heat dissipating housing comprises: retainer plate is used for fixing the LED lens; Connecting ring is in order to connect the LED lamp holder; And the support bar between retainer plate and connecting ring; Retainer plate and connecting ring are connected as a single entity by support bar.

4. axle cooling type LED bulb lamp in according to claim 3, it is characterized in that: described heat dissipating housing also is included in the cassette tape that is provided with in the retainer plate, and cassette tape is provided with latch; End periphery is provided with the hole clipping of mating with latch under the described LED lens.

5. axle cooling type LED bulb lamp in according to claim 3 is characterized in that: be provided with screw thread in the described retainer plate, described LED lens lower end is provided with the screw thread that the screw thread with retainer plate inside is complementary; Be provided with screw thread in the described connecting ring, described LED lamp holder upper end be provided with connecting ring on the screw thread that is complementary of screw thread.

6. axle cooling type LED bulb lamp in according to claim 1, it is characterized in that: described PCB circuit board and radiator are provided with screw, and the PCB circuit board is fixed on the radiator by screw.

7. axle cooling type LED bulb lamp in according to claim 1, it is characterized in that: it also comprises the silicagel pad between radiator and PCB circuit board.

8. axle cooling type LED bulb lamp in according to claim 7, it is characterized in that: the thickness of described silicagel pad is 0.3mm.

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