Heat dissipation type LED bulb

Abstract

The heat dissipation type LED bulb comprises a lamp body and a lamp shell, a light source plate and a drive circuit board are arranged in the lamp body, and a concave horn-shaped heat dissipation channel is formed in the bottom face of the lamp shell. A through hole is formed in the side wall of the horn-shaped heat dissipation channel; a plurality of slotted holes are fixed at the joint of the lamp shell and the lamp body; the light source plate is attached to the side wall of the horn-shaped heat dissipation channel, a light reflecting plate is fixed in the lamp shell, a light guide plate is fixed to the bottom face of the light reflecting plate, and a heat dissipation fan is fixed to the top of the horn-shaped heat dissipation channel. And the slotted hole, the cooling fan and the trumpet-shaped cooling channel form an air circulation channel. The LED lamp is reasonable in structural arrangement, uniformity of irradiation light can be guaranteed, an air circulation channel can be formed by matching the radiating fan with the slotted holes and the horn-shaped radiating channels, heat of the light source plate and heat of the driving circuit board can be taken away, radiating performance can be improved, the service life of the driving circuit board and the light source plate is prolonged, and the LED lamp is suitable for popularization and application. And the applicability and the practicability are high.

Description

Technical Field

[0001] The utility model belongs to the technical field of bulbs, and in particular relates to a heat dissipation type LED bulb. Background Art

[0002] LED bulbs are solid-state semiconductor devices that can convert electrical energy into visible light. During the conversion process, a large amount of heat is generated. The bottom surface of traditional LED bulbs is mostly a solid surface without holes. Heat can only be dissipated through the outer wall of the LED bulb. The heat dissipation area and heat dissipation effect are very limited. In addition, the bulb shell is affected by high temperature for a long time, and it is easy to deform at the connection, affecting the stability of the installation and easily causing loosening or falling off, so the applicability and practicality are limited. Utility Model Content

[0003] The utility model aims to provide a heat dissipation type LED bulb with reasonable structure and conducive to improving heat dissipation performance.

[0004] The technical solution to achieve the purpose of the utility model is a heat dissipation type LED bulb, comprising a lamp body and a lamp housing, wherein a light source board and a driving circuit board connected to the light source board are arranged in the lamp body, and a concave trumpet-shaped heat dissipation channel is arranged on the bottom surface of the lamp housing;

[0005] A through hole communicating with the inner cavity of the lamp housing is provided on the side wall of the trumpet-shaped heat dissipation channel;

[0006] A plurality of slots are fixed at the connection between the lamp housing and the lamp body;

[0007] The light source board is fitted on the side wall of the trumpet-shaped heat dissipation channel, a reflector is fixed inside the lamp housing, a light guide is fixed on the bottom of the reflector, and the lamp beads of the light source board are located on the side of the light guide;

[0008] A cooling fan is fixed on the top of the trumpet-shaped cooling channel;

[0009] The slots, the heat dissipation fan and the trumpet-shaped heat dissipation channel form an air circulation channel.

[0010] Further preferably, a buckle is provided at the through hole, and the light source board is fixed to the side wall of the trumpet-shaped heat dissipation channel by the buckle.

[0011] It is further preferred that: a plurality of heat dissipation ribs are arranged on the outer wall of the lamp body.

[0012] Further preferably, a clamping hole is provided on the trumpet-shaped heat dissipation channel, and a clamping protrusion is fixed on the lamp housing;

[0013] The locking protrusion of the lamp housing is locked into the locking hole for positioning.

[0014] It is further preferred that: the slot hole comprises an n-shaped slot portion and a U-shaped slot portion;

[0015] The n-shaped groove portion is arranged at the bottom edge of the lamp body;

[0016] The U-shaped groove is arranged at the top edge of the lamp housing;

[0017] When the lamp body and the lamp housing are combined, the n-shaped groove portion and the U-shaped groove portion are combined into a complete groove hole.

[0018] Further preferably, the lamp housing is an acrylic housing or a light-transmitting plastic housing.

[0019] The utility model has positive effects: the structure of the utility model is reasonably arranged, a trumpet-shaped heat dissipation channel is arranged in the lamp housing, and a heat dissipation fan is cooperated, and the light source board is attached to the side wall of the trumpet-shaped heat dissipation channel, and a reflector and a light guide plate are cooperated, so that the light of the light source board can be guided by the light guide plate and irradiated downward through the reflector, which not only ensures the uniformity of the irradiated light, but also an air circulation channel can be formed by the heat dissipation fan, the slot hole and the trumpet-shaped heat dissipation channel, which can take away the heat of the light source board and the heat of the driving circuit board, which is beneficial to improving the heat dissipation performance, thereby increasing the service life of the driving circuit board and the light source board, and has strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the specific structure of the lamp housing in the utility model;

[0023] Figure 3 for Figure 1 Enlarged structural diagram at A in the middle.

[0024] Figure numerals: lamp body 1, lamp housing 2, light source board 3, driving circuit board 4, trumpet-shaped heat dissipation channel 5, through hole 6, slot hole 7, n-shaped slot portion 71, U-shaped slot portion 72, reflector 8, light guide plate 9, heat dissipation fan 10, buckle 11, heat dissipation rib 12, card hole 13, card position protrusion 14. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example

[0027] See Figures 1 to 3 As shown, a heat dissipation type LED bulb includes a lamp body 1 and a lamp housing 2, wherein a light source board 3 and a driving circuit board 4 connected to the light source board are arranged in the lamp body, and a concave trumpet-shaped heat dissipation channel 5 is arranged on the bottom surface of the lamp housing; in this embodiment, the lamp body is a plastic structure, which is a conventional structure in the prior art, and a lamp holder can be arranged thereon, and the lamp housing is an acrylic housing or a light-transmitting plastic housing. And the trumpet-shaped heat dissipation channel is formed as a whole with the lamp housing.

[0028] At the same time, in actual application, a through hole 6 connected to the inner cavity of the lamp housing is provided on the side wall of the trumpet-shaped heat dissipation channel; during installation, the light source board is attached to the side wall of the trumpet-shaped heat dissipation channel, so that the heat of the light source board can enter the trumpet-shaped heat dissipation channel from the through hole, and a plurality of slots 7 are fixed at the connection between the lamp housing and the lamp body; during installation, the light source board is fitted on the side wall of the trumpet-shaped heat dissipation channel, a reflector 8 is fixed inside the lamp housing, a light guide plate 9 is fixed on the bottom surface of the reflector, and the lamp beads of the light source board are on the side of the light guide plate; through the reflector and the light guide plate, the light of the light source board can be guided outward from the light guide plate, which can not only ensure the uniformity of the lighting, but also ensure the effectiveness of the lighting.

[0029] In actual application, a cooling fan 10 is fixed on the top of the trumpet-shaped heat dissipation channel; in this example, the cooling fan is a small fan, and it is electrically connected to the driving circuit board, and is driven and controlled by the driving circuit board. It is a conventional structure of the prior art and is simply applied. At the same time, the slot hole, the cooling fan and the trumpet-shaped heat dissipation channel form an air circulation channel. When the cooling fan is started, air enters from the slot hole, passes through the cooling fan, and then blows out from the trumpet-shaped heat dissipation channel, and the heat of the light source board enters the trumpet-shaped heat dissipation channel from the through hole to achieve heat dissipation.

[0030] In this embodiment, a buckle 11 is provided at the through hole, and the light source board is fixed on the side wall of the trumpet-shaped heat dissipation channel by the buckle. The above structure can improve the installation convenience and stable installation reliability of the light source board.

[0031] In actual application, a plurality of heat dissipation ribs 12 are provided on the outer wall of the lamp body to dissipate heat.

[0032] The trumpet-shaped heat dissipation channel is provided with a clamping hole 13, and the lamp housing is fixed with a clamping protrusion 14; the clamping protrusion of the lamp housing is clamped into the clamping hole for positioning, thereby improving the convenience of installation and the stability and reliability of installation.

[0033] At the same time, in actual application, the slot 7 includes an n-shaped slot portion 71 and a U-shaped slot portion 72; and during processing, the n-shaped slot portion is arranged at the bottom edge of the lamp body; the U-shaped slot portion is arranged at the top edge of the lamp shell; when the lamp body and the lamp shell are combined, the n-shaped slot portion and the U-shaped slot portion are combined into a complete slot hole.

[0034] The utility model has positive effects: the structure of the utility model is reasonably arranged, a trumpet-shaped heat dissipation channel is arranged in the lamp housing, and a heat dissipation fan is cooperated, and the light source board is attached to the side wall of the trumpet-shaped heat dissipation channel, and a reflector and a light guide plate are cooperated, so that the light of the light source board can be guided by the light guide plate and irradiated downward through the reflector, which not only ensures the uniformity of the irradiated light, but also an air circulation channel can be formed by the heat dissipation fan, the slot hole and the trumpet-shaped heat dissipation channel, which can take away the heat of the light source board and the heat of the driving circuit board, which is beneficial to improving the heat dissipation performance, thereby increasing the service life of the driving circuit board and the light source board, and has strong applicability and good practicality.

[0035] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. A heat dissipation LED bulb, comprising a lamp body and a lamp housing, wherein the lamp body is provided with a light source board and a driving circuit board connected to the light source board, characterized in that: The bottom surface of the lamp housing is provided with a concave trumpet-shaped heat dissipation channel; A through hole communicating with the inner cavity of the lamp housing is provided on the side wall of the trumpet-shaped heat dissipation channel; A plurality of slots are fixed at the connection between the lamp housing and the lamp body; The light source board is fitted on the side wall of the trumpet-shaped heat dissipation channel, a reflector is fixed inside the lamp housing, a light guide is fixed on the bottom of the reflector, and the lamp beads of the light source board are located on the side of the light guide; A cooling fan is fixed on the top of the trumpet-shaped cooling channel; The slots, the heat dissipation fan and the trumpet-shaped heat dissipation channel form an air circulation channel.

2. The heat dissipation LED bulb according to claim 1, characterized in that: Buckles are provided at the through holes, and the light source board is fixed on the side wall of the trumpet-shaped heat dissipation channel by the buckles.

3. The heat dissipation LED bulb according to claim 2, characterized in that: A plurality of heat dissipation ribs are arranged on the outer wall of the lamp body.

4. The heat dissipation LED bulb according to claim 3, characterized in that: The trumpet-shaped heat dissipation channel is provided with a clamping hole, and the lamp housing is fixed with a clamping protrusion; The locking protrusion of the lamp housing is locked into the locking hole for positioning.

5. The heat dissipation LED bulb according to claim 4, characterized in that: The slot hole comprises an n-shaped slot portion and a U-shaped slot portion; The n-shaped groove portion is arranged at the bottom edge of the lamp body; The U-shaped groove is arranged at the top edge of the lamp housing; When the lamp body and the lamp housing are combined, the n-shaped groove portion and the U-shaped groove portion are combined into a complete groove hole.

6. The heat dissipation LED bulb according to claim 1, characterized in that: The lamp housing is an acrylic housing or a light-transmitting plastic housing.

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