Projection lamp with honeycomb heat dissipation holes

Abstract

The utility model relates to the technical field of small projection lamps, in particular to a projection lamp with honeycomb heat dissipation holes. Comprising a lamp shell, a heat dissipation area is arranged on the rear portion of the lamp shell, a plurality of heat dissipation holes are formed in the heat dissipation area and form a honeycomb structure, the heat dissipation holes vertically penetrate through the rear portion of the lamp shell, and a waterproof connector is further arranged on the rear portion of the lamp shell. Due to the design of the three layers of heat dissipation holes, the structural strength of the heat dissipation position is guaranteed while the sufficient heat dissipation effect is provided, and the waterproof plug is protected from being damaged by external force. Compared with a fin type heat dissipation structure in the prior art, the design of the honeycomb-shaped heat dissipation holes ensures that the edge of the heat dissipation structure is smooth and safe.

Description

Technical Field

[0001] This utility model relates to the field of small floodlight technology, specifically to a floodlight with honeycomb heat dissipation holes. Background Technology

[0002] When a lamp is converted from electricity to light, some electrical energy is converted into light and some into heat. The finned heat dissipation structure of traditional lamp heat sinks has limited heat dissipation area and effect, and the single linear structure also lacks better structural strength and stability.

[0003] For example, the self-heating LED lamp disclosed in Chinese Patent Application Publication No. CN102563419A on July 11, 2012 includes an LED lamp core and a reflector. At least one external heat dissipation cover is fixed on the outside of the reflector. The shape of the external heat dissipation cover is similar to that of the reflector. The opening end of the external heat dissipation cover is a certain distance away from the opening end of the reflector. A convection hole is provided at the upper end of the external heat dissipation cover. The heat generated by the LED lamp core is transferred to the external heat dissipation cover. The external heat dissipation cover is made of thin aluminum plate. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is:

[0005] 1. A floodlight with a honeycomb heat dissipation design is provided, which uses a special heat dissipation hole design to enhance the heat dissipation effect and ensure the structural strength of the heat dissipation part of the light-transmitting lamp.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a floodlight with honeycomb heat dissipation holes, comprising a lamp housing, the rear of which is a heat dissipation area, the heat dissipation area being provided with a plurality of heat dissipation holes, the plurality of heat dissipation holes forming a honeycomb structure, the plurality of heat dissipation holes penetrating vertically through the rear of the lamp housing, and a waterproof connector being provided on the rear of the lamp housing.

[0007] In this design, the heat dissipation holes are located at the rear of the lamp housing, extending from top to bottom to increase the contact area between the rear heat dissipation area and the air. The honeycomb structure design makes the front and rear heat dissipation holes triangular, while the central heat dissipation hole is hexagonal. This honeycomb structure ensures both effective heat dissipation and structural strength at the rear of the lamp body.

[0008] Optionally, the heat dissipation holes are divided into a front heat dissipation hole group, a middle heat dissipation hole group, and a rear heat dissipation hole group. The heat dissipation holes in the front heat dissipation hole group are triangular, the heat dissipation holes in the middle heat dissipation hole group are hexagonal, and the heat dissipation holes in the rear heat dissipation hole group are triangular. The shape of the heat dissipation holes corresponds to the shape of the adjacent heat dissipation holes.

[0009] Optionally, the heat dissipation holes are wider at the top and bottom and narrower in the middle.

[0010] The structure of the heat dissipation holes, wider at the top and bottom and narrower in the middle, approximates the shape of a Venturi tube. When air flows through the narrow middle section, the reduced cross-sectional area leads to an increase in flow velocity. According to Bernoulli's equation, the increased flow velocity is accompanied by a decrease in static pressure, creating a local pressure gradient that propels the fluid through the constricted section. Whether the airflow is formed by the natural rise of heated air or by actively blowing air into the heat dissipation holes, the wide-top-bottom-narrow-middle design optimizes the gas flow velocity and improves heat dissipation efficiency.

[0011] Optionally, the middle of the heat dissipation hole is the parting zone.

[0012] When molding the honeycomb structure of the lamp housing heat sink, the middle position of the heat dissipation holes is used as the parting zone. The draft angle is calculated and designed to achieve a honeycomb heat dissipation channel with large space at both ends and narrow space in the middle. This allows the lamp housing and its rear heat dissipation holes to be integrally molded, eliminating the need to drill holes in the lamp housing. This results in lower processing costs and better structural strength for the integrally molded lamp housing.

[0013] Optionally, the waterproof connector is located at the lower part of the heat dissipation area.

[0014] The lower part of the heat dissipation area has mounting holes for the waterproof connector, which extend through the front, middle, and rear heat dissipation hole groups. The heat dissipation area covers the waterproof connector, which can reduce the impact of the external environment on the connection between the waterproof connector and the lamp housing.

[0015] The beneficial technical effects of this utility model are as follows: Utilizing a three-layer heat dissipation hole design, it provides sufficient heat dissipation while ensuring the structural strength of the heat dissipation area, protecting the waterproof plug from external damage. Compared to existing fin-type heat dissipation structures, the honeycomb-shaped heat dissipation hole design ensures smooth and safe edges of the heat dissipation structure. The design, narrow in the middle and wide at the top and bottom, places the parting line in the center, ensuring that the lamp body shell and heat dissipation area can be integrally injection molded, further guaranteeing the structural strength of the lamp body while maintaining lower costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the front side of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the rear side of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0020] Reference numerals: 1-Lens, 2-Lens bracket, 3-PCB lamp board, 4-Lamp housing, 5-Positioning groove, 6-Positioning buckle, 7-Fixing foot, 8-Fixing hole, 9-Screw, 10-Triangular positioning post, 11-Front heat dissipation hole group, 12-Middle heat dissipation hole group, 13-Rear heat dissipation hole group, 14-Waterproof plug. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] Reference Figure 1-4 As shown, a floodlight with a honeycomb heat dissipation design includes a lens 1, a lens bracket 2, a PCB lamp board 3, and a lamp housing 4. The length, width, and height of the lamp housing 4 are all less than 15cm.

[0023] Lens 1 is installed inside lens holder 2. Two positioning grooves 5 are provided on the outer edge of lens 1, and positioning buckles 6 corresponding to the positioning grooves 5 are provided on lens holder 2.

[0024] The lens bracket 2 extends from its outer edge toward the PCB lamp board 3 with at least two fixing feet 7. Each fixing foot 7 has a fixing hole 8 for screws 9 to pass through. The lens bracket 2 is fixed to the PCB lamp board 3 by two screws 9. The fixing holes 8 are equidistant from the center of the lens bracket 2. The two fixing holes 8 are located on opposite sides.

[0025] The PCB lamp board 3 is installed inside the lamp housing 4. Three triangular positioning posts 10 are provided on one end of the lens bracket 2 near the PCB lamp board 3. Positioning holes corresponding to the triangular positioning posts 10 are provided on the PCB lamp board 3. Positioning steps are provided at the ends of the triangular positioning posts 10. There are three triangular positioning posts 10, which are distributed at 120° intervals around the center of the lens bracket 2.

[0026] The front of the lamp housing 4 is used to mount the lens 1, lens bracket 2, and PCB lamp board 3. The rear is the heat dissipation area, which has fourteen heat dissipation holes. Several of these holes form a honeycomb structure and extend vertically through the rear of the lamp housing 4. A waterproof connector is also provided on the rear of the lamp housing 4. The waterproof connector is located at the bottom of the heat dissipation area.

[0027] The heat dissipation holes are divided into a front heat dissipation hole group 11, a middle heat dissipation hole group 12, and a rear heat dissipation hole group 13. The five heat dissipation holes in the front heat dissipation hole group 11 are triangular, the four heat dissipation holes in the middle heat dissipation hole group 12 are hexagonal, and the five heat dissipation holes in the rear heat dissipation hole group 13 are triangular. The shape of the hole wall of the heat dissipation hole corresponds to the shape of the hole wall of the adjacent heat dissipation hole.

[0028] The ventilation holes are wider at the top and bottom and narrower in the middle. The middle of the ventilation holes is the parting zone.

[0029] The structure of the heat dissipation holes, wider at the top and bottom and narrower in the middle, approximates the shape of a Venturi tube. When air flows through the narrow middle section, the reduced cross-sectional area leads to an increase in flow velocity. According to Bernoulli's equation, the increased flow velocity is accompanied by a decrease in static pressure, creating a local pressure gradient that propels the fluid through the constricted section. Whether the airflow is formed by the natural rise of heated air or by actively blowing air into the heat dissipation holes, the wide-top-bottom-narrow-middle design optimizes the gas flow velocity and improves heat dissipation efficiency.

[0030] This design utilizes a three-layer heat dissipation hole design to provide sufficient heat dissipation while ensuring the structural strength of the heat dissipation area and protecting the waterproof plug 14 from external damage. Compared to the fin-type heat dissipation structure in existing technologies, the honeycomb heat dissipation hole design ensures smooth and safe edges of the heat dissipation structure. The design, narrow in the middle and wide at the top and bottom, places the parting line in the center, ensuring that the lamp body shell can be integrally injection molded with the heat dissipation area, further ensuring the structural strength of the lamp body while maintaining a lower cost.

[0031] Based on the above structure, a specific experiment was conducted to test the heat dissipation effect, and the specific experimental data are shown in the table below (all data in the table are in °C):

[0032]

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A floodlight with honeycomb heat dissipation holes, characterized in that: The lamp housing includes a heat dissipation area at the rear, which has several heat dissipation holes forming a honeycomb structure. The heat dissipation holes extend vertically through the rear of the lamp housing, and a waterproof connector is also provided on the rear of the lamp housing.

2. A floodlight with honeycomb heat dissipation holes according to claim 1, characterized in that: The aforementioned heat dissipation holes are divided into a front heat dissipation hole group, a middle heat dissipation hole group, and a rear heat dissipation hole group. The heat dissipation holes in the front heat dissipation hole group are triangular, the heat dissipation holes in the middle heat dissipation hole group are hexagonal, and the heat dissipation holes in the rear heat dissipation hole group are triangular. The shape of the heat dissipation holes corresponds to the shape of the adjacent heat dissipation holes.

3. A floodlight with honeycomb heat dissipation holes according to claim 2, characterized in that: The heat dissipation holes are wider at the top and bottom and narrower in the middle.

4. A floodlight with honeycomb heat dissipation holes according to claim 3, characterized in that: The middle of the heat dissipation hole is the parting zone.

5. A floodlight with honeycomb heat dissipation holes according to claim 1, characterized in that, The waterproof connector is located at the lower part of the heat dissipation area.

Images