Air-cooled heat dissipation type fish gathering lamp

Abstract

The utility model relates to the technical field of lighting, in particular to an air-cooled heat dissipation type fish gathering lamp which comprises a lamp body connector, a light-transmitting shell and a heat exchanger with a hollow inner cavity structure, the lamp body connector is connected with the top of the light-transmitting shell in a sealed mode, and the heat exchanger is relatively and fixedly arranged in the light-transmitting shell. The non-light-emitting heat dissipation area is located at the lower end of the heat exchanger, the air return area is located at the upper end of the heat exchanger, the light-emitting heat dissipation area is located on the outer side of the heat exchanger, and all the areas communicate with an inner cavity of the heat exchanger. LED lamp panels electrically connected with the lamp body connector are arranged on the outer side of the heat exchanger in the circumferential direction, and a convection fan electrically connected with the lamp body connector is fixed to the lower end of the heat exchanger. According to the utility model, the heat dissipation efficiency of the fish lamp is effectively improved by forming circulating air flow in the fish gathering lamp, so that the fish gathering lamp can be used as an underwater lamp and an overwater lamp when the LED lamp is used as a light source.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to an air-cooled heat dissipation type fish attracting lamp. Background Art

[0002] The fish attracting lamp is the most important fishing aid equipment in the light-induced squid fishing operation. It can not only attract deep-layer squids to shallower water layers for operation at night, but also gather large squids in deeper water layers for capture during the day. The traditional fish attracting lamp uses 1000W metal halide lamps of Osram and Philips. In order to obtain the maximum brightness of the fish attracting lamp under the condition of energy conservation, high-power LED lamps have gradually emerged as alternative light sources in the market. While generating a huge light source, such fish attracting lamps generate a large amount of heat at the same time. In order to effectively dissipate the heat of the fish attracting lamp and prevent the electronic components inside the lamp from being damaged due to high temperature, Chinese Patent CN216492887U discloses a fish attracting lamp with convenient heat dissipation for LED, which includes a light-transmitting outer shell and a heat dissipation cylinder installed inside the light-transmitting outer shell. An LED lamp board is installed on the outer side of the heat dissipation cylinder, and both ends of the light-transmitting outer shell and the heat dissipation cylinder are fixedly connected through upper and lower bases; a heat dissipation channel through which water flow can pass is formed in the middle of the fish attracting lamp by the heat dissipation cylinder, and the heat generated when the LED lamp board works is transmitted to the water flow through the heat dissipation cylinder, and then the heat is released into the working water area around the fish attracting lamp.

[0003] However, the above fish attracting lamp has its own limitations. Firstly, since its connector uses a separate waterproof cable connector, it cannot be adapted to the traditional metal halide lamp socket and requires a large amount of modification, resulting in a high modification cost; secondly, when it is used in the air, since the heat capacity of air is much lower than that of seawater, the heat that can be carried away by air in the narrow heat dissipation channel is reduced by several times, resulting in the situation that the LED lamps of the fish attracting lamp that could normally dissipate heat in seawater will age rapidly in the air, reducing the service life. Therefore, when operating in complex sea areas, traditional metal halide lamps still need to be used as water lamps. Content of the Utility Model

[0004] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides an air-cooled heat dissipation type fish attracting lamp, which can replace the traditional metal halide lamp without modification, and effectively improve the heat dissipation efficiency of the fish lamp and the service life of the LED lamp board by forming a circulating air flow inside the fish attracting lamp, so that when it uses an LED lamp as the light source, it can be used as both an underwater lamp and a water lamp.

[0005] The technical solution of the present utility model is as follows: An air-cooled heat dissipation type fish attracting lamp, which includes a lamp body joint, a light-transmitting housing, and a heat exchanger with a hollow inner cavity structure. The lamp body joint is hermetically connected to the top of the light-transmitting housing. The heat exchanger is relatively fixedly arranged inside the light-transmitting housing, and divides the internal space of the light-transmitting housing into a non-light-emitting heat dissipation area at the lower end of the heat exchanger, a return air area at the upper end of the heat exchanger, and a light-emitting heat dissipation area outside the heat exchanger. Each area communicates with the inner cavity of the heat exchanger. An LED lamp board electrically connected to the lamp body joint is circumferentially arranged outside the heat exchanger, and a convection fan electrically connected to the lamp body joint is fixed at the lower end of the heat exchanger. A heat exchanger is arranged in the internal space formed by the light-transmitting housing and the lamp body joint, and the heat exchanger divides the internal space into a non-light-emitting heat dissipation area, a light-emitting heat dissipation area, and a return air area that communicate with the inner cavity of the heat exchanger. Driven by the convection fan, airflows with opposite temperature distribution trends are respectively formed on the inner wall and the outer wall of the heat exchanger, and the up and down temperatures of the LED lamp board installed outside the heat exchanger are made consistent by offsetting each other's internal and external temperature distributions, avoiding local overheating of the LED lamp board, thereby improving the service life of the LED lamp board. At the same time, the convection fan extracts the heat generated by the LED lamp board and gathered on the inner wall of the heat exchanger and convects it to the inner surface of the light-transmitting housing, and then conducts heat to the outside through the large-area light-transmitting housing, achieving the purpose of improving the heat dissipation efficiency.

[0006] The air outlet direction of the convection fan faces the bottom of the light-transmitting housing.

[0007] The air inlet side of the convection fan is hermetically connected to the lower end of the heat exchanger.

[0008] The light-transmitting housing, the heat exchanger, and the convection fan are coaxially arranged.

[0009] The light-transmitting housing and the heat exchanger are made of heat-conducting materials.

[0010] The heat exchanger is a multi-faceted aluminum tube, and the LED lamp board is an LED aluminum-based lamp board. Using aluminum ensures better conduction of the heat generated by the LED lamp board to the inner cavity of the heat exchanger for air circulation.

[0011] The light-transmitting housing includes a round tube and a base. The round tube is made of high borosilicate glass. The upper end of the cylindrical part is hermetically sealed with the lamp body joint, and the lower end of the cylindrical part is hermetically sealed with the base.

[0012] The lower end of the heat exchanger is fixedly connected to the bottom of the light-transmitting housing through a bracket, and the bracket is a frame structure that does not block the airflow.

[0013] The ratio of the height of the non-light-emitting heat dissipation area to the length of the heat exchanger is 1 / 4 to 1 / 2.

[0014] The product of the height of the return air area and the outer wall circumference of the heat exchanger is not less than the inner cavity cross-sectional area of the heat exchanger.

[0015] The beneficial effects of the present utility model are as follows: In this solution, a heat exchanger is arranged in the internal space formed by the light-transmitting housing and the lamp body connector, and the heat exchanger divides the internal space into a non-luminous heat dissipation area, a luminous heat dissipation area, and a return air area that communicate with the inner cavity of the heat exchanger. Driven by the convection fan, airflows with opposite temperature distribution trends are respectively formed on the inner wall and the outer wall of the heat exchanger. By offsetting each other's internal and external temperature distributions, the upper and lower temperatures of the LED lamp board installed outside the heat exchanger are made consistent, avoiding local overheating of the LED lamp board, thereby improving the service life of the LED lamp board. At the same time, the convection fan extracts the heat generated by the LED lamp board and accumulated on the inner wall of the heat exchanger and convects it to the inner surface of the light-transmitting housing, and then conducts heat to the outside through the large-area light-transmitting housing, achieving the purpose of improving the heat dissipation efficiency, so as to be used normally in both the underwater lamp and the above-water lamp modes. Description of the Drawings

[0016] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this specification. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is an airflow distribution diagram in the working state of the present utility model;

[0019] Figure 3 is a schematic cross-sectional view of the present utility model.

[0020] Reference numerals: 1. Lamp body connector; 101. Lamp head; 102. Upper cover; 2. Light-transmitting housing; 201. Round tube; 202. Base; 203. Luminous heat dissipation area; 204. Non-luminous heat dissipation area; 205. Return air area; 3. Heat exchanger; 4. LED lamp board; 5. Convection fan; 6. Bracket; 7. Support column; 8. Fixed seat; 9. Connector PCB. Detailed Embodiments

[0021] To enable those skilled in the art to better understand the technical solutions in the present utility model, the following combines the drawings to clearly and completely describe the technical solutions in the present utility model. Other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figure 1 andFigure 3 As shown in the figure, the present utility model provides an air-cooled heat dissipation type fish attracting lamp, which includes a lamp body connector 1, a light-transmitting housing 2 and a heat exchanger 3. In this embodiment, the lamp body connector 1 includes a lamp head 101 and an upper cover 102 fixed below the lamp head 101. The lamp head 101 adopts an E40 lamp head which is the same as the metal halide lamp commonly used in the current fishing boat industry, so as to directly replace the metal halide lamp without increasing the modification cost. The upper cover 102 of the lamp body connector 1 is hermetically connected to the top of the light-transmitting housing 2 to form a closed space inside the light-transmitting housing 2. Specifically, the light-transmitting housing 2 includes a circular tube 201 and a base 202. Threaded portions can be formed at the upper and lower ends of the circular tube 201 and are respectively thread-sealed with the upper cover 102 and the base 202. In order to further ensure the waterproofness, a silicone waterproof ring can be added at the thread-sealing part; in other embodiments, the formed thread structure can also be cancelled and the sealing connection can be directly carried out by means of glue sealing.

[0023] The heat exchanger 3 is located in the closed space and is fixedly arranged relative to the light-transmitting housing 2. An LED lamp board 4 is arranged circumferentially along the outer side of the heat exchanger 3. A convection fan 5 is fixed at the lower end of the heat exchanger 3. To ensure the power supply safety, a connector PCB 9 is also arranged in the lamp body connector 1. The connector PCB 9 is installed on the inner side of the upper cover 102. The input end of the connector PCB 9 is electrically connected to the lamp head 101, and the output end of the connector PCB is respectively electrically connected to the LED lamp board 4 and the convection fan 5, and is used to convert the external DC power supply into a low-voltage convection fan 5 for power supply through DC-DC conversion. The voltage of the convection fan 5 can adopt a DC fan of 5V, 12V or 24V. In this embodiment, a 12V DC fan is adopted; and it is used to shunt the DC input of the lamp head 101 to a plurality of parallel LED lamp boards 4. At the same time, 12 lamp beads are connected in series on each LED lamp board 4, and the conduction voltage of each lamp bead is 2.8V - 3.1V. At this time, the conduction voltage of each LED lamp board 4 is below 36V, so as to ensure that the inside of the fish attracting lamp and the conductive parts of the connector are in an absolutely safe low voltage ELSV.

[0024] The heat exchanger 3 has a hollow inner cavity structure. The closed space inside the light-transmitting housing 2 is divided by the heat exchanger 3 into a non-light-emitting heat dissipation area 204 located at the lower end of the heat exchanger 3, a return air area 205 located at the upper end of the heat exchanger 3, and a light-emitting heat dissipation area 203 located outside the heat exchanger 3, and each area communicates with the inner cavity of the heat exchanger 3; driven by the convection fan 5, a circulating air flow is formed starting from the air outlet of the convection fan 5 and ending at the air inlet of the convection fan 5, as Figure 2As shown in the figure, the above-mentioned circulating air flow is divided into five parts, namely, the A-direction air flow blown from the convection fan 5 to the non-light-emitting heat dissipation area 204, the B-direction air flow rising along the bottom of the light-transmitting housing 2 with heat dissipation and temperature reduction by adhering to the wall, the C-direction air flow rising by absorbing heat on the light-emitting side of the LED lamp board 4, the D-direction air flow turning along the top of the light-transmitting housing 2 by adhering to the wall, and the E-direction air flow absorbing heat on the backlight side of the LED lamp board 4 and sucking towards the convection fan 5. As the light-emitting heat source of the LED lamp board, part of the heat generated by it is dissipated to the outside of the light-transmitting housing 2 corresponding to the light-emitting heat dissipation area 203 through thermal radiation, and part of it is transferred to the inner cavity of the heat exchanger 3 through the heat conduction of the heat exchanger 3. Driven by the convection fan 5, heat convection is formed and acts on the light-transmitting housing 2 corresponding to the non-light-emitting heat dissipation area 204 and the light-emitting heat dissipation area 203 respectively, and heat dissipation is carried out through heat conduction between the light-transmitting housing 2 and the outside. Compared with the prior art of dissipating heat through a narrow heat dissipation cylinder, the large-area light-transmitting housing 2 effectively improves the heat dissipation efficiency. At the same time, by utilizing the characteristics that the E-direction air flow and the C-direction air flow formed on the inner and outer sides of the heat exchanger corresponding to the back side and the front light-emitting side of the LED lamp board 4 have opposite temperature distribution gradients, after the temperature gradients of the air on both sides offset each other's internal and external temperature differences, the upper and lower temperatures of the LED lamp board 4 naturally become consistent. In the prior art, there is only a hot air flow rising due to the action of thermal buoyancy inside the fish-aggregating lamp, and the hot air flow gathering at the top of the LED lamp board 4 will cause local overheating of the LED lamp board. When the present application reaches thermal equilibrium, the temperature of the solder joints of the LED lamp beads above and below the LED lamp board is within ±2°C, thereby effectively improving the service life of the LED lamp board 4.

[0025] Further preferably, the air outlet direction of the convection fan 5 faces the bottom of the light-transmitting housing 2, and the air of the LED back-side heat source absorbed by heat conduction in the heat exchanger 3 is pumped out and blown into the space of the non-light-emitting heat dissipation area 204, realizing partial transfer of the heat inside the fish-aggregating lamp. By increasing the temperature of the air in the non-light-emitting heat dissipation area 204, the purpose of reducing the temperature of the air in the light-emitting heat dissipation area 203 is achieved, thereby indirectly reducing the temperature of the LED lamp board 4 in the light-emitting heat dissipation area 203. At the same time, in order to ensure the suction effect of the convection fan 5 on the inner cavity of the heat exchanger and avoid generating a second circulating air flow between the heat exchanger 3 and the convection fan 5, reducing the heat flow of the hot air in the heat exchanger 3 entering the non-light-emitting heat dissipation area 204, the air inlet side of the convection fan 5 is hermetically connected to the lower end of the heat exchanger 3. In this embodiment, the convection fan 5 is bolted to the lower end of the heat exchanger 3 and then sealed by adding a sealing gasket. In other embodiments, an adhesive sealing method is also used.

[0026] In order to make the gap between the heat exchanger 3 and the light-transmitting housing 2 uniform and the air flow flow evenly between each area, so as to quickly reach the thermal equilibrium state inside the entire fish-aggregating lamp, the light-transmitting housing 2, the heat exchanger 3 and the convection fan 5 are coaxially arranged.

[0027] The light-transmitting housing 2 and the heat exchanger 3 are made of heat-conductive materials to enhance the heat dissipation performance of the entire fish-aggregating lamp. Specifically, the round tube 201 is made of high borosilicate glass, the heat exchanger 3 is a multi-faceted aluminum tube, and the LED lamp board 4 is an LED aluminum-based lamp board. In order to enable the air flow to circulate fully within the light-transmitting housing 2 and make the most of the light-transmitting housing 2 for heat exchange, the high borosilicate glass round tube 201 has a consistent cross-sectional diameter from top to bottom. Further preferably, the thermal conductivity of the high borosilicate glass is between 1 - 1.5 W / (m·K), and the visible light transmittance is approximately 90% - 94%.

[0028] The product of the height L3 of the air return area 205 and the outer wall circumference of the heat exchanger 3 is not less than the inner cavity cross-sectional area of the heat exchanger 3, so as to ensure that the air flow within the air return area 205 can fully flow back into the inner cavity of the heat exchanger 3 and ensure the convection effect during the circulation of the entire circulating air flow. Specifically, the height L3 of the air return area 205 is the distance from the upper end of the heat exchanger 3 to the joint PCB 9.

[0029] As Figure 1 and Figure 3 shown, in order to improve the stability of the fish-aggregating lamp when used on a fishing boat and prevent it from breaking due to swinging and collision, a fixing seat 8 is formed below the base 202. At least one fixing structure such as a connecting hole, a hook shape, a groove, etc. is circumferentially formed on the outer side of the fixing seat 8. The fish-aggregating lamp is effectively fixed by passing a cable on the fishing boat through the above-mentioned fixing structure.

[0030] As Figure 3As shown in the figure, to ensure the stability of the heat exchanger 3 within the light-transmitting housing 2, the lower end of the heat exchanger 3 is fixedly connected to the bottom of the light-transmitting housing 2 via a support 6. The support 6 is a framework structure that allows unobstructed air flow through. In one embodiment, the support 6 may be composed of multiple vertical support rods arranged circumferentially around the lower end of the heat exchanger 3. One end of each support rod is fixed to the base 202 by bolts, and the other end is fixed to the lower end of the heat exchanger 3 by bolts or welding. In other embodiments, for the convenience of installing the heat exchanger 3, the support 6 is an elastic support member. At this time, a support column 7 that is inserted into the inner joint PCB 9 of the lamp body joint 1 is also fixed to the upper end of the heat exchanger 3. There are four support columns 7 in total. One end of each support column is fixed to the four corners of the upper end of the heat exchanger 3 by bolts respectively, and the other end is inserted into the joint PCB 9 to support the upper end of the heat exchanger 3 without disturbing the air flow in the return air area 205. The elastic support member is a U-shaped stamping part with a certain elasticity. The open end of the U-shaped stamping part is installed at the lower end of the heat exchanger 3 or the convection fan 5 by welding, bolts, or a clamping structure formed at the open position. The closed end of the U-shaped stamping part abuts against the base 202. During the installation process, the U-shaped stamping part undergoes elastic deformation under pressure, and its two sides expand outward and abut against the inner wall of the light-transmitting housing 2, thereby fixing the heat exchanger 3 within the light-transmitting housing 2. Preferably, a positioning groove that mates with the closed end of the U-shaped stamping part is formed on the base 202 to position the U-shaped stamping part. Of course, positioning can also be achieved by forming a positioning post and a positioning hole at the centers of the base 202 and the closed end of the U-shaped stamping part respectively.

[0031] Due to the limitations of the size of traditional 1000W metal halide lamps (the length of the lamp body joint is 4 cm, the length of the glass tube is 35 cm, and the diameter of the glass tube is 8 cm), in order to effectively replace such metal halide lamps, the size of the fish-aggregating lamp in this application needs to be designed within the above size range. For example, when designing a 90W to 150W fish-aggregating lamp for heat dissipation, the selected round tube 201 is a high borosilicate glass tube with an outer diameter of 8 ± 1 cm, a thickness of 2 ± 0.5 mm, and a length of 35 ± 2 cm. When designing an 180W to 300W fish-aggregating lamp, the selected round tube 201 is a high borosilicate glass tube with an outer diameter of 11 ± 2 cm, a thickness of 2 ± 0.5 mm, and a length of 36 ± 4 cm.

[0032] Under this design condition, it is crucial to adjust the ratio of the height of the non-luminous heat dissipation area 204 to the length of the heat exchanger 3. If the above ratio is too small, it means that the heat exchanger 3 is too long, resulting in increased weight, and the height of the non-luminous heat dissipation area 204 is too short. The heat concentratedly conducted from the LED lamp board 4 to the inside of the heat exchanger 3 is then blown by the convection fan 5 towards the insufficient heat dissipation area within the non-luminous heat dissipation area 204, unable to fully transfer the heat flow, thereby causing the temperature in the luminous heat dissipation area 203 to rise, and the temperature of the LED lamp board 4 will also increase. Conversely, if the above ratio is too large, it means that the length of the heat exchanger 3 is too short. At this time, the wattage of the LED lamp beads 4 is concentrated in the relatively short luminous heat dissipation area 203, resulting in an increase in the heat density of the LED lamp beads, that is, the temperature of the LED lamp board 4 rises. Thus, it is set that the ratio of the height L1 of the non-luminous heat dissipation area 204 to the length L2 of the heat exchanger 3 is 1 / 4 to 1 / 2. When the LED lamp board 4 is lit at full wattage under the condition of no wind at an external environment temperature of 25°C, the temperature of all LED lamp solder joints is within the required range (since the L85 (the time required for the luminous flux to decay to 85% of the original) of the LED lamp beads is 50,000 hours at a temperature below 100°C, the design target for the temperature of the LED lamp bead solder joints in this application is 90°C). At the same time, for the convection fan 5, considering economy, a vehicle-grade convection fan with a temperature resistance of 85°C is selected. The design target of this application is that the temperature at the convection fan is 80°C under the condition of no wind outside.

[0033] The experimental process is as follows: A fish-aggregating lamp is made using a high borosilicate glass tube with a diameter of 8 cm, a wall thickness of 2 mm, and a length of 35 cm. The height of the non-luminous heat dissipation area 204 is two-fifths of the length of the heat exchanger 3. Tests are conducted under the condition of no wind at room temperature of 26 - 28°C. The relevant thermocouples for testing are attached at the following positions: ① The inner and outer sides of the uppermost part of the circular tube luminous heat dissipation area 203; ② The inner and outer sides of the lowermost part of the circular tube non-luminous heat dissipation area 204; ③ The upper surface of the convection fan 5; ④ The solder joints of the uppermost LED lamp beads on the LED lamp board 4 on the heat exchanger 3; ⑤ The solder joints of the lowermost LED lamp beads on the LED lamp board 4 on the heat exchanger 3; ⑥ Inside the external environment; The data obtained is as follows in the table:

[0034]

[0035] After about one hour of thermal equilibrium, the temperature of the solder joints of the uppermost LED lamp beads is 88.06°C, and the temperature of the solder joints of the lowermost LED lamp beads is 88.91°C. The temperature difference between the solder joints of the uppermost and lowermost LED lamp beads is only 0.85°C. The temperature on the upper surface of the convection fan 5 is 76.28°C, all within the design targets. When the above ratio is reduced to one-fourth or increased to one-half, it can still meet the above design targets. However, when the ratio is less than one-fourth or greater than one-half, the temperature of the LED lamp bead solder joints will rise beyond the set targets. When this fish-aggregating lamp is working, such asFigure 2 As shown, the principle of the internal heat dissipation process is as follows: The LED lamp board 4 serves as the heat source of the light-emitting body. A part of the heat generated by it is dissipated to the outside of the light-transmitting housing 2 corresponding to the light-emitting heat dissipation area 203 through thermal radiation, and a part is conducted to the inner cavity of the heat exchanger 3 through the heat-conducting materials of the LED lamp board 4 and the heat exchanger 3. While the convection fan 5 extracts the air inside the heat exchanger 3, the air at the return air area 205 at the upper end of the heat exchanger 3 is drawn into the heat exchanger 3 (D-direction air flow). During the process of the air flowing downward inside the heat exchanger 3 (E-direction air flow), it absorbs the heat generated by the LED conducted to the inner side of the heat exchanger 3. The air gradually absorbs heat and warms up during the downward flow from top to bottom. The lower end of the inner side of the heat exchanger 3 is the position with the highest air temperature inside the heat exchanger 3. The hot air is blown downward by the convection fan 5 to the bottom of the non-light-emitting heat dissipation area 204 (A-direction air flow). Therefore, the air temperature at the bottom of the non-light-emitting heat dissipation area 204 is close to the highest air temperature inside the heat exchanger 3. Under the action of convection, the heat is transferred to the inner wall of the circular tube 201 corresponding to the non-light-emitting heat dissipation area 204 (B-direction air flow), conducted through heat to the outside of the light-transmitting housing, and the heat is carried away by the convection of the external ambient air. And the B-direction air flow gradually cools down during the upward movement; the air continues to rise into the light-emitting heat dissipation area 203 (C-direction air flow). Under the action of convection, the heat is transferred to the inner wall of the circular tube 201 corresponding to the light-emitting heat dissipation area 203, conducted through heat to the outside of the light-transmitting housing, and the heat is carried away by the convection of the external ambient air. Therefore, in the light-emitting heat dissipation area, there are two heat dissipation paths, and in the non-light-emitting heat dissipation area, there is one heat dissipation path. This is also the reason why the temperature difference above the circular tube is greater than the temperature difference below the circular tube; during the upward movement of the C-direction air flow, the air will gradually absorb the heat generated by the LED. The upper end of the outside of the heat exchanger 3 is the position with the highest air temperature outside the heat exchanger 3. At the same time, the heating directions of the air temperature distributions inside and outside the heat exchanger 3 are exactly opposite. The circulating air flow formed by the convection fan 5 enables the opposite air temperature distributions inside and outside the heat exchanger 3 to cancel each other out, keeping the temperature difference between the LED solder joints above and below the LED lamp board 4 within 2°C; thus ensuring the service life of the fish-aggregating lamp, so that when it uses an LED lamp as the light source, it can be used as both an underwater lamp and an above-water lamp.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The above are only the specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. An air-cooled heat dissipation type fish attracting lamp, characterized in that, It includes a lamp body connector, a light-transmitting housing, and a heat exchanger with a hollow inner cavity structure. The lamp body connector is hermetically connected to the top of the light-transmitting housing. The heat exchanger is relatively fixedly arranged inside the light-transmitting housing, and divides the internal space of the light-transmitting housing into a non-light-emitting heat dissipation area at the lower end of the heat exchanger, a return air area at the upper end of the heat exchanger, and a light-emitting heat dissipation area outside the heat exchanger. Each area communicates with the inner cavity of the heat exchanger; an LED lamp board electrically connected to the lamp body connector is arranged circumferentially outside the heat exchanger, and a convection fan electrically connected to the lamp body connector is fixed at the lower end of the heat exchanger.

2. The air-cooled heat dissipation type fish attracting lamp according to claim 1, characterized in that, The air outlet direction of the convection fan faces the bottom of the light-transmitting housing.

3. The air-cooled heat dissipation type fish attracting lamp according to claim 1 or 2, characterized in that, The air inlet side of the convection fan is hermetically connected to the lower end of the heat exchanger.

4. The air-cooled heat dissipation type fish attracting lamp according to claim 2, wherein The light-transmitting housing, the heat exchanger, and the convection fan are coaxially arranged.

5. An air-cooled fish-aggregating lamp according to claim 1 or 2 or 4, characterized in that, The light-transmitting housing and the heat exchanger are made of heat-conducting materials.

6. The air-cooled heat dissipation type fish attracting lamp according to claim 5, wherein, The heat exchanger is a multi-faceted aluminum tube, and the LED lamp board is an LED aluminum-based lamp board.

7. The air-cooled heat dissipation type fish attracting lamp according to claim 5, characterized in that, The light-transmitting housing includes a round tube and a base. The round tube is made of high borosilicate glass. The upper end of the cylindrical part is hermetically sealed with the lamp body connector, and the lower end of the cylindrical part is hermetically sealed with the base.

8. An air-cooled heat dissipation type fish attracting lamp according to claim 1 or 2 or 4 or 6 or 7, characterized in that, The lower end of the heat exchanger is fixedly connected to the bottom of the light-transmitting housing through a bracket, and the bracket is a frame structure that allows unobstructed air flow through.

9. The air-cooled heat dissipation type fish attracting lamp according to claim 1 or 2 or 4 or 6 or 7, characterized in that, The ratio of the height of the non-light-emitting heat dissipation area to the length of the heat exchanger is 1 / 4 to 1 / 2.

10. A fish-aggregating lamp with air-cooled heat dissipation according to claim 1 or 2 or 4 or 6 or 7, characterized in that, The product of the height of the return air area and the outer wall perimeter of the heat exchanger is not less than the cross-sectional area of the inner cavity of the heat exchanger.

Images