A lighting device

Abstract

The utility model belongs to lighting equipment technical field discloses a kind of lighting equipment, and lighting equipment includes cylinder shell and lighting piece, the first end of cylinder shell is equipped with lamp slot, cylinder shell inside has heat absorption cavity, heat absorption cavity is internally provided with heat absorber, lighting piece is located in lamp slot, and lighting piece includes substrate and lamp body on substrate, and substrate is fixedly connected with lamp slot.The utility model provides lighting equipment, when lighting piece works, lamp body emits light to generate heat and transmit heat to substrate, then by substrate, the inner wall between lamp slot and heat absorption cavity is transmitted to heat absorber in heat absorption cavity, heat absorber effectively absorbs heat generated by lamp body and transmitted to substrate, relieves the rapid temperature rise when lighting piece lamp body emits light, ensures that lighting equipment long-time reliable operation.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to a lighting device. Background Technology

[0002] A flashlight is a common handheld electronic lighting device. When high brightness is required, a high-powered flashlight is usually needed. The higher the wattage of the flashlight, the more heat it emits.

[0003] When a flashlight's heat dissipation cannot keep up with the heat generated by the lamp body, heat will accumulate throughout the flashlight, making it increasingly hot. For flashlights equipped with LED lamp bodies, as the crystallization temperature of the LEDs increases, their brightness will decrease, thus affecting the flashlight's ability to maintain high brightness for extended periods and impacting its reliability and stability during long-term use. Utility Model Content

[0004] The purpose of this invention is to provide a lighting device that can effectively absorb the heat generated by the light emitted by the lamp body, reduce the operating temperature of the flashlight, and ensure reliable operation over a long period of time.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A lighting device, comprising:

[0007] A cylindrical shell, the first end of which is provided with a lamp slot, and the interior of the cylindrical shell has a heat absorption cavity, the contents of which are filled with a heat absorber;

[0008] An illumination element is disposed within the lamp trough. The illumination element includes a substrate and a lamp body disposed on the substrate. The substrate is fixedly connected to the lamp trough.

[0009] The heat absorber is used to absorb the heat generated by the lamp body and transferred to the substrate.

[0010] Preferably, the outer wall of the cylindrical shell is provided with a first receiving groove, the substrate is fixedly disposed on the groove wall of the lamp groove facing the first receiving groove, the first receiving groove is covered with a first cover plate, and the first cover plate and the first receiving groove together form the heat absorption cavity.

[0011] Preferably, the outer wall of the cylindrical shell is provided with a first groove, the first receiving groove is provided at the bottom of the first groove, and the first cover plate is fixedly embedded in the first groove.

[0012] Preferably, a first sealing ring is provided between the first groove and the first cover plate.

[0013] Preferably, the bottom of the first groove is provided with an annular first fixing groove, and the first sealing ring is installed in the first fixing groove.

[0014] Preferably, an installation block is fixedly disposed inside the lamp groove, the substrate is fixedly disposed on the installation block, the installation block has a second receiving groove, the second receiving groove is covered by a second cover plate, and the second cover plate and the second receiving groove together form the heat absorption cavity.

[0015] Preferably, the outer side wall of the mounting block is provided with a second recess, the second receiving groove is provided at the bottom of the second recess, and the second cover plate is fixedly embedded in the second recess.

[0016] Preferably, a second sealing ring is provided between the second groove and the second cover plate.

[0017] Preferably, the bottom of the second groove is provided with an annular second fixing groove, and the second sealing ring is installed in the second fixing groove.

[0018] Preferably, the heat absorber is configured as a phase changer, and the specific heat capacity of the heat absorber is greater than that of the shell.

[0019] Beneficial effects:

[0020] The lighting device provided by this utility model generates heat when the lamp body emits light and transfers the heat to the substrate. The heat is then transferred from the substrate to the heat absorber in the heat absorber through the inner wall between the lamp slot and the heat absorber. The temperature of the heat absorber rises during the heat absorption process, effectively absorbing the heat generated by the lamp body and transferred to the substrate, alleviating the rapid temperature rise of the lamp body when it emits light, and ensuring that the lighting device can operate reliably for a long time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the lighting device provided by this utility model from one perspective;

[0022] Figure 2 This is a structural schematic diagram of the lighting device provided by this utility model from another perspective;

[0023] Figure 3 This is a partial structural cross-sectional view of the first end of a lighting device provided in an embodiment of this utility model;

[0024] Figure 4 This is a partial structural cross-sectional view of the first end of a lighting device provided in another embodiment of this utility model;

[0025] Figure 5 This is a partial structural cross-sectional view of the second end of the lighting device provided by this utility model.

[0026] In the picture:

[0027] 1. Shell; 101. Heat absorption chamber; 11. Lamp slot; 12. Heat absorber; 13. First receiving slot; 14. First cover plate; 15. First recessed groove; 151. First sealing ring; 152. First fixing groove; 16. Mounting groove; 17. PCB board; 171. USB port; 172. Soft pressing pad; 18. Dial wheel;

[0028] 2. Lighting components; 21. Substrate; 22. Lamp body;

[0029] 3. Mounting block; 31. Second receiving groove; 32. Second recessed groove; 321. Second fixing groove; 33. Second cover plate; 34. Second sealing ring;

[0030] 4. Tail cap; 41. Hard press head;

[0031] 5. Ring. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] This utility model provides a lighting device. (Refer to...) Figures 1 to 5 As shown, the lighting device includes a cylindrical shell 1 and a lighting element 2. The first end of the cylindrical shell 1 has a lamp groove 11, and the interior of the cylindrical shell 1 has a heat-absorbing cavity 101 containing a heat-absorbing body 12. The lighting element 2 is disposed within the lamp groove 11 and includes a substrate 21 and a lamp body 22 disposed on the substrate 21. The substrate 21 is fixedly connected to the lamp groove 11. The heat-absorbing body 12 absorbs the heat generated by the lamp body 22 and transferred to the substrate 21.

[0037] In this embodiment, when the lighting device is working, the lamp body 22 emits light and generates heat, which is then transferred to the substrate 21. The heat is then transferred from the substrate 21 to the heat absorber 12 in the heat absorber 101 through the inner wall between the lamp slot 11 and the heat absorption cavity 101. During the heat absorption process, the temperature of the heat absorber 12 increases, effectively absorbing the heat generated by the lamp body 22 and transferred to the substrate 21, thus alleviating the rapid temperature rise of the lamp body 22 when it emits light and ensuring that the lighting device can operate reliably for a long time.

[0038] For example, the lamp body 22 is configured as an LED lamp. The heat absorber 12 effectively absorbs the heat generated by the lamp body 22, reduces the degree of brightness decay of the LED, etc., and thus maintains the LED lamp at high brightness for a long time.

[0039] For example, the substrate 21 is made of copper to further facilitate heat transfer.

[0040] For example, the heat absorber 12 is configured as a phase changer, and the specific heat capacity of the heat absorber 12 is greater than that of the shell 1. Optionally, the heat absorber 12 can be a liquid in its initial state, and both the shell 1 and the substrate 21 are made of metal. The heat emitted by the LED lamp is transferred to the shell 1 through the substrate 21. Because the shell 1 has a high thermal conductivity, it can effectively transfer the heat it carries to the air through natural convection. The heat absorber 12 in the heat absorption cavity 101 is in contact with the shell 1, and the heat of the shell 1 is transferred to the heat absorber 12 at the same time. At the same time, the heat absorber 12 interacts with the shell 1 and transfers heat to each other. However, because the specific heat capacity of the heat absorber 12 is much greater than that of the shell 1, the heat absorber 12 also stores some heat when interacting with the shell 1, which improves the heat handling capacity of the entire system in a short time, reduces the overall temperature of the shell 1, and realizes the function of high power output of the product in a short time.

[0041] In some other alternative embodiments, the heat absorber 12 is initially solid and can change from solid to liquid during the heat absorption process.

[0042] In some alternative implementations, refer to Figure 3 As shown, a first receiving groove 13 is formed on the outer wall of the cylindrical shell 1. The base plate 21 is fixedly disposed on the groove wall of the lamp slot 11 facing the first receiving groove 13. A first cover plate 14 is provided on the outer cover of the first receiving groove 13. The first cover plate 14 and the first receiving groove 13 together form a heat absorption cavity 101. Specifically, the first receiving groove 13 is formed on the side of the cylindrical shell 1 biased towards the first end, and the first receiving groove 13 is spaced apart from the lamp slot 11. The heat generated by the lamp body 22 in the lamp slot 11 is transferred through the base plate 21 and the inner wall of the cylindrical shell 1 between the first receiving groove 13 and the lamp slot 11.

[0043] Specifically, the first cover plate 14 and the first receiving groove 13 can be fixedly connected by external connectors such as screws.

[0044] Furthermore, a first recess 15 is formed on the outer wall of the shell 1, a first receiving groove 13 is formed at the bottom of the first recess 15, and a first cover plate 14 is fixedly embedded in the first recess 15. Specifically, the first recess 15 provides reliable installation space for the first cover plate 14. The depth of the first recess 15 is greater than or equal to the thickness of the first cover plate 14. When the first cover plate 14 is placed in the first recess 15, the first cover plate 14 is completely located within the first recess 15, preventing the first cover plate 14 from protruding outward and ensuring aesthetics. Specifically, the first recess 15 and the first cover plate 14 are in a clearance fit. With this design, when disassembling the first cover plate 14, the screws can be loosened and removed, and the first recess 15 can be inverted to allow the first cover plate 14 to fall out of the first recess 15, facilitating disassembly.

[0045] Furthermore, a first sealing ring 151 is provided between the first groove 15 and the first cover plate 14. The first sealing ring 151 is used to seal the gap between the first groove 15 and the first cover plate 14, ensuring the airtightness of the heat absorption chamber 101. Specifically, an annular first fixing groove 152 is provided at the bottom of the first groove 15, and the first sealing ring 151 is installed in the first fixing groove 152. The first fixing groove 152 provides installation space for the first sealing ring 151, ensuring reliable and stable installation of the first sealing ring 151, and also ensuring the effective positioning of the first sealing ring 151.

[0046] Optionally, the first sealing ring 151 may be made of rubber.

[0047] In some alternative implementations, refer to Figure 4As shown, a mounting block 3 is fixedly disposed within the lamp slot 11, and a base plate 21 is fixedly disposed on the mounting block 3. The mounting block 3 has a second receiving groove 31, and a second cover plate 33 is provided on the outer cover of the second receiving groove 31. The second cover plate 33 and the second receiving groove 31 together form a heat absorption cavity 101. Specifically, this embodiment differs from the above embodiment in that the heat absorption cavity 101 is opened within the mounting block 3, and the mounting block 3 is disposed within the lamp slot 11. There is no need to specially open a groove structure on the cylindrical shell 1, which can simplify the structure of the cylindrical shell 1 to a certain extent. The heat generated by the lamp body 22 in the lamp slot 11 is transferred through the base plate 21 and the inner wall of the cylindrical shell 1 between the second receiving groove 31 and the lamp slot 11.

[0048] Specifically, the second cover plate 33 and the second receiving groove 31 can be fixedly connected by external connectors such as screws.

[0049] Furthermore, a second recess 32 is provided on the outer wall of the mounting block 3, and a second receiving groove 31 is formed at the bottom of the second recess 32. The second cover plate 33 is fixedly embedded in the second recess 32. Specifically, the second recess 32 provides reliable installation space for the second cover plate 33. The depth of the second recess 32 is greater than or equal to the thickness of the second cover plate 33. When the second cover plate 33 is placed in the second recess 32, the second cover plate 33 is completely located within the second recess 32, preventing the second cover plate 33 from protruding outward and saving space. Specifically, the second recess 32 and the second cover plate 33 are in a clearance fit. With this design, when removing the second cover plate 33, the screws can be loosened and removed, and the second recess 32 can be inverted to allow the second cover plate 33 to fall out of the second recess 32, facilitating disassembly.

[0050] Furthermore, a second sealing ring 34 is provided between the second groove 32 and the second cover plate 33. The second sealing ring 34 is used to seal the gap between the second groove 32 and the second cover plate 33, ensuring the airtightness of the heat absorption chamber 101. Specifically, an annular second fixing groove 321 is provided at the bottom of the second groove 32, and the second sealing ring 34 is installed in the second fixing groove 321. The second fixing groove 321 provides installation space for the second sealing ring 34, ensuring reliable and stable installation of the second sealing ring 34, and also ensuring the effective positioning of the second sealing ring 34.

[0051] Optionally, the second sealing ring 34 may be made of rubber.

[0052] In this embodiment, reference is made to Figure 5As shown, the second end of the cylindrical shell 1 is provided with a mounting groove 16, and a PCB board 17 electrically connected to the lamp body 22 is provided in the mounting groove 16. A USB port 171 is provided on the PCB board 17. A tail cover 4 is movably disposed at the second end of the cylindrical shell 1, and the tail cover 4 is used to open and close the mounting groove 16. Specifically, the tail cover 4 is movably disposed at the second end of the cylindrical shell 1, and the tail cover 4 can open and close the USB port 171. Specifically, when the tail cover 4 is open, the USB port 171 is open; when the tail cover 4 is closed, the USB port 171 is closed. The tail cover 4 enables the USB port 171 to be hidden. Specifically, the USB port 171 is used for external power supply to charge the lighting equipment.

[0053] In this embodiment, a dial 18 is rotatably mounted on the side wall of the cylindrical shell 1. The dial 18 contains a magnetic component, and a Hall effect magnetic switch is correspondingly mounted on the PCB board 17. When the dial 18 is rotated, the magnetic component inside the dial 18 rotates accordingly. Different Hall effect magnetic switches corresponding to the magnetic component enable the PCB board 17 to enter different mode groups. Optionally, the different mode group settings can be lighting device switch settings, color settings, brightness settings, etc.

[0054] Furthermore, a soft pressing pad 172 is provided between the tail cover 4 and the PCB board 17, and a hard pressing head 41 is provided on the tail cover 4. A pressure-sensitive element is provided on the PCB board 17. The pressure-sensitive element has a light pressure state and a heavy pressure state. When in the light pressure state, the soft pressing pad 172 presses the pressure-sensitive element; when in the heavy pressure state, the soft pressing pad 172 and the hard pressing head 41 jointly press the pressure-sensitive element. Specifically, when the tail cover 4 is pressed, causing the tail cover 4 to move but the hard pressing head 41 does not contact the soft pressing pad 172, the soft pressing pad 172 provides the pressing reaction force; when the hard pressing head 41 contacts the soft pressing pad 172, the hard pressing head 41 and the soft pressing pad 172 together provide the pressing reaction force, thereby realizing the different tactile sensations of the two-stage switch. This configuration allows for two-stage tactile pressing in the confined space of lighting equipment. For example, a small two-stage succession switch with a first-stage travel of 0.4 mm and a second-stage travel of 0.2 mm is currently compatible.

[0055] In this embodiment, the lighting device also includes a finger ring 5, which is fixed to the cylindrical shell 1. The first end of the tail cap 4 is hinged to the cylindrical shell 1, and the finger ring 5 is located at the second end of the tail cap 4. The finger ring 5 is designed to allow the operator's fingers to pass through, making it easy to carry. Specifically, the finger ring 5 is located at the second end of the tail cap 4, that is, on the side of the tail cap 4 away from its hinged end. With this configuration, when the operator holds the lighting device, the thumb presses down on the top of the tail cap 4, the other four fingers grip the cylindrical shell 1 of the lighting device, and the index finger passes through the finger ring 5, thereby achieving one-handed grip and operation of the lighting device.

[0056] The lighting device provided in this embodiment can be a flashlight or other devices with the same lighting function, and no further limitations are imposed here.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lighting device, characterized in that, include: A cylindrical shell (1) is provided with a lamp groove (11) at its first end. The cylindrical shell (1) has a heat absorption cavity (101) inside, and a heat absorber (12) is placed inside the heat absorption cavity (101). Lighting element (2) is disposed in the lamp groove (11). The lighting element (2) includes a substrate (21) and a lamp body (22) disposed on the substrate (21). The substrate (21) is fixedly connected to the lamp groove (11). The heat absorber (12) is used to absorb the heat generated by the lamp body (22) and transferred to the substrate (21).

2. The lighting device according to claim 1, characterized in that, The outer wall of the cylindrical shell (1) is provided with a first receiving groove (13). The substrate (21) is fixedly disposed on the side of the lamp groove (11) facing the first receiving groove (13). The first receiving groove (13) is covered with a first cover plate (14). The first cover plate (14) and the first receiving groove (13) together form the heat absorption cavity (101).

3. The lighting device according to claim 2, characterized in that, The outer side wall of the cylindrical shell (1) is provided with a first groove (15), the first receiving groove (13) is provided at the bottom of the first groove (15), and the first cover plate (14) is fixedly embedded in the first groove (15).

4. The lighting device according to claim 3, characterized in that, A first sealing ring (151) is provided between the first groove (15) and the first cover plate (14).

5. The lighting device according to claim 4, characterized in that, The bottom of the first groove (15) is provided with an annular first fixing groove (152), and the first sealing ring (151) is installed in the first fixing groove (152).

6. The lighting device according to claim 1, characterized in that, An installation block (3) is fixedly installed inside the lamp groove (11), and the substrate (21) is fixedly installed on the installation block (3). The installation block (3) has a second receiving groove (31), and a second cover plate (33) is provided on the outside of the second receiving groove (31). The second cover plate (33) and the second receiving groove (31) together form the heat absorption cavity (101).

7. The lighting device according to claim 6, characterized in that, The outer side wall of the mounting block (3) is provided with a second groove (32), the second receiving groove (31) is provided at the bottom of the second groove (32), and the second cover plate (33) is fixedly embedded in the second groove (32).

8. The lighting device according to claim 7, characterized in that, A second sealing ring (34) is provided between the second groove (32) and the second cover plate (33).

9. The lighting device according to claim 8, characterized in that, The bottom of the second groove (32) is provided with an annular second fixing groove (321), and the second sealing ring (34) is installed in the second fixing groove (321).

10. The lighting device according to claim 1, characterized in that, The heat absorber (12) is configured as a phase changer, and the specific heat capacity of the heat absorber (12) is greater than that of the shell (1).

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