Flashlight

Abstract

The utility model relates to the technical field of flashlights, and particularly discloses a flashlight, which is characterized in that mutually connected heat dissipation bins are arranged between a lamp tube body and a lamp cap, air outlets are arranged on the heat dissipation bins, a radiator and a heat dissipation fan are respectively arranged in the heat dissipation bins, and the rotation of the heat dissipation fan can accelerate the air flow in the heat dissipation bins. Therefore, heat on the radiator is taken away and discharged from the air outlet to achieve the heat dissipation effect, the heat dissipation problem of the high-power flashlight can be solved, the Fresnel lens is arranged in the optical assembly of the lamp holder, the light utilization rate can be effectively improved, and the irradiation range of the flashlight is farther.

Description

Technical Field

[0001] The utility model relates to the technical field of flashlights, in particular to a flashlight. Background Art

[0002] A flashlight is a handheld electronic lighting tool. A typical flashlight is generally composed of a light-emitting body, a battery, a circuit board, a barrel, and a lamp holder. The barrel is a handle-type shell for hand-held use.

[0003] In addition, the existing flashlights have a relatively compact structure, so the heat dissipation structure therein cannot solve the heat dissipation problem of high-power flashlights. Therefore, the power of existing flashlights is generally not very high. Even if there are high-power flashlights, they cannot achieve long-term continuous high-power light emission.

[0004] The technical problem to be solved by this application is: to design a flashlight that can solve the heat dissipation problem of high-power flashlights. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a flashlight that can solve the problem of high-power light emission and heat dissipation.

[0006] The technical solution adopted by the utility model is: a flashlight, including a lamp body and a lamp head, a light-emitting body for emitting light is arranged in the lamp head, a heat dissipation device connected to each other is arranged between the lamp body and the lamp head, the heat dissipation device includes a heat dissipation bin whose two ends are respectively connected to the lamp body and the lamp head, a radiator fixedly installed therewith for heat dissipation, a heat dissipation fan fixedly connected to the radiator, and the heat dissipation bin is also provided with an air outlet for heat dissipation.

[0007] In some embodiments, the radiator is further provided with a plurality of heat sinks for increasing the heat dissipation area, and a heat dissipation fan is provided corresponding to the heat dissipation end of the radiator, and the heat dissipation fan is waterproof.

[0008] In some embodiments, a light emitting body for emitting light is provided in the lamp holder, and a driving circuit board fixedly mounted on one end of the lamp body near the heat dissipation compartment for driving the light emitting body to emit light is provided, and the driving circuit board is provided with a driving battery electrically connected thereto.

[0009] In some embodiments, the lamp body is provided with an air inlet at one end away from the heat dissipation chamber for taking in air to dissipate heat from the driving battery, and the driving circuit board is provided with a plurality of air slots for facilitating the cooling fan to inhale air.

[0010] In some embodiments, the driving circuit board includes a driving board fixedly mounted on the lamp body for driving the light-emitting body to emit light, a positive power plate electrically connected to the driving board, and a driving battery electrically connected to the positive power plate.

[0011] In some embodiments, the driving battery is further provided with a negative power plate electrically connected to the driving circuit board at one end away from the driving circuit board, and the driving battery is further provided with a battery waterproof ring for waterproofing at the end provided with the negative power plate.

[0012] In some embodiments, the heat sink is provided with a substrate fixedly connected to the side close to the lamp head for mounting the light-emitting body, the substrate is electrically connected to the driving circuit board, the substrate is also provided with a focusing lens group fixedly mounted thereon, and the lamp head is also provided with an optical component mounted thereon, the optical component includes a Fresnel lens fixed thereto to improve light utilization.

[0013] In some embodiments, a mounting ring is provided at one end of the lamp holder away from the heat sink and is locked therewith, a sliding sleeve is provided inside the lamp holder and is threadedly connected to the mounting ring, the sliding sleeve is fixed to the heat sink in a limited position, and the substrate is located inside the sliding sleeve.

[0014] In some embodiments, the Fresnel lens is fixed with the mounting ring, the mounting ring is further provided with a front lens fixed with the mounting ring, and a gasket is further provided between the front lens and the Fresnel lens to limit the mounting ring.

[0015] In some embodiments, the mounting ring is further provided with a chamfered surface at one end away from the heat sink, and the chamfered surface is provided with a fluorescent coating for facilitating nighttime finding, and a front cover is further provided in the mounting ring to limit the mounting circle.

[0016] The utility model has the following technical effects: a heat dissipation chamber connected to each other is provided between the lamp tube body and the lamp holder, and an air outlet is provided on the heat dissipation chamber, a radiator and a heat dissipation fan are respectively provided in the heat dissipation chamber, and the rotation of the heat dissipation fan can accelerate the air flow in the heat dissipation chamber, thereby taking away the heat on the radiator and discharging it from the air outlet to achieve the heat dissipation effect, thereby making it possible to solve the heat dissipation problem of high-power flashlights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the flashlight of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the flashlight of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the flashlight of the utility model;

[0020] Figure 4 This is a schematic diagram of the explosion structure of the flashlight of the utility model;

[0021] Figure 5 It is a schematic diagram of the installation ring structure of the flashlight of the utility model.

[0022] The numbers and names in the figure correspond to each other as follows: 1. lamp body; 2. lamp holder; 3. heat dissipation device; 301. heat dissipation chamber; 302. radiator; 303. cooling fan; 304. air outlet; 201. Fresnel lens; 305. heat sink; 10. driving circuit board; 11. driving battery; 12. air inlet; 101. air duct; 102. driving board; 103. positive plate of power supply; 104. negative plate of power supply; 105. battery waterproof ring; 306. substrate; 307. focusing lens group; 202. mounting ring; 203. sliding sleeve; 204. front lens; 205. gasket; 206. chamfered surface; 207. front cover. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5The utility model provides a technical solution: a flashlight, including a lamp body 1 and a lamp head 2, wherein the lamp head 2 is provided with a luminous body for illuminating light, a heat dissipation device 3 connected to each other is provided between the lamp body 1 and the lamp head 2, the heat dissipation device 3 includes a heat dissipation bin 301 connected to the lamp body 1 and the lamp head 2 at both ends, a heat dissipation bin 301 is provided with a radiator 302 fixedly installed therewith for heat dissipation, and a heat dissipation fan 303 fixedly connected to the radiator 302, the heat dissipation bin 301 is also provided with an air outlet 304 for heat dissipation and air outlet, and a plurality of heat dissipation fins 305 fixedly connected therewith are also provided on the radiator 302, and the heat dissipation area can be effectively increased by providing the heat dissipation fins 305, and the heat dissipation fan 303 is provided with a plurality of heat dissipation fins 305 fixedly connected thereto. 03 is also arranged corresponding to the heat dissipation end of the radiator 302, so that the wind blown by the cooling fan 303 can be effectively blown on the heat sink 305 to take away the heat, and the cooling fan 303 is also waterproof, which can prevent the cooling fan 303 from being unable to be used after the flashlight falls into water. A driving circuit board 10 is fixedly installed at one end of the lamp body 1 close to the heat dissipation bin 301 for driving the light-emitting body to emit light and illuminate. The driving circuit board 10 is provided with a driving battery 11 electrically connected thereto. The lamp body 1 is provided with an air inlet 12 at the end away from the heat dissipation bin 301 for taking in air to dissipate the heat of the driving battery 11. The driving circuit board 10 is provided with a plurality of air intake ports 12 for facilitating the cooling fan 303 to inhale air. The wind slot 101 is provided with a plurality of wind slots 101 on the driving circuit board 10, so that a channel-type wind structure is formed between the air inlet 12 and the wind slots 101. When a high-power light bulb is used as the light source, the cooling fan 303 rotates to suck air in from the air inlet 12. The wind that enters the lamp body 1 from the air inlet 12 enters the heat dissipation chamber 301 through the wind slots 101. Since the wind flow sucked in from the air inlet 12 passes through the lamp body 1 and then enters the heat dissipation chamber 301 from the wind slots 101, it will take away the heat of the driving battery 11 itself. Therefore, the driving battery 11 itself will be cooled and dissipated, thereby enabling the power supply of the high-power light source, and the heat sink 302 is provided with a substrate 306 fixedly connected thereto on the side close to the lamp holder 2 for mounting the light-emitting body. The substrate 306 is electrically connected to the driving circuit board 10. When the light-emitting body continuously emits high-power light, the high temperature of the light-emitting body itself will be transferred to the radiator 302 through heat transfer and then to the heat sink 305. Due to the rotation of the cooling fan 303, the air in the heat dissipation chamber 301 also flows faster. Therefore, the air in the heat dissipation chamber 301 can take away the heat on the heat sink 305 in time and be discharged from the air outlet 304, thereby achieving heat dissipation and cooling of the light-emitting body, so that the driving battery 11 can continuously supply power for high-power light-emitting bodies, solving the heat dissipation problem of high-power light-emitting bodies.

[0025] The driving circuit board 10 includes a driving board 102 fixedly mounted on the lamp body 1 for directly driving the light-emitting body to emit light, a positive power plate 103 electrically connected to the driving board 102, a driving battery 11 electrically connected to the positive power plate 103, and the driving battery 11 is also provided with a negative power plate 104 electrically connected to the driving circuit board 10 at one end of the driving battery 11 away from the driving circuit board 10. The driving battery 11 is also provided with a battery waterproof ring 105 for waterproofing at the end provided with the negative power plate 104. The battery waterproof ring 105 can prevent the driving battery 11 from short-circuiting after the flashlight falls into water.

[0026] The lamp holder 2 is provided with a mounting ring 202 at one end away from the radiator 302, and is mounted thereon. A sleeve 203 is provided inside the lamp holder 2 and is threadedly connected to the mounting ring 202. The sleeve 203 is fixed to the radiator 302. A substrate 306 is located inside the sleeve 203. A focusing lens group 307 is also provided on the substrate 306 and is fixed thereon. The focusing lens group 307 is located in front of the luminous body. The focusing lens group 307 is composed of 3 lenses made of k9 glass. Through the multi-stage focusing of the lens, the light utilization rate reaches more than 95%. The light emitted by the luminous body can be effectively focused by providing the focusing lens group 307. The lamp head 2 is also provided with an optical component that is mounted therewith, and the optical component includes a Fresnel lens 201 that is fixed to a mounting ring 202 on the lamp head 2, a front lens 204 that is fixed therewith is provided in the mounting ring 202, a gasket 205 that is limited by the mounting ring 202 is provided between the front lens 204 and the Fresnel lens 201, and a front cover 207 that is limited by the mounting ring 202 is provided in the mounting ring 202. By using the Fresnel lens 201 in the optical component and combining the Fresnel lens 201 with the front lens 204, the light utilization rate of the light source can be effectively improved, thereby extending the irradiation range.

[0027] The mounting ring 202 is also provided with a chamfered surface 206 at one end away from the heat sink 302, and a fluorescent coating is provided on the chamfered surface 206. By providing a fluorescent coating on the chamfered surface 206 of the mounting ring 202, the flashlight can be found in a timely and convenient manner even in a dark environment at night without using other light sources.

[0028] The working principle of the utility model is as follows: when a high-power light-emitting bulb is used, the cooling fan 303 rotates, and the external airflow enters the lamp body 1 through the air inlet, and then enters the heat dissipation chamber 301 along the driving battery 11 through the wind slot 101 in turn. In the process of passing along the surface of the driving battery 11, the heat on the surface of the driving battery 11 can be effectively taken away, so that the driving battery 11 is first cooled and cooled. When the airflow flows into the heat dissipation chamber 301, due to the rotation of the cooling fan 303, the airflow can effectively take away the heat in the heat sink 305 on the radiator 302 and be discharged from the air outlet 304, thereby achieving the heat dissipation and cooling of the light-emitting body. Through the cooperation of the cooling fan 303 and the radiator 302, the problem of heat dissipation of high-power flashlights can be effectively solved, and a Fresnel lens 201 is provided in the optical component, so that it can effectively improve the light utilization rate of the light-emitting body and make its irradiation range longer.

[0029] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flashlight, comprising a lamp body (1) and a lamp holder (2), wherein a light emitting body for emitting light is arranged in the lamp holder (2), characterized in that: A heat dissipation device (3) connected to each other is provided between the lamp body (1) and the lamp holder (2), the heat dissipation device (3) comprising a heat dissipation chamber (301) with two ends respectively connected to the lamp body (1) and the lamp holder (2), a heat sink (302) fixedly mounted thereto for heat dissipation, and a heat dissipation fan (303) fixedly connected to the heat sink (302) being provided inside the heat dissipation chamber (301), and an air outlet (304) for heat dissipation and air discharge.

2. The flashlight according to claim 1, characterized in that: The radiator (302) is also provided with a plurality of heat sinks (305) for increasing the heat dissipation area. The heat dissipation fan (303) is arranged corresponding to the heat dissipation end of the radiator (302). The heat dissipation fan (303) is waterproof.

3. The flashlight according to claim 1, characterized in that: A driving circuit board (10) fixedly mounted on one end of the lamp body (1) close to the heat dissipation chamber (301) and used to drive the light-emitting body to emit light is provided, and the driving circuit board (10) is provided with a driving battery (11) electrically connected thereto.

4. The flashlight according to claim 3, characterized in that: The lamp body (1) is provided with an air inlet (12) at one end away from the heat dissipation chamber (301) for taking in air to dissipate heat from the driving battery (11), and the driving circuit board (10) is provided with a plurality of air slots (101) for facilitating the cooling fan (303) to inhale air.

5. The flashlight according to claim 3, characterized in that: The driving circuit board (10) comprises a driving board (102) fixedly mounted on the lamp body (1) and used to drive the light emitter to emit light, and a power positive plate (103) electrically connected to the driving board (102); the driving battery (11) is electrically connected to the power positive plate (103).

6. The flashlight according to claim 3, characterized in that: The driving battery (11) is also provided with a negative power plate (104) electrically connected to the driving circuit board (10) at one end away from the driving circuit board (10), and the driving battery (11) is also provided with a battery waterproof ring (105) for waterproofing at the end provided with the negative power plate (104).

7. The flashlight according to claim 3, characterized in that: The heat sink (302) is provided with a substrate (306) fixedly connected to the lamp holder (2) on the side thereof for mounting a light-emitting body, the substrate (306) being electrically connected to a driving circuit board (10), the substrate (306) also being provided with a focusing lens group (307) fixedly mounted thereon, and the lamp holder (2) also being provided with an optical component mounted thereon in a locking position, the optical component comprising a Fresnel lens (201) fixedly mounted thereon in a locking position with the lamp holder (2) for improving light utilization efficiency.

8. The flashlight according to claim 7, characterized in that: The lamp holder (2) is provided with a mounting ring (202) at one end away from the heat sink (302) and is mounted therewith, and a sliding sleeve (203) is provided inside the lamp holder (2) and is threadedly connected to the mounting ring (202), the sliding sleeve (203) and the heat sink (302) are fixed in position, and the base plate (306) is located inside the sliding sleeve (203).

9. The flashlight according to claim 8, characterized in that: The Fresnel lens (201) is fixedly engaged with the mounting ring (202), the mounting ring (202) is further provided with a front lens (204) fixedly engaged with the front lens (204), and a gasket (205) is further provided between the front lens (204) and the Fresnel lens (201) to limit the position of the mounting ring (202).

10. The flashlight according to claim 8, characterized in that The mounting ring (202) is also provided with a chamfered surface (206) at one end away from the heat sink (302), and the chamfered surface (206) is provided with a fluorescent coating for facilitating nighttime finding. The mounting ring (202) is also provided with a front cover (207) which is fixedly mounted therewith.

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