Flashlight lamp holder

Abstract

The utility model relates to the technical field of lighting equipment, in particular to a flashlight lamp holder, which comprises a lamp tube and a light source arranged in the lamp tube, and further comprises at least one pressure release valve arranged on the tube wall of the lamp tube, the pressure release valve comprises a hollow valve body penetrating through the inside and the outside of the lamp tube, and a waterproof breathable film is arranged in the hollow valve body. The pressure release valve is arranged on the outer wall of the lamp tube, so that air inside and outside the lamp tube is communicated, when the temperature in the lamp tube rises and the pressure is increased, hot air in the lamp holder is discharged to the environment outside the lamp holder through the waterproof breathable film in the pressure release valve, the balance of the internal pressure and the external pressure is achieved, and liquid, dust and particles outside the lamp holder are prevented from falling off. Therefore, not only is the sealing effect ensured, but also the problems of internal and external pressure and temperature difference of the lamp holder are solved. In addition, the flashlight is simple in structure, the waterproof breathable film can be conveniently cleaned or replaced, and daily maintenance of the flashlight is facilitated.

Description

Technical Field

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

[0002] With the advancement of technology, high-power light sources emerge in an endless stream, and the power is getting bigger and bigger, and the heat is also increasing. As a high-power flashlight used in outdoor environments, it is more likely to have heating problems due to its small size while requiring high brightness. At the same time, outdoor high-power flashlights are also required to have good waterproof and dustproof capabilities, and flashlights with good sealing will also prevent the heat inside the flashlight head from being released to the external environment of the flashlight.

[0003] Most existing flashlights generally have a light source compartment inside the lamp head, in which a light source, a lens and a reflector cup are installed. The reflector cup is used to converge the light beam and control the illumination distance and illumination area of ​​the main light spot. The light source is fixed at the bottom of the light source compartment and the mouth of the reflector cup. The lens set at the front end of the lamp head is closely combined with the reflector cup and other components, so that the light source compartment forms a sealed space. When the light source emits light, the light is projected onto the inner wall of the reflector cup and projected out after refraction. At the same time, the heat emitted by the light source will be sealed inside the light source compartment.

[0004] Some flashlight lamp holders also use lenses instead of reflective cups in the light source compartment, that is, a light source is installed at the bottom of the light source compartment, and a lens corresponding to the light emitting angle of the light source is provided at the front end of the light source compartment, thereby forming a sealed light source compartment between the light source, the inner wall of the lamp holder and the lens. Similarly, when the light source emits light, the heat will be sealed in the light source compartment in the lamp holder, and the heat conduction will also be very slow.

[0005] In the above two methods, when the hot air in the lamp head forms a temperature difference with the temperature of the external environment of the lamp head, thereby also forming a pressure difference, the air in the lamp head expands due to the heat, which will cause the lens to be subjected to increased stress and thus cause the lens to burst. It will also cause condensation on the surface of the lens to affect the light output of the flashlight. The stress of the sealing rubber ring will also be damaged, causing it to be unable to be waterproof and dustproof. High temperature will also cause the life of the light source to decay. The hot air cannot be released to the external environment in time, which will also cause the flashlight lamp head to become hot and unable to be held. Utility Model Content

[0006] The utility model overcomes the above disadvantages and provides a flashlight lamp holder which has a simple structure, can effectively dissipate heat and is easy to maintain.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a flashlight lamp holder, including a lamp tube and a light source arranged in the lamp tube, and also including at least one pressure relief valve arranged on the tube wall of the lamp tube, the pressure relief valve includes a hollow valve body passing through the inside and outside of the lamp tube, and a waterproof and breathable membrane is arranged in the hollow valve body.

[0008] Furthermore, one end of the hollow valve body disposed outside the lamp tube may have an exhaust chamber, and a side of the exhaust chamber is provided with an exhaust port, and the exhaust port is communicated with the hollow valve body.

[0009] Furthermore, the end of the exhaust chamber may have a detachable protective cap.

[0010] Furthermore, the exhaust port may be in the shape of a circular hole or a grid.

[0011] Furthermore, the hollow valve body may have an external thread, and the tube wall of the lamp tube may have a corresponding internal thread, and the hollow valve body is fixed to the tube wall of the lamp tube by threaded connection.

[0012] Furthermore, a sealing ring may be provided on the outer wall of the hollow valve body.

[0013] Furthermore, the inner wall of the connection between the hollow valve body and the exhaust chamber may have an annular step, and the waterproof breathable membrane is fixed to the annular step.

[0014] Furthermore, the end surface of the protective cap may be provided with a slot.

[0015] Furthermore, the lamp tube also includes a reflective cup and a lens fixed inside the lamp tube, the reflective cup has an upper cup mouth and a lower cup mouth, the light source passes through the lower cup mouth of the reflective cup and is placed in the reflective cup, the lens covers the upper cup mouth of the reflective cup, a lens pressing ring is fixed to the end of the lamp tube, and the reflective cup is fixed in the lamp tube, and the side wall of the reflective cup is also provided with a vent.

[0016] Furthermore, a lens may be fixedly installed in the lamp tube, and the pressure relief valve is located on the tube wall between the lens and the light source.

[0017] The utility model provides a pressure relief valve on the outer wall of the lamp tube to connect the air inside and outside the lamp tube. When the temperature and pressure inside the lamp tube increase, the hot air inside the lamp head is discharged into the external environment of the lamp head through the waterproof breathable membrane in the pressure relief valve, thereby achieving internal and external pressure balance. Liquid, dust and particulate matter outside the lamp head are blocked by the waterproof breathable membrane and cannot enter the interior of the lamp head. Therefore, the sealing effect is guaranteed and the problem of pressure and temperature difference inside and outside the lamp head is improved. In addition, the utility model has a simple structure, and the waterproof breathable membrane can be easily cleaned or replaced, which is easy for daily maintenance of the flashlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded schematic diagram of the first embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the combination of the first embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the combined state of the pressure relief valve in the first embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the combination of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with specific embodiments.

[0023] Embodiment 1:

[0024] like Figure 1 The figure shows an exploded schematic diagram of the first embodiment of the present invention. Figure 2 The figure shows a schematic diagram of the combination of the first embodiment of the utility model. Figure 1 , Figure 2 The present embodiment includes a lamp tube 11 and a light source 13 arranged in the lamp tube 11 , a reflective cup 12 , a sealing ring 15 , a lens 16 and a lens pressing ring 17 , and a pressure relief valve arranged on the tube wall of the lamp tube 11 .

[0025] The reflective cup 12 is funnel-shaped, with an upper cup opening with a larger opening and a lower cup opening with a smaller opening. The light source 13 is fixed on the circuit board 14, passes through the lower cup opening with a smaller opening of the reflective cup 13, and is placed in the reflective cup 12. The lens 16 covers the upper cup opening with a larger opening of the reflective cup 12. The lens pressing ring 17 is fixedly installed with the end of the lamp tube 11 through internal and external threads, and the reflective cup 12 is fixed in the lamp tube 11. The space in the lamp tube 11 that accommodates the light source 13, the reflective cup 12 and other components constitutes a light source compartment. The reflective cup 12 and the lens 16 are sealed by the sealing ring 15 to prevent external water vapor and dust from entering the light source compartment through the gap at the edge of the lens 16. The side wall of the reflective cup 12 is also provided with a plurality of vents 121 that penetrate the inner and outer spaces of the reflective cup.

[0026] like Figure 3 As shown in FIG. 1 , it is a schematic diagram of the combined state of the pressure relief valve in this embodiment. Figure 1 , Figure 2 , Figure 3The pressure relief valve includes a hollow valve body 31, a waterproof breathable membrane 32, an exhaust chamber 34 and a protective cap 35. The hollow valve body 31 passes through the inside and outside of the lamp tube 11. The outer wall of the hollow valve body 21 has an external thread 131, and the tube wall of the lamp tube 11 has a corresponding internal thread 18. The hollow valve body 21 is connected and fixed to the tube wall of the lamp tube 11 through the external thread 331 and the internal thread 18. The end of the hollow valve body 31 placed outside the lamp tube 11 has an exhaust chamber 34, and the side of the exhaust chamber 34 is surrounded by a plurality of circular hole-shaped exhaust ports 341. The end of the exhaust chamber 34 has a detachable protective cap 35, and the exhaust chamber 34 and the protective cap 35 can also be connected by threads. The end surface of the protective cap 35 is provided with a flat groove 351, which is convenient for installing or removing the protective cap 35 by tools that are easy to obtain, such as a flat screwdriver and a coin. The inner wall of the connection between the hollow valve body 31 and the exhaust chamber 34 has an annular step 36, and the waterproof breathable membrane 32 is fixed to the annular step 36 by bonding or other methods. A sealing ring 33 is sleeved on the outer wall of the hollow valve body 31, and forms a seal when the pressure relief valve is installed on the wall of the lamp tube 11, so as to prevent external water vapor and dust from entering the light source compartment of the lamp tube 11 through the gap at the edge of the hollow valve body 31. In addition, the exhaust port can also adopt different shapes such as a grid shape according to needs.

[0027] The utility model arranges one or more pressure relief valves on the wall of the lamp tube, so that the hot air inside the flashlight lamp holder can be discharged to the outside of the lamp holder through the hollow valve body 31 of the pressure relief valve and then through the exhaust port 341 of the exhaust chamber 34, thereby achieving pressure balance inside and outside the lamp holder. At the same time, since a waterproof and breathable membrane 32 is arranged in the hollow valve body 31, liquid or particulate matter in the external environment of the flashlight is blocked by the waterproof and breathable membrane 32 and cannot enter the interior of the lamp holder, which not only ensures the sealing effect of the light source compartment, but also improves the problems of pressure and temperature difference inside and outside the lamp holder.

[0028] The end of the exhaust chamber 34 is provided with a detachable protective cap 35, which can prevent sharp objects from being directly inserted into the pressure relief valve and damaging the waterproof breathable membrane 32. At the same time, after long-term use, the waterproof breathable membrane 32 may be attached with dust, mud and sand, which will affect the pressure relief and exhaust effects. The protective cap 35 can be removed as needed to clean the attachments on the waterproof breathable membrane 32. Since the waterproof breathable membrane 32 also has a certain life span, the threaded connection between the hollow valve body 31 of the pressure relief valve and the lamp tube 11 is easy to disassemble, which is more convenient for replacing and maintaining the waterproof breathable membrane 32, the sealing ring 33 and the entire pressure relief valve, which is beneficial to the daily maintenance of the flashlight. In this embodiment, the multiple vents 121 on the side wall of the reflective cup 12 can also further help to discharge the hot air in the light source compartment, that is, the reflective cup 12, effectively solving the problem in the prior art that the closed light source compartment cannot dissipate heat.

[0029] Embodiment 2:

[0030] like Figure 4 As shown in the figure, it is a schematic diagram of the combination of the second embodiment of the utility model. In this embodiment, it includes a lamp tube 21, a light source (not shown in the figure) and a lens 22 arranged in the lamp tube 21, and a pressure relief valve 23 arranged on the tube wall of the lamp tube 21. A sealed light source compartment is formed between the light source, the lamp tube 21 and the lens 22, and the pressure relief valve 23 is located on the tube wall between the lens 22 and the light source, so that the hot air in the light source compartment can be discharged to the outside of the lamp holder through the pressure relief valve 23, so as to achieve pressure balance inside and outside the lamp holder. The structure of the pressure relief valve 23 is basically the same as that of the first embodiment, and will not be repeated.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] The flashlight lamp holder provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A flashlight lamp holder, comprising a lamp tube and a light source arranged in the lamp tube, characterized in that: It also includes at least one pressure relief valve arranged on the tube wall of the lamp tube, and the pressure relief valve includes a hollow valve body that passes through the inside and outside of the lamp tube, and a waterproof and breathable membrane is arranged in the hollow valve body.

2. The flashlight lamp holder according to claim 1, characterized in that: One end of the hollow valve body disposed outside the lamp tube is provided with an exhaust chamber, and a side of the exhaust chamber is provided with an exhaust port, and the exhaust port is communicated with the hollow valve body.

3. The flashlight lamp holder according to claim 2, characterized in that: The end of the exhaust chamber is provided with a detachable protective cap.

4. The flashlight lamp holder according to claim 3, characterized in that: The end surface of the protective cap is provided with a slot.

5. The flashlight lamp holder according to claim 2, characterized in that: The exhaust port is in the shape of a circular hole or a grid.

6. The flashlight lamp holder according to claim 1, characterized in that: The hollow valve body has an external thread, the tube wall of the lamp tube has a corresponding internal thread, and the hollow valve body is fixed to the tube wall of the lamp tube by threaded connection.

7. The flashlight lamp holder according to claim 2, characterized in that: The inner wall of the connection between the hollow valve body and the exhaust chamber has an annular step, and the waterproof breathable membrane is fixed to the annular step.

8. The flashlight lamp holder according to claim 1, characterized in that: The outer wall of the hollow valve body is also provided with a sealing ring.

9. The flashlight lamp holder according to any one of claims 1 to 8, characterized in that: The lamp tube also includes a reflective cup and a lens fixed inside the lamp tube, the reflective cup has an upper cup mouth and a lower cup mouth, the light source passes through the lower cup mouth of the reflective cup and is placed in the reflective cup, the lens covers the upper cup mouth of the reflective cup, a lens pressing ring is fixed to the end of the lamp tube, and the reflective cup is fixed in the lamp tube at the same time, and the side wall of the reflective cup is also provided with a vent.

10. The flashlight lamp holder according to any one of claims 1 to 8, characterized in that: A lens is also fixedly installed in the lamp tube, and the pressure relief valve is located on the tube wall between the lens and the light source.

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