CN114526453A - Hand-held electric torch - Google Patents
Hand-held electric torch Download PDFInfo
- Publication number
- CN114526453A CN114526453A CN202011323120.7A CN202011323120A CN114526453A CN 114526453 A CN114526453 A CN 114526453A CN 202011323120 A CN202011323120 A CN 202011323120A CN 114526453 A CN114526453 A CN 114526453A
- Authority
- CN
- China
- Prior art keywords
- cover
- cover cylinder
- heat dissipation
- flashlight
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
Abstract
The invention provides a handheld flashlight, which comprises a cover cylinder assembly and a lighting element accommodated in the cover cylinder assembly; a heat dissipation channel is formed on the cover cylinder component; the heat dissipation channel is communicated with the outside of the cover cylinder assembly and can be used for dissipating heat of the lighting element to the outside of the cover cylinder assembly. According to the invention, the heat dissipation channel is formed on the cover cylinder assembly, and the lighting element can dissipate heat to the external environment of the cover cylinder assembly through the heat dissipation channel by utilizing the mutual communication between the heat dissipation channel and the outside of the cover cylinder assembly.
Description
Technical Field
The invention belongs to a lighting device, and particularly relates to a handheld flashlight.
Background
The handheld flashlight is the handheld flashlight and is used for portable electric equipment for illumination. Modern handheld flashlights are generally classified as incandescent lamps, LEDs, HIDs, etc., which are a handheld electronic lighting tool. A typical hand held flashlight has a bulb and focusing reflector powered by a battery and has a handle type housing for hand holding. Although of a rather simple design, it was invented until the end of the 19 th century because it had to combine the invention of a battery with a light bulb. In the early days, because the storage capacity of the battery was insufficient, it was called "flash light" in english, meaning a short-lived lamp.
The shell of the handheld flashlight comprises a flashlight body, a lamp holder and a cover barrel assembly, wherein a battery is arranged in the flashlight body, a lighting element and a PCB circuit board with a positive contact terminal are arranged in the cover barrel assembly, and a negative contact terminal is arranged on the inner side of the lamp holder. A metal substrate is also disposed in the cover assembly to transfer heat generated by the lighting device to the outside through the metal substrate. However, the heat dissipation effect of the handheld flashlight cannot meet the requirements of consumers by means of transferring heat outwards through the substrate. After the handheld flashlight in the market works for a long time, the consumer still feels hot due to high temperature.
Disclosure of Invention
The invention is used for improving the heat dissipation capability of the handheld flashlight and avoiding the phenomenon of scalding hands of the handheld flashlight.
The invention provides a handheld flashlight which comprises a cover cylinder assembly and a lighting element accommodated in the cover cylinder assembly; a heat dissipation channel is formed on the cover cylinder component; the heat dissipation channel is communicated with the outside of the cover cylinder assembly and can be used for dissipating heat of the lighting element to the outside of the cover cylinder assembly.
Further, a lid section of thick bamboo subassembly includes a lid section of thick bamboo and the cover is established the lid section of thick bamboo cap of a lid section of thick bamboo, the medial surface of lid section of thick bamboo cap with be formed with between the lateral surface of a lid section of thick bamboo the heat dissipation channel.
Furthermore, a heat dissipation groove is formed in the inner side face of the cover cylinder cap, and the cover cylinder cap form the heat dissipation channel through the heat dissipation groove.
Further, the quantity of heat dissipation recess is a plurality of, and is a plurality of heat dissipation recess is followed the circumference of cover cylinder cap sets up at interval each other, and per two the interval between the heat dissipation recess equals.
Further, the cover cylinder assembly comprises a cover cylinder and a cover cylinder cap sleeved on the cover cylinder, a through hole is formed in the cover cylinder cap, and the cover cylinder cap passes through the through hole to form the heat dissipation channel.
Furthermore, the number of through-holes is a plurality of, and is a plurality of mutual interval sets up between the through-hole.
Further, the through holes are equal in size and shape.
Further, a plurality of through holes are distributed in an array in the circumferential direction and the axial direction of the cover cylinder cap.
Further, a plurality of through holes are distributed in an array staggered mode in the circumferential direction and the axial direction of the cover cylinder cap.
Furthermore, an accommodating cavity is formed in the cover cylinder, the handheld flashlight further comprises a substrate, and the substrate is accommodated in the accommodating cavity.
According to the invention, the heat dissipation channel is formed on the cover cylinder assembly, and the lighting element can dissipate heat to the external environment of the cover cylinder assembly through the heat dissipation channel by utilizing the mutual communication between the heat dissipation channel and the outside of the cover cylinder assembly.
Drawings
FIG. 1 is a schematic view of a flashlight of a first embodiment of the present invention;
FIG. 2 is a schematic view of the flashlight of FIG. 1 from another perspective;
FIG. 3 is a cross-sectional schematic view of the handheld flashlight of FIG. 2;
FIG. 4 is a schematic view of the flashlight of FIG. 1 from another perspective;
FIG. 5 is an enlarged schematic view of the flashlight of FIG. 4 at A;
FIG. 6 is a schematic view showing the structure of a flashlight of a second embodiment of the present invention.
Description of reference numerals:
100. a handheld flashlight; 10. a housing; 11. a cover cylinder; 12. a barrel body; 13. a lamp socket; 14. covering the cylinder cap; 141. a heat dissipation groove; 111. an accommodating chamber; 112. a lens; 113. a light reflecting element; 114. a substrate; 121. a barrel; 122. a connecting seat; 20. a lighting element; 30. a battery; 40. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a handheld flashlight 100 according to a first embodiment of the present invention, fig. 2 is a schematic structural diagram of the handheld flashlight 100 shown in fig. 1 at another viewing angle, fig. 3 is a schematic cross-sectional diagram of the handheld flashlight 100 shown in fig. 2, fig. 4 is a schematic structural diagram of the handheld flashlight 100 shown in fig. 1 at another viewing angle, and fig. 5 is an enlarged schematic diagram of the handheld flashlight 100 shown in fig. 4 at a position a.
The invention provides a handheld flashlight 100, wherein the handheld flashlight 100 comprises a shell 10, a lighting element 20 and a battery 30, the lighting element 20 and the battery 30 are both contained in the shell 10, and the lighting element 20 and the battery 30 are electrically connected. The housing 10 is used to mount a lighting element 20 and a battery 30, the lighting element 20 being used to radiate light for illumination, and the battery 30 being used to supply power to the lighting element 20.
The housing 10 includes a cap assembly (not numbered), a barrel 12, and a lamp holder 13, the barrel 12 is located between the cap assembly and the lamp holder 13, one end of the barrel 12 is connected to the cap assembly, and the other end is connected to the lamp holder 13.
The cover cylinder assembly is approximately cylindrical and comprises a cover cylinder 11 and a cover cylinder cap 14 sleeved on the cover cylinder 11, and an accommodating cavity 111 is formed in the cover cylinder 11; the lighting element 20 is accommodated in the accommodating cavity 111. The end of the cover cylinder 11 relatively far away from the cylinder body 12 is provided with a lens 112; the lens 112 is arranged opposite to the lighting element 20, and the lens 112 allows the light emitted by the lighting element 20 to transmit through itself and emit to the outside; meanwhile, the lens 112 also seals the accommodating cavity 111, so that impurities in the external environment are prevented from being radiated onto the light emitting surface of the lighting element 20, and the illumination quality of the lighting element 20 is improved.
A reflecting element 113 is further arranged between the lens 112 and the lighting element 20, and the reflecting element 113 is approximately bowl-shaped; the opening of one end of the fastening lens 112, which is located at both ends of the light reflecting member 113, is larger than the opening of one end of the fastening illuminating member 20.
The cover cylinder 11 is also provided with a base plate 114 inside, and the base plate 114 is accommodated in the accommodating cavity 111; the base plate 114 is in contact with the inner wall of the cover cylinder 11, and the base plate 114 is used for transferring the heat in the accommodating cavity 111 to the outside of the cover cylinder 11 through the mutual contact between the base plate and the cover cylinder 11. The substrate 114 is typically made of metal, such as aluminum or aluminum alloy, to improve the heat dissipation capability of the substrate 114.
The barrel 12 comprises a barrel 121 and a connecting seat 122 arranged at one end of the barrel 121; the cylinder 121 is connected to the cover cylinder 11 through a connection seat 122, that is, one end of the connection seat 122 is connected to the cover cylinder 11, and the other end of the connection seat 122 is connected to the cylinder 121. The battery 30 is housed inside the cylinder 121; in this embodiment, the cover cylinder 11 is screwed to the connection seat 122, and the cylinder 121 is connected to the connection seat 122 in a separate manner. It is understood that in other embodiments, other connection methods besides screw connection may be adopted between the cover cylinder 11 and the connection seat 122, and the cylinder 121 and the connection seat 122 may be integrally formed.
The lamp holder 13 is attached to an end of the cylinder 121 relatively far from the cover cylinder 11. In the present embodiment, the lamp holder 13 is screwed to the cylinder 121. It will be appreciated that in other embodiments, the lamp holder 13 may be fixedly connected to the barrel 121 by means other than a threaded connection, such as a snap fit.
The lighting element 20 may be an LED or an incandescent lamp. Preferably, the handheld flashlight 100 uses LEDs as the lighting elements, and in this case, the handheld flashlight 100 is an LED high-light handheld flashlight. The LED high-light handheld flashlight in the embodiment does not use mercury, an LED product does not contain lead, and the LED high-light handheld flashlight can protect the environment; in addition, the flashlight 100 adopting the LED lamp can efficiently convert electric energy into light energy, does not cause energy waste, and does not fade documents and clothes.
The battery 30 may be a non-rechargeable battery or a rechargeable battery. Preferably, the battery 30 in this embodiment is a rechargeable lithium battery, which has a high energy density and a high discharge voltage, does not consider the memory effect, and has the advantages of economy and environmental protection; the model of the rechargeable lithium battery can be 16340, 17335, 14500, 18650 and the like.
Conventional hand held flashlights typically dissipate the heat generated by the lighting elements 20 through the base plate 114. However, the heat dissipation effect of the handheld flashlight cannot meet the requirements of consumers by means of transferring heat outwards through the substrate. The existing handheld flashlight still causes the consumers to feel hot after working for a long time because of higher temperature (such as more than 50 ℃).
The present invention enables the lighting element 20 to radiate heat to the external environment of the cover cylinder assembly through the heat radiation channel (not numbered) formed on the cover cylinder assembly by means of the mutual communication between the heat radiation channel and the outside of the cover cylinder assembly.
In the first embodiment of the present invention, the heat dissipation channel is formed between the inner side surface of the cover cylinder cap 14 and the outer side surface of the cover cylinder 11, in which case the heat dissipation channel is formed by a gap therebetween.
Further, a heat dissipation groove 141 is formed on an inner side surface of the cover cylinder cap 14, and the heat dissipation channel is formed between the cover cylinder 11 and the cover cylinder cap 14 through the heat dissipation groove 141.
In the present embodiment, the heat dissipation groove 141 extends substantially in the axial direction of the cap 14. It is understood that in other embodiments, the heat dissipation groove 141 may be opened in other directions as long as one end or both ends thereof communicate with the external environment of the cover cylinder 11.
It is understood that in other embodiments, the heat dissipation groove 141 may be opened on the outer side surface of the cover cylinder 11.
Further, the number of the heat dissipation grooves 141 is plural, the plural heat dissipation grooves 141 are arranged at intervals along the circumferential direction of the cylinder head 14, and the intervals between every two heat dissipation grooves 141 are equal.
At this time, the heat dissipation grooves 141 can be uniformly arranged in the circumferential direction of the cap 14, and the heat dissipation effect is better.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a handheld flashlight 100 according to a second embodiment of the present invention. In the handheld flashlight 100 provided in the second embodiment of the present invention, the through hole 40 is formed on the cover cap 14; the heat generated by the lighting element 20 and located inside the accommodating cavity 111 can be transferred to the outside of the cover cylinder 11 through the through hole 40, so that the heat dissipation capability of the handheld flashlight 100 is improved, and the experience of a user is optimized.
As for the shape of the through-hole 40 itself, it may take a circular shape, a polygonal shape, or other shapes as long as the through-hole 40 can achieve heat dissipation to the lighting element 20.
In one embodiment of the present invention, the number of the through holes 40 is plural, and the plural through holes 40 are spaced apart from each other. The handheld flashlight 100 has a better heat dissipation effect.
Of course, the number of the through holes 40 may be one.
Further, the plurality of through holes 40 are equal in size and shape. With this arrangement, the convenience of processing the flashlight 100 is improved.
Further, the plurality of through holes 40 are distributed in an array in the circumferential direction and the axial direction of the cap 14. In this case, the through holes 40 are arranged in an array, and the heat dissipation effect of the flashlight 100 is further improved.
Further, the plurality of through holes 40 are staggered in an array in the circumferential direction and the axial direction of the cap 14.
At this time, the plurality of through holes 40 are ring-shaped, and a plurality of rings formed by the plurality of through holes 40 are distributed at intervals and staggered in the axial direction of the cover cylinder cap 14, that is, the plurality of through holes 40 of adjacent rings are distributed at intervals.
In one embodiment of the invention, the inner side of the lid cylinder 11 is provided with a thermal deformation element (not shown); the thermal deformation element shields the through hole 40 in a first preset temperature range, and allows the through hole 40 to communicate with the accommodating cavity 111 in a second preset temperature range. At this time, the thermal deformation element can actively control the opening and closing of the through hole 40 according to the temperature, so that the through hole 40 can be closed in a reduced temperature state, thereby preventing water stains, dirt and the like from entering the inside of the accommodating cavity 111 through the through hole 40.
As for the material of the thermal deformation member itself, a phase change material or the like may be used as long as it can be deformed enough at different temperatures to block the through hole 40.
In the handheld flashlight 100 provided by the invention, a heat dissipation channel is formed on the cover cylinder component; the heat generated by the lighting element 20 and located inside the accommodating cavity 111 can be transferred to the outside of the cover cylinder 11 through the heat dissipation channel, so that the heat dissipation capability of the handheld flashlight 100 is improved, and the experience of a user is optimized.
Meanwhile, in order to prove the improvement of the heat dissipation performance of the handheld flashlight 100 provided by the invention, five groups of comparison tests are also performed.
First set of comparative experiments
Second set of comparative experiments
Third comparative experiment
Fourth comparative experiment
Fifth group of comparative experiments
It can be seen that, under different working conditions, the temperature of the handheld flashlight 100 provided with the heat dissipation channel is obviously reduced in the temperature of the cover cylinder 11; the temperature of the part with the highest temperature of the whole handheld flashlight 100 during working is controllable, and the user experience is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A handheld flashlight comprises a cover cylinder assembly and a lighting element accommodated in the cover cylinder assembly; the cover cylinder assembly is characterized in that a heat dissipation channel is formed on the cover cylinder assembly; the heat dissipation channel is communicated with the outside of the cover cylinder assembly and can be used for dissipating heat of the lighting element to the outside of the cover cylinder assembly.
2. The handheld flashlight of claim 1, wherein the cover cartridge assembly includes a cover cartridge and a cover cartridge cap that fits over the cover cartridge, the heat sink channel being formed between an inner side of the cover cartridge cap and an outer side of the cover cartridge.
3. The handheld flashlight of claim 2, wherein the inner side of the cover cylinder cap defines a heat dissipation groove, and the heat dissipation channel is defined between the cover cylinder and the cover cylinder cap by the heat dissipation groove.
4. Handheld flashlight of claim 3, wherein said heat sink recesses are plural in number, said plural heat sink recesses being spaced apart from one another circumferentially of said flashlight cover, and the spacing between each two of said heat sink recesses being equal.
5. The handheld flashlight of claim 1, wherein the cover assembly includes a cover and a cover cap that fits over the cover, the cover cap defining a through-hole, the cover cap defining the heat dissipation channel through the through-hole.
6. Handheld flashlight of claim 5, wherein said plurality of through-holes are a plurality of spaced apart through-holes.
7. Handheld flashlight of claim 6, wherein said plurality of through holes are equal in size and shape.
8. Handheld flashlight of claim 6, wherein a plurality of said through holes are arranged in an array circumferentially and axially of said cover cap.
9. Handheld flashlight of claim 8, wherein a plurality of said through holes are staggered in an array in the circumferential direction and the axial direction of said cover cap.
10. Hand-held flashlight of claim 1, wherein said cover cartridge defines a receiving cavity therein, said hand-held flashlight further comprising a base plate, said base plate being received within said receiving cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011323120.7A CN114526453A (en) | 2020-11-23 | 2020-11-23 | Hand-held electric torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011323120.7A CN114526453A (en) | 2020-11-23 | 2020-11-23 | Hand-held electric torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114526453A true CN114526453A (en) | 2022-05-24 |
Family
ID=81618950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011323120.7A Pending CN114526453A (en) | 2020-11-23 | 2020-11-23 | Hand-held electric torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114526453A (en) |
-
2020
- 2020-11-23 CN CN202011323120.7A patent/CN114526453A/en active Pending
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