CN214807927U - Portable phototherapy instrument - Google Patents
Portable phototherapy instrument Download PDFInfo
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- CN214807927U CN214807927U CN202120023478.1U CN202120023478U CN214807927U CN 214807927 U CN214807927 U CN 214807927U CN 202120023478 U CN202120023478 U CN 202120023478U CN 214807927 U CN214807927 U CN 214807927U
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- fan
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- phototherapy instrument
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- 238000001126 phototherapy Methods 0.000 title claims abstract description 68
- 239000004065 semiconductor Substances 0.000 claims abstract description 30
- 238000005057 refrigeration Methods 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 29
- 238000009423 ventilation Methods 0.000 abstract description 9
- 239000003570 air Substances 0.000 description 24
- 239000000758 substrate Substances 0.000 description 12
- 229920001296 polysiloxane Polymers 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 239000004519 grease Substances 0.000 description 5
- 238000011282 treatment Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
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- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002647 laser therapy Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
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- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Radiation-Therapy Devices (AREA)
Abstract
The utility model provides a portable phototherapy instrument, at least, the portable phototherapy instrument comprises a shell component, and a LED light source, a semiconductor refrigeration piece and a control module which are arranged in the shell component. The shell assembly is a hollow structure formed by buckling a first shell and a second shell, and a light-transmitting area and a ventilation hole are formed in the surface of the shell assembly. The LED light source is mounted within the housing assembly and faces the optically transmissive region. The semiconductor refrigerating sheet is attached to the back of the LED light source. The control module is mounted within the housing assembly for controlling operation of the phototherapy instrument. The utility model has the advantages that: the combination of multiple heat dissipation modes is adopted, so that the heat dissipation performance of the portable phototherapy instrument is greatly enhanced.
Description
Technical Field
The utility model relates to a portable phototherapy instrument, in particular to radiating portable phototherapy instrument of high efficiency belongs to phototherapy technical field.
Background
Phototherapy is a physical therapy method for treating diseases by using radiant energy of light, such as ultraviolet therapy, visible light therapy, infrared therapy and laser therapy. Phototherapy has been widely used in hospital departments. With the improvement of safety and effectiveness of phototherapy and the expansion of demand, phototherapy products are rapidly developing towards household miniaturization.
The domestic type miniaturization phototherapy product on the existing market mostly uses the LED light source as the main, compares with the phototherapy instrument that the hospital used, and general irradiation intensity is lower, and the phototherapy time is than longer, and a position treatment just needs five minutes to about ten minutes. Patients are very time consuming when performing multi-site treatments. The main reason that the household miniaturized phototherapy instrument has low irradiation intensity is influenced by heat dissipation capacity, the conversion efficiency of converting electric energy into light energy is generally between 5% and 50%, and the rest of electric energy is converted into heat energy which needs to be emitted to the surrounding environment.
The heat dissipation system of the large phototherapy instrument used in the general hospital is composed of a water cooling system and a large radiator, and the household small phototherapy instrument in the market can not adopt the heat dissipation system with the similar large volume. The heat dissipation of domestic miniaturized phototherapy instrument all adopts natural heat radiation structure usually, and some products have adopted the small-size compulsory heat dissipation module of radiator with the fan, but are subject to the space problem, and its heat-sinking capability still is very limited, especially when service environment temperature is higher, more can't satisfy the heat dissipation requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the heat dissipation performance of the miniaturized portable phototherapy instrument is improved.
In order to solve the technical problem, the utility model provides a radiating portable phototherapy instrument of high efficiency, the phototherapy instrument includes at least:
the shell assembly is a hollow structure formed by buckling a first shell and a second shell, and a light-transmitting area and a vent hole are formed in the surface of the shell assembly;
an LED light source mounted within the housing assembly and facing the light transmissive region;
the semiconductor refrigerating sheet is attached to the back of the LED light source;
and the control module is arranged in the shell assembly and is used for controlling the work of the phototherapy instrument.
In some embodiments, the semiconductor refrigeration piece adopts a single-stage or multi-stage semiconductor refrigeration piece.
In some embodiments, the phototherapy instrument further comprises a heat sink for dissipating heat from the semiconductor cooling fins.
In some embodiments, the heat sink is a finned heat sink, and the heat sink is provided with a fan on each side along fins; the first fan is used for blowing air to the radiator, the second fan is used for sucking air from the radiator, and the rated air volume of the second fan is larger than that of the first fan.
In some embodiments, the rated air volume of the second fan is 1.1-1.3 times of the rated air volume of the first fan.
In some embodiments, a heat transfer component is mounted between the semiconductor chilling plate and the heat sink.
In some embodiments, the housing assembly has a handle that is hollow and in communication with the interior of the housing assembly, the handle having a handle vent on a surface thereof.
In some embodiments, the handle is internally provided with a rechargeable battery and a power control board, and the tail part of the handle is provided with a charging port.
In some embodiments, a power plug is attached to the handle tail.
In some embodiments, the phototherapy instrument has a display screen.
The utility model has the advantages that: the combination of multiple heat dissipation modes is adopted, so that the heat dissipation performance of the portable phototherapy instrument is greatly enhanced.
Drawings
Fig. 1 is a schematic overall appearance of a portable phototherapy apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a portable phototherapy apparatus according to a preferred embodiment of the present invention from a first perspective.
Fig. 3 is a schematic cross-sectional view of a portable phototherapy apparatus according to a preferred embodiment of the present invention from a second perspective.
Fig. 4 is an exploded view of the portable phototherapy apparatus according to a preferred embodiment of the present invention.
Fig. 5 is a schematic structural view of a light source and a heat sink in the portable phototherapy apparatus according to a preferred embodiment of the present invention.
Fig. 6 is a schematic view of the structure of the light source module in the portable phototherapy apparatus according to another preferred embodiment of the present invention.
The reference numbers of the above figures are as follows:
110 upper shell
111 display screen mounting hole
112 push button
113 charging hole
120 lower casing
121 light-transmitting plate mounting hole
122 light-transmitting protective plate
123 strip-shaped vent hole
124 strip ventilation holes
125 circular vent
126 circular vent hole
127 Battery mounting groove
128 battery cover plate
210LED light source
211 base plate
212LED chip
220 semiconductor refrigerating sheet
230 heat sink
231 heat dissipation fin
240 fan
250 fan
310 cell
320 power supply control panel
330 touch display screen
340 Main control board
410LED light source
420 semiconductor refrigerating sheet
430 heat transfer assembly
440 heat sink
Detailed Description
Unless otherwise defined, technical or scientific terms used in the claims and the specification of this patent shall have the ordinary meaning as understood by those of ordinary skill in the art to which this patent belongs.
As used in this specification and the appended claims, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. In the description of this patent, unless otherwise indicated, "a plurality" means two or more. The word "comprising" or "having", and the like, means that the element or item appearing before "comprises" or "having" covers the element or item listed after "comprising" or "having" and its equivalent, but does not exclude other elements or items.
In the description of this patent, it is to be understood that the terms "upper," "lower," "left," "right," "horizontal," "lateral," "longitudinal," "top," "bottom," "inner," "outer," "clockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings to facilitate the description of the patent and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The radiator has wide application in various heating occasions, and the heat radiation capability of the radiator is mainly related to the following conditions:
(1) the temperature difference between the radiator and the heat exchange medium is related, and the larger the temperature difference is, the higher the heat dissipation capacity is;
(2) the larger the heat dissipation area is, the higher the heat dissipation capacity is;
(3) the higher the flow rate or flow of the heat exchange medium over the heat sink, the higher the heat dissipation capacity.
The existing household phototherapy products in the market are only provided with radiating fins on a light source or radiating fans on the radiating fins. Because the light source, especially the LED light source itself, cannot bear a high working temperature, usually the working temperature is not more than 50 degrees celsius, if the heat of the light source cannot be dissipated in time, the temperature of the light source will be too high, and even the light source will be damaged. Therefore, the temperature difference between the heat sink and the heat exchange medium is limited, and particularly in a hot environment, the temperature difference becomes smaller. In addition, because the volume of the household phototherapy product is small, the heat dissipation area and the heat dissipation flow rate of the heat dissipation fins are also improved to a limited extent, and the heat dissipation capacity of the household phototherapy instrument cannot be effectively improved. Part LED light source module consumption is great, designs voltage contravariant module when being supplied power by the battery, and its calorific capacity is higher usually to battery discharge current is great leads to the temperature higher, and these also need carry out effective heat dissipation.
Example 1
The overall appearance of the portable phototherapy apparatus provided in this embodiment is shown in fig. 1. The portable phototherapy apparatus has a housing formed by fastening an upper housing 110 and a lower housing 120 made of plastic, and the housing is roughly divided into a main body and a hand-held portion. The interior of the shell is of a hollow structure, so that the shell provides accommodating and mounting space for other parts of the portable phototherapy instrument and provides insulation and protection functions. It should be noted that fig. 1 is only a schematic diagram, and the appearance of the actual product may be different.
The upper housing 110 has a rectangular display mounting hole 111 opened upward in a main body portion thereof for mounting a display 330, as shown in fig. 2. The front end of the handheld part of the upper shell 110 is close to the display screen 330, and when the handheld part is held, the position is easy to be touched by a thumb, so that a button 112 is arranged at the position and used for controlling the functions of turning on and off the portable phototherapy apparatus, starting irradiation, stopping irradiation and the like, and the button 112 is made of plastic or silica gel. The end of the hand-held portion of the upper housing 110 is provided with a charging hole 113. The power control board 320 has a charging interface, into which a charging connector (e.g., a USB connector) is inserted from the charging hole 113 to charge the battery 310.
The lower housing 120 has a light-transmitting plate mounting hole 121 formed downward in the main portion thereof, and the edge of the light-transmitting plate mounting hole 121 extends downward to form a light shield, the height of the light shield is specially designed to ensure that the distance between the LED chip and the skin of the patient is the optimal treatment distance. A light-transmissive protective plate 122 is installed at the position of the light-transmissive plate installation hole 121 to provide a protective function to the LED light source 210 and facilitate surface cleaning, and the light-transmissive protective plate 122 is preferably rectangular in shape as shown in fig. 3. The light-transmitting protective plate 122 is made of quartz glass or colored glass, and the surface thereof may be coated with an antireflection film to improve the light transmittance. The ultraviolet light emitted by the LED light source 210 is transmitted through the light transmissive protective plate 122 and directed to the skin of the patient.
The front of the main body of the lower housing 120 is provided with a strip-shaped vent hole 123, and the rear is also provided with a strip-shaped vent hole 124, so that when the fan is used, airflow flows into the housing from the strip-shaped vent hole 124, and then blows out from the strip-shaped vent hole 123 to take away heat emitted by the LED light source. The heat productivity of the ultraviolet LED light source is very high, and the ventilation area of the strip-mounted ventilation holes is large, so that the heat dissipation is facilitated.
The hand-held portion of the lower housing 120 is recessed for mounting a battery, such as the battery mounting groove 127 shown in fig. 4, and is covered with a battery cover plate 128, and the battery cover plate 128 is an elongated plastic cover plate for protecting the battery 310. The inner wall of the battery mounting groove 127 is provided with vent holes, the battery generates heat when discharging, and the heat flows into the handheld part of the shell from the vent holes. The lower case 120 is provided with one vent hole at each of the front and rear sides of the battery mounting groove 127 as a heat dissipation and ventilation duct for the battery 310 and the power control board 320, such as the circular vent hole 125 and the circular vent hole 126 shown in fig. 3. These circular vents draw in cool ambient air and carry away heat from the battery 310 and the periphery of the power control board 320. Compared with the heat generated by the LED light source, the heat generated at the position is smaller, and the area of the circular vent hole is enough.
The LED light source and heat sink assembly is shown in fig. 5, which is a core module of the portable phototherapy apparatus, and is mounted in the inner cavity of the main body part of the housing, as shown in fig. 4. The assembly is mainly composed of a substrate 211, LED chips 212 arranged in an array, a semiconductor heat sink 220, and a heat sink 230.
The substrate 211 is a copper substrate or an aluminum substrate, one surface of which is attached with an LED chip 212, and the other surface of which is attached to the cooling surface of the semiconductor cooling plate 220 through a heat-conductive silicone grease or a heat-conductive silicone gel. The LED chip 212 is a chip LED or a COB integrated LED chip. The LED chip 212 faces the light transmissive protective plate 122 and the uv light is transmitted out of the housing and directed to the affected part.
The semiconductor refrigeration sheet 220 is a single-stage or multi-stage semiconductor refrigeration sheet, the heating surface of which is connected with the bottom surface of the radiator 230 through heat-conducting silicone grease or heat-conducting silicone, and the refrigeration surface of which is connected with the back surface of the substrate 211 through heat-conducting silicone grease or heat-conducting silicone. The semiconductor refrigerating sheet 220 has the following functions: by utilizing the temperature difference effect of the semiconductor refrigeration piece, the temperature difference is formed between the substrate 211 and the radiator 230, the refrigeration surface of the semiconductor refrigeration piece 220 absorbs heat more easily, and the heat of the heating surface of the semiconductor refrigeration piece 220 is transferred to the radiator 230, so that the temperature difference between the radiator 230 and the radiating air is increased, and the radiating capacity in unit area is improved.
The heat sink 230 is a heat sink made of aluminum alloy or copper alloy, and the lower surface thereof is a plane and is connected to the heating surface of the semiconductor cooling plate 220 through heat-conductive silicone grease or heat-conductive silicone adhesive. The heat sink 230 has a plurality of heat dissipation fins 231 arranged in multiple ways to increase the heat dissipation area, and the plurality of parallel heat dissipation fins 231 dissipate heat through heat exchange with air.
One heat dissipation fan, such as the fan 240 and the fan 250 shown in fig. 4, is installed at each side of the heat sink 230. The fan 250 is a low voltage dc fan, and is disposed inside the housing, and is installed between the strip-shaped ventilation holes 124 (as air intake channels) and the heat sink 230, and is as close as possible to the heat sink 230. The fan 250 draws ambient air into and blows it into the housing to provide air circulation for the heat sink 230. The fan 240 is a low-voltage dc fan, and is disposed between the strip-shaped ventilation hole 123 (as an air outlet channel) and the heat sink 230 in the housing, and is as close to the heat sink 230 as possible. The fan 240 rapidly guides hot air inside the phototherapy instrument out of the phototherapy instrument through the strip-shaped vent 123.
Repeated experiments prove that when the fan 240 adopts a fan with larger rated air volume and the fan 250 adopts a fan with smaller rated air volume, the comprehensive heat dissipation effect is better than that of the fans with the same rated air volume. It is further found that when the rated air volume of the fan 240 is 1.1 to 1.3 times of the rated air volume of the fan 250, the matching between the two is the best. Rated air volume is the maximum designed ventilation capacity of the fan under standard conditions, i.e. the volume of air passing through the fan per hour, measured in m3H is used as the reference value. Although the rated air volume of the fan 240 is larger than that of the fan 250, when they are operated simultaneously, the actual air volumes of the fan 240 and the fan 250 are the same as the front and rear fans of the same ventilation duct, and the actual air volumes are both smaller than the rated air volumes of the fans.
In alternative embodiments, the fan may employ only one high power fan for drawing air from within the enclosure, the fan being mounted at the location of fan 240 in FIG. 5.
The circuit and the control system of the portable phototherapy instrument are arranged in the shell and used for supplying power to the portable phototherapy instrument, controlling the work of the portable phototherapy instrument and the like. The circuit and control system comprises a battery 310, a power supply control board 320, a touch display screen 330, a main control board 340 and the like.
The battery 310, which is a rechargeable lithium battery, is disposed in the battery mounting groove 127 of the lower case 120. The battery 310 is connected to the power control board 320 and supplies power to the power control board 320 in the absence of mains power. The power control board 320 includes a charging circuit, a voltage stabilizing circuit, and an inverter circuit. The charging circuit is responsible for charging the battery 310, the voltage stabilizing circuit supplies power to the main control board 340 and the two fans, and the inverter circuit supplies power to the LED chip 212 and the semiconductor cooling plate 220. In alternative embodiments, the battery may not be installed and the mains power supply may be used directly, thus losing some portability but replacing a permanent endurance.
The main control board 340 is a circuit board controlled by a single chip microcomputer and is connected with the touch display screen 330 and the power control board 320. The main control board 340 has the following functions: (1) performing data communication with the touch display screen 330, receiving and executing information from the touch display screen 330, and feeding back an execution result to the touch display screen 330; (2) monitoring the voltage of the battery 310; (3) the power control board 320 is used for controlling the starting and stopping of the LED light source; (4) the start and stop of the semiconductor refrigerating sheet 220 are controlled by controlling the power control board 320; (5) the start and stop of the fan 240 and the fan 250 are controlled by controlling the power control board 320.
Example 2
The portable phototherapy apparatus provided by the embodiment is used for phototherapy of narrow parts, such as phototherapy irradiation in oral cavity and nasal cavity, and the therapeutic irradiation head needs to be designed to be smaller. The light source and heat sink assembly of such portable phototherapy apparatus is shown in fig. 6, and the core module of these portable phototherapy apparatus is installed in the housing (not shown in the figure) of the portable phototherapy apparatus.
The heat generated from the LED light source 410 is dissipated by means of a heat dissipating assembly, which is composed of a semiconductor heat sink 420, a heat transfer assembly 430, and a heat sink 440. The LED light source 410 is composed of a substrate and an array of LED chips, the substrate is a copper substrate or an aluminum substrate, one surface of the substrate is attached with the LED chips, and the other surface is attached to the refrigerating surface of the semiconductor refrigerating sheet 420 through heat-conducting silicone grease or heat-conducting silica gel. One end of the heat transfer assembly 430 is attached to the heating surface of the semiconductor chilling plate 420, and the other end of the heat transfer assembly 430 is connected with the radiator 440, so that the heat of the heating surface of the semiconductor chilling plate 420 is quickly conducted out to the radiator 440 by means of the heat transfer assembly 430, and then is dissipated to the air by the fins of the radiator 440. Preferably, the heat transfer assembly 430 employs liquid-cooled heat pipes. Because the slender heat transfer assembly is adopted, the substrate, the LED chip and the semiconductor refrigerating sheet can be more miniaturized, but the heat dissipation performance is not influenced at all.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A portable phototherapy apparatus, characterized in that the phototherapy apparatus at least comprises:
the shell assembly is a hollow structure formed by buckling a first shell and a second shell, and a light-transmitting area and a vent hole are formed in the surface of the shell assembly;
an LED light source mounted within the housing assembly and facing the optically transmissive region;
the semiconductor refrigerating sheet is attached to the back surface of the LED light source;
a control module mounted within the housing assembly for controlling operation of the phototherapy instrument.
2. The portable phototherapy instrument according to claim 1, wherein the semiconductor refrigeration sheet is a single-stage or multi-stage semiconductor refrigeration sheet.
3. The portable phototherapy instrument according to claim 1 further comprising a heat sink for dissipating heat from said semiconductor chilling plate.
4. The portable phototherapy apparatus according to claim 3 wherein said heat sink is a finned heat sink, said heat sink having a fan mounted along each side of the fin; the first fan is used for blowing air to the heat radiator, the second fan is used for sucking air from the heat radiator, and the rated air volume of the second fan is larger than that of the first fan.
5. The portable phototherapy instrument according to claim 4 wherein the rated air volume of the second fan is 1.1-1.3 times the rated air volume of the first fan.
6. The portable phototherapy instrument according to claim 3, wherein a heat transfer member is installed between said semiconductor cooling plate and said heat sink.
7. The portable phototherapy instrument of claim 1 wherein said housing assembly has a handle which is hollow and communicates with the interior of said housing assembly, said handle having a handle vent in the surface thereof.
8. The portable phototherapy instrument according to claim 7, wherein a rechargeable battery and a power control board are installed in the handle, and a charging port is provided at the tail of the handle.
9. The portable phototherapy instrument according to claim 7 wherein a power plug is connected to the tail of said handle.
10. A portable phototherapy device as claimed in claim 1, wherein said phototherapy device is provided with a display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120023478.1U CN214807927U (en) | 2021-01-06 | 2021-01-06 | Portable phototherapy instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120023478.1U CN214807927U (en) | 2021-01-06 | 2021-01-06 | Portable phototherapy instrument |
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| Publication Number | Publication Date |
|---|---|
| CN214807927U true CN214807927U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120023478.1U Active CN214807927U (en) | 2021-01-06 | 2021-01-06 | Portable phototherapy instrument |
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| CN (1) | CN214807927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115854584A (en) * | 2022-10-17 | 2023-03-28 | 深圳市嘉宇康医疗器械有限公司 | Two-stage refrigeration module and photon beauty instrument |
-
2021
- 2021-01-06 CN CN202120023478.1U patent/CN214807927U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115854584A (en) * | 2022-10-17 | 2023-03-28 | 深圳市嘉宇康医疗器械有限公司 | Two-stage refrigeration module and photon beauty instrument |
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