CN113483288A - LED working lamp - Google Patents
LED working lamp Download PDFInfo
- Publication number
- CN113483288A CN113483288A CN202110783098.2A CN202110783098A CN113483288A CN 113483288 A CN113483288 A CN 113483288A CN 202110783098 A CN202110783098 A CN 202110783098A CN 113483288 A CN113483288 A CN 113483288A
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- Prior art keywords
- light
- transmitting plate
- shell
- led
- reflector
- 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.)
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- 238000009413 insulation Methods 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 2
- 239000003595 mist Substances 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 12
- 239000012530 fluid Substances 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V29/10—Arrangement of heat-generating components to reduce thermal damage, e.g. by distancing heat-generating components from other components to be protected
-
- 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
- F21V31/00—Gas-tight or water-tight arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to an LED working lamp which comprises a shell, a substrate, a power supply assembly, an LED lamp, a first light-transmitting plate and a second light-transmitting plate, wherein the substrate is arranged in the shell, the LED lamp is connected to the substrate, the first light-transmitting plate covers an opening of the shell so as to seal an installation cavity, the second light-transmitting plate is arranged in the installation cavity and is close to the first light-transmitting plate, the second light-transmitting plate divides the upper space and the lower space of the installation cavity into relatively independent cavities, and the upper space forms a heat insulation cavity capable of thermally insulating the lower space from the environment outside the first light-transmitting plate. The LED lamp heat insulation structure is simple and reasonable in structure, gas in the heat insulation cavity does not flow, and heat generated by the LED lamp in the lower space is isolated from the first light-transmitting plate, so that water mist is prevented from being formed on the first light-transmitting plate; the second light-transmitting plate forms a small amount of heat transfer between the heat-insulating cavity and the lower space, and the heat transfer prevents the second light-transmitting plate from contacting the environment with excessive temperature difference and does not form water mist.
Description
Technical Field
The invention relates to the technical field of lighting lamps, in particular to an LED working lamp.
Background
Currently, LED lighting fixtures have already occupied a large market. An LED lamp generally includes a housing, an LED bead disposed in the housing, and a transparent or translucent cover covering a light emitting surface of the lamp. When the LED lamp uses in normal atmospheric temperature environment or high temperature environment, each item function is more normal, but uses in low temperature environment as the LED lamp, especially the temperature is low to the back below 0, the luminous production of heat of LED lamp pearl for the temperature in the casing is very big with external environment temperature deviation, this air that just leads to being close to translucent cover department in the casing easily receives cold and hazes, not only seriously influences illuminating effect and user experience and feels, and if the water droplet that condenses drips on electronic component, still can influence electrical safety moreover.
In order to solve the above problems, the current treatment method on the market removes the mist by heating or guiding the airflow. For example, the chinese utility model patent "an anti-fogging ceiling light" (application No. CN202020749153.7) with publication No. CN211625017U discloses a structure, which includes a lampshade, a light-gathering plate fixed on the inner wall of the lampshade, a plurality of ribs arranged on the outer wall of one side of the light-gathering plate, the cross section of the ribs is triangular, a light-transmitting plate fixed on the inner wall of the lampshade, the light-transmitting plate and the light-gathering plate are tightly attached together, a ventilation groove is arranged on the outer wall of the light-transmitting plate near one side of the light-transmitting plate, a hydrophilic film coating layer is fixed on the outer wall of one side of the light-transmitting plate, and a ventilation hole is arranged on the outer wall of the light-transmitting plate at the middle position and connected with the ventilation groove. Among the above-mentioned scheme, the solar panel can be with light gathering on the light-passing board, and the temperature of light-passing board rises with higher speed, and vapor is difficult to condense under high temperature, and hydrophilic group on the hydrophilic coating film layer tiling becomes the water film of easy evaporation when can making vapor condense to can form warm air current layer, prevent that vapor from being close to, in order to play the defogging effect.
Above-mentioned scheme still need be equipped with the fan, makes the air current flow to eliminate the fogging problem on the light-transmitting plate, overall structure is complicated, and manufacturing cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides an LED working lamp which is simple and reasonable in structure and avoids fogging by heat isolation.
The technical scheme adopted by the invention for solving the technical problems is as follows: an LED worklight comprising:
the shell is provided with a mounting cavity, and the top of the mounting cavity is provided with an opening;
the substrate is arranged in the mounting cavity;
the power supply assembly is arranged in the shell and is respectively connected with the power supply and the substrate through electric signals;
the LED lamp is connected to the substrate and arranged towards the opening of the shell;
a first light-transmitting plate covering the opening of the housing to close the mounting chamber;
it is characterized by also comprising:
the second light-passing board is located just be close to first light-passing board and arrange in the installation cavity, the upper portion space and the lower part space separation of installation cavity become relatively independent cavity with the second light-passing board, base plate, LED lamp and power supply module all locate in the lower part space, the upper portion space forms and can carry out the isolated thermal insulation chamber of heat with the environment outside lower part space and the first light-passing board.
Preferably, a sealing ring arranged close to the edge of the upper space is arranged in the upper space, the top of the sealing ring is elastically abutted against the lower wall surface of the first light-transmitting plate, and the bottom of the sealing ring is elastically abutted against the upper wall surface of the second light-transmitting plate. The sealing ring is used for improving the sealing performance of the heat insulation cavity so as to improve the heat insulation effect.
Further preferably, the top edge of casing is provided with the recess of arranging along circumference, the cross section of sealing washer is the n-shaped structure, just the first vertical part of n-shaped structure is planted in the recess, the horizontal part of n-shaped structure strides across the inward flange at casing top and arranges and the top supports and leans on first light-passing board, the second vertical part of n-shaped structure is pressed close to shells inner wall and the lower extreme supports and leans on the second light-passing board. The top wall of the shell on the periphery of the groove is higher than the top wall of the shell on the inner side of the groove, the top wall of the shell on the periphery of the groove is abutted to the lower wall surface of the first light-transmitting plate, and an assembly gap for the transverse part of the n-shaped structure to penetrate is formed between the top wall of the shell on the inner side of the groove and the first light-transmitting plate. The structures are mutually matched, so that the fluid in the heat insulation cavity is prevented from flowing, the heat insulation effect is improved, and the generation of fog is avoided.
The LED working lamp also comprises a reflector, wherein the reflector is arranged between the second reflector and the substrate, and the reflector is gradually arranged from the middle to the edge from bottom to top in an inclined manner. The LED lamp is arranged at the central part of the upper wall surface of the substrate, the bottom edge of the reflector extends downwards to form a surrounding edge surrounding the periphery of the LED lamp, and the top edge of the reflector is arranged close to the lower wall surface of the second reflector. The structure is beneficial to improving the illumination brightness and the illumination range.
Preferably, the inner wall surface of the top of the shell is partially recessed to form a supporting table, the top edge of the reflector is supported on the supporting table, and the edge of the second reflector is pressed on the top edge of the reflector. The structure is favorable for being matched with the sealing ring structure, further improves the isolation effect between the lower space and the heat insulation cavity, and avoids heat and fluid transmission, thereby avoiding water mist generation.
In each scheme, the bottom wall of the shell is partially recessed to form an accommodating cavity communicated with the lower space and used for mounting a power supply assembly, a control switch connected with an electric signal of the power supply assembly is arranged on the outer bottom wall of the shell, and an opening for a power line to pass through is further formed in the bottom wall of the shell.
In order to facilitate assembly, the LED working lamp further comprises a mounting frame, the mounting frame is arranged around the top edge of the shell and is pressed on the first light-transmitting plate, and the mounting frame is detachably locked on the shell through screws.
In the invention, the height of the heat-insulating cavity in the vertical direction is 1-15 mm, preferably 2-6 mm, and when the height is too high, water mist can still be generated on the inner surface of the first light-transmitting plate due to the large amount of air in the heat-insulating cavity; when the height is too small, the heat insulation effect is poor, and water mist may be generated on the first light-transmitting plate and/or the second light-transmitting plate; the height of the insulating chamber is limited within the above range to ensure a proper insulating effect and an amount of air insufficient to generate mist, thereby preventing generation of mist.
Compared with the prior art, the invention has the advantages that: the LED lamp is simple and reasonable in structure, the second light-transmitting plate is arranged at a position close to the first light-transmitting plate to form the heat-insulating cavity, and gas in the heat-insulating cavity does not flow, so that heat generated by the LED lamp in the lower space is isolated from the first light-transmitting plate to avoid water mist from being formed on the first light-transmitting plate; meanwhile, a small amount of heat transfer is formed between the heat insulation cavity and the lower space of the second light-transmitting plate, and the second light-transmitting plate is prevented from contacting the environment with too large temperature difference due to the partial heat transfer, so that water mist is not formed.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic bottom view of FIG. 1;
FIG. 3 is a cross-sectional view of an embodiment of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a cross-sectional view of a seal ring in an embodiment of the invention;
fig. 6 is an exploded view of an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 6, the LED working lamp of the present embodiment includes a housing 1, a substrate 2, a power supply assembly (not shown), an LED lamp 3, a first transparent plate 4, a second transparent plate 5, and an installation frame 6.
The housing 1 has a mounting chamber 10, and the top of the mounting chamber 10 has an opening 100. The substrate 2 is an aluminum substrate and is horizontally arranged in the mounting cavity 10. The power supply assembly is arranged in the shell 1 and is respectively connected with the power supply and the substrate 2 through electric signals. The LED lamp 3 comprises a plurality of lamp beads, and the LED lamp 3 is connected on the substrate 2 and is arranged towards the opening 100 of the shell 1. The first light-transmitting plate 4 covers the opening 100 of the housing 1 to enclose the installation chamber 10. The mounting frame 6 is arranged around the top edge of the housing 1 and pressed on the first light-transmitting plate 4, and the mounting frame 6 is detachably locked on the housing 1 through screws 7.
The second light-transmitting plate 5 of this embodiment is arranged in the installation cavity 10 and is close to the first light-transmitting plate 4, the upper space 101 and the lower space 102 of the installation cavity 10 are separated into relatively independent cavities by the second light-transmitting plate 5, the substrate 2, the LED lamp 3 and the power supply assembly are arranged in the lower space 102, and the upper space 101 forms a heat insulation cavity capable of thermally insulating the lower space 102 from the environment outside the first light-transmitting plate 4.
A sealing ring 8 arranged close to the edge of the upper space 101 is arranged in the upper space, the top of the sealing ring 8 is elastically abutted against the lower wall surface of the first light-transmitting plate 4, and the bottom of the sealing ring 8 is elastically abutted against the upper wall surface of the second light-transmitting plate 5. The sealing ring 8 is used for improving the sealing performance of the heat insulation cavity so as to improve the heat insulation effect.
The edge of the top of the case 1 of the present embodiment is provided with a groove 11 arranged along the circumferential direction, the cross section of the seal ring 8 is n-shaped, and the first vertical portion 81 of the n-shaped structure is inserted into the groove 11, the lateral portion 83 of the n-shaped structure is arranged across the inner edge of the top of the case 1 and the top is abutted against the first light-transmitting plate 4, the second vertical portion 82 of the n-shaped structure is abutted against the inner wall of the case 1 and the lower end is abutted against the second light-transmitting plate 5. The top wall of the casing 1 at the periphery of the groove 11 is higher than the top wall of the casing 1 at the inner side of the groove 11, the top wall of the casing 1 at the periphery of the groove 11 is abutted against the lower wall surface of the first light-transmitting plate 4, and an assembly gap for the transverse part 83 of the n-shaped structure to pass through is formed between the top wall of the casing 1 at the inner side of the groove 11 and the first light-transmitting plate 4. The structures are mutually matched, so that the fluid in the heat insulation cavity is prevented from flowing, the heat insulation effect is improved, and the generation of fog is avoided.
The LED working lamp of this embodiment still includes reflector panel 9, and reflector panel 9 is located between second reflector panel 5 and base plate 2, and reflector panel 9 inclines gradually from bottom to top from middle part to edge and arranges. The LED lamp 3 is arranged at the central part of the upper wall surface of the substrate 2, the bottom edge of the reflector 9 extends downwards to form a surrounding edge 91 surrounding the periphery of the LED lamp 3, and the top edge of the reflector 9 is arranged close to the lower wall surface of the second reflector 5. The structure is beneficial to improving the illumination brightness and the illumination range.
The inner wall surface of the top of the shell 1 is partially recessed to form a support table 12, the top edge of the reflector 9 is supported on the support table 12, and the edge of the second reflector 5 is pressed on the top edge of the reflector 9. The structure is beneficial to being matched with the structure of the sealing ring 8, the isolation effect between the lower space 102 and the heat insulation cavity is further improved, heat and fluid transmission are avoided, and therefore water mist is avoided.
In the embodiment, the height of the heat insulation cavity in the vertical direction is 1-15 mm, preferably 2-6 mm, and when the height is too high, water mist can still be generated on the inner surface of the first light-transmitting plate 4 due to the large amount of air in the heat insulation cavity; when the height is too small, the heat insulation effect is poor, and water mist may be generated on the first transparent plate 4 and/or the second transparent plate 5; the height of the insulating chamber is limited within the above range to ensure a proper insulating effect and an amount of air insufficient to generate mist, thereby preventing generation of mist.
The bottom wall of the casing 1 is partially recessed to form an accommodating cavity 103 which is communicated with the lower space 102 and used for mounting a power supply assembly, a control switch 13 which is electrically connected with the power supply assembly is arranged on the outer bottom wall of the casing 1, and an opening 14 for a power line to pass through is further formed in the bottom wall of the casing 1.
In this embodiment, the second transparent plate 2 is disposed near the first transparent plate 4 to form a heat-insulating chamber, and the gas in the heat-insulating chamber does not flow, so that the heat generated by the LED lamp 3 in the lower space 102 is isolated from the first transparent plate 4 to prevent the formation of water mist on the first transparent plate 4; meanwhile, the second transparent plate 5 forms a small amount of heat transfer between the heat insulation cavity and the lower space 102, and the heat transfer prevents the second transparent plate 5 from contacting the environment with excessive temperature difference and does not form water mist.
Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.
Claims (10)
1. An LED worklight comprising:
the shell is provided with a mounting cavity, and the top of the mounting cavity is provided with an opening;
the substrate is arranged in the mounting cavity;
the power supply assembly is arranged in the shell and is respectively connected with the power supply and the substrate through electric signals;
the LED lamp is connected to the substrate and arranged towards the opening of the shell;
a first light-transmitting plate covering the opening of the housing to close the mounting chamber;
it is characterized by also comprising:
the second light-passing board is located just be close to first light-passing board and arrange in the installation cavity, the upper portion space and the lower part space separation of installation cavity become relatively independent cavity with the second light-passing board, base plate, LED lamp and power supply module all locate in the lower part space, the upper portion space forms and can carry out the isolated thermal insulation chamber of heat with the environment outside lower part space and the first light-passing board.
2. The LED worklight of claim 1, characterized in that: and a sealing ring arranged close to the edge of the upper space is arranged in the upper space, the top of the sealing ring is elastically abutted against the lower wall surface of the first light-transmitting plate, and the bottom of the sealing ring is elastically abutted against the upper wall surface of the second light-transmitting plate.
3. The LED worklight of claim 2, characterized in that: the top edge of casing is provided with the recess of arranging along circumference, the cross section of sealing washer is the n-shaped structure, just the first vertical section of n-shaped structure is planted in the recess, the horizontal part of n-shaped structure strides across the inward flange at casing top and arranges and the top supports and leans on first light-passing board, shells inner wall and lower extreme are pressed close to the second vertical section of n-shaped structure and support and lean on the second light-passing board.
4. The LED worklight of claim 3, characterized in that: the top wall of the shell on the periphery of the groove is higher than the top wall of the shell on the inner side of the groove, the top wall of the shell on the periphery of the groove is abutted to the lower wall surface of the first light-transmitting plate, and an assembly gap for the transverse part of the n-shaped structure to penetrate is formed between the top wall of the shell on the inner side of the groove and the first light-transmitting plate.
5. The LED work lamp according to any one of claims 1 to 4, wherein: the reflector is arranged between the second reflector and the substrate and is gradually arranged from the middle to the edge from bottom to top in an inclined mode.
6. The LED worklight of claim 5, characterized in that: the LED lamp is arranged at the central part of the upper wall surface of the substrate, the bottom edge of the reflector extends downwards to form a surrounding edge surrounding the periphery of the LED lamp, and the top edge of the reflector is arranged close to the lower wall surface of the second reflector.
7. The LED worklight of claim 6, characterized in that: the inner wall surface of the top of the shell is partially recessed to form a supporting table, the top edge of the reflector is supported on the supporting table, and the edge of the second reflector is pressed on the top edge of the reflector.
8. The LED work lamp according to any one of claims 1 to 4, wherein: the partial recessed holding chamber that forms and be linked together and be used for installing power supply module with the lower part space of diapire of casing, be provided with the control switch who is connected with power supply module signal of telecommunication on the outer diapire of casing, still open the opening that supplies the power cord to pass on the casing diapire.
9. The LED work lamp according to any one of claims 1 to 4, wherein: still include the installing frame, this installing frame centers on the top edge of casing arranges and presses and hold on first light-passing board, the detachable locking of installing frame is on the casing.
10. The LED work lamp according to any one of claims 1 to 4, wherein: the height of the heat insulation cavity in the vertical direction is 1-15 mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110783098.2A CN113483288A (en) | 2021-07-12 | 2021-07-12 | LED working lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110783098.2A CN113483288A (en) | 2021-07-12 | 2021-07-12 | LED working lamp |
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CN113483288A true CN113483288A (en) | 2021-10-08 |
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CN202110783098.2A Pending CN113483288A (en) | 2021-07-12 | 2021-07-12 | LED working lamp |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203433257U (en) * | 2013-09-16 | 2014-02-12 | 北京蓝卡软件技术有限公司 | Multistage anti-fog cold chamber |
CN204879814U (en) * | 2015-08-25 | 2015-12-16 | 深圳和而泰智能控制股份有限公司 | A LED module for illumination of high temperature cavity and high temperature feeding device thereof |
CN105822976A (en) * | 2016-05-23 | 2016-08-03 | 浙江金业汽车部件有限公司 | Vehicle rear combined lamp |
CN205824855U (en) * | 2016-06-08 | 2016-12-21 | 杭州华普永明光电股份有限公司 | Led lamp |
CN109751540A (en) * | 2019-03-07 | 2019-05-14 | 深圳和而泰智能控制股份有限公司 | A kind of LED module and high-temperature heating case |
CN209587936U (en) * | 2018-12-05 | 2019-11-05 | 昊晟精密塑模(太仓)有限公司 | A kind of car headlamp |
-
2021
- 2021-07-12 CN CN202110783098.2A patent/CN113483288A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203433257U (en) * | 2013-09-16 | 2014-02-12 | 北京蓝卡软件技术有限公司 | Multistage anti-fog cold chamber |
CN204879814U (en) * | 2015-08-25 | 2015-12-16 | 深圳和而泰智能控制股份有限公司 | A LED module for illumination of high temperature cavity and high temperature feeding device thereof |
CN105822976A (en) * | 2016-05-23 | 2016-08-03 | 浙江金业汽车部件有限公司 | Vehicle rear combined lamp |
CN205824855U (en) * | 2016-06-08 | 2016-12-21 | 杭州华普永明光电股份有限公司 | Led lamp |
CN209587936U (en) * | 2018-12-05 | 2019-11-05 | 昊晟精密塑模(太仓)有限公司 | A kind of car headlamp |
CN109751540A (en) * | 2019-03-07 | 2019-05-14 | 深圳和而泰智能控制股份有限公司 | A kind of LED module and high-temperature heating case |
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Application publication date: 20211008 |