CN114440196A - Vehicle lamp - Google Patents
Vehicle lamp Download PDFInfo
- Publication number
- CN114440196A CN114440196A CN202111192570.1A CN202111192570A CN114440196A CN 114440196 A CN114440196 A CN 114440196A CN 202111192570 A CN202111192570 A CN 202111192570A CN 114440196 A CN114440196 A CN 114440196A
- Authority
- CN
- China
- Prior art keywords
- lamp
- outer lens
- vehicle
- heating wire
- heat generating
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000003550 marker Substances 0.000 abstract description 10
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000001723 curing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/60—Heating of lighting devices, e.g. for demisting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides a vehicle lamp capable of reducing labor and cost for installing a defroster. A vehicle marker lamp (1) according to the present invention has a heating wire (3) disposed at the peripheral edge of an outer lens (2). The heating wire (3) is disposed so as to be exposed to a lamp chamber (5) formed between the outer lens (2) and the lamp body (4). The heat-generating line (3) is formed by directly applying a metal paste (31) containing a resin component at a predetermined ratio to the outer lens (2). In addition, a control unit (9) is provided to control the heating wire (3) so as not to exceed a predetermined temperature.
Description
Technical Field
The present invention relates to a vehicle lamp in which a heat generating line for a defroster is disposed in an outer lens.
Background
Conventionally, there is known a vehicle lamp in which a heat generating line is disposed on an outer lens to melt snow accumulated on a surface of the lamp. For example, patent document 1 proposes a snow melting structure in which a wire heater is formed by spraying a conductive paste and a sealant from a dispenser, covering the conductive paste with the sealant, and applying the conductive paste to a lamp lens. Patent document 2 proposes a snow melting structure in which a conductive paste is transferred to a lamp lens and the transferred conductive paste is covered with a resist. Patent document 3 proposes a vehicle lamp in which a heating element is provided on an inner panel and the inner panel is attached to a lamp body.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2008-52920
Patent document 2: japanese patent laid-open publication No. 2010-21121
Patent document 3: japanese patent laid-open No. 2008-108646
Disclosure of Invention
Problems to be solved by the invention
However, according to the inventions of patent documents 1 to 3, since it is necessary to cover the conductive member with a sealant, a resist, or the like, or to sandwich the inner panel, there is a problem that it takes time and labor to install the defroster, and the manufacturing cost is high.
Accordingly, an object of the present invention is to provide a vehicle lamp that can reduce the time and effort for installing a defroster and the cost.
Means for solving the problems
In order to solve the above problems, a vehicle lamp according to the present invention is characterized in that a heat generating line is disposed on an outer lens, and the heat generating line is formed by directly applying a metal paste containing a resin component at a predetermined ratio to the outer lens.
At this time, at least a part of the heat generating wire is exposed to a lamp chamber formed between the outer lens and the lamp body.
The heat generating wire is disposed at the peripheral edge of the outer lens.
Further, the resin component is a thermosetting resin.
In addition, the vehicle lamp includes a control unit that controls the heat generating wire so as not to exceed a predetermined temperature.
According to the vehicle lamp of the present invention, since the metal paste containing the resin component is directly applied to the outer lens, the arrangement of the metal paste to the outer lens is easy, and the durability of the heat generating wire is provided by the resin component. Therefore, it is not necessary to cover the heating wire, and as a result, the manufacturing cost can be reduced by saving the labor for covering the heating wire.
Drawings
Fig. 1 is a schematic diagram of a vehicle equipped with a vehicle marker lamp showing an embodiment of the present invention.
Fig. 2 (a) is a front view of the vehicular marker lamp, and fig. 2 (b) is a sectional view taken along line a-a.
Fig. 3 is a schematic view showing a region where a heat generating line is disposed.
Fig. 4 (a) is an explanatory view showing a state where the metal paste is applied to the outer lens of the vehicular marker lamp, and fig. 4 (b) is an enlarged view of a main portion showing a structure of the applied metal paste.
Description of the reference numerals
1: a vehicular marker light; 2: an outer lens (2 a: a fusion pin); 3: a heating wire (3 a: annular part, 3 b: power supply part); 4: a lamp body; 5: a lamp chamber; 6: a light source; 7: a substrate; 8: a temperature sensor; 9: a control unit; 11: a dispenser; 31: a metal paste; 51: a vehicle body; s: an area; d: the thickness of the wiring; w: the width of the wiring.
Detailed Description
Hereinafter, an embodiment of the present invention embodied as a vehicle marker lamp such as a brake lamp, a backup lamp, and a side turn signal lamp will be described with reference to the drawings. The present invention can be suitably used particularly for a marker lamp that generates less heat, but can also be used for a headlamp or the like.
The vehicular marker lamp 1 shown in fig. 1 and 2 includes a lamp body 4 attached to a vehicle body 51, an outer lens 2 made of a transparent resin material such as polycarbonate or acrylic, a heat generating wire 3 functioning as a defroster for melting snow 52, a temperature sensor 8 for measuring the temperature of the heat generating wire 3, and a control unit 9 for controlling power supply to the heat generating wire 3 based on the measurement result of the temperature sensor 8. A lamp chamber 5 is formed between the outer lens 2 and the lamp body 4, and a substrate 7 on which a light source 6 such as an LED is mounted is disposed in the lamp chamber 5.
As shown in fig. 2 (a), a heat generating line 3 is disposed at the peripheral edge of the outer lens 2. The heating wire 3 includes an annular portion 3a arranged substantially annularly along the peripheral edge of the outer lens 2, and a power supply portion 3b provided at an end of the annular portion 3 a. The heating wire 3 is provided so as to be exposed to the lamp chamber side on the surface of the outer lens 2, and a welding leg 2a is formed so as to protrude so as to surround the periphery of the heating wire 3.
The heating wire 3 is disposed in a region S (see fig. 3) that does not interfere with the appearance and light distribution performance of the vehicle marker lamp 1. The region S is within 2cm from the outer periphery of the outer lens 2, and overlaps with a region where the outer lens 2 and the lamp body 4 are welded. When the outer lens 2 and the lamp body 4 are heat-plate welded and fastened, the welding leg 2a is heated to about 300 ℃, and the transfer temperature from the welding leg 2a to the peripheral resin portion is about 90 ℃. However, even at the time of welding, the temperature of the region S is suppressed to a temperature (120 ℃ or lower) at which the heat generating wire 3 does not melt.
As shown in fig. 4, the heat generating line 3 is formed by supplying a metal paste 31 from a dispenser 11 of four shafts to the outer lens 2 and directly applying the metal paste 31 to the outer lens 2. The metal paste 31 is cured by heat at 80 to 130 ℃, and functions as the heat-generating wire 3 after being cured. By setting the heat curing temperature of the metal paste 31 to 80 to 130 ℃, coating can be performed while maintaining the durability of the outer lens 2 of the resin base material. The wiring thickness D of the heating wire 3 is preferably 0.02mm to 1mm, and the wiring width W is preferably 0.5mm to 5 mm.
The metal paste 31 contains (contains) 50 to 80 wt% of a metal and 3 wt% or more of a resin in terms of a weight ratio before curing.
The metal contained in the alloy preferably has a resistivity of 3.0X 10 at room temperature-8Metals of not more than Ω · m, such as silver and copper. Alternatively, as long as the above-mentioned condition of resistivity (3.0 × 10) is satisfied-8Ω · m or less), a carbon material (carbon nanotube (CNT), graphite, or the like) other than a metal, a conductive polymer, or the like may be selected. In addition, the size of the metal particles of the metal paste 31 is preferably 10 μm or less in the longest portion so that a desired heat generating line 3 can be applied by the dispenser 11.
The resin contained may be selected from polyester, epoxy resin, polyurethane, and other resins that also serve as a protective film. By containing these resin components in the metal paste 31, sufficient heat resistance and durability such as moisture resistance can be imparted to the heat-generating wire 3 without separately providing a coating film on the heat-generating wire 3.
The control unit 9 supplies 25W or more of electric power necessary for melting snow to the heat generating wire 3. Further, the power supplied to the heat-generating wire 3 is controlled so that the temperature of the heat-generating wire 3 is 80 ℃ or lower based on the temperature information input from the temperature sensor 8. The control unit 9 can also control the supply power to be lower than 25W in the case where the temperature of the heat generating wire 3 exceeds 80 ℃.
Next, the test results relating to the metal paste 31 of the present application are described below. In these tests, silver paste and copper paste having a film thickness of 20 μm or more after curing were used.
(Heat resistance test)
The cured metal paste 31 was subjected to a heat resistance test at 80 to 110 ℃ for 1000 hours. When the cutting line is 1mm2The checkerboard adhesion of 100 cells showed no peeling, and the volume resistivity was within. + -. 10% from that before the test.
(moisture resistance test)
The metal paste 31 after curing was subjected to a moisture resistance test at 60 ℃ and 95% humidity for 1000 hours. Cutting into 1mm2The checkerboard adhesion of 100 cells showed no peeling, and the volume resistivity was within. + -. 10% from that before the test.
According to the vehicular marker lamp 1 configured as described above, durability such as heat resistance and moisture resistance is provided without providing a protective film made of resin such as PET and PC, a paint-type protective film, or the like covering the heat generating line 3, and therefore, labor for providing a protective film when attaching a defroster can be saved, and manufacturing cost can be reduced. Further, since the temperature sensor 8 and the control unit 9 are provided, the durability can be further improved by maintaining the heat generating wire 3 at an appropriate temperature.
The present invention is not limited to the above-described embodiments, and the shape and configuration of each part may be appropriately modified and implemented without departing from the scope of the present invention. For example, a current or voltage sensor may be provided instead of the temperature sensor 8, and the control unit 9 may control the current value or the voltage value within a predetermined range so that the heat generating line 3 is 80 ℃. In addition, the movable shaft of the distributor 11 may be increased or decreased as appropriate.
Claims (5)
1. A vehicle lamp having a heat generating line arranged on an outer lens,
the heating wire is formed by directly applying a metal paste containing a resin component at a predetermined ratio to the outer lens.
2. The vehicular lamp according to claim 1,
at least a part of the heating wire is exposed to a lamp chamber formed between the outer lens and the lamp body.
3. The vehicular lamp according to claim 1 or 2,
the heating wire is disposed at a peripheral edge portion of the outer lens.
4. A lamp for a vehicle as claimed in any one of claims 1 to 3,
the resin component is a resin that is thermally cured at a predetermined temperature.
5. A lamp for a vehicle as claimed in any one of claims 1 to 4,
the vehicle lamp includes a control unit that controls the heat generating wire so as not to exceed a predetermined temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020182525A JP2022072855A (en) | 2020-10-30 | 2020-10-30 | Vehicle lamp fitting |
| JP2020-182525 | 2020-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114440196A true CN114440196A (en) | 2022-05-06 |
Family
ID=81362659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111192570.1A Pending CN114440196A (en) | 2020-10-30 | 2021-10-13 | Vehicle lamp |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022072855A (en) |
| CN (1) | CN114440196A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07272686A (en) * | 1994-03-30 | 1995-10-20 | Toshiba Lighting & Technol Corp | Electroconductive heat-emitting adhesive, low-pressure mercury vapor discharge lamp using it, and liquid crystal display device |
| JP2000216439A (en) * | 1999-01-22 | 2000-08-04 | Sanyo Electric Co Ltd | Chip-type light emitting element and its manufacture |
| JP2005123657A (en) * | 2005-01-31 | 2005-05-12 | Sanyo Electric Co Ltd | Chip-type light emitting device and its manufacturing method |
| US20060011598A1 (en) * | 2004-07-16 | 2006-01-19 | Koito Manufacturing Co., Ltd. | Vehicular lamp |
| US20070181565A1 (en) * | 2006-01-11 | 2007-08-09 | Ichikoh Industries, Ltd. | Parts for vehicles and line heater unit for snow-melting structure part thereof |
| JP2008052920A (en) * | 2006-08-22 | 2008-03-06 | Ichikoh Ind Ltd | Vehicular lighting fixture and wire heater dispenser in vehicular lighting fixture |
| CN101392882A (en) * | 2007-09-20 | 2009-03-25 | 株式会社小糸制作所 | Vehicle lighting device |
| CN103740295A (en) * | 2013-12-12 | 2014-04-23 | 东莞市广海大橡塑科技有限公司 | Conductive bonding material |
| CN106186718A (en) * | 2016-08-22 | 2016-12-07 | 江苏华尚汽车玻璃工业有限公司 | A kind of utilize silver slurry do line with heating function, receive signal vehicle glass production technology |
| JP2017107646A (en) * | 2015-12-07 | 2017-06-15 | 株式会社小糸製作所 | Vehicular lighting fixture including heat source for heating outer cover |
| CN106998598A (en) * | 2017-05-18 | 2017-08-01 | 韩恺 | A kind of intelligent heating body, its preparation method and application |
-
2020
- 2020-10-30 JP JP2020182525A patent/JP2022072855A/en active Pending
-
2021
- 2021-10-13 CN CN202111192570.1A patent/CN114440196A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07272686A (en) * | 1994-03-30 | 1995-10-20 | Toshiba Lighting & Technol Corp | Electroconductive heat-emitting adhesive, low-pressure mercury vapor discharge lamp using it, and liquid crystal display device |
| JP2000216439A (en) * | 1999-01-22 | 2000-08-04 | Sanyo Electric Co Ltd | Chip-type light emitting element and its manufacture |
| US20060011598A1 (en) * | 2004-07-16 | 2006-01-19 | Koito Manufacturing Co., Ltd. | Vehicular lamp |
| JP2005123657A (en) * | 2005-01-31 | 2005-05-12 | Sanyo Electric Co Ltd | Chip-type light emitting device and its manufacturing method |
| US20070181565A1 (en) * | 2006-01-11 | 2007-08-09 | Ichikoh Industries, Ltd. | Parts for vehicles and line heater unit for snow-melting structure part thereof |
| JP2008052920A (en) * | 2006-08-22 | 2008-03-06 | Ichikoh Ind Ltd | Vehicular lighting fixture and wire heater dispenser in vehicular lighting fixture |
| CN101392882A (en) * | 2007-09-20 | 2009-03-25 | 株式会社小糸制作所 | Vehicle lighting device |
| CN103740295A (en) * | 2013-12-12 | 2014-04-23 | 东莞市广海大橡塑科技有限公司 | Conductive bonding material |
| JP2017107646A (en) * | 2015-12-07 | 2017-06-15 | 株式会社小糸製作所 | Vehicular lighting fixture including heat source for heating outer cover |
| CN106186718A (en) * | 2016-08-22 | 2016-12-07 | 江苏华尚汽车玻璃工业有限公司 | A kind of utilize silver slurry do line with heating function, receive signal vehicle glass production technology |
| CN106998598A (en) * | 2017-05-18 | 2017-08-01 | 韩恺 | A kind of intelligent heating body, its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022072855A (en) | 2022-05-17 |
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