CN109915785B - Vehicle lamp - Google Patents
Vehicle lamp Download PDFInfo
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- CN109915785B CN109915785B CN201811222956.0A CN201811222956A CN109915785B CN 109915785 B CN109915785 B CN 109915785B CN 201811222956 A CN201811222956 A CN 201811222956A CN 109915785 B CN109915785 B CN 109915785B
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- transceiver
- electromagnetic wave
- wave transmission
- transmission wall
- cover lens
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Traffic Control Systems (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides a vehicle lamp capable of transmitting and receiving a large amount of data between a communication device outside a vehicle. A vehicle lamp (1) is provided with lamps (5A-5C) in a lamp chamber (4) between a lamp body (2) and a cover lens (3), a transceiver (8) for performing data communication based on electromagnetic waves with communication equipment outside the vehicle is arranged in the lamp chamber (4), a communication window (6) is arranged on the cover lens (3) at a position corresponding to the transceiver (8), and the electromagnetic waves passing through the communication window (6) penetrate through a wall, so that high-speed data communication is performed between the external communication equipment and the transceiver (8).
Description
Technical Field
The present invention relates to a vehicle lamp capable of quickly transmitting and receiving a large amount of data to and from the outside of a vehicle.
Background
Conventionally, a technique for transmitting and receiving data to and from the outside of a vehicle by using a lamp provided in the vehicle is known. For example, patent document 1 describes the following vehicle lamp: the tail lamp is provided with a high-frequency modulation unit for controlling the lighting of the light source at a high frequency which cannot be recognized by human vision, and the tail lamp is used for transmitting data to a following vehicle by lighting the tail lamp with the lighting current after the high-frequency modulation.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2006-130996
Disclosure of Invention
Problems to be solved by the invention
However, in recent years, with the development of the automatic driving technique, there has been an increasing demand for constructing a high-quality entertainment space and a working space in a vehicle cabin, which allow high-quality movies to be enjoyed and worked, so that the movie can be comfortably used as in a room or an office even while moving. In order to provide such an in-vehicle environment, a configuration capable of quickly transmitting and receiving a large amount of data between the inside of the vehicle compartment and the outside of the vehicle without pressure is required.
However, the vehicle lamp disclosed in patent document 1 has a problem that a signal (data) is transmitted over a wide range, and if the amount of data is large, it takes a long time to transmit and receive the signal.
Accordingly, an object of the present invention is to provide a vehicle lamp capable of quickly transmitting and receiving a large amount of data to and from the outside of a vehicle.
Means for solving the problems
In order to solve the above-described problems, a vehicle lamp according to the present invention is a vehicle lamp in which a light source is provided in a lamp chamber between a lamp body and a cover lens, wherein a communication window through which electromagnetic waves pass is formed in a part of the cover lens, a transceiver for performing data communication by electromagnetic waves with a communication device outside the vehicle via the communication window is provided in the lamp chamber, and the communication window includes an electromagnetic wave transmission wall that is substantially perpendicular to a central axis of the transceiver.
Preferably, the communication window portion includes a positioning portion for disposing a communication device outside the vehicle at a position facing the transceiver.
Preferably, the electromagnetic wave transmission wall of the communication window portion is formed in a symmetrical shape with respect to an intersection point of the electromagnetic wave transmission wall and a central axis of the transceiver. In one embodiment of the present invention, the electromagnetic wave transmission wall has a lens shape for concentrating the electromagnetic wave and receiving the electromagnetic wave by the transceiver, or a lens shape for suppressing the spread of the electromagnetic wave transmitted by the transceiver and forming a parallel beam. In addition, a reflector that exhibits the same optical function may be provided in the communication window.
Here, the electromagnetic wave transmission wall may be formed integrally with the cover lens from a transparent resin material. Alternatively, the electromagnetic wave transmission wall may be formed separately from the cover lens, a window hole may be formed in the cover lens, and the electromagnetic wave transmission wall may be bonded to the cover lens so as to seal the window hole.
In addition, as a preferred embodiment, the electromagnetic wave transmission wall is provided with a shielding portion for making the transceiver less visible from the front of the cover lens.
Preferably, a reflector is provided in the lamp chamber, which reflects electromagnetic waves transmitted by the transceiver or electromagnetic waves to be received by the transceiver.
Effects of the invention
According to the vehicle lamp of the present invention, the electromagnetic wave transmission wall is provided in the communication window portion covering the lens so as to be substantially perpendicular to the optical axis of the transceiver, and data communication between the communication device outside the vehicle and the transceiver in the lamp room is performed via the electromagnetic wave transmission wall.
Drawings
Fig. 1 is a front view showing a vehicle and a headlamp according to an embodiment of the present invention.
Fig. 2 is a schematic view showing a communication window portion of the headlamp.
Fig. 3 is a schematic view showing a modification of the communication window portion.
Fig. 4 is a schematic view showing the electromagnetic wave transmission wall of the communication window.
Fig. 5 is a schematic diagram showing the arrangement of the transceiver with respect to the electromagnetic wave transmission wall.
Fig. 6 is a schematic view showing the surface treatment of the electromagnetic wave transmission wall.
Fig. 7 is a schematic view showing an assembly structure of the transceiver with respect to the communication window portion.
Fig. 8 is a schematic view showing an optical shape of an electromagnetic wave transmission wall.
Fig. 9 is a schematic view showing a step shape of the electromagnetic wave transmission wall.
Fig. 10 is a schematic view showing an antenna structure of the communication window portion.
Fig. 11 is a schematic view showing a shield cover of the communication window portion.
Description of the reference numerals
1: a headlamp; 2: a lamp body; 3: a cover lens; 4: a lamp chamber; 5A: a dipped headlight; 5B: a high beam; 5C: an automatic driving notification lamp; 6: a communication window section; 8: a transceiver; 9: a connector plug; 10: a window aperture; 13: a reflector; 18: a cover; 19: a positioning wall; 23: the electromagnetic wave passes through the wall.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 to 11 show an embodiment of a headlamp using the present invention specifically for an autonomous vehicle, and fig. 2 to 11 show a structure of a communication window portion 6 along a line a-a in fig. 1 (b). The headlamp 1 shown in fig. 1 (a) and (b) includes a lamp body 2 and a cover lens 3, and a lamp chamber 4 is formed therebetween. The lamp body 2 is attached to the front end of the vehicle body, and the cover lens 3 covers the front surface of the lamp body 2.
The lamp body 2 is provided with a partition wall 2a, and the lamp chamber 4 is partitioned into an illumination chamber 4a and a communication chamber 4b by the partition wall 2 a. In the illumination room 4a, a low beam lamp 5A and a high beam lamp 5B that illuminate the front of the vehicle, and a notification lamp 5C for notifying an oncoming vehicle or a pedestrian of the automatic driving state of the vehicle are provided. The communication room 4b is provided with a transceiver 8, and performs data communication by electromagnetic waves with communication equipment outside the vehicle via the cover lens 3 in a space shielded by the partition wall 2a from visible light of the lamps 5A to 5C.
As shown in fig. 2 (a) and (b), the cover lens 3 is molded from a transparent synthetic resin, and a communication window portion 6 that transmits electromagnetic waves is formed in the cover lens 3 at a portion corresponding to the transceiver 8 of the communication chamber 4 b. The communication window portion 6 shown in fig. 2 (a) is formed in a shape recessed with respect to the surface of the cover lens 3, and includes an annular positioning wall 19A to which the male connector plug 9A of the external communication device is fitted, and an electromagnetic wave transmission wall 23a substantially perpendicular to the central axis 22 of the transceiver 8.
The communication window portion 6 shown in fig. 2 (B) is formed in a shape protruding from the surface of the cover lens 3, and includes an annular positioning wall 19B to which the female connector plug 9B of the external communication device is fitted, and an electromagnetic wave transmission wall 23B substantially perpendicular to the central axis 22 of the transceiver 8. The shape of the positioning portion is not limited to the circular ring shape illustrated in fig. 2 (a) and (b), and various shapes capable of disposing the connector plug 9 at a position facing the transceiver 8 may be employed.
As shown in fig. 3, the communication window portion 6 is preferably symmetrical with respect to an intersection O with the center axis 22 of the transceiver 8, that is, preferably formed in a circular shape so that electromagnetic waves are uniformly transmitted through each portion of the transmission wall 23. For example, the communication window portion 6 may be formed into a concave shape as shown in fig. 3 (a), a convex shape as shown in fig. 3 (b), a concave curved shape as shown in fig. 3 (c), or a convex curved shape as shown in fig. 3 (d).
As shown in fig. 4 (a), the electromagnetic wave transmitting wall 23 of the communication window portion 6 may be formed integrally with the cover lens 3 from a transparent resin material. Alternatively, as shown in fig. 4 (b), the window hole 10 may be provided in the cover lens 3, and the electromagnetic wave transmission wall 23 may be welded or bonded to the cover lens 3 so as to seal the window hole 10.
Fig. 5 shows a configuration of the transceiver 8 with respect to the communication window portion 6. The transceiver 8 shown in fig. 5 (a) is disposed in the communication chamber 4b separately from the electromagnetic wave transmission wall 23 formed integrally with the cover lens 3. The transceiver 8 of fig. 5 (b) is bonded to the inner surface of the integrally formed electromagnetic wave transmission wall 23. The transceiver 8 in fig. 5 (c) is embedded in the inside of the integrally formed thick electromagnetic wave transmission wall 23. The transceiver 8 shown in fig. 5 (d) is disposed in the communication room 4b separately from the electromagnetic wave transmission wall 23 which is a separate body from the cover lens 3. The transceiver 8 of fig. 5 (e) is bonded to the inner surface of the electromagnetic wave transmission wall 23 of the separate body. The transceiver 8 in fig. 5 (f) is buried inside the thick electromagnetic wave transmission wall 23.
Fig. 6 shows the surface treatment of the electromagnetic wave transmission wall 23. The film member 14 which makes the electromagnetic wave of a specific wavelength opaque is attached to the inner surface of the electromagnetic wave transmission wall 23 shown in (a) in fig. 6. As the film member 14, a light diffusing sheet, a hologram, a fresnel lens, or a band pass filter can be used. A band-pass filter is formed on the electromagnetic wave transmission wall 23 shown in fig. 6 (b) by the multilayer deposited film 15. The electromagnetic wave transmission wall 23 shown in fig. 6 (c) is provided with a light diffusion surface 16 formed by a corrugation process. The film member 14, the multilayer deposited film 15, and the light diffusion surface 16 also function as a shielding portion that makes the transceiver 8 less likely to be seen from the front of the cover lens 3.
Fig. 7 shows an assembly structure of the transceiver 8 to the communication window portion 6. In fig. 7 (a), the transceiver 8 is embedded in the electromagnetic wave transmission wall 23 that is separate from the cover lens 3, and the electromagnetic wave transmission wall 23 is attached to the positioning wall 19 of the communication window 6 by bonding or welding. In fig. 7 (b), the electromagnetic wave transmission wall 23 in which the transceiver 8 is embedded is assembled to the positioning wall 19 by the fitting portion 25. In fig. 7 (c), a thick electromagnetic wave transmission wall 23 is integrally molded with the cover lens 3, and a resin member 24 in which the transceiver 8 is embedded is assembled to the electromagnetic wave transmission wall 23 by a fitting portion 25.
Fig. 8 shows the optical shape of the electromagnetic wave transmission wall 23 formed integrally with the cover lens 3. The electromagnetic wave transmission wall 23 shown in fig. 8 (a) has flat inner and outer surfaces. The electromagnetic wave transmission wall 23 shown in fig. 8 (b) has a convex inner surface and a flat outer surface. The electromagnetic wave transmission wall 23 shown in fig. 8 (c) has convex inner and outer surfaces. The electromagnetic wave transmission wall 23 shown in fig. 8 (d) has a concave inner surface and a flat outer surface. The electromagnetic wave transmission wall 23 shown in fig. 8 (e) has concave inner and outer surfaces. The electromagnetic wave transmission wall 23 shown in fig. 8 (f) is continuous with the cover lens 3 and is formed in a flat surface. In particular, the electromagnetic wave transmission wall 23 shown in fig. 8 (b), (c), (d), and (e) has a lens shape for concentrating the received electromagnetic wave toward the transceiver 8 or a lens shape for suppressing the spread of the transmission electromagnetic wave and forming the transmission electromagnetic wave into a beam parallel to the central axis of the transceiver 8.
The communication window portion 6 shown in fig. 9 includes a step portion 26 on the inner surface of the electromagnetic wave transmission wall 23. The step 26 is formed of a plurality of steps extending concentrically around the center axis 22 of the transceiver 8. For example, the step 26a shown in fig. 9 (a) is constituted by a concentric step having a convex cross section, the step 26b shown in fig. 9 (b) is constituted by a concentric step having a concave cross section, and the step 26c shown in fig. 9 (c) is constituted by a concentric step having a triangular cross section. The stepped portion 26 functions as a shielding portion that prevents the transceiver 8 from being easily seen from the front of the cover lens 3, and also has an optical function of concentrating or forming electromagnetic waves received or transmitted by the transceiver 8 into parallel beams, similarly to the lens shape shown in fig. 8.
The communication window portion 6 shown in fig. 10 is provided with a reflector 13, and the reflector 13 has the same function as the lens shape shown in fig. 8 and 9. That is, the transceiver 8 is attached to the inner surface of the electromagnetic wave transmission wall 23, and the reflector 13 functioning as a transmission/reception antenna for electromagnetic waves is attached thereto. As shown in fig. 10 (a), an electromagnetic wave transmitted from a communication device outside the vehicle (see fig. 2) passes through the electromagnetic wave transmission wall 23, is reflected by the reflection surface 13a of the reflector 13, is condensed at the transceiver 8, and is received by the transceiver 8. As shown in fig. 10 (b), the electromagnetic wave transmitted from the transceiver 8 is reflected by the reflection surface 13a, becomes a parallel beam, passes through the electromagnetic wave transmission wall 23, and is received by the external communication device. Therefore, the communication device and the transceiver 8 can reliably pick up electromagnetic waves, and data communication can be performed efficiently.
The communication window portion 6 shown in fig. 11 is provided with a cover 18 for preventing contamination or decoration. As shown in fig. 11 (a), the cover 18 is formed of a transparent or opaque, colored or uncolored resin material into a cap shape, is normally fitted into the convex or concave communication window portion 6, and is used as a shielding portion for preventing the transceiver 8 from being easily seen from the front of the cover lens 3 in addition to stain resistance and decoration. On the other hand, in data communication, as shown in fig. 11 (b), the cover 18 is detached from the communication window portion 6 in order to connect the connector plug 9 of the external communication device.
In the headlamp 1 configured as described above, when data communication is performed with an external communication device, as shown in fig. 2, in a state where the connector plugs 9A and 9B of the communication device are connected to the communication window 6 and positioned by the positioning wall 19, electromagnetic waves passing through the communication window 6 transmit and receive a large amount of data between the communication device and the transceiver 8 through the wall 23. According to the communication window portion 6 of the present embodiment, the electromagnetic wave transmission wall 23 is formed substantially at a right angle to the center axis 22 of the transceiver 8, and is formed in a circular shape symmetrical with respect to the intersection of the electromagnetic wave transmission wall 23 and the center axis 22, so that the electromagnetic wave can be uniformly transmitted through the electromagnetic wave transmission wall 23, and the reliability of high-speed data communication can be improved. By disposing the connector plug 9 at a position facing the transceiver 8 via the positioning wall 19, it is possible to prevent transmission/reception errors in advance.
The present invention is not limited to the headlamp 1 shown in the above embodiment, and can be applied to various vehicle lamps such as a tail lamp and a side lamp. In addition, the shape and structure of each part may be modified as appropriate without departing from the spirit of the present invention.
Claims (7)
1. A vehicular lamp in which a lamp is provided in a lamp chamber between a lamp body and a cover lens, characterized in that,
a communication window portion through which electromagnetic waves are transmitted is formed in a part of the cover lens, a transceiver for performing data communication based on the electromagnetic waves with a communication device outside the vehicle through the communication window portion is provided in the lamp chamber, the communication window portion includes an electromagnetic wave transmission wall that is substantially perpendicular to a central axis of the transceiver,
the communication window portion includes a positioning portion for disposing a connector plug of the communication device at a position facing the transceiver,
the electromagnetic wave transmission wall is formed in a symmetrical shape with respect to an intersection point of the electromagnetic wave transmission wall and a central axis of the transceiver,
the communication window portion includes a step portion on an inner surface of the electromagnetic wave transmission wall.
2. The vehicular lamp according to claim 1,
the electromagnetic wave transmission wall is formed integrally with the cover lens from a transparent resin material.
3. The vehicular lamp according to claim 1,
the communication window portion includes a window hole formed in the cover lens, and the electromagnetic wave transmission wall is bonded to the cover lens so as to seal the window hole.
4. The vehicular lamp according to claim 1,
the electromagnetic wave transmission wall includes a shielding portion for making the transceiver less visible from the front of the cover lens.
5. The vehicular lamp according to claim 1,
a reflector is arranged in the lamp chamber and reflects the electromagnetic waves transmitted by the transceiver or the electromagnetic waves to be received by the transceiver.
6. The vehicular lamp according to claim 2,
the electromagnetic wave transmission wall includes a shielding portion for making the transceiver less visible from the front of the cover lens, and/or
A reflector is arranged in the lamp chamber and reflects the electromagnetic waves transmitted by the transceiver or the electromagnetic waves to be received by the transceiver.
7. The vehicular lamp according to claim 3,
the electromagnetic wave transmission wall includes a shielding portion for making the transceiver less visible from the front of the cover lens, and/or
A reflector is arranged in the lamp chamber and reflects the electromagnetic waves transmitted by the transceiver or the electromagnetic waves to be received by the transceiver.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017204400A JP2019079642A (en) | 2017-10-23 | 2017-10-23 | Vehicular lighting fixture |
| JP2017-204400 | 2017-10-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109915785A CN109915785A (en) | 2019-06-21 |
| CN109915785B true CN109915785B (en) | 2021-12-07 |
Family
ID=66628007
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821700823.5U Active CN209325658U (en) | 2017-10-23 | 2018-10-19 | Lamps apparatus for vehicle |
| CN201811222956.0A Active CN109915785B (en) | 2017-10-23 | 2018-10-19 | Vehicle lamp |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821700823.5U Active CN209325658U (en) | 2017-10-23 | 2018-10-19 | Lamps apparatus for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019079642A (en) |
| CN (2) | CN209325658U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019079642A (en) * | 2017-10-23 | 2019-05-23 | 株式会社小糸製作所 | Vehicular lighting fixture |
| CN110620614B (en) * | 2019-10-11 | 2023-04-28 | 新疆大学 | Multi-beam street lamp for road visible light communication and setting method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2721429Y (en) * | 2004-08-20 | 2005-08-31 | 重庆三信电子有限公司 | Pressure and reverse radar monitoring and displaying alarming system of vehicle tyre |
| CN101146696A (en) * | 2005-03-23 | 2008-03-19 | 富士通天株式会社 | Car body equipment control device and car body equipment control method |
| CN209325658U (en) * | 2017-10-23 | 2019-08-30 | 株式会社小糸制作所 | Lamps apparatus for vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008146933A (en) * | 2006-12-07 | 2008-06-26 | Koito Mfg Co Ltd | Vehicular lamp |
| JP2012144218A (en) * | 2011-01-14 | 2012-08-02 | Asahi Glass Co Ltd | Window glass for automobile |
-
2017
- 2017-10-23 JP JP2017204400A patent/JP2019079642A/en active Pending
-
2018
- 2018-10-19 CN CN201821700823.5U patent/CN209325658U/en active Active
- 2018-10-19 CN CN201811222956.0A patent/CN109915785B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2721429Y (en) * | 2004-08-20 | 2005-08-31 | 重庆三信电子有限公司 | Pressure and reverse radar monitoring and displaying alarming system of vehicle tyre |
| CN101146696A (en) * | 2005-03-23 | 2008-03-19 | 富士通天株式会社 | Car body equipment control device and car body equipment control method |
| CN209325658U (en) * | 2017-10-23 | 2019-08-30 | 株式会社小糸制作所 | Lamps apparatus for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109915785A (en) | 2019-06-21 |
| JP2019079642A (en) | 2019-05-23 |
| CN209325658U (en) | 2019-08-30 |
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