JP5624196B1 - Scuff plate - Google Patents

Abstract

A scuff plate that can be easily attached to a vehicle body by a general user by eliminating the need for wiring between the scuff plate having a light emitting function and the vehicle body to which the scuff plate is attached. A scuff plate according to the present invention includes a front cover portion having a window in which light emission of the light guide plate can be visually recognized from the outside, a light guide plate disposed inside the front cover portion and having a textured surface, and a rear surface of the light guide plate. And a back cover portion disposed on the side. In addition, a light source unit that irradiates light from the side of the light guide plate to the inside of the light guide plate, a battery power source unit that supplies power to the light source unit, and an external magnetic flux density is detected to energize the light source unit from the battery power source unit. And a switch unit for turning on / off the device. [Selection] Figure 1

Description

  The present invention relates to a scuff plate having a light emitting function, and more particularly to a scuff plate that can be easily attached because it does not require wiring work when installed in a vehicle.

  The scuff plate is a part that is attached to the upper surface of the side sill of the car, and is a plastic or metal plate that displays a car name, a manufacturer name, or the like. The scuff plate has a function to protect the side sill from scratches when getting on and off the car. Is done.

  FIG. 3 is a view showing the structure of a conventional scuff plate, FIG. 3 (a) is a sectional view, and FIG. 3 (b) is a corresponding plan view (see Patent Document 1). As shown in FIG. 3, the scuff plate includes a light emitting diode (hereinafter referred to as “LED”) 30, a light guide plate 31, a reflection plate 32, a case 33, and a cover 37. Light from the LED 30 enters from the side surface 31 b of the light guide plate 31. The reflection plate 32 is disposed between the bottom surface 33 a of the case 33 and the back surface 31 a of the light guide plate 31. On the other hand, the coating 34 is printed on the surface 32 a of the reflection plate 32, and the surface 32 a of the reflection plate 32 is bonded to the entire rear surface 31 a of the light guide plate 31 with an adhesive 36. The light incident on the light guide plate 31 from the LED 30 is reflected by the paint 34 and is emitted to the outside from the surface 31c of the light guide plate 31. In the example shown in FIG. it can. Therefore, the scuff plate can be used as a highly decorative scuff plate, and since the light guide plate 31 is not processed or printed, the scuff plate can be manufactured easily and at low cost.

  FIG. 4 is a perspective view showing the structure of a conventional scuff plate (see Patent Document 2). As shown in FIG. 4, the scuff plate 41 includes a cover 42, a dial plate 43, an optical sheet 44, a light guide plate 45, and a case 47, which are stacked in this order. In addition, a light source unit 46 having LEDs 40 is disposed at both ends in the case 47, and the character portion 48 on the dial plate 43 is subjected to a textured process. Since the dial plate 43 is a light guide, when light from the LED 40 is incident from the end face of the dial plate 43, the dial plate 43 is reflected and diffused by the character portion 48 on the dial plate 43. In the example shown in FIG. 4, the character portion 48 imitates “CAR”, and therefore the “CAR” character that emits light can be visually recognized from the opening 42 a of the cover 42. When the scuff plate 41 is attached to the vehicle body, the LED 40 is connected to the power supply control circuit on the vehicle body side by the wiring 46a, supplied with electric power, and controlled to emit light in conjunction with lighting of the vehicle width lamp or the like. In FIG. 4, an opening 49 for the wiring 46 a of the light source unit 46 is arranged in the case 47.

JP 2009-237143 A JP 2009-248617 A

  Since a conventional scuff plate having a light emitting function supplies power of a light emitting body such as an LED from a vehicle body to which the scuff plate is attached, wiring for connecting a power source on the vehicle body side and the scuff plate is indispensable. The light emission control of the scuff plate is a mechanism in which the scuff plate emits light in accordance with the lighting of the vehicle width lamp, etc., in conjunction with the lighting of the vehicle width lamp, the interior light, the door lamp or the like of the vehicle body. For this reason, wiring connecting the power control circuit on the vehicle body side and the scuff plate is necessary. However, since such wiring work requires specialized knowledge, a general user cannot easily attach the scuff plate to the vehicle body. Further, when wiring is required, the number of work steps increases, the number of parts increases, the cost increases, and work time is also required.

  An object of the present invention is to provide a scuff plate that can be easily attached to a vehicle body by a general user by eliminating the need for wiring between the scuff plate having a light emitting function and the vehicle body to which the scuff plate is attached. It is another object of the present invention to provide a scuff plate that can reduce the work cost for mounting on a vehicle body and shorten the work time.

The scuff plate of the present invention incorporates a light guide plate and emits light from the side surface of the light guide plate to the inside of the light guide plate, so that the textured surface of the light guide plate emits light. This scuff plate includes a front cover part that forms a window through which light emission of the light guide plate can be visually recognized from the outside, a light guide plate that is placed inside the front cover part and has a textured surface, and a back cover that is placed on the back side of the light guide plate A part. In addition, a light source unit that emits light from the side surface of the light guide plate to the inside of the light guide plate, a battery power source unit that supplies power to the light source unit, and an external magnetic flux density are detected inside the front cover unit. And a switch unit for turning on / off energization from the unit to the light source unit. In addition, the switch unit includes a timer for cutting off the energization after a predetermined time has elapsed since the energization from the battery power source unit to the light source unit was started.

It is preferable that the light guide plate has a light emitting surface on the back side of the light guide plate, and the light guide plate preferably has a concave portion with a certain depth on the surface, and the bottom surface and side surfaces of the concave portion are textured. Moreover, the aspect in which a light source part irradiates light to the inside of a light-guide plate from the two side surfaces which a light-guide plate opposes with a several light source is preferable. On the other hand , the light guide plate preferably has a light reflecting film on the side surface other than the side surface on which light is irradiated.

  The switch unit includes an optical sensor that detects the intensity of light radiated from the outside to the scuff plate, and when the intensity of light radiated from the outside is smaller than a set value, a mode in which current is supplied from the battery power source unit to the light source unit is preferable. . Also, the scuff plate has a resin part around it, so that the window of the front cover part can be seen from the outside, the scuff plate is embedded in the resin part, and the scuff plate is attached to the lower surface of the resin part. It is more preferable to provide a recess that fits into the attachment.

  According to the present invention, since the scuff plate having the light emitting function can be attached to the vehicle body without performing wiring work, the attaching work is easy, the cost is low, and the working time is short.

It is a perspective view which illustrates the structure of the scuff plate of this invention. It is sectional drawing of the light-guide plate incorporated in the scuff plate of this invention. It is a figure which shows the structure of the conventional scuff plate. It is a perspective view which shows the structure of the conventional scuff plate. It is sectional drawing which shows the structure of the reed switch used for the scuff plate of this invention. It is a perspective view of the hall element used for the switch part of the scuff plate of the present invention. It is a perspective view of the magnetoresistive element used for the switch part of the scuff plate of this invention. It is a sensor circuit diagram incorporating the magnetoresistive element used for the switch part of the scuff plate of the present invention. It is a schematic diagram which illustrates the aspect when the scuff plate of this invention is attached to the vehicle body. It is a perspective view of the convex attachment arrange | positioned on the vehicle body which attaches the scuff plate of this invention.

  FIG. 1 is a perspective view illustrating the structure of the scuff plate of the present invention, and is a perspective view as seen from the back side of the scuff plate, that is, the vehicle body side to which the scuff plate is attached. As shown in FIG. 1, the scuff plate includes a front cover portion 1, a light guide plate 2 disposed inside the front cover portion 1, and a back cover portion 3 disposed on the back side of the light guide plate 2. Laminate as indicated by the arrows. The front surface in the front cover portion refers to the outer surface when the scuff plate is mounted on the side sill of the vehicle body. The scuff plate emits light from the side surface of the built-in light guide plate 2 to the inside of the light guide plate 2, so that the textured surface of the light guide plate 2 emits light. In the example shown in FIG. 1, the light emitting portion 2 a on the surface of the light guide plate 2 imitates the word “Coupe”, so that it passes through the window 1 a formed on the front cover 1 and is on the light guide plate 2. The emitted “Coupe” can be visually recognized from the outside.

  As shown in FIG. 1, the scuff plate includes a light source unit 4 that emits light from the side surface of the light guide plate 2 to the inside of the light guide plate, a battery power source unit 5 that supplies power to the light source unit 4, and a light source from the battery power source unit 5. And a switch unit 6 for turning on / off the energization of the unit 4. The switch unit 6 detects an external magnetic flux density and turns on / off energization from the battery power source unit 5 to the light source unit 4. The scuff plate illustrated in FIG. 1 uses a built-in battery power source as an output power source. In addition, a magnet is placed under the door of the vehicle body to detect the magnetic flux density generated on the scuff plate by opening and closing the door, etc., and the switch unit turns on the energization from the battery power supply unit to the light source unit according to the external magnetic flux density. Turn off.

  Therefore, since the output power supply of the light emitter does not depend on the vehicle body side to which the scuff plate is attached, wiring for connecting the power supply on the vehicle body side and the scuff plate is unnecessary. Further, since the light emission control of the scuff plate does not depend on the lighting of the vehicle width lamp or the like of the vehicle body, the wiring connecting the power control circuit on the vehicle body side and the scuff plate is unnecessary. Therefore, a general user can easily attach the scuff plate to the vehicle body without performing wiring work. Further, since no wiring is required, the number of parts can be reduced, the cost can be reduced, and the work efficiency can be increased.

  In the example shown in FIG. 1, the light source unit 4 includes a total of six LEDs, three at each end, so as to irradiate light into the inside of the light guide plate from two opposing side surfaces of the light guide plate 2. The mode using LEDs is preferable in that it consumes less power than the mode using other light sources, does not generate heat during light emission, and can arbitrarily select various emission colors. An embodiment in which one LED is used or an embodiment in which light is irradiated from one side surface of the light guide plate to the inside of the light guide plate is also effective. On the other hand, in the light source unit, when a plurality of LEDs emit light from the two opposite side surfaces of the light guide plate to the inside of the light guide plate, the amount of light filling the light guide plate increases, and the light emission is uniform, strong, and has good contrast. Is preferable in that it is obtained.

  For example, a coin-type lithium battery (CR2430, 3V, φ24.5 mm × 3 mm, 4.3 g, manufactured by FDK Corporation) can be used for the battery power supply unit 5. After placing the battery in the battery power supply unit 5, as shown by the arrow in FIG. 1, the mode of setting by attaching the battery power supply cover unit 5a facilitates battery replacement, fixes the battery power supply unit, and the scuff plate After attaching to the vehicle body, it is preferable at the point which can protect a battery power supply part.

  The light guide plate 2 may be a flat plate made of acrylic resin (polymethyl methacrylate), polycarbonate resin, glass or the like. In particular, the acrylic resin plate is preferable in that it has high transparency and can be easily processed. The light guide plate is subjected to a textured surface, and the surface of the light guide plate subjected to the textured process emits light. The embossing is a process of forming fine irregularities on the surface of a mold when pressing a synthetic resin or metal, and transferring the fine irregularities to the surface of a molded product by pressing. The mold can be provided with irregularities on the surface by chemical treatment by etching or physical treatment such as sandblasting. In addition, in this specification, the embossing includes not only the case of pressing using a mold, but also the processing of widely giving fine irregularities on the surface of a molded product. When light is incident on the inside of the light guide plate 2, the light emitting portion 2 a has a textured surface, so that the light is scattered, reflected, and emitted by the surface irregularities.

  In the light guide plate 2, when the light emitting surface, that is, the portion subjected to the textured processing is on the back side of the light guide plate 2, the light generated in the light emitting portion once passes through the inside of the light guide plate, and then the scuff plate Radiated to the outside. For this reason, it is preferable at the point which can visually recognize the deep emission. FIG. 2 is a cross-sectional view of a light guide plate built in the scuff plate of the present invention. As shown in FIG. 2, the light guide plate 2 has a concave portion with a certain depth on the surface, and the bottom surface 2 a 1 and the side surface 2 a 2 of the concave portion are textured. In this embodiment, since both the bottom surface 2a1 and the side surface 2a2 of the recess emit light by using the light from the light source section 4, compared with the embodiment in which only the surface of the light guide plate that does not have the recess is textured, It is preferable in that light can be used efficiently and three-dimensional light emission can be obtained.

  The aspect in which the light guide plate 2 has the light reflecting film on the side surface other than the side surface that irradiates light confines the light incident on the light guide plate 2 in the light guide plate, fills the light in the light guide plate, is uniform and strong, This is preferable in that clear light emission can be obtained. The light reflecting film is a thin film made of a metal such as aluminum or silver. When fine irregularities are applied to the surface of the acrylic resin plate, the processed surface becomes white. Therefore, when white light emission is to be obtained by an LED that emits white light, clear white light emission can be obtained by using the light guide plate after the uneven processing as it is. On the other hand, when trying to obtain red light emission, blue light emission, etc. by an LED that emits red light, blue light, etc., using a light guide plate whose processing surface is colored red, blue, etc., each color is emphasized. This is preferable. The scuff plate shown in FIG. 1 is completed by placing the light guide plate 2 on the inner side of the front cover portion 1 and then attaching the back cover portion 3, so that the scuff plate is easy to create and the light guide plate can be easily replaced. Therefore, the specification can be easily changed to a scuff plate having a different light emission mode.

  In the example shown in FIG. 1, the front cover unit 1 has a box shape without an upper lid, and components such as the light source unit 4 and the battery power source unit 5 are arranged inside the box. After attaching the scuff plate to the vehicle body, the front cover part protects the built-in components from external forces, and the front cover part must be protected from scratches when getting on and off, and the front cover part surface is rusted. It is also necessary to prevent corrosion so as not to occur. Therefore, the front cover portion is preferably made of stainless steel, which is an alloy of nickel or chromium. In addition, after attaching the scuff plate to the vehicle body, the front surface of the front cover portion is easily noticeable when the door is opened and closed. Furthermore, it is also possible to arbitrarily change the front form of the front cover part depending on the vehicle type without changing the light emission mode of the built-in light guide plate.

  It is preferable that the window 1a arranged in the front cover portion 1 is formed of a transparent synthetic resin plate or glass plate made of acrylic resin or the like so that dust and water do not enter the scuff plate. Moreover, since the window arrange | positioned at a front cover part is a part which is easily damaged at the time of boarding / alighting, the aspect made into hard glass windows, such as a borosilicate glass, is more preferable. The back cover disposed on the back surface of the light guide plate is preferably an embodiment in which the surface on the light guide plate side is black in that the contrast between the colored portion and the background is clarified when the light guide plate is colored white.

  The switch unit 6 detects an external magnetic flux density generated when a magnet (detector) arranged outside the scuff plate approaches the switch unit, is positioned on the switch unit, or is detached from the switch unit, To turn on / off the current from the light source to the light source. For example, if a magnet is placed on the lower surface of the door of the vehicle body, the magnet moves by opening and closing the door, and the magnetic flux density on the scuff plate placed on the side sill of the vehicle body changes. Energization from the power supply unit 5 to the light source unit 4 is turned on / off. Unlike a limit switch or the like, a switch that operates by detecting the magnetic flux density has no contact with the detection body, so there is no wear or damage and high durability. Moreover, it is preferable at the point that there exists a merit that a response is high-speed and size reduction is possible. The magnetic detection element can be arbitrarily selected from a reed switch, a Hall element, a magnetoresistive element and the like according to the specifications of the scuff plate.

  FIG. 5 is a cross-sectional view showing the structure of the reed switch 50 used in the scuff plate of the present invention. As shown in FIG. 5, the reed switch 50 includes a glass tube 51 filled with an inert gas 53 and two overlapping leads 52. Since the lead 52 is made of a nickel alloy that is a magnetic body, when the magnet (detection body) (not shown) approaches the reed switch 50, the lead 52 is magnetized and an attractive force is generated in the overlapped portion. When the suction force is greater than the elastic force of the lead 52, the overlapping portions of the two leads are connected and energized. On the contrary, when the magnet is detached from the reed switch 50, the attracting force of the overlapped portion is weakened, and when the attracting force becomes smaller than the elastic force of the lead, the connection between the two leads is released. Therefore, the reed switch has both a magnetic detection function and a switch function. The reed switch is preferable in that it has advantages such as low cost and no operation power supply.

  FIG. 6 is a perspective view of the Hall element 60 used in the switch portion of the scuff plate of the present invention. As shown in FIG. 6, when a current flows from terminal A to terminal B and a magnetic field (magnetic flux density) as indicated by an arrow is applied from the front surface side to the back surface side of Hall element 60, the Hall element 60 is moved into the Hall element 60 by Lorentz force. The distribution of electrons is biased toward the terminal D. For this reason, a potential difference is generated between the terminal C and the terminal D, and the potential difference (output voltage) is proportional to the magnetic flux density with respect to the Hall element. Therefore, the Hall element functions as a magnetic detection element, detects the external magnetic flux density generated by the approach / detachment of the detection body (magnet), converts it to an electrical signal, and amplifies it as necessary, thereby providing a battery power source. Energization from the light source to the light source can be turned on / off. A III-V group semiconductor having a high electron mobility is preferably used for the Hall element, and a thin film (thickness on the order of μm) made of InSb, InAs, or GaAs is particularly suitable. The Hall element is preferable in that it has a merit that a high-speed response and miniaturization are possible, and an output proportional to the external magnetic flux density can be obtained.

  FIG. 7 is a perspective view of the magnetoresistive element 70 used in the switch part of the scuff plate of the present invention. FIG. 7A shows a state where there is no magnetic field around the magnetoresistive element 70, and FIG. Represents a state in which there is a magnetic field from the back surface side to the front surface side of the magnetoresistive element 70. As shown in FIG. 7A, in a state where there is no magnetic field, when a current is passed from terminal A to terminal B, the current goes straight as indicated by the arrow. On the other hand, as shown in FIG. 7B, when a magnetic field (magnetic flux density) is applied perpendicular to the plate surface of the magnetoresistive element, the current is bent as indicated by the arrow due to the Lorentz force, and the current path becomes longer. The electrical resistance increases as the length increases.

FIG. 8 is a sensor circuit diagram incorporating a magnetoresistive element used in the switch portion of the scuff plate of the present invention. In the circuit shown in FIG. 8, the magnetoresistive elements 71 and 72 are connected in series, a voltage is applied, and the permanent magnet 73 is disposed. When the magnet 74 travels as indicated by an arrow across the front surfaces of the magnetoresistive elements 71 and 72 of this circuit, when the magnet 74 is at the position A, the magnetic field generated by the magnet 74 affects the magnetoresistive elements 71 and 72. The voltage at the output terminal at this time is denoted by _VA . When the magnet 74 advances and reaches the position B, the magnetic flux density by the magnet 74 is applied to the magnetoresistive element 71, so that the electric resistance of the magnetoresistive element 71 increases, and the voltage V _{B at the} output terminal is V _B > V _A It becomes.

Further, when the magnet 74 advances and reaches the position C, the magnetic flux density by the magnet 74 is applied to the magnetoresistive element 72, so that the electric resistance of the magnetoresistive element 72 increases, and the voltage V _{C at the} output terminal is V _C < V _A. Therefore, the magnetoresistive element can turn on / off energization from the battery power supply unit to the light source unit by detecting an external magnetic flux density and converting it to a change in voltage. For the magnetoresistive element, a material having a high electron mobility is preferable, and a III-V group semiconductor such as InSb is preferable. Also, a large output can be obtained by providing a large number of electrodes on the semiconductor surface. The magnetoresistive element is preferable in that it has a merit of high speed response and miniaturization and high sensitivity. When the change in current obtained from the magnetic detection element is weak, it is preferable to use the current as the base current of the transistor, so that the transistor can be used as a switch because it can be used for switching operation even if the current is weak. .

  It is preferable that the switch unit includes a timer for cutting off energization, that is, an interval timer, after a predetermined time has elapsed since the energization of the light source unit from the battery power source unit. Since the scuff plate of the present invention uses a battery power source as an output power source, the amount of stored electricity is limited and needs to be saved. Therefore, it is preferable to incorporate an interval timer circuit for turning on the output signal at the same time as turning on the start signal for starting energization from the battery power supply unit to the light source unit and turning off the output signal after the set time has elapsed. .

  Preferably, the switch unit includes an optical sensor that detects the intensity of light emitted from the outside to the scuff plate and energizes the battery power source unit to the light source unit when the intensity of light emitted from the outside is smaller than a set value. According to such an embodiment, the scuff plate does not emit light in an atmosphere where the periphery of the scuff plate is bright, and the scuff plate emits light in a dark atmosphere where the light emission of the scuff plate can be clearly recognized. For this reason, it is preferable in that unnecessary light emission of the scuff plate can be avoided and consumption of the battery power source can be suppressed. In this aspect, the light receiving window is provided in the front cover portion of the scuff plate. When the change in the current obtained from the optical sensor is small, the transistor can be used as a switch by using the current as the base current of the transistor, and the switch operation is possible even with a weak current. preferable.

  For the optical sensor, a CdS cell or a photodiode can be preferably used. The CdS cell can be used as an optical sensor because conduction electrons are generated when it is exposed to light, conductivity increases, and the electrical resistance of the CdS cell decreases as the intensity of irradiated light increases. The CdS cell is suitable in that it responds to visible light, has no characteristic change due to the frequency of light to be irradiated, and has a wide range of changing electric resistance.

  A photodiode has a pn junction or a pin structure, and when irradiated with light, an electromotive force is generated to excite electrons and a photocurrent flows. Therefore, the photodiode can be used as an optical sensor. Since the light to be detected is visible light (wavelength: 380 nm to 750 nm), a Si cell or a Ge cell is preferable in the photodiode. Since the Si cell has a wide band gap, the noise is lower than that of the Ge cell. The photodiode is suitable in that the linearity of the output current with respect to the irradiation light is good, the cost is low, and the quantum efficiency is high (about 80%).

  In the scuff plate illustrated in FIG. 1, permanent magnets 7 are fixed to both ends on the back side, and the height dimension of each component arranged in the front cover part 1 including the permanent magnets 7 and the depth dimension of the front cover part 1. Are aligned. For this reason, when the side sill on the vehicle body side is made of iron, etc., the scuff plate can be directly attached to any place on the side sill with a magnet, and can be moved to other positions as desired. It can also be removed. Moreover, wiring is unnecessary in these operations. As the permanent magnet, MK steel, ferrite magnet, neodymium magnet or the like can be preferably used.

  FIG. 9 is a schematic view illustrating an aspect when the scuff plate of the present invention is attached to the vehicle body. In the example shown in FIG. 9, the resin portion 90 is provided around the scuff plate, and the scuff plate is embedded in the resin portion 90 so that the window 1 a of the front cover portion 1 can be seen from the outside (see FIG. 9). 9, the structure other than the resin portion is indicated by a broken line for convenience of explanation. As shown in FIG. 1, when the side sill of the vehicle body to be attached is made of a magnetic material such as iron, the scuff plate of the present invention can be attached on the side sill with a permanent magnet 7 on the back surface. However, the attachment to the vehicle body is not limited to the attachment mode by the permanent magnet, and as shown in FIG. 9, it can be attached on the side sill with the scuff plate embedded in the resin portion. Further, the scuff plate of the present invention can be attached to the vehicle body with a double-sided tape.

  FIG. 10 is a perspective view of a convex attachment disposed on a vehicle body to which the scuff plate of the present invention is attached. As shown in FIG. 9, when the resin part 90 embedded with the scuff plate is attached to the vehicle body, when the convex attachment as illustrated in FIG. 10 is arranged on the vehicle body, the resin part 90 is fitted to the convex attachment. It is preferable that the concave portion is provided on the lower surface of the resin portion 90 in terms of easy attachment.

  According to the present invention, a scuff plate having a light emitting function can be attached to a vehicle body without performing wiring work.

DESCRIPTION OF SYMBOLS 1 Front cover part 1a Window 2 Light guide plate 2a Light emission part 3 Back cover part 4 Light source part 5 Battery power supply part 5a Battery power supply cover part 6 Switch part 7 Permanent magnet 50 Reed switch 51 Glass tube 52 Lead 53 Inert gas 60 Hall element 70, 71, 72 Magnetoresistive element 73 Permanent magnet 74 Magnet 90 Resin part

Claims (7)

A scuff plate that has a built-in light guide plate and emits light from the side surface of the light guide plate to the inside of the light guide plate so that the surface of the light guide plate that has been textured emits light,
A front cover part formed with a window through which the light emission of the light guide plate can be seen from the outside;
The light guide plate which is disposed inside the front cover part and has a textured surface,
A back cover portion disposed on the back side of the light guide plate ;
And inside the front cover part,
A light source unit that emits light from the side surface of the light guide plate to the inside of the light guide plate;
A battery power supply for supplying power to the light source;
It is a scuff plate comprising a switch part that detects external magnetic flux density and turns on / off the energization from the battery power source part to the light source part,
The switch unit has a timer for cutting off the energization after a lapse of a certain time after starting energization from the battery power source unit to the light source unit,
Scuff plate that does not require wiring between the car body.   The scuff plate according to claim 1, wherein the light guide plate has a light emitting surface on a back side of the light guide plate.   The scuff plate according to claim 1, wherein the light guide plate has a concave portion having a certain depth on a surface thereof, and a bottom surface and a side surface of the concave portion are textured.   The scuff plate according to claim 1, wherein the light source unit irradiates light into the light guide plate from two opposite side surfaces of the light guide plate by a plurality of light sources.   The scuff plate according to claim 1, wherein the light guide plate has a light reflecting film on a side surface other than the side surface on which light is irradiated.   The switch unit includes an optical sensor that detects the intensity of light emitted from the outside to the scuff plate, and energizes the light source unit from the battery power supply unit when the intensity of light emitted from the outside is smaller than a set value. The scuff plate according to any one of 5 above. A resin part is provided around the scuff plate, and arranged so that the scuff plate is embedded in the resin part so that the window of the front cover part can be visually recognized from the outside.
The scuff plate according to any one of claims 1 to 6, further comprising a concave portion on the lower surface of the resin portion, the concave portion being fitted to a convex attachment of a vehicle body to which the scuff plate is attached.

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