JPS63106155A - Message indicator lamp - Google Patents

Abstract

PURPOSE:To lead a part of light incident in a light guide plate into a room mirror and inform a driver of message contents, by installing a letter display part of the same contents of the message, on the top of plural light guide plates of a message indicator lamp to be attached to a rear window. CONSTITUTION:Plural light guide plates 9A-9C, where messages to be communicated to succeeding vehicles are stippled, are set up the housing 1 installed in opposition to a rear window 2, and a lamp 13 to be installed in the lower part is selectively lighted, thus a message display takes place. A brake display is carried out by a lamp 10. At the time of the message display, a part of light incident into these light guide plates 9A-9C is led into a cab room mirror from the upside of these plates 9A-9C. On the top of respective light guide plates 9A-9C, there are provided with message display parts 38-40 of the same contents, whereby a display of the same contents with that of a message indicator lamp is made performable, so that the message contents are informable to a driver.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a message display lamp that is placed at the rear of an automobile body and displays a message to vehicles behind.

[Conventional technology]

This type of message indicator light, which is placed near the rear window of a car at the driver's eye level and displays a message to following vehicles, is usually shown in figures 8 to 10.
It is configured as shown in the above. That is, in these figures, 1 is a housing that is disposed at an appropriate location on the inner surface of the rear window 2 via a gasket 3 and is open on the front surface, that is, the surface facing the rear window 2 on the rear side of the vehicle body, and 4 is a housing that is fixed to the vehicle body 6. A vehicle body mounting stand 9A, 9 which is fixed by screws T and nuts 8 and has the housing 1 placed and fixed on its upper surface.
Reference numerals B and 9C denote light guide plates laminated at appropriate intervals within the housing 1 so as to close the front opening of the housing 1; reference numeral 10 denotes a light guide plate 9A disposed deep inside the housing 1; 9B and 9C are backlit warning display bulbs; 11 is a reflector that reflects the light from the bulb 10 forward;
12 is a holder, 13 is each light guide plate 9A in this boulder 12.
, 9B, and 9C, a total of six message display bulbs are housed and arranged, and 14 is disposed behind the light guide plate 9C, where a diffusion lens 15 consisting of a large number of convex lenses is formed on the back surface. This is a step lens.

The light guide plate 9 is made of a highly translucent resin such as acrylic resin, and the back side is engraved with 16 letters (conical conical recesses).

A display section consisting of a symbol or the like, for example, a display section 17 that reads "GOOD BYJ" is displayed. Further, a pair of left and right light entrance portions 18A, 1 formed in a long groove shape on the lower end surface of the light guide plate 9A.
8B are provided, and these light entrance portions 18A, 18B
The message display valve 13 is inserted into each of the above. The light emitted from the bulb 13 enters each light entrance part 18A, 18.
B enters the light guide plate SA, and this incident light travels through the light guide plate 9, hits the stipples 16, and is reflected forward.
The characters "GOOD BYJ" on the display section 1T are brightly illuminated. Therefore, the display section 17 can be read and serves as a message to the following vehicles.

Similarly, the light guide plates 9B and 9C have different characters on their backs.

A display section consisting of symbols, etc., such as "Please come first."

Display parts such as "Excuse me" are displayed by dots 20 and 21, respectively, and these display parts are on the light guide plate 9.
It is configured to be illuminated when message display bulbs 13 arranged corresponding to B and 9C are turned on. That is, the display section of each light guide plate 9A, 9B, 9C is displayed brightly by selectively lighting up the message display bulb 13 disposed corresponding to the light guide plate by operating a switch. It sends a message appropriate to the situation to the following vehicle. Note that a pair of left and right light entrance portions 23 and 24 (
24 (not shown) is provided.

On the other hand, the warning display bulb 10 lights up during braking and illuminates the light guide plates 9A, 9B, 9C from behind in red or yellow, thereby providing a stop warning (sign).
Do this. At this time, each light guide plate 9A.

The characters on the displays 9B and 9C are erased and cannot be read.

[Problem that the invention attempts to solve]

By the way, although such a conventional message indicator light 28 can convey a message appropriate to the situation to a following vehicle, the driver does not know which message is currently being displayed among the multiple displays. Therefore, an operation switch panel with the same number of changeover switches as the number of messages is provided near the driver's seat, the content of the message is displayed near each switch, and the message is illuminated by operating the switch.

However, in such a configuration, the message indicator light 2
8. It is necessary to wire the number of cords corresponding to the number of displays to the operation switch panel, and it is also necessary to incorporate an indicator into the switch panel so that it can be seen which display is being displayed. If the message characters on the operation switch panel are also illuminated, it will be easy to use. As a result, the operation switch panel becomes larger and requires a larger space, and the number of wires and parts increases, resulting in a significant increase in costs.

[Means for solving problems]

The message indicator lamp according to the present invention was made to solve the above-mentioned problems, and includes a plurality of light guide plates each having a display section with a different message content, and a display section of each light guide plate that illuminates the display section of each light guide plate. An opening opening toward the front side of the vehicle body is provided in a housing disposed inside the rear window containing a message display bulb, and light is emitted from the message display bulb and enters a light guide plate corresponding to the bulb. A part of the light is reflected from the display part of the light guide plate to the i-plane side, and the remaining 9 lights are emitted to the back side by the display part or a separately provided reflection part, and are emitted from the opening to the room mirror. I'm trying to guide you.

[Effect]

In the present invention, since it is possible to confirm which message is currently being displayed by the light that enters the rearview mirror from the message display lamp, a large-scale operation switch panel for displaying the message is provided near the driver's seat. This is not necessary and the structure can be simplified.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a sectional view showing an embodiment of a message indicator lamp according to the present invention, FIG. 2 is a circuit diagram of a message indicator bulb,
FIG. 3 is a diagram showing the inside of the vehicle body, and FIG. 4 is a perspective view showing the main parts of the light guide plate and the housing. Components and parts that are the same as those in FIGS. 8 to 10 are designated by the same reference numerals, and their explanations will be omitted. In this embodiment, a window frame 32 having an opening 31 that is bent in a substantially inverted shape and opening toward the front of the vehicle body is integrally provided at the center of the upper surface of the housing 1, and is provided at the upper end of each light guide plate 9A, 9B, and 9C. The extensions 33, 34, 35 extending inside the window frame 32 are respectively extended, and the extensions 33, 34, 35 are connected to the light guide plate so that they do not overlap each other, as shown in FIG. 9A,
Two partition walls 36&, 36b are provided inside the window frame 32 and are located between the adjacent extensions 33 and 34, and between 34 and 35, respectively. The surfaces of each of the extensions 33, 34, 35 constitute a reflection section that reflects the light guided by the extension toward the front of the vehicle body and guides it to the rearview mirror 43.
A stipple mark 38. which displays the same message as the message content on the display section 17, 20.21 provided on the back side of C.
39.40 are provided respectively. However, these message characters are reduced in size. And each extension part 3
3.34.35, the driver 42 turned the rearview mirror 43 (
(Fig. 3).

Near the driver's seat is a signal generation switch 44 shown in Figure 2.
When the switch 44 is operated to send a pulse signal to the stepping motor 45 to drive the motor, each light guide plate 9A is moved.

Message display lamps 13A, 13B, and 13C that individually illuminate 9B and 9C are sequentially turned on. Of course, the stepping motor 45 can be stopped at the position of the message desired to be displayed by operating the switch.

In the message display lamp 28 having such a configuration, if the switching motor 45 is driven by operating the signal generation switch 44 and the message display bulb 13A corresponding to the light guide plate 9A is turned on, for example, the message display bulb 13A corresponding to the light guide plate 9A is turned on. The emitted light enters the light entrance portions 18A, 1 of the light guide plate 9A.
8B (see Figure 10), a part of it hits the stipple 16 and is reflected to the surface side, so that the display part 1
The letter 7 [αη0BYJ is brightly illuminated. Further, the residual light traveling inside the light guide plate sA reaches the extension part 33 of the light guide plate 9A, hits the nine dots 38 provided on the front side of the light guide plate, and is reflected to the back side, and this reflected light 50 is reflected by the window. Opening 3 of frame 32
1 and enters the rearview mirror 43. Therefore, the driver 42 looks into the rearview mirror 43 and sees the stipple 3.
By reading the contents of the message by 8, it can be confirmed that the message is being displayed by the display section 17 of the light guide plate 9A.

In this case, in the structure of this embodiment, the message indicator light 2
8 to the signal generation switch 44 regardless of the number of messages, and only one switch 44 needs to be provided in the driver's seat, an operation switch panel equipped with a message display section and a switch with an indicator It has the advantage of having a simple structure and being able to be provided at low cost.

FIGS. 5(-) and 5(b) are sectional views of main parts showing other embodiments of the present invention. The figure (a) shows the opening 31 of the window frame 32.
is covered with a filter 60 colored in an appropriate color, and a reflective part 61 is provided on the surface of the extension part 330 of the nine light guide plates, and the reflective part 61 is provided with fine irregularities or stipples as shown in the figure. The part 33 extends from the light guide plate 9A.
The light guided by the room mirror is reflected in one direction. In the same figure (b), the surface of the extension part 33 of the light guide plate 9A is made a slope, and a paint 62 of an appropriate color is applied to the reflection part 6.
3.

The 600 colors of the filters substitute for the message characters displayed on the extensions 33, 34, and 35 of each light guide plate 9A, 9B, and 9C, and are different for each light guide plate.

Similarly, the paint 62 in FIG. 5(b) is applied to each light guide plate 9A, 9B.
.

Each 9C has a different color.

In addition, in FIG. 5, only one light guide plate 9A is shown,
The remaining two light guide plates 9B and 9C are omitted.

FIG. 6 is a sectional view showing another embodiment of the present invention. This embodiment has an open lower opening of 0.7 mm on the front and rear surfaces of the housing 1.
1 and remove the warning display bulb, each light guide plate 9A,
The message display stippling 16, 20.21 formed on the back surface of 9B and 9C allows the light from the message display bulb 13 that can enter the light guide plate to be reflected toward the rear of the vehicle body, thereby displaying a message at the same time. A reflective section is also placed at the front of the vehicle to guide the light to the rearview mirror.

In other words, the light traveling inside the light guide plate is not all reflected toward the surface due to the stippled reflection shape, the angle of incidence, etc., but is almost parallel to the surface of the light guide plate 9B (same for 9A and 9C). Light A hits the slope of the stippling 20 and is reflected on the surface side of the light guide plate 9B, but light B, which is incident at a large angle of incidence on the slope of the stippling 20, shows that the stippling 20 is not a perfect mirror surface. Therefore, it passes through the dots 20, faces the front of the table body from the open lower part 1 of the housing 1, and is guided to the room mirror. Therefore, by looking into the room mirror, it can be confirmed that the display section 20 of the light guide plate 9B is displayed.

In this case, the message letters, etc. are formed with stipples 16, 20, and 21 so that they are a normal image when viewed from the following vehicle, so the image emitted to the interior side (front side of the vehicle body) is the opposite.
This image is reversed by the rearview mirror, so the driver can also see the correct image.

FIG. 7 is a sectional view showing still another embodiment of the present invention. In this embodiment, a light amount controller a is installed on the open lower part 1 of the housing 1.
This embodiment differs from the embodiment shown in FIG. 6 in that a light attenuation film 81 is provided on the opening lower part 2 and the open lower part 2, but the other structures are the same.

The sight controller 80 is intended to reduce the influence of external light and make it easier to read the message characters.The sight controller 80 is designed to reduce the influence of external light and make it easier to read the message characters. It consists of a large number of lenses arranged parallel to the optical axis at predetermined intervals. Light A that is emitted from each of the light guide plates 9A, 9B, and 9C toward the rear of the vehicle passes between the strips 82 and is emitted to the outside, and is larger than 1! with respect to the optical axis. The external light C which is incident at a certain angle of incidence is reflected by the band-shaped body 82 and is prevented from entering into the Hakurangu 1.

There is no need for strong light to be directed to the room mirror, and the amount of light B reflected and emitted toward the front of the vehicle body is reduced by the light attenuation film 81.

〔Effect of the invention〕

As described above, the message indicator light according to the present invention allows a part of the light emitted from the message display bulb and entered into the light guide plate to be emitted toward the rear of the vehicle body by the display section, and the remaining light is directed to the display section or the light guide plate. It was configured so that it was emitted to the front of the military body using a separately provided reflector and guided to the rearview mirror.
When the driver looks in the rearview mirror, he or she can see at a glance which light guide plate is currently displaying the message. Therefore, it is only necessary to dispose one switch for switching the valve near the driver's seat, and the number of wires for the cord can be reduced to one regardless of the number of displayed messages, making the wiring work easy. Furthermore, since there is no need to provide a message display section near the driver's seat, the structure is simple and can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of a message indicator lamp according to the present invention, FIG. 2 is a circuit diagram of a message indicator bulb,
Figure 3 is a diagram showing the inside of the vehicle body, Figure 4 is a perspective view showing the main parts of the light guide plate and housing, and Figures 5 (a) and (b).
) are sectional views showing other embodiments of the extension portion of the light guide plate, FIG. 6 is a sectional view showing another embodiment of the present invention, and FIG. 7 is a sectional view showing still another embodiment of the present invention. , FIG. 8 is a perspective view showing an example of a conventional message indicator light, FIG. 9 is a sectional view of the same indicator light, and FIG. 10 is a perspective view of a light guide plate. 1...Housing, 2...Rear window, 9A
, 9B, 9C...Light guide plate, 10...Lamp for warning display, 13...Lamp for message display, 1B,
20.21 ... Stipple, 17 ... Display section, 18
A, 18B, 23...Light entrance part, 31...Opening part, 33.34, 35...Extension part, 38.39.
40... Stipple, 43... Room mirror, 61.
62...Reflector, 70.71...Aperture.

Claims (1)

[Claims] A housing is arranged inside the rear window and opens to the rear of the vehicle body, and the housing is stacked in the thickness direction and is arranged inside the housing so that the front side faces the rear window. A plurality of light guide plates each having a display section and each having a light entrance section on one end surface, each disposed at the light entrance section of each light guide plate and illuminating the display section of the light guide plate when turned on. A plurality of message display bulbs are provided, and the housing is provided with an opening opening toward the front side of the vehicle body, and a portion of the light emitted from the message display bulbs and incident on a light guide plate corresponding to the bulbs is transmitted. A message display lamp characterized in that the light is reflected to the front side by the display part, and the remaining light is emitted to the back side by the display part or a separately provided reflection part and guided to the room mirror through the opening part.