JPS647402Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a totalizer that measures and displays, for example, the distance traveled by a vehicle by rotating a plurality of character wheels sequentially from the lower digit to the upper digit. It is designed to guide the illumination light beam and display the displayed numerical value by illumination.

Conventionally, mileage totalizers attached to the driver's instrument panel have been designed to read the numerical value displayed on the character wheel of the totalizer through a window provided on the display board.
In this case, the display numerical value is generally illuminated by indirect light from an illumination light source at night or the like.

Therefore, if the number of character wheels on the totalizer increases, a problem may arise in that the number cannot be illuminated uniformly and the displayed number cannot be easily read.

Therefore, this invention was made to solve the above-mentioned problem, and aims to improve visibility at night by transmitting illumination of the displayed value of the totalizer from inside.

Embodiments of this invention will be described below based on the accompanying drawings.

In FIGS. 1 and 2, a shaft 2 is installed on a frame 1, and a plurality of character wheels 3 are rotatably inserted and held in the shaft 2.

Between the character wheels 3, there is a pinion holder 4.
The character wheels 3 are meshed with each other by a pinion gear 5 rotatably supported by the pinion holder 4 .

Further, a display plate 6 having a display window 6A is formed on the front side of the character wheel 3 of the totalizer to cover it.

Therefore, as the vehicle travels, first the character wheel 3 of the lowest digit is driven to rotate, and each rotation of the character wheel 3 of the lowest digit engages with the pinion gear 4, thereby causing the character wheel 3 of the lowest digit to engage with the pinion gear 4. The character wheel 3 of the next digit is advanced one step, and the cumulative distance traveled by the vehicle, such as a car, is displayed.

Each of the character wheels 3 is made of a transparent material such as polycarbonate resin, acrylic resin, or AS resin, and a display character portion 3A is transparently formed on each outer circumferential surface of the character wheel 3, and a display surface 3B other than the display character portion 3A is formed. For example, the display character portion 3A is made white, and the display surface 3B other than the display character portion 3A is coated by printing with black or other ink.

Further, the pinion holder 4 is made of a transparent material like the character wheel 3, and at least the display window 6 of the display board 6 is provided on the side surface of the pinion holder 4.
A light guide portion 7 is formed by protruding a portion of the character wheel 3 located below the display dial portion 3A and the display surface 3B.

Further, an illumination light 8 is disposed on the side of the character wheel 3 and opposite to the light guide portion 7 of the pinion holder 4.

As in the above configuration, among the character wheel 3, pinion holder 4, and pinion gear 5 that control the transmission drive configuration of the totalizer, the character wheel 3 and the pinion holder 4
is made of a transparent light-transmissible material, and the outer peripheral surface of the character wheel 3 is transparent to the display character portion 3A;
The display surface 3B other than the display character section 3A is formed to be non-transparent, and the side surface of the pinion holder 4 has at least a display surface 3A adjacent to the display character section 3A of the character wheel 3 located below the display window 6A of the display board 6 and the display surface 3B. By protruding the portion to form the lead-out portion 7, the light beam from the illumination lamp 8 enters the light guide portion 7 of the pinion holder 4, and while being reflected from the light guide portion 7, the displayed characters 3A of the character wheel 3. is illuminated. Thereby, at night or the like, the displayed numerical value on the character wheel 3 can be easily transmitted and illuminated through the display window 6A of the display board 6, and the visibility of the totalizer can be improved.

Further, it is possible to configure a general totalizer mechanism without adding any parts such as a separate illumination light guide or a reflector, and it is possible to form an inexpensive and easy-to-assemble totalizer illumination device.

Furthermore, in order to improve the transmission illumination efficiency of each character wheel 3, if the lower surface of the light guide section 7 is formed with a reflective surface 7A that is roughened or lens cut, it is possible to improve the transmission efficiency. .

Note that in the above-described embodiment, the display text portion is transparent and the other display surfaces are non-transparent, but the same effect can be obtained even if the display text portion is made opaque and the other display surfaces are transparent. It is possible to obtain the following effects.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention, with Figure 1 being a partial sectional view showing the overall structure of the totalizer, and Figure 2 being an enlarged sectional view of the main parts of Figure 1. . Frame 1, shaft 2, character wheel 3, display character section 3A, display surface 3B, pinion holder 4, pinion gear 5, display board 6, display window 6A, light guide section 7,
Reflective surface 7A, illumination light 8.

Claims (1)

[Scope of utility model registration request] A plurality of character wheels are inserted and supported on the shaft, and a pinion holder supporting a pinion gear is inserted between the character wheels, and the displayed value of the character wheel is read through the display window of the display board arranged on the surface side of the character wheel. In a totalizer that can be read visually, each of the character wheels is made of a translucent material, and the outer circumferential surface of the character wheel has a material that transmits either the displayed character part or the display surface other than the displayed character part. The pinion holder is made of a transparent material, and at least the display portion of the character wheel located below the display window and the inner side portion of the display surface are protruded from the side surface of the pinion holder. 1. An illumination device for an integrated meter, characterized in that a light section is formed, and an illumination lamp is disposed at an end of the light guide section.