JPH05264748A - Wall clock - Google Patents

Abstract

PURPOSE:To improve display brightness by taking external light to improve visibility of a clock display without using an illuminating device inside a clock. CONSTITUTION:A fluorescent material is mixed into a display dial 14 of a clock, and a reflection function of the fluorescent material is used to cause displayed characters 17 applied on the dial 14 to have sufficient brightness by external light during day and night. Then a brightness contrast against parts other than the displayed characters 17 is improved, and further brightness due to the external light is improved by mixing the fluorescent material also into an indicator 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall clock suitable for hanging on a ceiling such as a station building or a platform.

[0002]

2. Description of the Related Art A general wall clock suspended on, for example, a platform in a station yard allows its clock display to be viewed at any time of the day or night. For example, as shown in FIG. 1 is composed of a plate material capable of transmitting light, and on the back side of the dial 1 is provided a lighting device 2 for transmitting and illuminating the dial, and in the daytime, the clock display, that is, the time, is displayed by the dial. Recognizes the time by visually observing the reflected light from the outside light, and at night, turning on the lighting equipment installed inside the watch and illuminating the dial with the lighting from this lighting equipment 2. It is something that can be done.

[3] 3 is a clock movement, 4 is a pointer, 5
Indicates a transparent watch cover located in front of the display plate 1 and the hands 4.

[0004]

However, in such a wall clock having such a conventional structure, a luminaire for transmitting and illuminating the dial is required to be installed in the timepiece at night, so that the timepiece main body is required. However, there is a problem that the power supply equipment for operating the lighting equipment is required, and the equipment cost is increased. Furthermore, there is a problem in that the illumination bulb is cut off due to long-term use of the timepiece and must be replaced with a new illumination bulb each time, which causes trouble and troublesomeness in the replacement work.

Further, in the conventional timepiece, it is difficult to confirm the time display when the internal lighting is delayed even though the amount of extraneous light is insufficient, such as at dusk. There were also points.

[0006]

The present invention has been made in view of the above-mentioned conventional problems, and a fluorescent substance is mixed in the display plate of the timepiece, and by the reflecting action of this fluorescent substance,
The display characters on the display plate are sufficiently bright by the external light in the day and night, and the brightness contrast with the part other than the display characters is enhanced.Furthermore, the fluorescent substance is mixed in the pointer to increase the brightness by the external light. An object of the present invention is to provide a wall clock that has a structure that can enhance the display brightness by collecting external light and enhance the visibility of the time display without using a lighting device inside the timepiece.

[0007]

The present invention will be described in detail below with reference to the embodiment shown in FIG.

Reference numeral 11 is a timepiece movement, and a pointer shaft 12 which is disbursed from the movement 11 is provided with a pointer 13 formed of a resin in which a fluorescent substance is mixed in a transparent resin. Reference numeral 14 is a timepiece display plate located behind the hands 13, and the structure of the display plate 14 is as shown in FIG.
And a transparent transparent dial main body 16 in which a fluorescent substance 15 which is a colored or colorless fluorescent dye or fluorescent pigment is mixed with a transparent resin such as acrylic, polycarbonate, styrene, vinyl chloride, etc. On the back surface of the display unit 16, there is provided a display unit 17 in which numbers, scales and the like are displayed by printing means using reflective white paint. A semi-transparent dark-colored smoke plate 18 that limits the amount of light transmission is superposed on the front surface side of the display plate 14. On the back side of the display plate 14, a dark-colored light-blocking plate 19 for blocking the light transmitted from the front side of the display plate 14 to the back side is superposed.

The structure of this embodiment has been described above. Next, the operation thereof will be described. External light is incident on the display plate 14 with its light transmission amount being limited by the smoke plate 18. A part of the incident external light becomes colored reflected light due to reflection by the fluorescent substance 15 in the display plate 14, reaches the display portion 17 of the display plate and its edges, and is reflected by the display portion 17. The light is emitted toward the surface of the display plate, and the reflective display of the display unit 17 is performed. Most of the reflected light totally reflected in the display plate 14 is guided to the edge of the display plate 14, but a part of the reflected light is diffusely reflected in the display plate 14 and is displayed on the display unit of the display plate 14. Since the light is radiated from the surface parts other than 17, the brightness of the reflection of the display part 17 on the surface of the display part 14 and the diffused reflection on the background other than the display part 17 on the surface slightly decreases, but in the present embodiment, Due to the action of the smoke plate 18 superposed on the surface of the display plate, weak diffuse reflection light generated particularly in the background part other than the display part of the display plate 14 is shielded, and as a result, the display part 17 and the background part are separated from each other. The brightness difference becomes remarkable, and the brightness contrast of the display unit 17 is enhanced.

Further, since the shading plate 19 is superposed on the back side of the display plate 14, the light incident on the inside of the display plate 14 from the front side of the display plate 14 by the action of the dark shading plate 19 is displayed. It is possible to suppress transmission to the back side of the display unit 14 and to increase the brightness contrast of the display unit 17 by the dark color action thereof.
And, the contrast with the background is further enhanced.

Further, in the present embodiment, since the fluorescent substance is also mixed inside the pointer 13, the pointer 13
Is a combination of the display plate 14 having the display portion 17 having a high brightness contrast and thus the pointer 13 generating the brightness of the fluorescent substance, thereby obtaining a wall clock excellent in visibility. It is what is done.

Therefore, according to the wall clock of this embodiment, when the display plate 14 and the pointer 13 in which the fluorescent substance is mixed receive external light, the display plate and the pointer 13 have sufficient brightness for displaying. , Without interior lighting
Since the effective display can be performed day and night, it is possible to provide a wall clock that is particularly economical. In addition, the display board 1
The smoke plate 18 is superposed on the front side of 4 and the dark-colored light-shielding plate 19 is superposed on the back side thereof, so that the brightness contrast of the display section 17 provided on the display board 14 is improved and the display section 17 by reflected light is provided. The display clarity of is further improved.

[0013]

As described above, according to the present invention, the transparent resin mixed with the fluorescent substance 15 is formed into a plate shape, and the display portion 17 such as scales and numbers is formed on the back surface of the plate with a paint having a reflective property. A dial 14 provided with the semi-transparent dark-colored smoked plate 18, which is superposed on the front side of the dial 14.
A dark-colored light-shielding plate 19 overlaid on the back side of the dial 14;
Since the wall clock is provided in front of the dark-colored smoke plate 18 and has the pointer 13 in which the fluorescent substance is mixed in the transparent resin, the display plate in which the fluorescent substance is mixed is provided. 14 and the pointer 13 receive external light, the display plate and the pointer 13 have sufficient brightness for displaying, and can be effectively displayed at day and night without installing lighting equipment, which is particularly economical. An excellent wall clock can be provided. In addition, the display board 14
By overlapping the smoke plate 18 on the front side and the dark-colored light-shielding plate 19 on the back side, the brightness contrast of the display unit 17 provided on the display plate 14 is improved, and the display unit 17 is reflected by the reflected light. The effect that the display clarity is further enhanced is obtained.

[Brief description of drawings]

FIG. 1 is an explanatory view of a conventional example timepiece.

FIG. 2 is an explanatory view of a timepiece according to the embodiment of the invention.

FIG. 3 is an explanatory diagram of a dial plate configuration according to the embodiment of the present invention.

[Explanation of symbols]

 11 ... Clock movement 12 ... Pointer shaft 13 ... Pointer 14 ... Display plate 15 ... Fluorescent material 16 ... Dial plate body 17 ... Display unit 18 ... Smoke plate 19 ... Dark-colored light-shielding plate

Claims (1)

[Claims] 1. A character formed by molding a transparent resin mixed with a fluorescent substance (15) into a plate shape, and further providing a display portion (17) such as a scale or a number on the back surface of the plate with reflective paint. The plate (14), a semi-transparent dark smoked plate (18) overlaid on the front side of the dial (14), and a dark light-shielding plate (1 overlaid on the back side of the dial (14).
A wall clock comprising: 9) and a pointer (13) located in front of the dark-colored smoke plate (18) and having a fluorescent substance mixed in the transparent resin.