JP2514635Y2 - Analog clock - Google Patents

Description

[Detailed description of the device]

[0001]

The present invention relates to EL, LED, PD
The present invention relates to an analog timepiece using various self-luminous display elements such as P and VFD, and particularly to an analog timepiece capable of displaying seconds with a simple wiring and circuit structure without adding a segment dedicated to seconds display.

[0002]

2. Description of the Related Art Shoukai 60-76296 (conventional example 1)
The analog timepiece described in (1) has a plurality of radially arranged inner peripheral segments and a plurality of outer peripheral segments that are arranged radially outward of each inner peripheral segment.
In addition, there is a segment consisting of two bars at each position of 12, 3, 6, and 9 o'clock for displaying the time from 1 o'clock to 12 o'clock on the outer peripheral side of the outer peripheral segment, and one at other positions. It has a segment consisting of a bar and is always lit. This analog timepiece displays a short hand on the inner circumference segment and a long hand on the inner circumference segment and the outer circumference segment aligned on the same radiation, but does not have the function of displaying seconds.

Japanese Utility Model Publication No. 61-202091 (conventional example 2)
The analog timepiece described in 1 has an inner peripheral segment and an outer peripheral segment as in the first conventional example, and a symbol segment for displaying a number of 1 to 12 is provided on the outer periphery of the outer peripheral segment. The indications of the long hand and the short hand are the same as in the conventional example 1, and the seconds are displayed only in the outer peripheral segment.

In addition to the conventional examples 1 and 2, there is also an analog timepiece in which a segment for displaying seconds is provided on the outer periphery of the outer peripheral segment.

[0005]

Some conventional analog timepieces cannot display seconds as shown in Conventional Example 1. Even if the seconds are displayed as in the second conventional example, the number of drivers and control ICs for displaying the seconds is increased, but the cost is increased although the number of anodes is the same. Further, if the second display is performed only by the outer peripheral segment, the second display cannot be performed when the second hand or the long hand of the hour display or the minute display overlaps. Furthermore, if a segment for displaying seconds is provided separately, the wiring becomes complicated.

According to the present invention, in an analog timepiece having a plurality of radially arranged inner and outer segments and a symbol segment for time display, the seconds are displayed by simple wiring without increasing the number of display segments or the driver IC. The purpose is to be able to do.

[0007]

An analog timepiece according to the present invention as set forth in claim 1 has 60 inner peripheral segments radially arranged on the center side of the dial and the outer peripheral side of the dial. 60 outer peripheral segments arranged in the same radial pattern for each inner peripheral segment, and a plurality of symbol segments arranged circumferentially on a dial for displaying time are formed by self-luminous display elements, Displaying a short hand on the inner circumference segment and displaying a long hand on the inner circumference segment and the outer circumference segment, blinking once per second while sequentially selecting at least one of the symbol segments for displaying time in a clockwise direction. It is characterized in that the second segment is displayed and the symbol segment which is not selected is constantly lit. An analog timepiece according to a second aspect of the present invention is the analog timepiece according to the first aspect, wherein the self-luminous display element is a fluorescent display tube.

[0008]

In the plurality of symbol segments arranged in a circle on the dial, for example, one or two adjacent segments are blinked once per second and sequentially move clockwise to display the seconds. The symbol segments other than the symbol segment that moves sequentially while blinking for displaying the seconds are always lit.

[0009]

EXAMPLE An example of an analog timepiece using a fluorescent display tube will be described. As shown in FIG. 1, on the dial of the display unit 2 of the analog timepiece 1, 60 rod-shaped inner peripheral segments 3 are radially arranged at equal intervals on the center side. On the outer peripheral side of the dial, a total of 60 short rod-shaped outer peripheral segments 4 are arranged so as to be on the same radiation with respect to each inner peripheral segment. Out of the 60 outer peripheral segments 4, the outer peripheral segments at positions 1 to 12 representing the respective times are particularly shorter than the others. This short 12
Next to the outer peripheral segment 4 of the book, numeral segments 5 of 1 to 12 are arranged as symbol segments for displaying the hour.

Each of these segments 3, 4, 5 is shown in FIG.
The anode conductors 3a, 4 provided on the substrate 6 as shown in FIG.
The phosphor layers 3b, 4b and 5b are attached to a and 5a. Although not shown, each segment 3, 4, 5
A filament cathode or the like is disposed above the substrate, and the container portion is sealed on the substrate 6 to form an envelope. The inside of the envelope that houses the segments 3, 4, 5 and various electrodes is kept in a high vacuum state.

As shown in FIG. 1, in the drive circuit 7 of the display unit 2, the signal from the 1/2 second clock generation circuit 8 is 1
The 1/2 frequency division counter 9 is entered, and the 1/2 frequency division counter 9 outputs a count signal of 1 second.

A count signal of 1 second from the 1/2 frequency dividing counter 9 enters a 1/5 frequency dividing counter 10, and the 1/5 frequency dividing counter 10 displays 0 to 4 seconds, 5 to 9 for displaying seconds. Second, 1
A signal is output every 5 seconds, such as 0 to 14 seconds, ..., 55 seconds to 59 seconds.

The signal every 5 seconds is input to the NAND circuit 11 together with the 1/2 second clock signal from the 1/2 second clock generating circuit 8. The output from each NAND circuit 11 is applied to each of the numerical segments 5 of 1 to 12 via the driver 12 so as to correspond to the second display.

According to such a circuit configuration for displaying seconds, 1
One of the two numeral segments 5 is sequentially selected and blinked to display the seconds. That is, each numerical segment 5 is sequentially turned on for 1/2 second and then turned off for 1/2 second, and is sequentially repeated for 5 seconds. Every minute, the numerical segment "12" blinks for 0 to 4 seconds, and the numerical segment "1" blinks for 5 to 9 seconds. The number segments other than the blinking number segment are always lit.

The signal from the 1/2 frequency dividing counter 9 is 6
It is input to the 0 frequency division counter 13. 60 division counter 1
3 outputs a count signal for each minute such as 0 minutes, 1 minute, ... 59 minutes for displaying minutes. The count signal for each minute is given to each combination of the inner and outer segments 3, 4 through the driver 14 so that a predetermined minute display is performed.

The signal from the 60 frequency division counter 13 is input to the 12 frequency division counter 15. The 12-division counter 15 outputs a count signal for each hour such as 1 o'clock, 2 o'clock, ..., 12 o'clock for hour display. The count signal for each hour is given to the inner peripheral segment 3 via the driver 16 so that the display is performed at a predetermined time.

In the embodiment described above, the static drive is performed in which the segments 3, 4, 5 and the drivers 12, 14, 16 are directly connected to each other to turn them on and off. Therefore, the control electrode is not always necessary.

The display section 2 of the analog timepiece 1 described above can also be made to emit light by dynamic driving. For example,
The radially arranged segments are divided into 6 or 12 fan-shaped regions, a mesh grid is provided for each region, and segments having a corresponding positional relationship are connected to each mesh grid. Then, the mesh grid is scanned, and a display signal can be given to the segment in synchronization with this scanning for display.

Next, another embodiment will be described with reference to FIG. In this embodiment, part of the drive circuit and the configuration of the display unit 2 are the same as in the first embodiment. Of the drive circuit, a circuit portion for displaying seconds, which has a different configuration, will be described.

As shown in FIG. 3, the 1/5 frequency division counter 1
The signal output every 5 seconds from 0 is input to the OR circuit 17 together with the signals of the adjacent time sections. The output from each OR circuit 17 is input to the NAND circuit 11 together with the 1/2 second clock signal from the 1/2 second clock generating circuit 8. Each NAND
The output from the circuit 11 is given to each number segment 5 via the driver 12.

According to such a circuit configuration for displaying seconds, 1
It is possible to sequentially select two adjacent two of the two numeral segments 5 by shifting one by one every 5 seconds, and during selection, both segments can be blinked every ½ second. According to this display method, it is possible to see at a glance that the seconds are displayed between the selected two numeral segments, and further, it is possible to know the elapsed time every second by blinking the numerals.

[0022]

According to the analog timepiece of the invention, the following effects can be obtained. (1) The seconds can be displayed without providing a segment dedicated to the seconds display.

(2) Since the conventional symbol segment is used, the second display can be realized by adding a simple circuit structure.

(3) Since the second display is performed in a segment different from the hour display and the minute display, there is no risk of confusing the hour, minute, and second displays and misidentifying them. can do.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a first embodiment.

FIG. 2 is a cross-sectional view of a display unit according to the first embodiment.

FIG. 3 is a block diagram of a second display circuit in a drive circuit of a second embodiment.

[Explanation of symbols]

 1 Analog clock 3 Inner circumference segment 4 Outer circumference segment 5 Numerical segment as symbol segment

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-52294 (JP, A) JP-A-55-7684 (JP, A) Actually developed JP-A-62-195798 (JP, U)

Claims (2)

(57) [Scope of utility model registration request] 1. A arranged radially toward the center of the dial 6
0 inner peripheral segments, 60 outer peripheral segments arranged on the outer peripheral side of the dial in the same radial pattern with respect to the inner peripheral segments, and peripherally arranged on the dial. A self-luminous display element is used to form multiple symbol segments that display time
And, to display the long hand in the inner peripheral segment and an outer segment and displays the hour hand in the inner peripheral segment, when
The at least one of the symbol segments for displaying the interval is sequentially selected in the clockwise direction, blinking once per second to display the second, and is not selected.
Is an analog clock that is always turned on . 2. The self-luminous display element is a fluorescent display tube.
The analog timepiece according to claim 1.