JP2985052B2 - Alarm clock with luminescent hands - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm clock with a luminescent hand using an EL element.

[0002]

2. Description of the Related Art Conventionally, in an alarm clock, as a means for displaying an alarm time, there are a digital alarm system in which a digital alarm display section is separately provided, and an analog alarm system in which an alarm hand is used to set an alarm time. There is. However, when trying to apply a luminescent hand that emits a pointer to an alarm clock, it is almost limited to a digital guide system. This is because a power supply device for the hands is required to emit the hands, but the use of the analog guide system requires an alarm hand, which makes it difficult to supply power to the hands. That is, if there is no alarm needle, power can be supplied by the sliding contact method using the pointer shaft, but it is difficult to adopt this method if there is an alarm needle.

Accordingly, the present applicant has previously filed Japanese Patent Application No. 5-137.
No. 07 proposes an alarm clock with a light-emitting hand using an analog guide system, which can supply power to the light-emitting hands by a sliding contact method even if there is an alarm hand. This configuration is as follows. That is, two first ring-shaped conductors having two ring-shaped conductors arranged concentrically with the center of rotation on the upper surface and facing the ring-shaped conductor on the lower surface, and the opposing ones being electrically coupled to each other. A pointer having a ring-shaped contact piece, a contact stand fixed to the watch case and provided with a second ring-shaped contact piece opposed to the first ring-shaped contact piece; , The center of rotation is disposed concentrically with the pointer, and the guide needle has a through hole at a position facing each of the two first ring-shaped contact pieces, and the through hole is slidable. And a contact member penetrating through the through hole and protruding from both sides of the through hole, and pressing the first ring-shaped contact piece and the second ring-shaped contact piece, respectively, and electrically connecting them. Consists of

[0004]

However, in the above-mentioned prior art sliding contact system by the present applicant, a sliding area must be secured, and a large diameter is required around the pointer shaft for power supply. become. For this reason, the timepiece becomes unsightly and the configuration becomes complicated, so that there has been a problem that parts and assembly costs are required. Therefore, the object of the present invention is to
It is an object of the present invention to provide an analog timepiece-equipped alarm clock with a light-emitting hand that does not become large around the pointer shaft portion with a simple configuration at a low cost.

[0005]

In order to achieve the above object, an alarm clock with a luminescent hand according to the present invention is provided with a pointer provided with a light emitting means, and power is supplied to the pointer via a power supply means. An alarm hand, a pair of lead frames provided on the lower surface of the alarm hand , and driving of the light emitting means
And a printed circuit board having a circuit, printed circuit board,
It is provided on the front of the timepiece machine body and has a pair of sliding patterns for power supply . It said slide putter with contact spring pieces are provided on one of a pair of lead frames, which have a circular movement trajectory corresponding to one of the sliding patterns
And elastic contact to down, the contact spring piece is provided on the other lead frame of the pair are both elastic contact with the sliding pattern as having a circular movement trajectory corresponding to the other sliding pattern.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, an outline of an alarm clock with a luminescent hand according to the present invention will be described. A dial 10 is provided on the right side of FIG. 1 which is a front side of the clock, and a second hand 1, a minute hand 2 and an hour hand are provided in front of the dial. (Indicator) 3 is arranged so as to be rotatable concentrically, and an alarm hand 4 is provided behind the hour hand 3 so as to be rotatable concentrically. The second hand 1 is a clock train B provided inside the upper case 6 and the lower case 7.
As a result, the driving force is transmitted to the second hand shaft 1a to be driven to rotate. Similarly, the minute hand 2 is driven by the clock wheel train B to reduce the driving force to the second hand shaft 1a and transmitted to the minute hand pipe 2a to be driven to rotate. The hour hand 3 is similarly rotated by the clock wheel train B, and the driving force to the minute hand pipe 2a is reduced and transmitted to the hour hand pipe 3a to be driven to rotate. The alarm hand 4 can set an alarm at a desired time via an alarm wheel 5 by turning an alarm hand (not shown). On the rear side of the alarm vehicle 5, an alarm mechanism C is provided.

Next, a specific configuration of each component will be described. The hour hand 3 is, as shown in FIGS. 2A, 2B and 2C, an example of a light emitting means having a contact hole 30 made of an insulating plastic material having a shaft hole and a partially cut-out central hole. A needle part 32 formed of an EL element as an example, a double-sided board K1 having two first ring-shaped patterns 31 and 31a described later on its surface, and a pair of lead frames 33 and 3
3a. The hour hand 3 has a center hole of the needle part 32 overlapped with a shaft hole of the contact base 30, and the contact base 30 and the needle part 32 are arranged with a pair of lead frames 33, 33a on the needle part side. Board K1 and a pair of lead frames 3
3, 33a and are integrally formed.

[0008] As shown in FIG.
It has a ring shape with a shaft hole, and one end (the right side in FIG. 1) of the hour hand pipe 3a is fitted and connected into the shaft hole. A plurality of (three in this embodiment) columnar projections 30a are formed on the upper surface of the contact stand 30 (the left surface in FIG. 2B) at a position equidistant from the center of rotation. On the upper surface of the contact stand 30, a disc-shaped double-sided board K
1 is fixed so that a center hole provided in the center is concentric with an axis hole of the contact stand 30.

As shown in FIGS. 3A and 3B, the contact block 3
On the upper surface inside the through-hole of the double-sided board K1 inserted by the zero projection 30a, one of the first ring-shaped patterns 31 made of a substantially circular conductive member is provided concentrically with the center of the center hole. In addition, the other upper surface 31a of the first ring-shaped pattern made of a substantially circular conductive member concentrically with the center of the center hole is provided on the outer upper surface of the through hole of the double-sided substrate K1. Double-sided board K1
A connection pattern K1a is formed on the back surface of the lead frame so that a contact piece 36 of one of a pair of lead frames 33 described later resiliently contacts the connection pattern K1a. Is electrically connected to one of the first ring-shaped patterns 31 by the conductive path R1. Further, a connection pattern K1b is formed on the back surface of the double-sided board K1 so that the contact piece 36a of the other side 33a of the pair of lead frames elastically contacts. The connection pattern K1b is formed on a part of the outer peripheral wall. It is electrically connected to the other 31a of the first ring pattern by the conductive path R1a made of a member. As shown in FIGS. 2A and 2B, the base end 32 a of the needle portion 32 is formed on the lower surface of the contact base 30 by aligning a center hole provided in the base end with a shaft hole of the contact base 30. It is stuck.

[0010] Needle portion 32 entirely composed of EL elements
In this example, a transparent electrode layer 32b, a light emitting layer, an insulating layer, and a back electrode layer 32c are sequentially formed on the back surface of a translucent resin plate. The translucent resin plate is made of a material having sufficient rigidity, such as an acrylic resin, and has a transparent electrode layer 32b adhered to the back surface thereof by vapor deposition of ITO by vacuum vapor deposition or sputtering. A luminescent layer is formed on the back surface of the transparent electrode layer 32b by printing luminescent ink. As a phosphor constituting the luminescent ink, for example, zinc sulfide (ZnS) doped with Cu is used. In addition, in consideration of moisture resistance, a fluororesin binder in which a copolymer of vinylidene fluoride and propylene hexafluoride was previously dissolved in a solvent, methyl ethyl ketone, was used as a binder, and a mixture of a phosphor and a fluororesin binder was used as a luminescent ink. I'm using

[0011] The insulating layer is formed of a high dielectric substance and a fluororesin layer. As a high dielectric substance, barium titanate (BaTiO3) is used, mixed with the above-mentioned fluororesin binder and stirred in consideration of moisture resistance, and used as an insulating ink. The back electrode layer 32c was formed by mixing carbon powder, which is a conductor, with a polyester resin, and printing a carbon ink on the insulating layer, to which a binder of a fluororesin binder constituting the light emitting layer and the insulating layer was added. Things. This binder penetrates into the insulating layer and the light emitting layer from the back electrode layer 32c during heating and drying, and binds the fluororesin in the insulating layer and the light emitting layer densely, so that an EL element having high moisture resistance is obtained. I have.

As shown in FIG. 2A, a pair of lead frames 33, 33a opposed to each other about a center line in the longitudinal direction of the needle portion are provided on the lower surface of the proximal end 32a of the needle portion 32. . The pair of lead frames 33, 33a are made of a thin metal plate, and are integrally formed with spring pieces 34, 34, 34a, 34a each having a tip as a contact point. At the upper end of one lead frame 33, a contact piece 35 is formed, and this contact piece is in elastic contact with the transparent electrode layer 32b of the needle portion 32. At the upper end of the other lead frame 33a, a contact piece 35a is formed, and this contact piece is in elastic contact with the back electrode layer 32c of the needle portion 32.

At the lower end of one lead frame 33, a contact piece 36 is formed, and this contact piece elastically contacts the connection pattern K1a of the double-sided board K1. A contact piece 36a is formed at the lower end of the other lead frame 33a, and this contact piece elastically contacts the connection pattern K1b of the double-sided board K1. As described above, the lead frames 33 and 33a provided on the lower surface of the base end of the needle portion 32 correspond to the first ring-shaped patterns 31 and 31a of the double-sided board K1 provided on the upper surface of the contact stand 30, respectively. Conducted with things.

The spring piece 34 of one lead frame 33,
The tip of 34 has a circular movement trajectory corresponding to one 41 of the second ring-shaped pattern of the double-sided board K2 fixed to the upper surface of the alarm needle 4 described later, and is constantly in contact with it. Spring piece 34 of the other lead frame 33a
a, 34a are connected to the other side 4 of the second ring-shaped pattern of the double-sided substrate K2 fixed to the upper surface of the alarm needle 4 described later.
It has a circular movement trajectory corresponding to 1a, and is always in elastic contact with it.

A pair of hour hand lead frames 33, 33a
The spring pieces 34, 34a, the contact pieces 35, 35a, and the second ring-shaped patterns 41, 41a of the alarm hand 4 constitute power supply means D for supplying power to the hour hand 3.
Power is supplied to the hour hand 3 from the alarm hand 4 via the power supply means.

The configuration of the hand portion of the minute hand 2 is substantially the same as the configuration of the hand portion of the hour hand, and since it is a light emitting hand, as shown in FIG. Pair of lead frames 33, 3 provided on the lower surface of the hour hand 3
3a, a pair of lead frames substantially identical to each other are provided, and each of the pair of lead frames has two spring pieces 21, 21a each having a contact at the tip.
Are integrally formed.

As shown in FIG. 1, since the alarm hand 4 is not a light emitting hand, the alarm hand 4 is extended outwardly from a contact base 40 made of an insulating plastic material having a shaft hole to integrally form a needle part. The upper surface of the alarm wheel 5 is fitted and connected to the shaft hole of the alarm hand 4. On the upper surface of the contact stand 40,
As shown in FIGS. 4B and 4C, a plurality of columnar protrusions 40a are formed at positions equidistant from the center of rotation.

A disk-shaped double-sided board K2 is inserted into the projection 40a on the upper surface of the contact base 40, like the hour hand 3. The double-sided board K2 has the same shape as the double-sided board K1. For this reason, as shown in FIGS. 4B and 4C, the upper surface inside the through hole of the double-sided board K2 inserted by the protrusion 40a of the contact stand 40 is substantially concentric with the center of the center hole. One of the second ring-shaped patterns 41 made of a circular conductive member is provided, and a second ring-shaped pattern made of a substantially circular conductive member concentrically with the center of the center hole is provided on the upper surface outside the through hole. The other 4
1a is provided. On the back of the double-sided board K2,
A connection pattern K2a is formed in which the contact piece 44 of one of the pair of lead frames elastically contacts, and the connection pattern K2a
Is electrically connected to one side 41 of the second ring-shaped pattern by a conductive path R2 formed of a conductive member formed on a part of the peripheral wall of the through hole. On the back surface of the double-sided board K2, a connection pattern K2b is formed in which the contact piece 44a of the other side 42a of the pair of lead frames elastically contacts. The connection pattern K2b is formed by a conductive member formed on a part of the outer peripheral wall. Conductive path R2
a conducts to the other 41a of the second ring-shaped pattern.

4 (a) and 4 (b)
As shown in FIG. 5, a pair of lead frames 42 and 42a opposed to each other with respect to the longitudinal center line of the needle portion are provided. The pair of lead frames 42, 42a are made of a thin metal plate, and are integrally formed with spring pieces 43, 43, 43a, 43a each having a contact point at the tip. At the lower end of one lead frame 42, a contact piece 4
The contact piece is in elastic contact with the connection pattern K2a of the double-sided board K2. The other lead frame 42
A contact piece 44a is formed at the lower end of a, and this contact piece elastically contacts the connection pattern K2b of the double-sided board K2.

The spring piece 43 of one lead frame 42,
The distal end of 43 has a circular movement trajectory corresponding to one of the power supply sliding patterns 81 formed on the upper surface of the printed circuit board 8 described later, and is always in elastic contact therewith. The tips of the spring pieces 43a, 43a have a circular movement trajectory corresponding to the other 81a of the power supply sliding pattern formed on the upper surface of the printed circuit board 8, and are always in elastic contact therewith. The alarm car 5 is shown in FIG.
As shown in the figure, the cylindrical body is rotatably fitted to the outer periphery of the hour hand pipe 3a, and its rotation center is arranged concentrically with the alarm hand 4.

As shown in FIGS. 1 and 5, the printed circuit board 8 has a pointer shaft J composed of an hour hand pipe 3a and a minute hand pipe 2a.
Is fixed to the front surface of the lower case 7 of the timepiece machine body T by a mounting screw N with the shaft hole passing therethrough aligned with the center of the pointer shaft J. On the outer periphery of the upper surface of the shaft hole of the printed circuit board 8, two substantially ring-shaped power supply sliding patterns 81,
81a is arranged concentrically with the center of the shaft hole of the printed circuit board 8. One of the spring pieces 43, 43 is attached to one of the power supply sliding patterns 81, and the other power supply slide pattern 81a.
, The other spring pieces 43a, 43a are in elastic contact with each other slidably.

The printed circuit board 8 has a sliding pattern 81,
Extraction pattern 81 extracted from each of 81a
1, 81a1 and the extraction patterns 811, 81a
1, an on / off switch S and an EL drive circuit (not shown) composed of an electronic circuit element for emitting an EL drive signal to the printed circuit board 8 when the switch is turned on.

Next, the operation of supplying electric power to the EL elements of the minute hand 2 and the hour hand 3 to emit light will be described. When the changeover switch S is turned on, as shown in FIG. 1, the drive signal supplied from the power supply sliding patterns 81, 81a of the printed circuit board 8 passes through the two spring pieces 43, 43a in order. And supplied to the second ring-shaped patterns 41 and 41a. Next, through the spring pieces 34 and 34a of the hour hand 3,
As shown in FIG. 2A, the liquid crystal is supplied to the transparent electrode layer 32b and the back electrode layer 32c of the EL element of the hour hand 3. As a result, a voltage is applied to the light emitting layer of the hour hand 3 to emit light. At the same time, the driving signal is also supplied to the first ring-shaped patterns 31 and 31a, so that the transparent electrode layer of the EL element of the minute hand 2 is supplied through the spring pieces 21 and 21a of the minute hand 2 in the same manner as the hour hand 3. Is supplied to the back electrode layer. Thus, a voltage is applied to the light emitting layer of the minute hand 2 to emit light.

[0024]

According to the present invention, a pointer provided with a light emitting means, an alarm hand to which power is supplied to the pointer via a power supply means, and a pair of alarm hands provided on a lower surface of the alarm hand. a lead frame, and a <br/> printed circuit board having a drive circuit of the light emitting means, the printed circuit board has a pair of sliding pattern for power supply with is provided on the front face of the watch machine body, 1 and elastic contact to the sliding pattern with contact spring pieces are provided on one lead frame pair will have a circular movement trajectory corresponding to one of the sliding patterns, provided on the other lead frame of the pair contact of a spring piece as having a circular movement trajectory corresponding to the other sliding <br/> dynamic pattern
Since both are in elastic contact with the sliding pattern, the pointer shaft does not become large, so that the alarm clock with the luminescent hands does not become unsightly. Also, since an analog watch with an illuminated hand can be manufactured with a simple configuration that requires only a slight change to the usual analog guide mechanical body, an alarm clock with a luminescent hand can be provided at a low cost with a simple configuration. Can be.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

2A is a bottom view of the hour hand, FIG. 2B is a longitudinal sectional view of the hour hand, and FIG. 2C is a top view of the hour hand.

3A is a top view of a double-sided board, and FIG. 3B is a bottom view of the double-sided board.

4A is a bottom view of the alarm hand, FIG. 4B is a longitudinal sectional view of the alarm hand, and FIG. 4C is a top view of the alarm hand.

FIG. 5 is a top view of a printed circuit board fixed to a lower case.

[Explanation of symbols]

3 Hand (hour hand) 32 Light emitting means (EL element) 33, 33a, 34, 34a, 35, 35a, 41, 4
1a Power supply means 4 Alarm needle 42 One lead frame 42a The other lead frame 43, 43a Spring piece 8 Printed circuit board 81 Sliding pattern for feeding one printed board 81a Sliding pattern for feeding the other printed board D Power supply means T Clock machine

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G04B 19/30 G04B 23/02 G04C 17/00

Claims (1)

(57) [Claims] 1. A pointer provided with a light emitting means, an alarm hand to which power is supplied to the pointer via a power supply means, a pair of lead frames provided on a lower surface of the alarm hand, and a light emitting means. Printed circuit board having a driving circuit of
The provided, the printed circuit board has a pair of sliding pattern for power supply with is provided on the front face of the watch mechanical body, the contact spring piece is provided on one lead frame of the upper Symbol pair is to resilient contact to the sliding pattern while have a circular movement trajectory corresponding to one of the above Kisurido pattern, the contact spring piece is provided on the other lead frame of the upper Symbol pair, upper Symbol luminescent hands alarm clock, characterized in that in elastic contact to both said slide pattern as having a circular movement trajectory corresponding to the other sliding pattern.