JP2015025789A - Timepiece device with illumination - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timepiece device with illumination in which indicators, indexes, and the like can be efficiently illuminated.SOLUTION: The timepiece device with illumination includes a plurality of light sources 300 arranged concentrically around an indicator revolving shaft, and a first light guide, a second light guide 11, and a third light guide 12 which are arranged in this order on the front side of the light sources. The first light guide includes a reflecting surface part 401 for causing light from the light sources to impinge on the first light guide by reflecting the light into the first light guide and a lens shape part 402 for condensing the light from the light sources to project the light frontward. The second light guide 11 constitutes an hour hand and includes an hour hand reflecting surface part 110 for causing the light to impinge on the second light guide 11 by reflecting the light into the second light guide 11 and a lens shape part 111 for projecting the light frontward. The third light guide 12 constitutes a minute hand and includes a minute hand reflecting surface part 120 for causing the light projected from the lens shape part 111 of the second light guide 11 to impinge on the third light guide 12 by reflecting the light into the third light guide 12.

Description

  The present invention relates to a timepiece device in which hands, indicators on a dial, and the like are illuminated by light from a light source.

  There is known a timepiece device in which a sensor detects a nighttime or a dark place, and a pointer, a dial index or the like is illuminated by light from a light source.

  As such an illuminated timepiece device, a device that guides the movement's rotating shaft and gears with a transparent light guide member, or a device that illuminates a pointer or a dial indicator using a plurality of light sources has been developed. (Patent Documents 1 to 3). A timepiece device that illuminates the dial itself is also known (Patent Documents 4 to 6).

JP 2013-76639 A JP 2006-300787 A JP 2000-9859 A Japanese Patent No. 5189579 JP 2013-29336 A JP 2011-203157 A

  In the illuminated timepiece device in which the pointers and dial indicators described above are illuminated by light from the light source, the rotation shaft and gear of the movement are guided by a transparent light guide member. Must be developed and cannot be achieved with a general-purpose movement.

  In addition, lighting a pointer, dial index, etc. using a plurality of light sources has the advantage of a large degree of freedom in illumination in the case of a plurality of light sources, but has the disadvantage of being expensive.

  On the other hand, when there is one system of light sources, it is necessary to solve how to emit the pointers, dial indicators, etc. simultaneously with the one system of light sources. Further, when the light source is one system, in addition to the above-described simultaneous light emission, it is necessary to illuminate the pointer, the index, and the like.

  Therefore, even if the light source has one system, the present invention can simultaneously emit a pointer, a dial indicator, and the like with the one light source, and efficiently illuminate the pointer, the index, etc. It is an object of the present invention to provide an illuminated timepiece device that can perform the above.

When the invention described in the first claim of the present application is described with the reference numerals used in the embodiments, a plurality of light sources 300 and 300 arranged concentrically around the pointer rotation axis,
A first light guide (light guide plate 400), a second light guide 11 and a third light guide 12 sequentially disposed on the front side of the light source 300;
The first light guide is provided at a location corresponding to the plurality of light sources 300, and reflects the light from the light source into the first light guide to enter the light, and the plurality of light sources. A lens-shaped portion 402 that is provided at a location corresponding to the light source and collects light from the light source and projects it in the front direction.
The second light guide 11 constitutes an hour hand, and the light projected from the lens-shaped portion 402 of the first light guide is reflected and enters the second light guide 11. An hour hand reflecting surface portion 110 for causing light to illuminate, and a lens shape portion 111 for condensing and projecting light projected from the lens shape portion 402 of the first light guide in the front direction,
The third light guide 12 constitutes a minute hand, and reflects light projected from the lens-shaped portion 111 of the second light guide 11 into the third light guide 12. It is an illuminated timepiece device having a structure including a minute hand reflecting surface portion 120 for entering light.

  The invention described in claim 2 of the present application is a configuration in which a dial plate 10 is provided on the front side of the first light guide to receive the light from the first light guide to illuminate the indicator 101. The illuminated timepiece device according to 1.

  The invention described in claim 3 of the present application is the illuminated timepiece device according to claim 1, wherein the first light guide is provided with an index 101 to form a dial.

  According to the fourth aspect of the present invention, the hour hand reflecting surface portion 110 of the second light guide 11 serving as the hour hand transmits the light projected from the lens shape portion 402 of the first light guide to the hour hand. Hour hand first reflecting surface 110a that is reflected at one rotational position and introduced into the second light guide, and hour hand second reflecting surface that is reflected at the other rotational position of the hour hand and introduced into the second light guide 11. 110b. The illuminated timepiece device according to claim 1, wherein the timepiece device is configured to have 110b.

  In the invention described in claim 5 of the present application, the minute hand reflecting surface portion 120 of the third light guide body 12 serving as the minute hand reflects the light projected from the lens shape portion 111 of the second light guide body 11. The minute hand first reflecting surface 120a that is reflected at one rotational position of the minute hand and introduced into the third light guide 12, and the second hand that is reflected at the other rotational position of the minute hand and introduced into the third light guide 12. The illuminated timepiece device according to claim 1, further comprising a reflecting surface 120 b.

  According to the first aspect of the present invention, the first light guide body (light guide plate 400) includes the reflection surface portion 401 and the lens shape portion 402. Therefore, the light from the light source 300 is reflected by the reflection surface portion 401. The light is reflected by the first light guide so as to enter the light, so that the first light guide emits light, and the light from the light source 300 is condensed by the lens-shaped portion 402 and projected in the front direction. Light can be irradiated to the hour hand which is the second light guide 11. Furthermore, since the second light guide 11 includes the hour hand reflecting surface portion 110 and the lens shape portion 111, the light projected by the hour hand reflecting surface portion 110 is reflected into the second light guide 11 to be incident. Accordingly, the second light guide 11 emits light, and the lens-shaped portion 111 condenses the projected light and projects it in the front direction, whereby the light is applied to the minute hand as the third light guide 12. Can be irradiated. In addition, since the third light guide 12 includes the minute hand reflecting surface portion 120, the projected light is reflected by the minute hand reflecting surface portion 120 into the third light guide 12 and thus incident. 3 The light guide 12 emits light. In this way, the light from the light source 300 can cause the first light guide body, the second light guide body 11 and the third light guide body 12 that are sequentially arranged to emit light simultaneously, and can be efficiently illuminated. It will be possible.

  According to the invention described in claim 2 of the present application, since the dial plate 10 having the index 101 is provided on the front side of the first light guide, the light from the first light guide is received. In response, the indicator 101 of the dial 10 is illuminated.

  According to the third aspect of the present invention, since the dial is configured by providing the first light guide with the index 101, the first light guide itself is the character without providing a separate dial. Can function as a board.

  According to the fourth aspect of the present invention, the hour hand reflecting surface portion 110 of the second light guide 11 serving as the hour hand transmits the light projected from the lens-shaped portion 402 of the first light guide to the hour hand. The hour hand first reflecting surface 110a that is reflected at one rotational position and introduced into the second light guide, and the hour hand second reflecting surface 110b that is reflected at another rotational position of the hour hand and introduced into the second light guide 11. Therefore, even when the hour hand is at an appropriate rotational position, light can be guided to the inside of the second light guide 11 as the hour hand by these reflecting surfaces, and accordingly, the appropriate rotational position can be obtained. In this case, the hour hand can also emit light.

  According to the invention described in claim 5 of the present application, the minute hand reflecting surface portion 120 of the third light guide body 12 serving as a minute hand emits the light projected from the lens shape portion 111 of the second light guide body 11. The minute hand first reflecting surface 120a that is reflected at one rotation position and introduced into the third light guide 12, and the second hand second reflection that is reflected at another rotation position of the minute hand and introduced into the third light guide 12. Since the surface 120b is provided, it is possible to guide light into the third light guide body 12 serving as the minute hand by these reflecting surfaces even when the minute hand is at an appropriate rotational position. Even in the rotational position, the minute hand can emit light.

It is a front view which concerns on the Example of this invention and shows the timepiece with illumination. It is a longitudinal cross-sectional view which shows the timepiece with illumination concerning the Example of this invention. It is a figure which shows the movement, circuit board, and light source which are related to the Example of this invention, and are used for a timepiece with illumination, (1) is a front view, (2) is a longitudinal cross-sectional view. It is a longitudinal cross-sectional view which shows the movement, circuit board, light source, and 1st light guide which are related to the Example of this invention and are used for the timepiece with illumination. It is a longitudinal cross-sectional view which shows the movement, circuit board, light source, 1st light guide, and 2nd light guide (hour hand) which are based on the Example of this invention and are used for a timepiece with illumination. It is a front view which concerns on the Example of this invention and shows an hour hand (2nd light guide). It is a perspective view which shows the hour hand (2nd light guide) concerning the Example of this invention. The longitudinal cross-sectional view which shows the movement, circuit board, light source, 1st light guide, 2nd light guide (hour hand), and 3rd light guide (minute hand) which are related to the Example of this invention and are used for the timepiece with illumination. It is. It is a front view which concerns on the Example of this invention and shows a minute hand (3rd light guide). It is a perspective view which shows the minute hand (3rd light guide) according to the Example of this invention. It is a figure which shows the dial plate and the ink layer applied to this in connection with the Example of this invention. It is explanatory drawing which shows the principal part (index ink layer) of a parameter | index concerning the Example of this invention. It is explanatory drawing which concerns on the Example of this invention and shows the dial plate and the ink layer given to this. It is explanatory drawing which concerns on the Example of this invention and shows the dial plate and the ink layer given to this.

  Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3, the timepiece device 1 of the present example includes a pointer (hour hand, minute hand, second hand) disposed on the front surface of the dial 10, a movement 20 that rotates the pointer, and a housing 30 that stores these. I have. Of the hands, the hour and minute hands and the dial plate 10 are illuminated by an illumination device 100 described later in the night or in the dark.

  A circuit board 200 is provided on the front side of the movement 20, and each pointer rotates at a predetermined speed via a pointer pipe 21 protruding to the front side of the circuit board 200. In the center of the circuit board 200, a through hole 201 that penetrates the pointer pipe 21 is provided.

  The illumination device 100 of this example includes a light source 300 such as a light emitting diode mounted on a circuit board 200, a light guide plate 400 formed of a circular plate-shaped light guide provided on the back surface of the dial plate 10, and a light guide. An hour hand and a minute hand made of a light guide are also provided. In this example, as will be described later, the dial plate 10 emits light by the light guide plate 400, but is not limited thereto, and the dial plate may be formed by the light guide plate 400.

  The light source 300 is provided so as to irradiate light in the direction of the light guide plate 400. In the case of this example, three light sources 300 are arranged at substantially equal intervals so as to surround the pointer pipe 21 in the vicinity of the pointer pipe 21. Has been. The number of light sources 300 is not limited to three as long as it is plural.

  The light source 300 is turned on and off by a control means (not shown). That is, an optical sensor (not shown) for detecting the brightness of the environment is provided, and the control means turns on the light source 300 when the environment becomes dark and turns it off when the environment becomes bright. For example, when the room is turned off at night, the light source 300 is turned on and the light guides are illuminated. The light source 300 is turned off when the sun rises and becomes brighter.

  Each of the light guides of the light guide plate 400, hour hand, and minute hand is such that light incident from a predetermined location is diffusely reflected by irregular reflection means provided on the back surface of the light guide and emitted to the front of the light guide. is there. The irregular reflection means may be provided on the front surface (front side).

  As the irregular reflection means, for example, a spherical, conical, pyramid, prismatic, or cylindrical fine convex reflection dot that is integrally formed with the light guide by injection molding is used. With respect to these distributions, the area occupied by the reflective dots is set sparsely in the part where the irregularly reflected light is relatively strong, and the area occupied by the reflective dots is set densely in the part where the irregularly reflected light is relatively weak. Furthermore, an irregular reflection structure by a graining process, printing of ink or paint, or a structure in which these are combined can be used.

  The light guides 400, hour hand and minute hand constitute the first light guide, the second light guide 11 and the third light guide 12 of the present invention. The (light guide plate 400) is disposed at a position closest to the light source 300, the second light guide (hour hand) 11 is disposed next to the first light guide, and the third light guide (minute hand) 12 is second guide. Arranged next to the light body, each light guide (light guide plate 400, hour hand and minute hand) sequentially takes light from the light source 300 into the light guide. Further, apart from sequentially taking light from the light source 300 into each light guide, the first light guide (light guide plate 400) passes the light collected on the light guide to the second light guide 11. The second light guide 11 is configured to sequentially irradiate the third light guide 12.

  That is, in general, light attenuates in inverse proportion to the square of the distance from the light source, so that the light emission condition of the light emitting member becomes disadvantageous as the distance from the light source increases. In this example, the distance is increased from the light sources 300 and 300 in the order of the light guide plate 400, the hour hand, and the minute hand. Therefore, it is necessary to guide light sufficient for the light emitting members having different distances from the light sources 300 and 300 to emit light. Therefore, in this example, the following measures are taken.

  As shown in FIG. 4, the light guide plate 400 constituting the first light guide of the present invention reflects light from the plurality of light sources 300 and 300 into the first light guide so as to enter the light. In addition to the reflective surface portion 401, a lens shape portion 402 is provided at a location corresponding to the plurality of light sources 300, 300 for condensing light from the light sources and projecting it in the front direction.

  The light from the light source 300 is reflected by the reflection surface 401 and taken into the first light guide body, travels through the light guide plate 400, and is irregularly reflected in the front direction of the watch body by the light emitting structure (diffuse reflection means) applied to the light emitting portion. And light the dial. The remaining light is collected by the lens shape portion 402 and projected in the front direction, and enters the hour hand constituting the second light guide 11.

  The hour hand receives light from the plurality of light sources 300, 300, in particular, light collected by the lens-shaped portion 402 of the first light guide and projected in the front direction. That is, the hour hand reflects the light projected from the lens-shaped portion 402 of the light guide plate 400 serving as the first light guide into the hour hand (second light guide 11) to enter the hour hand. The reflective surface part 110 (110a, 110b) is provided. The light reflected and incident on the hour hand reflecting surface portion 110 (110a, 110b) is taken into the light guide body of the hour hand, is irregularly reflected by the irregular reflection means provided on the back surface of the light guide, and the front face of the hour hand. The hour hand emits light. The irregular reflection means may be provided on the front surface (front side).

  As described above, the hour hand reflecting surface portion 110 constitutes an hour hand reflecting surface for reflecting the light projected from the lens-shaped portion 402 of the first light guide into the hour hand so as to be incident thereon. In this example, however, the hour hand first reflecting surface 110a that reflects the light at a certain (one) rotational position of the hour hand (second light guide 11) and introduces the light into the hour hand, An hour hand second reflecting surface 110b that is reflected at the (other) rotational position and introduced into the hour hand.

  5 to 7, the hour hand first reflecting surface 110a is formed on the upper part of the pointer pipe insertion hole 112, and the hour hand second reflecting surface 110b is formed on the pointer pipe insertion hole. It is formed on the left and right diagonal upper portions of 112.

  In this example, three light sources 300 are installed around the pointer pipe 21. That is, the light source 300 is provided at the 12 o'clock position, the 4 o'clock position, and the 8 o'clock position. When the light source 300 and the hour hand (second light guide 11) face each other, for example, when the hour hand points to 12:00, the light from the light source 300 is reflected by the hour hand first reflecting surface 110a and the hour hand is sufficient. Light is emitted with sufficient light intensity. However, when the hour hand indicates 2 o'clock, for example, the hour hand first reflecting surface 110a of the hour hand cannot reflect a sufficient amount of light. Therefore, by providing the hour hand second reflecting surface 110b, the hour hand second reflecting surface 110b also reflects light into the hour hand, and accordingly, the light sources on both sides sandwiching the hour hand (the light source 300 at the 12 o'clock position and the 4 o'clock position). The light from the light source 300) can be reflected in the direction of the pointer.

  As described above, when the hour hand reflecting surface portion 110 includes the hour hand first reflecting surface 110a and the hour hand second reflecting surface 110b, three light sources 300 are provided around the pointer pipe 21 as in this example. Even when the number of light sources such as installed is small, regardless of the rotation position of the hour hand, light is captured and reflected by either or both of the hour hand first reflecting surface 110a and the hour hand second reflecting surface 110b, The inside of the light guide of the hour hand can be efficiently irradiated, and as a result, the light emitting action of the hour hand can be improved.

  In recent years, LEDs are generally used as light sources used in similar technologies. When an LED is used as the light source and the entire circumference is illuminated so as to surround the pointer pipe as in this example, a plurality of LEDs are arranged in a circle. However, since the LED is a point light source, the amount of light is inevitably reduced between the LEDs. Although it is conceivable to use a light source of an all-around surface-emitting type, for example, a light source such as an EL or a cold cathode tube, there are many problems in driving voltage, space, price, etc., and it is not practical. In this respect, when configured as in the present example, even when a point light emitter such as an LED is used as the light source, sufficient light can be secured to emit light from the hour hand at any hand position.

  The hour hand (second light guide 11) further includes a lens shape portion 111 for condensing the light projected from the lens shape portion 402 and projecting it in the front direction. The lens-shaped portion 111 is formed in a ring shape on the inner peripheral side of the hour hand reflecting surface portion 110 (110a, 110b) and on the outer peripheral side of the pointer shaft insertion hole 112 of the pointer. The irradiated light from the light source 300 is condensed by the lens shape portion 111 and projected in the front direction, and enters the minute hand constituting the third light guide 12.

  As described above, when the lens-shaped portion 111 is provided on the hour hand, light can be condensed by the lens-shaped portion 111 and the minute hand can be efficiently irradiated. Therefore, in combination with the hour hand reflecting surface 110 (110a, 110b), the irradiation can be performed more efficiently.

  In this example, as described above, the light projected from the lens shape portion 402 is collected by the lens shape portion 111 and projected in the front direction. And the lens-shaped portion 402 of the first light guide (light guide plate 400) have an opposing positional relationship (substantially the same radial interval in the radial direction with the pointer pipe 21 as a fulcrum). preferable.

  As shown in FIGS. 8 to 10, the minute hand (third light guide 12) collects light from the plurality of light sources 300, 300, particularly the lens shape portion 111 of the hour hand, and projects it in the front direction. The emitted light is received. That is, as in the case of the hour hand, the minute hand reflects the light projected from the lens-shaped portion 111 of the hour hand as the second light guide 11 into the minute hand (third light guide 12). The minute hand reflecting surface 120 (120a, 120b) for making it light is provided. The light reflected and incident on the minute hand reflecting surface portion 120 (120a, 120b) is taken into the light guide of the minute hand (third light guide 12), and irregular reflection means provided on the back surface of the light guide. Is diffused by the light and emitted to the front of the minute hand to cause the minute hand to emit light. The irregular reflection means may be provided on the front surface (front side).

  As described above, the minute hand reflecting surface portion 120 constitutes a minute hand reflecting surface for reflecting the light projected from the lens shape portion 111 of the hour hand into the minute hand to make it incident. In this example, similarly to the hour hand, it has a minute hand first reflecting surface 120a and a minute hand second reflecting surface 120b.

  That is, in this example, in FIGS. 9 to 10, the minute hand first reflecting surface 120 a is formed in the upper part of the pointer pipe insertion hole 121, and the minute hand second reflecting surface 120 b is oblique to the left and right of the pointer pipe insertion hole 121. It is formed on the top.

  In this example, unlike the hour hand, the minute hand (third light guide 12) does not have the lens-shaped portion formed in the hour hand, but the first and second reflecting surfaces 120a and 120b of the minute hand are the hour hand. This is the same as the hour hand first and second reflecting surfaces 110a and 110b, and therefore has the same effect as the hour hand. That is, even when the number of light sources 300 is small such that three light sources 300 are installed around the pointer pipe 21 as in this example, the minute hand first reflecting surface 120a and the minute hand are used regardless of the rotation position of the minute hand. Light can be captured and reflected by either or both of the second reflecting surfaces 120b and efficiently radiated into the light guide of the minute hand. As a result, the light emitting action of the minute hand can be improved.

  Next, the illumination structure of the dial will be described.

  The illumination of the dial plate in this example is different from the structure described in each of the above publications shown in Patent Documents 4 to 6, that is, the light guide (light guide plate) itself constitutes the dial plate. Using the light emitting action of the light guide plate 400 made of a light body, a dial plate material is arranged on the front side of the light guide plate 400, and printed on each of the front and back surfaces of the dial plate material with white ink and black ink, The indicator on the dial is devised to emit light.

  In general, when a light emitting from a light guide plate emits an indicator such as a character on a dial (hereinafter, the indicator such as a character is simply referred to as “index”), the dial is a dark dial with a black or dark blue color. Then, by setting the indicator portion to white, the white character portion is emitted by light from the light guide plate, and the dark color dial plate surface blocks light, so that it can be displayed with good contrast. However, in the case of a watch, since the index is generally displayed on the white dial surface, the white dial surface emits light when this type (that is, the black index display on the white dial surface) is used. This makes it difficult to see the black index. In particular, when the hands (hour hand and minute hand) emit light as in this example, the white dial further emits light, making it difficult to recognize the time.

  Therefore, it is required that the white dial plate surface emit light without emitting light, or the black index or the contour portion of the black index. Since the black index itself blocks light, it cannot be emitted. Therefore, in the present invention, the contour part of the black index is caused to emit light, and it is devised to emit light efficiently at low cost.

  11 to 14, the dial structure of the present example includes a dial 10 that is irradiated with light from the light guide plate on the front side of the light guide plate 400, and the dial 10 is made of black ink as an indicator. (Indicator ink layer 101) is printed and configured. As the dial plate 10, a plate made of a transparent material, for example, a transparent plastic plate such as acrylic or polycarbonate is used.

  The dial 10 is provided with two ink layers (an index ink layer 101, a back first ink layer 102, a back second ink layer 103, and a front first ink layer 104). That is, on the back side of the dial plate 10, for example, black ink (light-shielding ink) is superimposed on the back side first ink layer 102 printed with white ink (translucent) that diffuses and transmits the entire surface, and the back side first ink layer 102. And a second front ink layer 104 printed with white ink and the indicator ink layer 101 printed with black ink on the front side of the dial plate 10. . For convenience of explanation, the back side first ink layer 102 is printed first, the back side second ink layer 103 is printed second, and the front side first ink layer 104 printed with white ink on the front side of the dial 10 is printed third. The index (index ink layer 101) is referred to as fourth printing.

  In addition, the back side second ink layer 103 of the second printing is provided with a non-ink layer 103a corresponding to the fourth printing index (index ink layer 101). Therefore, the light emitted from the light guide plate 400 is sequentially projected to the dial plate 10 and the back side first ink layer 102 of the first printing printed with the white ink on the whole surface through the non-ink layer 103a. . The non-ink layer 103a forms an index having a similar shape larger than the index (index ink layer 101).

  Further, the front first ink layer 104 of the third printing is located at a position corresponding to the index ink layer 101 (fourth printing) of the dial plate 10 and has a non-ink layer 104a having a similar shape larger than that of the index ink layer 101. Is provided. In this example, the non-ink layer 104a and the non-ink layer 103a are formed in the same shape.

  In this example, the front first ink layer 104 is printed on the front side of the dial plate 10 with white ink (third printing), and then the index ink layer 101 is printed with black ink (fourth printing). However, basically, the front first ink layer 104 and the index ink layer 101 do not overlap, so the order of printing may be changed. However, for example, when displaying characters and symbols on the dial plate without appropriately emitting light, the indicator ink layer 101 may be printed later as in this example, and the symbols and the like may be printed at the same time.

  By the above first to fourth printing, the dial plate 10 emits light by the first printing, the light other than the light emitting portion is shielded by the second printing, the white dial plate surface is decorated by the third printing, and the fourth printing The indicator will be decorated by printing. Thus, by applying the back side first ink layer 102 (first printing) printed with white ink on the entire surface and the front first ink layer 104 (third printing) similarly printed with white ink, white characters are printed. The plate surface can be decorated and the indicator can be illuminated with good contrast as described later. In addition, when these 1st printing and 3rd printing are not performed, it turns out that the dial 10 will become gray by 2nd printing and 4th printing of black ink.

  That is, the light irradiated from the light guide plate 400 is sequentially emitted through the first ink layer 102 printed with white ink on the entire surface via the non-ink layer 103a, which is guided to the dial plate 10 and transmitted therethrough. Then, it is irradiated in the front direction. At this time, light other than the non-ink layer 103a is shielded by the back side second ink layer 103 of the second printing. In this example, the back side second ink layer 103 of the second printing is formed of black ink. However, the back side second ink layer 103 is intended to shield the light, and thus is not limited to black ink and looks good. A light-shielding ink such as a good silver ink can be used as appropriate.

  The indicator corresponding to the non-ink layer 103a that emits light on the dial 10 is decorated in combination with the front-side first ink layer 104 of the third printing in the non-ink layer 104a of the third printing. In this decorative portion, the index ink layer 101 by the black ink of the fourth printing exists, and the index ink layer 101 (index portion) has a similar shape smaller than the decorative portion. A contour portion is formed. Further, since this contour portion is the dial plate 10, the white dial plate surface is decorated by the fourth printing.

  The first printing (the entire white ink layer that diffuses and transmits) exhibits good index decoration (if the first printing is not performed, the light emitted from the light guide plate 400 is directly irradiated). By the third printing (non-ink layer and white ink layer), it is possible to shine the index with good contrast.

  By configuring as described above, even if the dial plate 10 is a white dial plate, the index (outline) can be illuminated with good contrast. In addition, since each ink layer is formed on the dial plate 10, it is not necessary to separately use a member such as a plate for transmitting and diffusing light and blocking light. Procurement of members is expensive, and there is an advantage that inconveniences such as troublesome positioning of the members when connecting them can be avoided.

  The illuminated timepiece device of the present invention is suitable not only for a small alarm clock but also for a relatively large wall clock.

1 Clock device 10 Dial 11 Hour hand (second light guide)
12 minute hand (third light guide)
13 Second hand 20 Movement 21 Pointer pipe 30 Housing 100 Illuminating device 101 Index ink layer (index)
102 Back first ink layer 103 Back second ink layer 103a Non-ink layer 104 Front first ink layer 104a Non-ink layer 110 Hour hand reflecting surface portion 110a Hour hand first reflecting surface 110b Hour hand second reflecting surface 111 Lens shape portion 112 Pointer pipe insertion Hole 120 Minute hand reflecting surface portion 120a Minute hand first reflecting surface 120b Minute hand second reflecting surface 121 Pointer pipe insertion hole 200 Circuit board 300 Light source 400 Light guide plate 401 Reflecting surface portion 402 Lens shape portion

Claims (5)

A plurality of concentrically arranged light sources around the pointer rotation axis;
A first light guide, a second light guide, and a third light guide, which are sequentially arranged on the front side of the light source,
The first light guide is provided at a location corresponding to the plurality of light sources, and reflects the light from the light source into the first light guide to enter the light, and corresponds to the plurality of light sources. A lens-shaped portion that is provided at a location to collect the light from the light source and project it in the front direction, and
The second light guide constitutes an hour hand, and reflects the light projected from the lens-shaped portion of the first light guide into the second light guide so as to enter the light. An hour hand reflecting surface portion, and a lens shape portion for condensing the light projected from the lens shape portion of the first light guide and projecting it in the front direction,
The third light guide constitutes a minute hand, and reflects the light projected from the lens-shaped portion of the second light guide into the third light guide so as to enter the light. An illuminated timepiece device comprising a minute hand reflecting surface portion. 2. The illuminated timepiece device according to claim 1, wherein a dial plate is provided on the front side of the first light guide to receive the light from the first light guide and the indicator is illuminated. 2. The illuminated timepiece device according to claim 1, wherein the first light guide body is provided with an index on the first light guide body to constitute a dial. The hour hand reflecting surface portion of the second light guide as the hour hand reflects the light projected from the lens-shaped portion of the first light guide at one rotational position of the hour hand. 2. The illuminated hand according to claim 1, further comprising: an hour hand first reflecting surface to be introduced into the second hand, and an hour hand second reflecting surface to be reflected at another rotational position of the hour hand and introduced into the second light guide. Clock device. The minute hand reflecting surface portion of the third light guide serving as the minute hand reflects the light projected from the lens-shaped portion of the second light guide at one rotational position of the minute hand. 2. The illuminated hand according to claim 1, further comprising: a first reflecting surface of the minute hand to be introduced into the second reflecting surface and a second reflecting surface of the minute hand to be reflected at the other rotational position of the minute hand and introduced into the third light guide. Clock device.

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