JP2003248447A - Light emitting device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To illuminate the whole display member nearly uniformly with good efficiency by a small number of light emitting elements. <P>SOLUTION: An ultraviolet-ray emitting element 15 is arranged for a light- transmissive parting member 5, a reflection part 16 is provided on the inner circumferential surface of a wristwatch case 1 which faces the outer circumferential surface of the parting member 5, and a dial 10 which is arranged in the area surrounded with the parting member 5 and hands 11 are provided with light emitting parts 13 which react to ultraviolet rays to emit chromatic light. Accordingly, when the ultraviolet-ray emitting element 15 is made to emit light, the light of the ultraviolet-ray range is diffused directly to the dial 10 and hands 11 and a portion of the diffused light is transmitted through the parting member 5 and reflected by the reflection part 16; and the reflected light is transmitted through the parting part 16 again and diffused to the dial 10 and hands 11. Consequently, the whole parting member 5 can be made to illuminate by the reflection part 16 and the nearly entire area of the dial 10 and hands 11 is irradiated with the light of the ultraviolet-ray range with good efficiency by a small number of ultraviolet-ray emitting elements 16 to make a light emitting part 13 possible to emit chromatic light. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device and an electronic device which are useful when applied to various devices such as wristwatches, mobile phones, and instruments of automobiles.

[0002]

2. Description of the Related Art In a wristwatch, for example, a luminous material such as a luminous paint is partially applied by printing or the like to a display member such as a dial or a pointer so that the time can be visually recognized even in a dark place to form a luminous portion. However, in a bright place, the light storing unit receives external light to store energy, and in a dark place, the light storing unit emits light by the stored energy. In such a wristwatch, the luminous part can emit light in a dark place to know the time, but not only the luminous part cannot freely emit light when desired by the user, but also the luminous part can efficiently emit light. There is a problem that you can not.

[0003]

Therefore, in order to solve such a problem, conventionally, a light emitting element such as a light emitting diode is arranged on a part of the inner peripheral surface of a wristwatch case, and the light emitting element is caused to emit light. In some cases, the display member is illuminated. However, in such a wristwatch, since the light emitted from the light emitting element is only applied directly to the display member, only the vicinity of the light emitting element is illuminated brightly, but the illumination away from the light emitting element becomes dark and There is a problem that the entire member cannot be illuminated uniformly.

An object of the present invention is to efficiently illuminate the entire display member substantially uniformly with a small number of light emitting elements.

[0005]

In order to solve the above problems, the present invention comprises the following components. It should be noted that the reference numerals of the drawings attached to the respective elements described in the sections of the respective embodiments to be described later are attached to the respective constituent elements together with the parentheses. The invention according to claim 1 is, as shown in FIGS. 1 to 9, a frame member having a light-transmitting property (parting members 5, 37).
A light emitting element (ultraviolet light emitting element 15) disposed on at least a part of the frame-shaped member, a reflecting portion (16, 28, 40) provided along the outer peripheral surface of the frame-shaped member, and the frame. Display member (the dial 10 and the pointer 11, or the liquid crystal display element 2 arranged corresponding to the area surrounded by the circular member)
1) A light-emitting device comprising:

According to the present invention, when the light emitting element is caused to emit light, the light from the light emitting element is directly diffused into the area surrounded by the frame-shaped member, and a part of the diffused light is transmitted through the frame-shaped member. Is reflected by the reflecting portion, and the reflected light is transmitted through the frame-shaped member again and diffused into the area surrounded by the frame-shaped member, so that the entire frame-shaped member can emit light. Thus, it is possible to efficiently illuminate the entire display member substantially uniformly with a small number of light emitting elements without using a light guide plate.

According to a second aspect of the present invention, as shown in FIGS. 1 to 9, a frame member (parting member 5,
37), a light emitting element (ultraviolet light emitting element 15) which is disposed on at least a part of the frame-shaped member and emits light in a specific wavelength region, and a reflection portion (which is provided along the outer peripheral surface of the frame-shaped member). 16, 28, 40), the display member (the dial 10 and the pointer 11, or the liquid crystal display element 21) arranged corresponding to the area surrounded by the frame-shaped member, and the display member provided with the light emission. A light-emitting device comprising: a light-emitting portion (13) that emits colored light in response to light in a specific wavelength region emitted by the element.

According to the present invention, when the light emitting element is caused to emit light, the light in the specific wavelength range from the light emitting element is directly diffused into the area surrounded by the frame-shaped member, and a part of the diffused light is frame-shaped. The light is transmitted through the member and reflected by the reflection portion, and the reflected light is again transmitted through the frame-shaped member and diffused toward the area surrounded by the frame-shaped member, so that the entire frame-shaped member is in the specific wavelength region. The light in the characteristic wavelength region can be substantially uniformly irradiated to the entire area of the display member, so that the light emitting portion provided in the display member reacts to the light in the specific wavelength region. Since it emits colored light as desired, the light-emitting element can be made to emit light when desired and the light-emitting portion can freely emit colored light, and the light-emitting portion can efficiently emit colored light with a small number of light-emitting elements without using a light guide plate. You can

The invention according to claim 3 is the light-emitting device according to claim 2, wherein the light in the specific wavelength region is either light in the ultraviolet region or light in the infrared region. . According to the present invention, whether the light in the specific wavelength region is the light in the ultraviolet region or the light in the infrared region, the light is invisible to the human eye, and therefore, the light emitting element (for example, the ultraviolet light emitting element 15). Even if the light is emitted, the light emission state cannot be visually recognized, but the light in the characteristic wavelength range is
When irradiated to 3), the light emitting part emits colored light,
The colored light emission of the light emitting portion can be visually recognized by human eyes.

The invention according to claim 4 is, as shown in FIGS. 1 to 9, a case member (wristwatch case 1 or device case 3) for accommodating the frame-shaped member (partition member 5, 37).
0), and the reflecting portion (16, 28, 40) is provided on the inner peripheral surface of the case member facing the outer peripheral surface of the frame-shaped member. It is the light-emitting device described. According to this invention, claim 1 or 2
In addition to the same effects as the invention described in (1), especially since the reflecting surface of the reflecting portion is exposed in the state before assembly, it is possible to surface-treat the exposed reflecting surface of the reflecting portion. Since the reflection efficiency can be improved by finishing with high precision, it is possible to more efficiently irradiate the display member with light.

According to a fifth aspect of the present invention, as shown in FIG. 7, the case member (wristwatch case 1) in which the reflecting portion (28) faces the outer peripheral surface of the frame-shaped member (partition member 5). The light emitting device according to claim 4, wherein the light emitting device is partially provided on an inner peripheral surface of the. According to this invention, since the reflection state of the light by the reflection part is partially different,
The illuminance of the light applied to the display member and the light emitting portion can be partially changed, whereby a decoratively preferable one can be obtained.

The invention according to claim 6 is, as shown in FIGS. 1 to 9, an electronic apparatus (a wristwatch, or a wristwatch, or a device including the light emitting device according to claim 1 or 2. Mobile phone). According to this invention, claim 1
Alternatively, similarly to the invention described in 2, the light emitted from the light emitting element is directly diffused into the area surrounded by the frame-shaped member, and a part of the diffused light is transmitted through the frame-shaped member and reflected by the reflection portion. Since the reflected light is again transmitted through the frame-shaped member and diffused, the entire frame-shaped member can be made to emit light, and thus the display member can be efficiently displayed with a small number of light emitting elements without using a light guide plate. Can be illuminated almost uniformly.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS. 1 is an enlarged front view of a part of the wristwatch, FIG. 2 is a sectional view taken along the line AA, and FIG. 3 is a view showing the wristwatch case of FIG. This wristwatch includes a wristwatch case 1 made of metal such as stainless steel. As shown in FIG. 2, a watch glass 2 is attached via a packing 3 to the upper center of the wristwatch case 1, and a watch module 4 is placed inside the wristwatch case 1 via a parting member 5. It is stored. A back cover 6 is attached to the lower surface of the wristwatch case 1 via a waterproof ring 7.

The timepiece module 4 is provided with at least an analog mechanism of an analog function and a digital function, and as shown in FIG. 2, a pointer shaft of an analog movement (not shown) provided in the housing 8. 9 protrudes upward through the through hole 10a of the dial plate 10, and a pointer 11 such as an hour hand, a minute hand and a second hand is attached to the upper end portion of the protruding pointer shaft 9, and the pointer 11 moves above the dial plate 10. Is configured. In this case, the dial 10 and the pointer 11 constitute a display member, and the hour characters 12 are provided on the upper surface of the dial 10 along the peripheral portion at predetermined intervals. In addition, as shown in FIG. 1, for example, the predetermined positions of the upper surface of the dial 10 and the pointer 11,
A light emitting portion 13 is provided at the tip of the hour character 12 and the pointer 11 on the dial 10.

The light emitting section 13 has a wavelength of 350 to 420.
nm (nanometer: nanometer is one billionth of a meter) or 254 to 365 nm, which emits colored light in response to ultraviolet rays and exhibits a transparent state when not irradiated with ultraviolet rays. It is provided by printing or coating. Has been. The emission color of the light emitting unit 13 is basically three colors of red, blue, and green (or yellow), and the color variation is 10
There are 13 types. In this case, the light emitting portion 13 of the dial 10 and the light emitting portion 13 of the pointer 11 may have the same light emitting color, but preferably have different light emitting colors in order to easily recognize the time. For example, it is desirable that the light emitting portion 13 of the dial 10 emits red light and the light emitting portion 13 of the pointer 11 emits green (or yellow) light.

By the way, the parting member 5 is the watch glass 2
Is a frame-shaped member disposed on the inner surface of the wristwatch case 1 in a state of being located between the peripheral portion on the lower surface of the watch and the peripheral portion on the upper surface of the dial 10, and is made of a synthetic resin having a light-transmitting property such as acrylic. Has been done. A recess 14 is continuously formed on the inner peripheral surface and the outer peripheral surface of the parting member 5 at a predetermined position on the parting member 5, for example, at a position corresponding to 12:00 shown in FIG. An ultraviolet light emitting element 15 called a black light is arranged inside.

In this case, the ultraviolet light emitting element 15 is constituted by a light emitting element such as an ultraviolet lamp or an ultraviolet light emitting diode (LED) which emits light in the ultraviolet region having a wavelength of around 365 nm or 254 to 365 nm. Further, a reflecting portion 16 is provided on the inner peripheral surface of the wristwatch case 1 where the outer peripheral surfaces of the parting members 5 face each other. The reflecting portion 16 has a structure in which the inner peripheral surface of the wristwatch case 1 made of metal such as stainless steel is mirror-finished to form a reflective surface over the entire inner peripheral surface of the wristwatch case 1. .

According to such a wristwatch, in a bright place such as a room where almost no ultraviolet rays hit, the hour-mark 12 of the dial 10 and the light-emitting part 13 provided on the pointer 11 are in a transparent state, so that the light-emitting part. The dial 10 and the pointer 11 are not affected by the visibility due to 13, and the hour 12 and the pointer 11 of the dial 10 can be seen through the watch glass 2, and the hour 12 and the pointer 11 of the dial 10 are normally used. You can know the time as well as your wristwatch.

When the ultraviolet light emitting element 15 is made to emit light in a room where it is hardly exposed to ultraviolet rays, light in the ultraviolet region diffuses directly from the recess 14 of the parting member 5 into the region surrounded by the parting member 5. Part of the diffused light in the ultraviolet region passes through the parting member 5 from the inner peripheral surface side toward the outer peripheral surface side and is reflected by the reflecting portion 16, and the reflected light again passes through the parting member 5. The light is transmitted from the outer peripheral surface side toward the inner peripheral surface side and diffused in the region surrounded by the parting member 5. Therefore, the entire parting member 5 can be made to emit light in the ultraviolet region, and at the same time the display member, that is, the dial 10 and the pointer 11 in the region surrounded by the parting member 5 in the ultraviolet region. It can be irradiated from the entire circumference. As a result, the light emitting portion 13 provided on the dial 10 and the pointer 11 responds to the light in the ultraviolet region to emit colored light, so that the time can be visually recognized even in a dark place.

As described above, according to this wrist watch, the ultraviolet light emitting element 15 emits light when desired,
The light emitting section 13 can freely emit colored light, and the colored light emission of the light emitting section 13 can provide excellent color characteristics and decorativeness. In particular, the parting member 5 has a light-transmitting property, and the reflecting portion 16 is provided on the inner peripheral surface of the wristwatch case 1 at a portion facing the outer peripheral surface of the parting member 5, and the parting member 5 is covered by the reflecting portion 16. Since the transmitted light is reflected, the entire parting member 5 can be caused to emit light by the reflecting portion 16, and light in the ultraviolet region can be applied to almost all areas of the dial 10 and the pointer 11 which are display members, As a result, the light emitting section 13 can efficiently emit colored light with a small number of ultraviolet light emitting elements 15 without using a light guide plate.

In this case, since the ultraviolet light emitting element 15 emits light in the ultraviolet region, it is invisible to the human eye, and even if the ultraviolet light emitting element 15 is made to emit light, the light emitting state and the light emitting state of the entire parting member 5 will be changed. Although not visible, when the light emitting section 13 is irradiated with light in the ultraviolet region, the light emitting section 1
The colored light emission of the light emitting unit 13 allows the colored light emission of the light emitting unit 13 to be visually recognized by human eyes. In addition, the reflector 1
Since 6 is provided on the inner peripheral surface of the wristwatch case 1 made of metal such as stainless steel, the reflective surface is exposed before assembly, and the exposed reflective surface can be surface-treated.
For this reason, the reflection surface can be accurately finished by mirror finishing and the reflection efficiency can be improved.
Even if the number is small, the light emitting section 1 can efficiently emit light in the ultraviolet region.
3 can be irradiated.

In the first embodiment, the ultraviolet light emitting elements 15 are arranged only at a predetermined position of the parting member 5, that is, at one position corresponding to 12:00, but the invention is not limited to this. The ultraviolet light emitting elements 15 may be arranged respectively. In this case, as in the first modified example shown in FIG. 4, when the ultraviolet light emitting element 15 is arranged at the position corresponding to 12:00 and 6 o'clock of the parting member 5, for example, the ultraviolet light emitting element 15 located at 12:00. It is preferable that the UV light emitting element 15 is arranged toward the 3 o'clock side, and the ultraviolet light emitting element 15 located at 6 o'clock is arranged toward the 9 o'clock side. With this configuration, it is possible to efficiently and uniformly irradiate the light in the ultraviolet region in the region surrounded by the parting member 5, and therefore, the partitioning can be performed more efficiently than in the first embodiment. The entire member 5 can be brightly illuminated.

Further, in the first embodiment, the concave portion of the parting member 5 for the ultraviolet ray emitting element 15 is so arranged that the light in the ultraviolet ray region emitted by the ultraviolet ray emitting element 15 is directly applied to the dial 10 and the pointer 11. However, the present invention is not limited to this, and for example, as in the second modified example shown in FIG. 5, a recess 17 is provided in the upper part of the parting member 5 so as to open to the outer peripheral surface side. The light emitting element 15 may be arranged so that the emitted light in the ultraviolet region is directly applied to the reflecting portion 16 on the outer peripheral surface side of the parting member 5. With such a structure, it is possible to reflect the light in the ultraviolet region emitted by the ultraviolet light emitting element 15 by the reflecting portion 16 and indirectly irradiate it in the region surrounded by the parting member 5. It has substantially the same effect as the form.

[Second Embodiment] Next, referring to FIG.
A second embodiment in which the present invention is applied to a wristwatch will be described. The same parts as those of the first embodiment shown in FIGS. 1 to 3 are designated by the same reference numerals and described. In this wristwatch, the timepiece module 20 housed in the wristwatch case 1 via the parting member 5 has a digital function, and is otherwise the same as the first embodiment. That is, the timepiece module 20 has a structure in which the liquid crystal display element 21 is arranged on the housing 8 as a display member instead of the display member including the dial 10 and the hands 11.

As shown in FIG. 6, this liquid crystal display element 21 has a liquid crystal (not shown) sealed between a pair of upper and lower transparent electrode substrates 22 and 23, and has an upper surface of the upper electrode substrate 22 and a lower surface thereof. Polarizing plates 24 and 25 are provided on the lower surface of the electrode substrate 23, respectively, and a reflecting plate 26 is provided on the lower surface of the lower polarizing plate 25, and a voltage is selectively applied between the pair of electrode substrates 22 and 23. Is configured to electro-optically display information such as time. On the upper surface of the liquid crystal display element 21, that is, the upper surface of the upper polarizing plate 24, the same light emitting unit 13 as in the first embodiment is provided.

That is, like the first embodiment, the light emitting section 13 emits colored light in response to ultraviolet rays and exhibits a transparent state when it is not irradiated with ultraviolet rays. It is provided at a predetermined position on the upper surface of the element 21. Further, the parting member 5 is arranged between the peripheral part on the lower surface of the watch glass 2 and the peripheral part on the upper surface of the liquid crystal display element 21, and is located at a predetermined position of the parting member 5, for example, at a position corresponding to 12:00. In the same manner as in the first embodiment, the ultraviolet light emitting element 15 is arranged. Further, a reflecting portion 16 is provided by mirror finishing on the inner peripheral surface of the wristwatch case 1 at the location where the outer peripheral surfaces of the parting members 5 face each other.

According to such a wristwatch, in a bright place such as a room where almost no ultraviolet rays hit, the liquid crystal display element 2
Since the light emitting portion 13 provided on the upper surface of the liquid crystal display device 1 has a transparent state, the liquid crystal display element 21 is not affected by the visibility due to the light emitting portion 13 and the liquid crystal display element 21 is passed through the watch glass 2.
The information such as the time displayed on the liquid crystal display element 21 can be seen. That is,
External light transmitted through the watch glass 2 and entering the wristwatch case 1 is transmitted from the upper polarization plate 24 of the liquid crystal display element 21 through the pair of electrode substrates 22 and 23 and the lower polarization plate 25 and is reflected by the reflection plate 26. Then, the reflected light is emitted again from the timepiece glass 2 through the optical path opposite to the above, so that the information displayed on the liquid crystal display element 21 can be seen from the outside of the wristwatch case 1 through the timepiece glass 2. it can.

When the ultraviolet light emitting element 15 is caused to emit light in a room where it is hardly exposed to ultraviolet rays, the light in the ultraviolet region diffuses directly into the region surrounded by the parting member 5 as in the first embodiment. Part of the diffused light in the ultraviolet region passes through the parting member 5 from the inner peripheral surface side toward the outer peripheral surface side and is reflected by the reflecting portion 16, and the reflected light again passes through the parting member 5. The light is transmitted from the outer peripheral surface side toward the inner peripheral surface side and diffused in the region surrounded by the parting member 5. Therefore, the entire parting member 5 can be made to emit light in the ultraviolet region, and the liquid crystal display element 21 in the region surrounded by the parting member 5 is irradiated with light in the ultraviolet region from the entire circumference of the parting member 5. be able to. As a result, even in a dark place, the light emitting section 13 provided on the upper surface of the liquid crystal display element 21 responds to light in the ultraviolet region to emit colored light, and the colored emission of the light emitting section 13 causes the information displayed on the liquid crystal display element 21 to be displayed. Can be seen.

As described above, also in this wristwatch, the first
Similar to the embodiment, by emitting the ultraviolet light emitting element 15 at a desired time, the light emitting section 13 can freely emit colored light, and the colored light emission of the light emitting section 13 is excellent in color and decorativeness. Obtainable.
In this case as well, the parting member 5 has a light-transmitting property, and the reflecting part 16 provided on the inner peripheral surface of the wristwatch case 1 facing the outer peripheral surface of the parting member 5 transmits the parting member 5. Since the light is reflected, the entire parting member 5 can be made to emit light by the reflecting portion 16 and the light in the ultraviolet region can be irradiated to almost the entire upper surface of the liquid crystal display element 21. It is possible to efficiently cause the light emitting section 13 to emit colored light without using the ultraviolet light emitting elements 15 of a small number.

It should be noted that, also in the second embodiment, as shown in FIG.
Like the first modification of the first embodiment shown in FIG. 5, the ultraviolet light emitting elements 15 may be arranged at a plurality of locations of the parting member 5, respectively, and the second modification of the first embodiment shown in FIG. As shown in FIG.
The ultraviolet light emitting element 15 may be arranged in the recess 17 of the partition member 5 so that the ultraviolet light emitting element 15 is irradiated.

[Third Embodiment] Next, referring to FIG.
A third embodiment in which the present invention is applied to a wristwatch will be described. The same parts as those of the first embodiment shown in FIGS. 1 to 3 are designated by the same reference numerals and described. This wristwatch has a structure in which a reflecting portion 28 having a partially different surface finishing accuracy is provided on the inner peripheral surface of the wristwatch case 1 at a position facing the outer peripheral surface of the parting member 5, and other than that, the first embodiment is used. The structure is almost the same as the form. That is, the reflecting portion 28
A mirror-finished portion 28a is formed along the inner peripheral surface of the wristwatch case 1.
And rough surface finishing portions 28b are alternately arranged, and the mirror finishing portion 28a has a structure corresponding to the hour character 12 provided on the peripheral portion of the dial 10.

According to such a wristwatch, in addition to the same effects as the first embodiment, the ultraviolet light emitting element 15 is particularly effective.
The light in the ultraviolet region emitted at is directly diffused into the region surrounded by the parting member 5, and a part of the diffused light in the ultraviolet region moves the parting member 5 from the inner peripheral surface side toward the outer peripheral surface side. When the light is transmitted and reflected by the reflection unit 28, the reflection state is different between the mirror-finished portion 28a and the rough-finished portion 28b, and the incident light is reflected as it is at the mirror-finished portion 28a and is incident at the rough-finished portion 28b. The reflected light is diffusely reflected. Therefore, the vicinity of the hour character 12 of the dial 10 corresponding to the mirror-finished portion 28a is illuminated with high illuminance, and the portion of the dial 10 corresponding to the rough-finished portion 28b is illuminated with low illuminance. Since the dial 10 is illuminated with lightness and darkness, it is possible to concentrate the light on a necessary portion and illuminate it brightly, and at the same time, it is possible to obtain a decoratively preferable one.

In the above first to third embodiments, the case where the wristwatch case 1 is made of metal such as stainless steel is described. However, the present invention is not limited to this, and the wristwatch case 1 is made of metal such as brass (Bs). Or a synthetic resin. In such a case, a structure may be used in which the reflecting portion is formed on the inner peripheral surface of the wristwatch case 1 facing the outer peripheral surface of the parting member 5 by white plating or vapor deposition of aluminum or silver. A structure in which a reflection sheet is arranged as a reflection portion on the inner peripheral surface of 1 may be used. Further, such a reflecting portion does not need to be formed with a uniform reflectance over the entire circumference of the inner peripheral surface of the wristwatch case 1, and along the inner peripheral surface of the wristwatch case 1 as in the third embodiment. The wristwatch case 1 may be partially provided on the inner peripheral surface so that the reflectance is partially different. In any of such structures, the same operational effects as those of the first to third embodiments are obtained.

[Fourth Embodiment] A fourth embodiment in which the present invention is applied to a portable telephone will be described with reference to FIGS. 8 and 9. The same parts as those of the second embodiment shown in FIG. 6 will be described with the same reference numerals. As shown in FIG. 8, this mobile phone includes a device case 30 made of synthetic resin. This device case 30 is the upper case 3
1 and the lower case 32 are joined together. In this case, on the upper side of the upper surface of the upper case 31, a transparent protective glass 33 is attached to the opening provided in the upper case 31, and the telephone is provided on the lower side of the upper surface of the upper case 31. Various key buttons 34 necessary for the performance are provided. An antenna 35 is attached to the upper end of the device case 30 so as to be retractable.

On the other hand, as shown in FIG. 9, a telephone function module 36 is housed in the equipment case 30 via a frame-shaped parting member 37. This module 3
6, the liquid crystal display element 21 having the same structure as that of the second embodiment is provided in the housing 38 so as to correspond to the protective glass 33, and various structures necessary for the telephone function are provided. In this case, the liquid crystal display element 21 is configured to display information necessary for the telephone function, and the upper surface of the liquid crystal display element 21 emits colored light in response to ultraviolet rays as in the second embodiment. A light emitting unit 13 that is transparent when not irradiated with ultraviolet rays is provided.

Further, the parting member 37 is the protective glass 33.
It is arranged between the peripheral portion of the lower surface of the module and the peripheral portion of the upper surface of the module 36, so that the module 36 is pressed into the device case 30. In this case, the parting member 37 is made of a light-transmissive material such as acrylic as in the first embodiment, and the ultraviolet light emitting element 15 is arranged at a predetermined position thereof, for example, at the 3 o'clock side. Further, the device case 30 is formed with a frame-shaped portion 39 that presses the parting member 37. The frame-shaped portion 39 has a reflection portion 40 formed by plastic plating or vapor deposition.
Are provided so as to face the outer peripheral surface of the parting member 37.

According to such a mobile phone, as in the second embodiment, the light emitting section 13 provided on the upper surface of the liquid crystal display element 21 is in a transparent state in a bright place such as a room where it is hardly exposed to ultraviolet rays. Therefore, the liquid crystal display element 21 is not affected by the visibility due to the light emitting portion 13, and the protective glass 3
The liquid crystal display element 21 can be seen through 3, and thus information such as the time displayed on the liquid crystal display element 21 can be seen. That is, the external light that has passed through the protective glass 33 and entered the device case 30 is transmitted from the upper polarizing plate 24 of the liquid crystal display element 21 to the pair of electrode substrates 22 and 23 and the lower polarizing plate 25 as in the second embodiment. And is reflected by the reflection plate 26, and the reflected light is emitted again from the protective glass 33 to the outside through the optical path opposite to the above, so that the information displayed on the liquid crystal display element 21 is transmitted to the device case 3
It can be seen through the protective glass 33 from the outside.

When the ultraviolet light emitting element 15 is caused to emit light in a room where it is hardly exposed to ultraviolet rays, the light in the ultraviolet region diffuses directly into the region surrounded by the parting member 37 as in the second embodiment. Part of the diffused light in the ultraviolet region passes through the parting member 37 from the inner peripheral surface side toward the outer peripheral surface side and is reflected by the reflecting portion 40, and the reflected light again passes through the parting member 37. The light is transmitted from the outer peripheral surface side toward the inner peripheral surface side and diffused in the region surrounded by the parting member 37. Therefore, the entire parting member 37 can be made to emit light in the ultraviolet region, and the liquid crystal display element 21 can be irradiated with light in the ultraviolet region from the entire circumference of the parting member 37. As a result, even in a dark place, the light emitting portion 13 provided on the upper surface of the liquid crystal display element 21 responds to light in the ultraviolet region to emit colored light, and thus the information emitted from the light emitting portion 13 is displayed on the liquid crystal display element 21. Can be seen.

As described above, according to this mobile phone, as in the second embodiment, the ultraviolet light emitting element 15 is used when desired.
By emitting light, the light emitting section 13 can freely emit colored light, and the colored light emission of the light emitting section 13 makes it possible to obtain excellent color characteristics and decorativeness. Also in this case, the parting member 37 has light transmittance,
The light passing through the parting member 37 is reflected by the reflecting part 40 provided on the frame-shaped part 39 of the device case 30 at a position facing the outer peripheral surface of the parting member 37.
The entire parting member 37 can be made to emit light, and the light in this ultraviolet region can be irradiated to almost the entire upper surface of the liquid crystal display element 21, whereby a small number of ultraviolet light emitting elements can be used without using a light guide plate. Efficiently emitting light 1 with 15
3 can emit colored light.

In the fourth embodiment, the reflection section 40 is formed by plating or vapor deposition on the frame-shaped portion 39 of the device case 30 made of synthetic resin, but the invention is not limited to this.
A structure may also be adopted in which the reflective sheet is arranged in the 0-shaped frame portion 39 as a reflective portion so as to face the outer peripheral surface of the partition member 37. Further, the reflecting portion 40 does not need to be formed with a uniform reflectance over the entire circumference of the frame-shaped portion 39 of the device case 30, and along the frame-shaped portion 39 of the device case 30 as in the third embodiment. A structure may be partially provided on the inner peripheral surface of the frame-shaped portion 39 so that the reflectance is partially different. Also in the fourth embodiment, the ultraviolet light emitting elements 15 may be arranged at a plurality of locations on the parting member 37 as in the first modification of the first embodiment shown in FIG. As in the second modified example of the first embodiment shown in FIG. 3, the ultraviolet light emitting element 15 may be provided on the parting member 37 so that the light emitted from the ultraviolet light emitting element 15 is irradiated toward the reflecting portion 40. .

Further, in the above-mentioned first to fourth embodiments and their respective modifications, the reflecting portions 16, 28, 40 are provided so as to correspond to the outer peripheral surfaces of the parting members 5, 37, but the present invention is not limited to this.
The reflecting portions 16, also on the upper and lower surfaces of the parting members 5, 37,
28 and 40 may be provided. According to this structure, the parting members 5 and 37 can reflect the light transmitted from the inner peripheral surface side toward the outer peripheral surface side without loss, and can be reflected in various directions, Even more
Light can be emitted efficiently. Furthermore, the first
In the fourth embodiment and each modification thereof, the ultraviolet light emitting element 15 that emits light in the ultraviolet region is used as the light emitting element, and the light emitting portion emits colored light in response to the ultraviolet light emitted by the ultraviolet light emitting element 15. Although the case where the light emitting unit 13 is used has been described, the present invention is not limited to this, and an infrared light emitting device that emits light in the infrared region having a wavelength of 780 nm or more is used as the light emitting device, and the wavelength of 780 nm is used as the light emitting unit.
A structure using a light emitting portion that emits colored light in response to the above infrared rays may be used. Even with such a structure, infrared rays are not visible to human eyes, and therefore, the same effect as that of the first to fourth embodiments can be obtained.

Further, it is not always necessary to use, as the light emitting element, a light emitting element which emits light in a specific wavelength region such as ultraviolet rays or infrared rays which is invisible to the human eye, and for example, light emission which emits light in the visible light region visible to the human eye. An element may be used. In this case, it is not always necessary to provide the display member with a light emitting portion that emits colored light in response to light of a specific wavelength, and the display member itself may be illuminated with light in the visible light region from the light emitting element. Furthermore, although the case where the invention is applied to a wristwatch or a mobile phone has been described in each of the above-described first to fourth embodiments and each modification thereof, the invention is not limited to this. Various electronic devices such as, or various devices such as automobile instruments,
Alternatively, it can be widely applied to each of those parts.

[0043]

As described above, according to the present invention, a frame member having a light transmitting property, a light emitting element arranged on at least a part of the frame member, and an outer peripheral surface of the frame member. Since the reflecting portion provided along with the display member arranged corresponding to the area surrounded by the frame-shaped member is provided, when the light emitting element is caused to emit light, the entire frame-shaped member is caused to emit light by the reflecting portion. As a result, it is possible to efficiently illuminate the entire display member substantially uniformly with a small number of light emitting elements without using a light guide plate. In this case, by using a light emitting element that emits light in a specific wavelength range such as ultraviolet rays or infrared rays that is invisible to the human eye, and providing a light emitting section that emits colored light in response to light in the specific wavelength range in the display member. , Even if the light emitting element is made to emit light, its light emitting state cannot be visually recognized, but the light emitting section is irradiated with light in the characteristic wavelength region and the light emitting section emits colored light. It can be visually recognized, and therefore, the light emitting element can be made to emit light when desired and the light emitting portion can freely emit colored light.

Further, since the reflecting portion is provided on the inner peripheral surface of the case member for accommodating the frame-shaped member so as to face the outer peripheral surface of the frame-shaped member, the reflective surface of the reflecting portion is exposed in the state before assembly. , The exposed reflecting surface of the reflecting portion can be surface-treated, and thereby the reflecting surface can be accurately finished to improve the reflection efficiency, so that the light can be more efficiently irradiated to the display member. You can Further, since the reflection portion is partially provided on the inner peripheral surface of the case member, the reflection state of the light by the reflection portion can be made partially different, so that the display member and the light emitting portion are irradiated. The illuminance of light can be partially changed, and thus, a decoratively preferable one can be obtained.

[Brief description of drawings]

FIG. 1 is an enlarged front view of a main part of a first embodiment in which the present invention is applied to a wrist watch.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view showing a main part of the wristwatch case of FIG.

FIG. 4 is an enlarged cross-sectional view showing a first modification of the first embodiment.

FIG. 5 is a front view showing a second modification of the first embodiment.

FIG. 6 is a sectional view showing a main part of a second embodiment in which the present invention is applied to a wrist watch.

FIG. 7 is a sectional view showing a main part of a wristwatch case in a third embodiment in which the invention is applied to a wristwatch.

FIG. 8 is a perspective view showing a fourth embodiment in which the present invention is applied to a mobile phone.

9 is an enlarged sectional view taken along the line BB of FIG.

[Explanation of symbols]

1 watch case 2 watch glass 4, 20 Clock module 5,37 Parting member 10 dial 11 guidelines 12 o'clock 13 Light emitting part 15 Ultraviolet light emitting element 16, 28, 40 Reflector 21 Liquid crystal display element 28a Mirror finish part 28b Rough surface finish 30 equipment case 33 Protective glass 36 modules

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2F002 AA06 AC01 AC04 EA01 EF01                       EF02 EH04                 5C096 AA01 AA05 BA03 BA04 BB12                       CA03 CA12 CA29 CA32 CB07                       CC02 CE02 CE17 DA01 DA03                       EA01 EA03 FA12

Claims (6)

[Claims] 1. A frame-shaped member having a light-transmitting property, a light-emitting element arranged on at least a part of the frame-shaped member, a reflection section provided along an outer peripheral surface of the frame-shaped member, and the frame. A light-emitting device, comprising: a display member arranged corresponding to a region surrounded by the strip-shaped member. 2. A frame-shaped member having a light-transmitting property, a light-emitting element which is disposed on at least a part of the frame-shaped member and emits light in a specific wavelength region, and which is provided along an outer peripheral surface of the frame-shaped member. And a display member arranged corresponding to the area surrounded by the frame-shaped member, and colored light is emitted in response to light in a specific wavelength region emitted from the light-emitting element provided on the display member. A light-emitting device comprising a light-emitting unit. 3. The light emitting device according to claim 2, wherein the light in the specific wavelength range is either light in the ultraviolet range or light in the infrared range. 4. A case member for accommodating the frame-shaped member is provided, and the reflection portion is provided on the inner peripheral surface of the case member facing the outer peripheral surface of the frame-shaped member.
The light-emitting device according to any one of 1 to 3. 5. The light emitting device according to claim 4, wherein the reflecting portion is partially provided on an inner peripheral surface of the case member facing an outer peripheral surface of the frame-shaped member. 6. An electronic device comprising the light emitting device according to claim 1.