JP2007206577A - Article with display structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile phone which is capable of resolving issues of the reduction in mechanical reliability of a display structure, the reduction of visibility due to blur of display, and the large reduction in use efficiency of light from LEDs 124 while including the display structure of which a user is not conscious of the existence during non-display. <P>SOLUTION: The mobile phone includes the display structure of which the user is not conscious of the existence during non-display. The display structure includes; a front enclosure member 130 having a light-transmissive opaque coating film 134 formed on the front surface side of a transparent substrate 132; a LED display element disposed on the rear side of the front enclosure member 130; and a dark color member 140 which is disposed between the front enclosure member 130 and the LED display element 120 and has light guide holes 142 formed correspondingly to LEDs 124. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an article provided with a display structure.

  2. Description of the Related Art There is known an article having a display structure that does not make the user aware of the display structure when not displayed.

12 and 13 are views for explaining a wrist watch 700 among such articles. 12A is a cross-sectional view in which the internal mechanism of the wristwatch 700 is omitted, and FIG. 12B is a cross-sectional view taken along line A ₆ -A _{6 in} FIG. FIG. 13A is a view for explaining the display state of the watch main body 710 at the time of display, FIG. 13B is a perspective view of the wristwatch 700 at the time of display, and FIG. It is a figure shown in order to demonstrate the display state of the timepiece main-body part 710 at the time of a display, FIG.13 (d) is a perspective view of the wristwatch 700 at the time of non-display.

In FIG. 12B, the watch band and the back case disposed on the back side of the watch body 710 are not shown. Further, in FIG. 13 (a) and 13 FIG. 13 (c), the shows an enlarged portion indicated by reference sign _{B 3} in FIG. 12 (b). Further, the color (brightness) seems to be different between the background where the clock is displayed on the watch body 710 in FIG. 13B and the watch body (entire surface) in FIG. 13D. This is because the shooting conditions are different, and actually they have the same color.

  As shown in FIG. 12, the wristwatch 700 includes a watch body 710 in which a transparent and opaque white coating film 730 is formed on the front and side surfaces of a box-shaped LED display 720, and the LED display 720. A switch 752 and a wiring 754 for controlling the display state are composed of a band portion 740 disposed on the watch band 750 (see, for example, Patent Document 1).

  Note that “translucent and opaque” means that the structure on the back side of the member cannot be recognized when it is not displayed because it is opaque. Means that light from the LED can be recognized. The same applies hereinafter in this specification.

  In the wristwatch 700, when the user presses the switch 752, the LED 724 is turned on, and a time display appears on the front surface of the watch body 710 as shown in FIG. On the other hand, when the user releases the switch 752, the LED 724 is automatically turned off, and the time display floating on the front surface of the watch main body 710 disappears as shown in FIG.

At this time, in the wristwatch 700, a transparent and opaque white coating film 730 is formed on the front surface of the LED display portion 720. Therefore, when the LED 724 is turned on, FIGS. As shown in FIG. 13B, the light L ₃ from the LED 724 passes through the white coating film 730 and is emitted from the front surface of the watch main body 710. On the other hand, when the LED 724 is turned off, FIG. ), The segment pattern of the LED display unit 720 cannot be recognized from the outside. Therefore, the wristwatch 700 is a wristwatch provided with a display structure, but does not recognize the presence of the display structure when not displayed.

14 and 15 are views for explaining the table clock 800 among the articles as described above. 14A is a perspective view of the table clock 800, and FIG. 14B is a cross-sectional view of the table clock 800 taken along the virtual plane P of FIG. 14A. FIG. 15A is a view for explaining the display state of the table clock 800 at the time of display, FIG. 15B is a perspective view of the table clock 800 at the time of display, and FIG. FIG. 15D is a perspective view of the table clock 800 in a non-display state. In FIG. 15 (a) and 15 FIG. 15 (c), the shows an enlarged portion indicated by reference sign _{B 4} in FIG. 14 (b).

  As shown in FIG. 14, the table clock 800 has a structure in which a translucent and opaque wooden sheet 830 is attached around a casing 810 having an LED display unit 820 disposed on the front surface. (For example, see Non-Patent Document 1).

  In the table clock 800, when the power is turned on and the clock display mode is set, the LED 824 is turned on, and a time display appears on the front surface of the table clock 800 as shown in FIG. On the other hand, when the display mode is changed to the non-display mode or the power supply is disconnected, the LED 824 is turned off, and the time display floating on the front surface of the table clock 800 disappears as shown in FIG.

At this time, in the table clock 800, a translucent and opaque wooden sheet 830 is attached around the casing 810. Therefore, when the LED 824 is turned on, FIGS. as shown in b), while the fact that the light _{L 3} from the LED824 is emitted from the front of the table clock 800 through the wood sheet 830, the LED824 is not lit, as shown in FIG. 15 (d) In addition, the segment pattern of the LED display unit 820 cannot be recognized from the outside. Therefore, the table clock 800 is a table clock having a display structure, but does not make the presence of the display structure unaware when not displayed.

  FIG. 16 is a diagram for explaining the cellular phone 900 among the articles as described above. 16A is a diagram for explaining the display state of the mobile phone 900 at the time of display, FIG. 16B is a front view of the mobile phone 900 at the time of display, and FIG. It is a figure shown in order to demonstrate the display state of the mobile telephone 900 at the time of a display, FIG.16 (d) is a front view of the mobile telephone 900 at the time of non-display.

  As shown in FIGS. 16B and 16D, the mobile phone 900 is selected from various replaceable jackets on the front surface of the display unit side member 910 provided with the LED display element 920. The light-transmitting and opaque black jacket 930 is attached (see, for example, Non-Patent Document 2).

  In the cellular phone 900, when the LED display mode is set, the LED 924 is turned on, and various displays appear on the front surface of the display unit side member 910 as shown in FIG. On the other hand, when the LED non-display mode is set, the LED 924 enters a non-lighting state, and as shown in FIG. 16 (d), various displays floating on the front surface of the display side member 910 disappear.

  At this time, in the mobile phone 900, a black jacket 930 having a small translucency and opaque is attached to the front surface of the display unit side member 910. Therefore, when the LED 924 is turned on, FIGS. As shown in FIG. 16B, when the light from the LED 924 is emitted from the front surface, when the LED 924 enters a non-lighting state, the dot pattern of the LED display element 920 is externally shown in FIG. Cannot be recognized. Therefore, the mobile phone 900 is a mobile phone having a display structure, but does not make the user aware of the display structure when not displaying.

Design Registration No. 1158328 Limited company scope homepage, “http://webdb.scope.ne.jp/takumi/toca/”, titled “TAKUMI / TO: CA” NTT DoCoMo's website, “http://www.nttdocomo.co.jp/product/foma/901i/p901is/”, entitled “FOMA P901iS”

  However, in the wristwatch 700, as shown in FIG. 12, since the white coating film 730 is only formed on the front surface of the LED display unit 720, the mechanical reliability of the display structure is lowered. There is one problem.

  Further, the wristwatch 700 has a second problem that the display is blurred and the visibility is lowered, and the utilization efficiency of light from the LED 724 is greatly lowered. The reason is as follows.

That is, in the wristwatch 700, as shown in FIG. 13 (a) and FIG. 13 (c), the external light _{L 1} and is irradiated to the outside light (non-segment portion to be irradiated to the front _{I o} of the watch body part 710 external light L ₂ emitted to the segment _portion) is so that the greater part thereof is diffused and reflected by the front I _o and the interior of the white paint film 730, diffused and reflected by the front I _o and the interior of the white paint film 730 Part of the light that has not been transmitted passes through the white coating film 730 and is emitted to the back surface I _i side of the white coating film 730.

At this time, a white non-transparent member 726 having a relatively large light reflectance is disposed in the non-segment portion, and a colorless translucent member 728 having a relatively small light reflectance is disposed in the segment portion. For this reason, the reflected light L ₁ ′ from the light-impermeable member 726 in the non-segment portion becomes stronger than the reflected light L ₂ ′ from the light-transmissive member 728 in the segment portion, and the LED 724 is in a non-lighting state. In this case, the segment pattern becomes conspicuous.

  Therefore, in the wristwatch 700, in order to prevent this and make the segment pattern inconspicuous when the LED 724 is in a non-lighting state, the light diffusivity of the white coating film 730 is set to a high value, or the white coating film 730 is used. As a result, the light from the LED 724 is strongly diffused by the white coating film 730, the display is blurred and the visibility is lowered, or the light from the LED 724 is white. This is because the use efficiency of light from the LED 724 is greatly reduced by being strongly absorbed by the coating film 730.

  In the table clock 800, as shown in FIG. 14, since the wood sheet 830 is only attached to the front surface of the LED display unit 820, the mechanical reliability in the display structure is lowered. There's a problem.

  Further, the table clock 800 has a second problem that the display is blurred and the visibility is lowered, or the utilization efficiency of light from the LED 824 is greatly lowered. The reason is as follows.

That is, in a table clock 800, as shown in FIG. 15 (a) and FIG. 15 (c), the external light _{L 1} and the segments are illuminated in ambient light (non-segment portion to be irradiated to the front _{I o} wood sheets 830 Most of the external light L ₂ ) irradiated on the part is diffusely reflected on the front surface _Io and the inside of the wood sheet 830, but is not diffusely reflected on the front surface _Io and the inside of the wood sheet 830. Part of the light passes through the wood sheet 830 and is emitted to the back surface I _i side of the wood sheet 830.

At this time, the white non-transparent member 826 having a relatively large light reflectance is disposed in the non-segment portion, and the colorless translucent member 828 having a relatively small light reflectance is disposed in the segment portion. Therefore, the reflected light L ₁ ′ from the non-transparent member 826 in the non-segment portion becomes stronger than the reflected light L ₂ ′ from the translucent member 828 in the segment portion, and the LED 824 is in a non-lighting state. In this case, the segment pattern becomes conspicuous.

  For this reason, in the table clock 800, in order to prevent this and make the segment pattern inconspicuous when the LED 824 is in a non-lighted state, the light diffusion rate of the wood sheet 830 is increased or the light of the wood sheet 830 is lighted. As a result, it is necessary to reduce the passing rate. As a result, the light from the LED 824 is strongly diffused by the wooden sheet 830, the display is blurred and the visibility is lowered, or the light from the LED 824 is reduced by the wooden sheet 830. This is because the utilization efficiency of light from the LED 824 is greatly reduced due to strong absorption.

  In the cellular phone 900, since the black jacket 930 is disposed on the front surface of the LED display element 920, the mechanical reliability of the display structure in the case of the wristwatch 700 and the table clock 800 is lowered. Problem 1 has been solved.

  However, the mobile phone 900 has a second problem that the display is blurred and the visibility is lowered, and the utilization efficiency of light from the LED 924 is greatly lowered. The reason is as follows.

  That is, in the mobile phone 900, since there is a gap between the black jacket 930 and the opaque member 940, the light from the LED 924 enters the gap and the black jacket 930 and the opaque member 940 This is because the display is blurred and the visibility is lowered by repeating the reflection between the two.

Further, the mobile phone 900, as shown in FIG. 16 (a) and FIG. 16 (c), the external light _{L 1} and is irradiated to the outside light (non-dot part is irradiated to the front _{I o} black jacket 930 Most of the external light L ₂ ) irradiated to the dot portion is diffusely reflected or absorbed inside the front surface I _o or inside the black jacket 930 or absorbed inside the black jacket 930. A part of the light that is not diffusely reflected and absorbed in the front surface _Io or the black jacket 930 passes through the black jacket 930 and is emitted to the back surface _Ii side of the black jacket 930.

At this time, a silver non-transparent member 940 having a relatively large light reflectance is disposed in the non-dot portion, and a colorless translucent member 942 having a relatively small light reflectance is disposed in the dot portion. For this reason, the reflected light L ₁ ′ from the non-transparent member 940 in the non-dot portion becomes stronger than the reflected light L ₂ ′ from the translucent member 942 in the dot portion, and the LED 924 is in a non-lighting state. In this case, the dot pattern will be conspicuous.

  For this reason, in the mobile phone 900, in order to prevent this and make the dot pattern inconspicuous when the LED 924 is in a non-lighting state, it is necessary to make the light transmission rate of the black jacket 930 low, As a result, light from the LED 924 is strongly absorbed by the black jacket 930, so that the light use efficiency from the LED 924 is greatly reduced.

  In the mobile phone 900, it is conceivable to increase the opacity by using a light diffusing material as the material of the black jacket 930 so that the dot pattern does not stand out when the LED 924 is in a non-lighting state. However, as the material of the black jacket 930, it is necessary to use a material that is somewhat thick in order to supplement the mechanical strength of the LED display element 920. Therefore, in this case, the light from the LED 924 is transmitted inside the black jacket 930. As a result of the strong diffusion, the problem is that the display is strongly blurred and the visibility is further reduced.

  These problems are not problems that occur only in the case of articles having LED display elements, but can occur in general articles having LD display elements, EL display elements, fluorescent tube display elements, and other light emitting display elements. It is a problem.

  Accordingly, the present invention has been made to solve the above problems, and is an article having a display structure that does not make the user aware of the presence of the display structure when not displayed, and is mechanically reliable in the display structure. An object of the present invention is to provide an article that can solve the problems of low brightness, poor display due to blurring, and a significant decrease in light use efficiency from a light emitting portion.

(1) An article provided with the display structure of the present invention is an article provided with a display structure that is not conscious of the presence of the display structure when not displayed, and the display structure is transparent on the front side of the transparent substrate. A front casing member having an opaque coating film having optical properties; a light emitting display element disposed on a back side of the front casing member; and between the front casing member and the light emitting display element. And a dark color member in which a light guide hole is formed corresponding to the light emitting portion of the light emitting display element.

  For this reason, according to the article provided with the display structure of the present invention, since the front casing member is disposed on the front surface of the light emitting display element, the mechanical reliability in the display structure is lowered. It becomes possible to solve the problem.

  Further, according to the article having the display structure of the present invention, since the dark color member having the light guide hole is disposed between the front housing member and the light emitting display element, the light diffusion of the coating film is performed. The need to increase the rate or reduce the light transmission rate of the coating film is reduced, the display is blurred and the visibility is reduced, and the light use efficiency from the light emitting part is greatly reduced. It becomes possible to solve the second problem. The reason is as follows.

  That is, of the external light irradiated on the front surface of the front housing member, a part of the light that is not diffusely reflected on the front surface or inside the coating film passes through the coating film and is emitted to the back side of the coating film. Become. However, since a dark member having a very low light reflectance is disposed in the non-display portion, the ratio of the light reflected by the dark member and emitted again from the front surface of the coating film is extremely small. On the other hand, since the light guide hole is arranged in the display portion, the light emitted to the back side of the coating film is directly guided to the inside of the light guide hole, and again from the front side of the coating film to the outside. The ratio of light emitted to the lens is extremely small. For this reason, the ratio of light that is emitted from the front of the coating film to the outside again in both the non-display area and the display area is extremely small. This is because even if the value is not set low, it is possible to suppress the conspicuous pattern (segment pattern, dot pattern, etc.) in the non-lighting state.

  Moreover, according to the article provided with the display structure of the present invention, the reflectance at the interface between the back surface of the transparent base material and the front surface of the dark member is extremely low, so that light from the light emitting part is incident obliquely on the transparent base material. Thereafter, the display is not blurred due to repeated reflection between the front surface and the back surface of the transparent base material, and the visibility is not deteriorated.

  Moreover, according to the article provided with the display structure of the present invention, even if the thickness of the front casing member is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film is originally thinner than the front casing member. For this reason, the light from the light emitting part is not diffused by the strong diffusion inside the coating film, and the visibility is not deteriorated.

  In the article provided with the display structure described in (1) above, it is preferable that the front housing member and the dark member are arranged in close contact with each other.

  With this configuration, light from the light emitting unit does not enter the gap between the front casing member and the dark member and repeat reflection between them, and this causes the display to blur. Thus, the visibility is not lowered.

(2) In the article provided with the display structure according to the above (1), it is preferable that the dark color member is disposed over substantially the entire back side of the front housing member.

  With this configuration, since the dark color member is disposed over almost the entire back side of the front housing member, either the portion where the light emitting display element is disposed or the portion where the light emitting display element is not disposed However, the amount of light emitted from the front surface of the coating film during non-display becomes more uniform, and it is possible to further suppress the presence of the display structure during non-display.

(3) In the article provided with the display structure according to (1) or (2) above, a portion of the front housing member where the dark color member is disposed is thinner than a peripheral portion thereof. It is preferable to have.

  By configuring in this way, while maintaining the mechanical reliability in the display structure, the thickness of the transparent base material in the portion where the light emitting display element is disposed is made thinner, and from the light guide hole to the coating film Since the distance can be reduced, it is possible to prevent the display from blurring and the visibility from being lowered due to the large spread of light from the light emitting portion before reaching the coating film.

(4) In the article provided with the display structure according to any one of (1) to (3), the front housing member is preferably integrated with the dark member.

  With this configuration, the display structure can be made more compact.

  In the article provided with the display structure according to any one of the above (1) to (4), coating films of various colors including white, gray, black, red, green, and blue are used as the coating film. be able to.

  In this case, if the coating film is a coating film having a relatively high brightness, the display will appear on the coating film having a relatively high brightness only when the light emitting part is lit. Will be extremely innovative.

(5) An article provided with the display structure of the present invention is an article provided with a display structure that is not conscious of the presence of the display structure when not displayed, and the display structure is a front surface of a low light-transmitting substrate. A front casing member having a translucent opaque coating film formed on the side, a light emitting display element disposed on the back side of the front casing member, the front casing member and the light emitting display element, And a light guide member having a light guide hole formed corresponding to the light emitting portion of the light emitting display element.

  For this reason, according to the article provided with the display structure of the present invention, since the front casing member is disposed on the front surface of the light emitting display element, the mechanical reliability in the display structure is lowered. It becomes possible to solve the problem.

  Moreover, according to the article provided with the display structure of the present invention, since the coating film is formed on the low-light-transmitting substrate, the necessity for setting the light transmission rate of the coating film to a low value is reduced, and the display is performed. It is possible to solve the second problem that the visibility is lowered due to bleeding and the utilization efficiency of light from the light emitting portion is greatly reduced. The reason is as follows.

  That is, of the external light irradiated on the front surface of the front housing member, a part of the light that is not diffusely reflected on the front surface or inside the coating film passes through the coating film and is emitted to the back side of the coating film. Become. However, since the intensity of the light emitted to the back side of the coating film attenuates while passing through the low light-transmitting substrate, it is reflected by the surface of the light guide member and is emitted to the outside again from the front surface of the coating film. The proportion of light that is transmitted is reduced. On the other hand, since the light guide hole is arranged in the display portion, the light emitted to the back side of the coating film is directly guided to the inside of the light guide hole, and again from the front side of the coating film to the outside. The ratio of the light emitted to is small. For this reason, the proportion of light that is emitted from the front of the coating film to the outside again in both the non-display part and the display part is small, so that the non-lighting state is maintained even if the light transmission rate of the coating film is not relatively low. This is because in this case, the conspicuous pattern (segment pattern, dot pattern, etc.) is suppressed.

  Further, according to the article provided with the display structure of the present invention, since the light transmission rate of the low light-transmitting base material is low, the light from the light emitting part is incident on the low light-transmitting base material obliquely, By repeating reflection between the front surface and the back surface of the light base material, the display is not blurred and the visibility is not lowered.

  Moreover, according to the article provided with the display structure of the present invention, even if the thickness of the front casing member is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film is originally thinner than the front casing member. For this reason, the light from the light emitting part is not diffused by the strong diffusion inside the coating film, and the visibility is not deteriorated.

  In the article provided with the display structure described in (4) above, it is preferable that the front housing member and the light guide member are arranged in close contact with each other.

  With this configuration, light from the light emitting unit does not enter the gap between the front housing member and the light guide member and repeat reflection between them. The visibility will not be lost due to bleeding.

(6) In the article provided with the display structure according to (5) above, a portion of the front housing member where the light guide member is disposed may have a thinner thickness than a surrounding portion. preferable.

  With this configuration, while maintaining the mechanical reliability in the display structure, the thickness of the low light-transmitting substrate in the portion where the light-emitting display element is disposed is made thinner, and coating is performed from the light guide hole. Since it is possible to reduce the distance to the film, it is possible to suppress the display from blurring and the visibility from being reduced by the light from the light emitting part spreading greatly before reaching the coating film. Become.

(7) In the article provided with the display structure according to (5) or (6), it is preferable that the front housing member is integrated with the light guide member.

  With this configuration, the display structure can be made more compact.

  In the article provided with the display structure according to any one of the above (5) to (7), coating films of various colors including white, gray, black, red, green, and blue are used as the coating film. be able to.

  In this case, if the coating film is a coating film having a relatively high brightness, the display will appear on the coating film having a relatively high brightness only when the light emitting part is lit. Will be extremely innovative.

(8) An article provided with the display structure of the present invention is an article provided with a display structure that is not conscious of the presence of the display structure when not displayed. The display structure includes a light emitting display element and the light emitting display. All or part of the light guide is disposed on the front side of the element, a light guide is formed corresponding to the light emitting part of the light emitting display element, and the front side is flat. A dark housing member having a structure filled with the member, and an opaque coating film having translucency is formed on the front surface side of the dark housing member.

  For this reason, according to the article provided with the display structure of the present invention, all or a part of the light guide portion is filled with the translucent member so that the front side surface is flat on the front surface of the light emitting display element. Since the dark housing member having the structure is disposed, it is possible to solve the first problem that the mechanical reliability in the display structure is lowered.

  Moreover, according to the article provided with the display structure of the present invention, since the dark housing member having the light guide portion is disposed between the coating film and the light emitting display element, the above (1) For the same reason as the case of the article with the described display structure, the necessity to increase the light diffusivity of the coating film or the light transmission rate of the coating film is reduced, and the display is blurred and visually recognized. It is possible to solve the second problem that the efficiency is lowered or the utilization efficiency of light from the light emitting part is greatly lowered.

  Further, according to the article provided with the display structure of the present invention, even if the thickness of the dark casing member is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film is formed on the front side of the dark casing member. Since it is formed, the display does not spread due to the large spread of light from the light emitting portion before reaching the coating film, and the visibility is not lowered.

  Further, according to the article provided with the display structure of the present invention, it is possible to minimize the distance from the light guide unit to the coating film while maintaining the mechanical reliability in the display structure. It is possible to suppress as much as possible that the display is blurred and the visibility is lowered due to the large spread of the light before reaching the coating film.

  In the article provided with the display structure described in (8) above, coating films of various colors including white, gray, black, red, green, and blue can be used as the coating film.

  In this case, if the coating film is a coating film having a relatively high brightness, the display will appear on the coating film having a relatively high brightness only when the light emitting part is lit. Will be extremely innovative.

(9) In the article provided with the display structure according to any one of (1) to (8), the coating film includes a light-transmitting hard film, a color imparting film, and a film having light diffusibility. However, it is preferable that at least the translucent hard film has a laminated structure so as to be disposed on the most front side.

  By comprising in this way, since it has the film | membrane which has a light diffusibility, it becomes possible to comprise the opaque coating film which has translucency. Moreover, since it has a color-imparting film, it is possible to construct coating films of various colors including red, green, and blue. Furthermore, since the translucent hard film is disposed on the foremost side of the coating film, the mechanical reliability on the display surface of the article can be improved. The color imparting film includes a film imparting a color composed of white, gray, and black.

(10) An article provided with the display structure of the present invention is an article provided with a display structure that is not conscious of the presence of the display structure when not displayed, and the display structure is transparent on the back side of the transparent substrate. A front casing member having an opaque coating film having optical properties; a light emitting display element disposed on a back side of the front casing member; and between the front casing member and the light emitting display element. And a dark color member in which a light guide hole is formed corresponding to the light emitting portion of the light emitting display element.

  For this reason, according to the article provided with the display structure of the present invention, since the front casing member is disposed on the front surface of the light emitting display element, the mechanical reliability in the display structure is lowered. It becomes possible to solve the problem.

  Moreover, according to the article provided with the display structure of the present invention, the dark color member having the light guide hole is disposed between the front housing member and the light emitting display element. For the same reason as the article with the display structure described, the need to increase the light diffusivity of the coating film or lower the light transmission rate of the coating film is reduced, and the display blurs and is visible It becomes possible to solve the 2nd problem that the utilization efficiency of the light from a light emission part falls significantly.

  Further, according to the article provided with the display structure of the present invention, even if the thickness of the front casing member is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film is formed on the back side of the front casing member. Since it is formed, the display does not spread due to the large spread of the light from the light emitting part before it reaches the coating film, and the visibility does not deteriorate.

  Further, according to the article provided with the display structure of the present invention, it is possible to minimize the distance from the light guide hole to the coating film while maintaining the mechanical reliability in the display structure. It is possible to suppress as much as possible that the display is blurred and the visibility is lowered due to the large spread of the light before reaching the coating film.

  Furthermore, according to the article provided with the display structure of the present invention, the coating film is formed on the back side of the transparent substrate, and the display is made on the back side of the transparent substrate at the time of display. It will be extremely innovative.

(11) In the article provided with the display structure according to the above (10), it is preferable that the dark color member is disposed over substantially the entire back side of the front housing member.

  With this configuration, since the dark color member is disposed over almost the entire back side of the front housing member, either the portion where the light emitting display element is disposed or the portion where the light emitting display element is not disposed However, the amount of light emitted from the front surface of the coating film during non-display becomes more uniform, and it is possible to further suppress the presence of the display structure during non-display.

  In the article provided with the display structure according to the above (10) or (11), a coating film of various colors including white, gray, black, red, green, and blue can be used as the coating film. .

  In this case, if the coating film is a coating film having a relatively high brightness, the display will appear on the coating film having a relatively high brightness only when the light emitting part is lit. Will be extremely innovative.

(12) In an article provided with the display structure according to (10) or (11) above, the coating film preferably has a structure in which a color-imparting film and a film having light diffusibility are laminated. .

By comprising in this way, since it has the film | membrane which has a light diffusibility, it becomes possible to comprise the opaque coating film which has translucency. Moreover, since it has a color-imparting film, it is possible to construct coating films of various colors including red, green, and blue. Note that the color-imparting film includes a film imparting a color composed of white, gray, and black, as in the case of the article having the display structure described in (9) above.
In this case, by using a transparent substrate with high mechanical reliability and chemical reliability as the transparent substrate, or by applying a coating with high mechanical reliability and chemical reliability on the front side of the transparent substrate. It is also preferable to increase the mechanical reliability on the display surface of the article. Moreover, it is also preferable to use the coating film which has a translucent hard film on the surface as a coating film.

(13) In an article provided with the display structure according to any one of (1) to (12) above, a reflective layer that reflects light from the light emitting part around the light emitting part in the light emitting display element Is preferably formed.

  With this configuration, the light emitted from the light emitting unit to the back side is reflected by the reflection layer and guided to the light guide hole or the light guide unit, so that the light use efficiency can be further increased.

(14) An article having the display structure according to any one of (1) to (13) is a wristwatch, a table clock, a mobile phone, a portable device, a home appliance, an office device, an electronic device, furniture, a display board, a wall It is particularly effective when it is a wall component, a building or a vehicle.

  As described above, the article provided with the display structure according to any one of (1) to (13) is an article provided with the display structure, but does not make the user aware of the presence of the display structure when not displayed. Since it is an article, it can be preferably used for various applications as described above.

  In the article having the display structure of the present invention, as the “light emitting display element”, an LED (light emitting diode) display element, an LD (laser diode) display element, an EL (electroluminescence) display element, or the like is preferably used. be able to.

  Further, in the article provided with the display structure of the present invention, the “front casing member” or “dark casing member” may be a member constituting the entire casing on the front side of the article, or the front surface of the article. The member which comprises the principal part of the side housing | casing may be sufficient.

  Further, in the article provided with the display structure of the present invention, the “front surface” means a surface on the side where display is performed by the light emitting display element, and is not limited to the actual front surface of the article, but the upper surface of the article, the rear surface of the article It may be a surface such as a side surface of the article.

  Further, in the article provided with the display structure of the present invention, the “dark member” or “dark casing member” means that the light reflectance is extremely low, and the front casing member side or the coating film reflects light from the front surface. A member that hardly re-enters the casing member or the coating film. A black member is preferably used as the dark member or the dark casing member.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment 1]
In the first embodiment, the present invention will be described using a mobile phone as an example.

  1-3 is a figure shown in order to demonstrate the mobile telephone 100 which concerns on Embodiment 1. FIG. FIG. 1A is a perspective view of the mobile phone 100 when the display unit side member 102 is opened so that the liquid crystal display unit 104 can be seen, and FIG. 1B is a mobile phone when the display unit side member 102 is closed. 1 is a side view of a telephone 100. FIG. 2A is a perspective view of the mobile phone 100 during display, and FIG. 2B is a perspective view of the mobile phone 100 during non-display. FIG. 3A is a front view of the mobile phone 100 during display, and FIG. 3B is a front view of the mobile phone 100 during non-display.

FIG. 4 is an exploded perspective view of the mobile phone 100 according to the first embodiment. 5 and 6 are diagrams for explaining the mobile phone 100 according to the first embodiment. FIG. 5A is a diagram schematically showing a main part of the display unit side member 102 in the A ₁ -A ₁ cross section of FIG. 1B, and FIG. 5B is a symbol B in FIG. is an enlarged view at the time of display of the portion indicated by _1, and FIG. 5 (c) is an enlarged view of the non-display when the portion indicated by reference sign _{B 1} in FIG. 5 (a), FIG. 5 (d) is from LED124 It is a figure which shows a mode that the light is carrying out multiple reflection inside the transparent base material 132. FIG. FIG. 6A is a diagram schematically showing the structure of the coating film 130 in the mobile phone 100, and FIG. 6B is a diagram schematically showing the structure of the coating film 130 'in the first modification. In FIG. 5A, illustration of the liquid crystal display unit 104, the control unit, and the like is omitted.

  As shown in FIG. 1, the mobile phone 100 according to the first embodiment includes a display unit side member 102, an operation unit side member 106, and a hinge unit, and the display unit side member 102 and the operation unit side member 106 are provided. The hinge parts are connected to each other so as to be rotatable. The display unit side member 102 is provided with a liquid crystal display unit 104 and a speaker for reception, and the operation unit side member 106 is provided with an operation button 106 and a microphone for transmission.

  As shown in FIGS. 2 and 3, the mobile phone 100 according to the first embodiment is a mobile phone having a display structure that does not make the user aware of the presence of the display structure when the display is not displayed. Alternatively, as shown in FIG. 5A, a front casing member 130 in which a transparent coating film 134 having translucency is formed on the front side of the transparent substrate 132 and a rear side of the front casing member 130 are arranged. An LED display element 120 as a light emitting display element provided, and a dark color member 140 disposed between the front housing member 130 and the LED display element 120 and having a light guide hole 142 corresponding to the LED 124. Have. The LED display element 120 includes an LED circuit board 122, an LED 124 as a light emitting unit, and a reflective layer 126.

  For this reason, according to the mobile phone 100 according to the first embodiment, the front casing member 130 in which the opaque display film 134 having translucency is formed on the front surface side of the transparent base material 132 on the front surface of the LED display element 120. Therefore, the first problem that the mechanical reliability of the display structure is lowered can be solved.

  Further, according to the mobile phone 100 according to the first embodiment, the dark color member 140 in which the light guide hole 142 is formed corresponding to the LED 124 is disposed between the front housing member 130 and the LED display element 120. Therefore, it is not necessary to increase the light diffusivity of the coating film 134 or to decrease the light transmission rate of the coating film 134, the display blurs and the visibility decreases, or the light from the LED 124 is used. It becomes possible to solve the second problem that the efficiency is greatly reduced. The reason for this is as follows.

That is, as shown in FIGS. 5B and 5C, out of the external light L ₁ and L ₂ irradiated on the front surface of the front casing member 130, diffuses on the front surface I _o of the coating film 134 or inside. Some of the light that is not reflected passes through the coating film 134 and is emitted to the back surface I _i side of the coating film 134. However, this means that a very small dark member 140 of the light reflectance is disposed in the non-display area, the proportion of the light emitted again outside from the front I _o of the coating film 134 is reflected by the dark color member 140 Extremely small. On the other hand, since the light guide hole 142 is disposed in the display portion, the light emitted to the back surface I _i side of the coating film 134 is guided as it is to the inside of the light guide hole 142. the proportion of the light emitted again to the outside from the front I _o of 134 is extremely small. Therefore, since the proportion of light emitted again outside from the front I _o of the coating film 134 becomes extremely small in the even display portion in the non-display portion, painting or the light diffusivity of the coating film 134 at a high value film 134 This is because it is possible to suppress the conspicuous pattern (segment pattern, dot pattern, etc.) in the non-lighting state even if the light transmission rate is not set to a low value.

  Further, according to the mobile phone 100 according to the first embodiment, since the reflectance at the interface between the back surface of the transparent base material 132 and the front surface of the dark color member 140 is extremely low, as shown in FIG. After light is incident obliquely on the transparent base material 132, the display is not blurred due to repeated reflection between the front surface and the back surface of the transparent base material 132, and the visibility is not lowered.

  In addition, according to the mobile phone 100 according to the first embodiment, even if the thickness of the front casing member 130 is increased to some extent in order to increase the mechanical reliability of the display structure, the coating film 134 is originally more than the front casing member 130. Since the light from the LED 124 is strongly diffused inside the coating film 134, the display is not blurred and the visibility is not lowered.

  In the mobile phone 100 according to the first embodiment, as shown in FIG. 5, the front housing member 130 and the dark member 140 are arranged in close contact with each other.

  For this reason, according to the mobile phone 100 according to the first embodiment, the light from the LED 124 does not enter the gap between the front housing member 130 and the dark member 140 and repeat reflection between them. This prevents the display from blurring and the visibility from decreasing.

  In the mobile phone 100 according to the first embodiment, the dark color member 140 is disposed over substantially the entire back side of the front housing member 130 as shown in FIG.

  For this reason, according to the mobile phone 100 according to the first embodiment, the dark color member 140 is disposed over almost the entire back side of the front casing member 130, and therefore the portion where the LED display element 120 is disposed and the LED display. In any part where the element 120 is not provided, the amount of light emitted from the front surface of the coating film 134 becomes more uniform when not displayed, further suppressing the presence of the display structure when not displayed. Is possible.

  In the mobile phone 100 according to the first embodiment, as shown in FIG. 5A, the portion of the front housing member 130 where the dark color member 140 is disposed has a thinner thickness than the surrounding portion. The front housing member 130 is integrated with the dark member 140. The integration of the front housing member 130 and the dark member 140 can be performed by, for example, two-color molding (a molding technique for molding two similar materials having different colors), ultrasonic welding, or use of an adhesive. As the transparent base material 132, for example, one made of colorless and transparent polycarbonate can be used, and as the dark member 140, for example, polycarbonate colored in black can be used. After the LED display element 120 is set from the lower side in FIG. 5A with respect to the dark member 140 integrated with the front housing member 130, the LED display element 120 is fixedly installed on the dark member 140 by means such as baking. .

  For this reason, according to the mobile phone 100 according to the first embodiment, the thickness of the transparent substrate 132 in the portion where the LED display element 120 is disposed is made thinner while maintaining the mechanical reliability of the display structure. Since the distance from the light guide hole 142 to the coating film 134 can be reduced, the light from the LED 124 spreads greatly until it reaches the coating film 134, and the display blurs and visibility decreases. Can be suppressed. In addition, the display structure can be made more compact.

  In the mobile phone 100 according to the first embodiment, paint films of various colors including white, gray, black, red, green, and blue can be used as the paint film 134.

  In this case, when the coating film 134 is a coating film having a relatively high brightness, the display appears on the coating film 134 having a relatively high brightness only when the LED 124 is turned on. Will be extremely innovative.

  In the mobile phone 100 according to the first embodiment, as shown in FIGS. 4 and 5, the reflective layer 126 that reflects the light from the LED 124 around the LED 124 (the surface of the LED circuit board 122) in the LED display element 120. Is formed.

  For this reason, according to the mobile phone 100 according to the first embodiment, the light emitted from the LED 124 to the back side is reflected by the reflection layer 126 and guided to the light guide hole 142, so that the light use efficiency can be further increased. It becomes possible.

  In the mobile phone 100 according to the first embodiment, as shown in FIG. 6A, the coating film 134 includes a translucent hard film 134a, a color imparting film 134b, and a light diffusing film 134c. The translucent hard film 134a is laminated in this order so that it is disposed on the foremost side.

  For this reason, according to the mobile phone 100 according to the first embodiment, since the film 134c having light diffusibility is provided, an opaque coating film having translucency can be configured. In addition, since the mobile phone 100 according to the first embodiment includes the color-imparting film 134b, it is possible to configure coating films of various colors including red, green, and blue. Furthermore, since the translucent hard film 134a is disposed on the forefront side of the coating film 134, the mechanical reliability on the display surface of the mobile phone 100 can be enhanced. The color imparting film 134b also includes a film imparting a color composed of white, gray, and black. As the light diffusing film 134c, for example, a white film can be used.

[Modification 1]
In the mobile phone 100 ′ (not shown) according to the first modification, as shown in FIG. 6B, the coating film 134 ′ includes a translucent hard film 134a and a light diffusing film 134c. The color-imparting film 134b has a structure in which the translucent hard film 134a is laminated in this order so that it is disposed on the most front side.

  For this reason, according to the mobile phone 100 ′ according to the first modification, as in the case of the mobile phone 100 according to the first embodiment, an opaque paint film having translucency can be configured, and red, green, It becomes possible to construct coating films of various colors including blue, and it is possible to improve the mechanical reliability on the display surface of the mobile phone 100.

[Embodiment 2]
In the second embodiment, the present invention will be described using a mobile phone as an example, as in the first embodiment.

FIG. 7 is a diagram for explaining the mobile phone 200 according to the second embodiment. 7 (a) is a diagram showing a main portion of the display unit side member 202 schematically, and FIG. 7 (b) is an enlarged view at the time of display of a portion indicated by reference sign B ₂ in FIGS. 7 (a), FIG. 7C is an enlarged view when the portion indicated by reference numeral B ₂ in FIG. 7A is not displayed, and FIG. 7D is a diagram in which the light from the LED 224 is multiplexed inside the low light-transmitting substrate 232. It is a figure which shows a mode that it is reflecting.

  As shown in FIG. 7, the mobile phone 200 according to the second embodiment has a configuration similar to that of the mobile phone 100 according to the first embodiment, but a black pigment is mixed in a transparent resin instead of the transparent base material. According to the first embodiment, it has a gray light guide member 240 in which a light guide hole 242 is formed corresponding to the LED 224 in place of the dark smoke member and the smoked low light-transmitting base material 232. Different from the mobile phone 100.

  As described above, the mobile phone 200 according to the second embodiment relates to the first embodiment in that the mobile phone 200 according to the second embodiment has the low light-transmitting base material 232 instead of the transparent base material and the light guide member 240 instead of the dark color member. Although different from the mobile phone 100, as in the case of the mobile phone 100 according to the first embodiment, the front casing member 230 is disposed on the front surface of the LED display element 220. It becomes possible to solve the first problem that becomes low.

  Further, according to the mobile phone 200 according to the second embodiment, since the coating film 234 is formed on the low light-transmitting base material 232, the necessity of setting the light transmission rate of the coating film 234 to a low value is reduced. It is possible to solve the second problem that the display is blurred and the visibility is lowered, or the utilization efficiency of the light from the LED 224 is greatly lowered. The reason for this is as follows.

That is, as shown in FIG. 7B or FIG. 7C, out of the external light L ₁ and L ₂ irradiated on the front surface of the front housing member 230, the light diffuses in the front surface _Io or inside of the coating film 234. Some of the light that is not reflected passes through the coating film 234 and is emitted to the back surface I _i side of the coating film 234. However, since the intensity of the light emitted to the back surface I _i side of the coating film 234 is attenuated while passing through the low light-transmitting substrate 232, the light is reflected on the surface of the light guide member 240 and the front surface of the coating film 234. The ratio of the light emitted from _Io to the outside again becomes small. On the other hand, since the light guide hole 242 is disposed in the display portion, the light emitted to the back surface I _i side of the coating film 234 is directly guided to the inside of the light guide hole 242, and again the coating film the proportion of the light emitted again to the outside from the front I _o 234 decreases. Therefore, since the proportion of light emitted again to the outside from the front I _o of the coating film 234 becomes small in the even display portion in the non-display portion, without the light passing rate of the coating film 234 to a relatively low value This is because the conspicuous pattern (segment pattern, dot pattern, etc.) is suppressed in the non-lighting state.

  Further, according to the mobile phone 200 according to the second embodiment, since the light transmission rate of the low light transmissive substrate 232 is low, the light from the LED 224 is low light transmissive substrate as shown in FIG. After obliquely entering 232, the display is not blurred due to repeated reflection between the front surface and the back surface of the low light-transmitting substrate 232, and the visibility is not lowered.

  Further, according to the mobile phone 200 according to the second embodiment, even if the thickness of the front casing member 230 is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film 224 is originally more than the front casing member 230. Since the light from the LED 224 is strongly diffused inside the coating film 234, the display is not blurred and the visibility is not lowered.

  The mobile phone 200 according to the second embodiment is related to the first embodiment except for the point having the low light-transmitting base material 232 instead of the transparent base material and the point having the light guide member 240 instead of the dark color member. Since the mobile phone 100 has the same configuration as the mobile phone 100, the mobile phone 100 according to the first embodiment has the corresponding effect as it is.

[Embodiment 3]
In the third embodiment, the present invention will be described with reference to an example of a display board embedded in an outer wall.

FIG. 8 is a view for explaining the display panel 300 according to the third embodiment. FIG. 8A is a front view of the display panel 300, and FIG. 8B is a diagram schematically showing the A ₂ -A ₂ cross section of FIG. 8A. FIG. 8C and FIG. FIG. 6D is a front view showing an outer wall 350 configured using a large number of display panels 300. FIG. 8C is a front view of the outer wall 350 at the time of display, and FIG. 8D is a front view of the outer wall 350 at the time of non-display.

  As shown in FIGS. 8C and 8D, the display board 300 according to the third embodiment is a display board having a display structure that does not make the user aware of the presence of the display structure when not displayed. As shown in FIG. 8B, the display structure includes a front casing member 330 in which an opaque coating film 334 having translucency is formed on the front surface side of the transparent base material 332, and a rear surface of the front casing member 330. LED display element 320 disposed on the side, and dark member 340 disposed between front housing member 330 and LED display element 320 and having light guide hole 342 formed corresponding to LED 324. The display structure of the display panel 300 according to the third embodiment has substantially the same configuration as the display structure of the mobile phone 100 according to the first embodiment.

  For this reason, according to the display panel 300 according to the third embodiment, the front casing member 330 in which an opaque coating film 334 having translucency is formed on the front surface side of the transparent base material 332 on the front surface of the LED display element 320. Therefore, the first problem that the mechanical reliability of the display structure is lowered can be solved.

  Further, according to the display panel 300 according to the third embodiment, the dark color member 340 in which the light guide hole 342 is formed corresponding to the LED 324 is disposed between the front housing member 330 and the LED display element 320. Therefore, as in the case of the mobile phone 100 according to the first embodiment, it is not necessary to increase the light diffusivity of the coating film 334 or to decrease the light transmission rate of the coating film 334, and the display is reduced. It is possible to solve the second problem that the visibility is lowered due to bleeding and the utilization efficiency of light from the LED 324 is greatly reduced.

  Further, according to the display panel 300 according to the third embodiment, since the reflectance at the interface between the back surface of the transparent base material 332 and the front surface of the dark member 340 is extremely low, the light from the LED 324 is incident on the transparent base material 332 obliquely. After that, the display is not blurred due to repeated reflection between the front surface and the back surface of the transparent base material 332, and the visibility is not deteriorated.

  Further, according to the display panel 300 according to the third embodiment, even if the thickness of the front casing member 330 is increased to some extent in order to increase mechanical reliability in the display structure, the coating film 334 is originally more than the front casing member 330. Since the light from the LED 324 is strongly diffused inside the coating film 334, the visibility is not lowered.

  In the display panel 300 according to the third embodiment, the front housing member 330 and the dark member 340 are arranged in close contact with each other.

  For this reason, according to the display board 300 according to the third embodiment, the light from the LED 324 does not enter the gap between the front housing member 330 and the dark member 340 and repeat reflection between them. Therefore, the display is not blurred and the visibility is not lowered.

  In the display panel 300 according to the third embodiment, the dark color member 340 is disposed over substantially the entire back side of the front housing member 330.

  For this reason, according to the display panel 300 according to the third embodiment, the dark color member 340 is disposed over substantially the entire back side of the front housing member 330, and therefore the portion where the LED display element 320 is disposed and the LED display. In any part where the element 320 is not provided, the amount of light emitted from the front surface of the coating film 334 becomes more uniform when not displayed, and it is possible to further suppress the presence of the display structure when not displayed. become.

  In the display panel 300 according to the third embodiment, the portion of the front housing member 330 on which the dark color member 340 is disposed has a thinner thickness than the surrounding portion, and the front housing member 330 is connected to the dark color member 340. It is integrated.

  Therefore, according to the display panel 300 according to the third embodiment, while maintaining the mechanical strength in the display structure, the thickness of the transparent base material 332 in the portion where the LED display element 320 is disposed is further reduced, Since the distance from the light guide hole 342 to the coating film 334 can be reduced, the light from the LED 324 spreads greatly before reaching the coating film 334, and the display blurs and visibility decreases. Can be suppressed. In addition, the display structure can be made more compact.

  In the display panel 300 according to the third embodiment, as the coating film 334, coating films of various colors including white, gray, black, red, green, and blue can be used.

  In this case, if the coating film 334 is a coating film having a relatively high brightness, the display will appear on the coating film 334 having a relatively high brightness only when the LED 324 is turned on. Will be extremely innovative.

  In the display panel 300 according to the third embodiment, as shown in FIG. 8B, a reflective layer 326 that reflects light from the LED 324 is provided around the LED 324 (the surface of the LED circuit board 322) in the LED display element 320. Is formed.

  Therefore, according to the display panel 300 according to the third embodiment, the light emitted from the LED 324 to the back side is reflected by the reflective layer 326 and guided to the light guide hole 342, so that the light use efficiency can be further increased. It becomes possible.

  In the display panel 300 according to the third embodiment, the coating film 334 includes a light-transmitting hard film, a color imparting film, and a film having light diffusibility, as in the case of the mobile phone 100 according to the first embodiment. However, it has the structure laminated | stacked in this order so that a translucent hard film may be arrange | positioned at the forefront side.

  For this reason, according to the display panel 300 according to the third embodiment, since the film having the light diffusibility is provided, an opaque coating film having a light transmissive property can be configured. Moreover, according to the display board 300 which concerns on Embodiment 3, it has a color provision film | membrane, Therefore It becomes possible to comprise the coating film of various colors including red, green, and blue. Furthermore, since the translucent hard film is disposed on the forefront side of the coating film 334, the mechanical reliability on the display surface of the display panel 300 can be enhanced.

[Embodiment 4]
In the fourth embodiment, as in the third embodiment, the present invention will be described with reference to an example of a display board embedded in an outer wall.

FIG. 9 is a view for explaining the display panel 400 according to the fourth embodiment. 9 (a) is a front view of the display panel 400, FIG. 9 (b) is a diagram schematically showing the _A 3 -A ₃ section of FIG. 9 (a), 9 (c) and 9 FIG. 4D is a front view showing an outer wall 450 configured using a large number of display panels 400. 9C is a front view of the outer wall 450 at the time of display, and FIG. 9D is a front view of the outer wall 450 at the time of non-display.

  As shown in FIG. 9, the display panel 400 according to the fourth embodiment has a configuration similar to that of the display board 300 according to the third embodiment. However, a black pigment is mixed in the transparent resin instead of the transparent base material. According to the third embodiment, the light guide member 440 includes a gray light guide member 440 in which a light guide hole 442 is formed corresponding to the LED 424 instead of the dark smoke member and the dark color member. Different from the display panel 300.

  As described above, the display panel 400 according to the fourth embodiment relates to the third embodiment in that the display board 400 has the low light-transmitting base material 432 instead of the transparent base material and the light guide member 440 instead of the dark color member. Although different from the display panel 300, as in the case of the display panel 300 according to the third embodiment, the front casing member 330 is disposed on the front surface of the LED display element 420, so that mechanical reliability in the display structure is achieved. It becomes possible to solve the first problem that becomes low.

  Further, according to the display panel 400 according to the fourth embodiment, since the coating film 434 is formed on the low light-transmitting base material 432, the coating film 434 is formed in the same manner as in the case of the mobile phone 200 according to the second embodiment. The necessity of lowering the light transmission rate is reduced, and it is possible to solve the second problem that the display is blurred and the visibility is lowered or the utilization efficiency of light from the LED 424 is greatly lowered. Become.

  Moreover, according to the display board 400 which concerns on Embodiment 4, since the light transmittance of the low translucent base material 432 is low, after the light from LED424 enters into the low translucent base material 432 diagonally, it is low translucency. By repeating reflection between the front surface and the back surface of the optical base material 432, the display is not blurred and the visibility is not deteriorated.

  Further, according to the display panel 400 according to the fourth embodiment, even if the thickness of the front casing member 430 is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film 434 is originally more than the front casing member 430. Since the light from the LED 424 is strongly diffused inside the coating film 434, the display is not blurred and the visibility is not lowered.

  In addition, the display board 400 which concerns on Embodiment 4 concerns on Embodiment 3 except the point which replaces with a transparent base material, and has the light guide member 440 instead of the point which has the low translucent base material 432. Since it has the same configuration as the display panel 300, it has the corresponding effect as it is among the effects of the display panel 300 according to the third embodiment.

[Embodiment 5]
In the fifth embodiment, the present invention will be described with reference to an example of a display board that is used by being attached to an upper part of an entrance / exit of an elevator.

FIG. 10 is a view for explaining the display panel 500 according to the fifth embodiment. 10 (a) is a front view of the display panel 500, FIG. 10 (b) is a diagram schematically showing the _A 4 -A ₄ cross section of FIG. 10 (a), FIG. 10 (c) and 10 (D) is a front view which shows the entrance and exit of the elevator 550 when the display board 500 is attached. FIG. 10C is a front view showing the entrance / exit of the elevator 550 during display, and FIG. 10D is a front view showing the entrance / exit of the elevator 550 during non-display.

  As shown in FIGS. 10C and 10D, when the sensor 552 detects that a person has approached the vicinity of the entrance / exit of the elevator 550, the display board 500 according to Embodiment 5 It is configured to display whether it is on the floor or not to display anything when the sensor 552 detects that there is no person near the entrance of the elevator 550.

  As shown in FIGS. 10C and 10D, the display board 500 according to the fifth embodiment is a display board having a display structure that is not conscious of the existence of the display structure when not displayed. As shown in FIG. 10B, the display structure is disposed on the front side of the LED display element 520 and the LED display element 520, a light guide portion 542 is formed corresponding to the LED 524, and the surface on the front side is A dark housing member 540 having a structure in which all or a part of the light guide portion 542 is filled with a light transmissive member so as to be flat, and the front surface side of the dark housing member 540 is light transmissive. An opaque coating film 534 is formed.

  For this reason, according to the display panel 500 according to the fifth embodiment, all or part of the light guide unit 542 is filled with a translucent member so that the front surface of the LED display element 520 is a flat surface. Since the dark housing member 540 having the above structure is provided, it is possible to solve the first problem that the mechanical reliability of the display structure is lowered.

  Further, according to the display board 500 according to the fifth embodiment, the dark housing member 540 in which the light guide part 542 is formed corresponding to the LED 524 is disposed between the coating film 534 and the LED display element 520. Therefore, the necessity of increasing the light diffusivity of the coating film 534 or lowering the light transmission rate of the coating film 534 is reduced, and the display board 300 according to the third embodiment or the display board 400 according to the fourth embodiment is reduced. Similarly to the case, it is possible to solve the second problem that the display is blurred and the visibility is lowered, or the utilization efficiency of the light from the LED 524 is greatly lowered.

  In addition, according to the display panel 500 according to the fifth embodiment, even if the thickness of the dark casing member 540 is increased to some extent in order to increase the mechanical reliability of the display structure, the coating film is formed on the front side of the dark casing member 540. Since 534 is formed, the display does not spread due to a large spread of the light from the LED 524 until it reaches the coating film 534, and the visibility does not deteriorate.

  In the display panel 500 according to the fifth embodiment, the distance from the light guide unit 542 to the coating film 534 can be reduced as much as possible while maintaining the mechanical reliability in the display structure. It is possible to suppress as much as possible that the display spreads and the visibility deteriorates due to the large spread of light before reaching the coating film 534.

  In the display panel 500 according to the fifth embodiment, a coating film of various colors including white, gray, black, red, green, and blue can be used as the coating film 534.

  In this case, when the coating film 534 is a coating film having a relatively high brightness, the display appears on the coating film 534 having a relatively high brightness only when the LED 524 is turned on. Will be extremely innovative.

  In the display panel 500 according to the fifth embodiment, as shown in FIG. 10B, a reflective layer 526 that reflects light from the LED 524 is provided around the LED 524 (the surface of the LED circuit board 522) in the LED display element 520. Is formed.

  For this reason, according to the display panel 500 according to the fifth embodiment, the light emitted from the LED 524 to the back side is reflected by the reflective layer 526 and guided to the light guide unit 542, so that the light utilization efficiency can be further increased. It becomes possible.

  In the display panel 500 according to the fifth embodiment, the coating film 534 includes a translucent hard film, a color-imparting film, and a film having light diffusibility, as in the case of the mobile phone 100 according to the first embodiment. However, it has the structure laminated | stacked in this order so that a translucent hard film may be arrange | positioned at the forefront side.

  For this reason, according to the display panel 500 according to the fifth embodiment, since the film having light diffusibility is provided, an opaque coating film having translucency can be configured. Moreover, since it has a color-imparting film, it is possible to construct coating films of various colors including red, green, and blue. Furthermore, since the translucent hard film is disposed on the foremost side of the coating film 534, the mechanical reliability on the display surface of the display panel 500 can be increased.

[Embodiment 6]
In the sixth embodiment, as in the fifth embodiment, the present invention will be described with reference to an example of a display board that is used by being attached to the upper part of the entrance / exit of the elevator.

FIG. 11 is a view for explaining the display plate 600 according to the sixth embodiment. 11 (a) is a front view of the display panel 600, FIG. 11 (b) is a diagram schematically showing the _A 5 -A ₅ the cross section of FIG. 11 (a), the FIGS. 11 (c) and 11 (D) is a front view which shows the entrance and exit of the elevator 650 when the display board 600 is attached. FIG. 11C is a front view showing the entrance / exit of the elevator 650 during display, and FIG. 11D is a front view showing the entrance / exit of the elevator 650 during non-display.

  As shown in FIGS. 11C and 11D, when the sensor 652 detects that a person has approached the vicinity of the entrance / exit of the elevator 650, the display board 600 according to Embodiment 6 It is configured to display whether the user is on the floor or to display nothing when the sensor 652 detects that there is no person near the entrance of the elevator 650. A display board 600 according to the sixth embodiment is configured similarly to the display board 500 according to the fifth embodiment.

  The display board 600 according to the sixth embodiment has a structure very similar to the display board 300 according to the third embodiment, but the position where the coating film is formed is the case of the display board 300 according to the third embodiment. Is different. That is, in the display panel 600 according to the sixth embodiment, the coating film 634 is disposed on the back side of the transparent substrate 632 as shown in FIG.

  As described above, the display board 600 according to the sixth embodiment is different from the display board 300 according to the third embodiment in the position where the coating film is formed. Similarly, since a predetermined front housing member 630 is disposed on the front surface of the LED display element 620, the mechanical reliability in the display structure is lowered as in the case of the display panel 300 according to the third embodiment. It is possible to solve the first problem of end.

  In the display panel 600 according to the sixth embodiment, a dark color member 640 in which a light guide hole 642 is formed corresponding to the LED 624 is disposed between the front housing member 632 and the LED display element 620. Therefore, for the same reason as in the case of the display panel 300 according to the third embodiment, it is not necessary to increase the light diffusivity of the coating film 634 or to reduce the light transmission rate of the coating film 634. As a result, it is possible to solve the second problem that the visibility is lowered due to blurring and the utilization efficiency of light from the LED 624 is greatly reduced.

  In the display panel 600 according to the sixth embodiment, even if the thickness of the front casing member 630 is increased to some extent in order to increase the mechanical reliability in the display structure, the coating film 634 is formed on the back side of the front casing member 630. Therefore, the light from the LED 624 greatly spreads before reaching the coating film 634, so that the display is not blurred and the visibility is not lowered.

  In the display panel 600 according to the sixth embodiment, the distance from the light guide hole 642 to the coating film 634 can be minimized as long as the mechanical reliability in the display structure is maintained. It is possible to suppress as much as possible that the display spreads and the visibility deteriorates due to the large spread of light before reaching the coating film 634.

  Furthermore, in the display board 600 according to the sixth embodiment, the coating film 634 is formed on the back side of the transparent base material 632, and display is performed on the back side of the transparent base material 632 at the time of display. Will be extremely innovative.

  In the display panel 600 according to the sixth embodiment, as shown in FIG. 11B, the dark color member 640 is disposed over substantially the entire back side of the front housing member 630.

  For this reason, according to the display board 600 according to the sixth embodiment, since the dark color member 640 is disposed over almost the entire back side of the front casing member 630, the portion where the LED display element 620 is disposed and the LED display. In any portion where the element 620 is not disposed, the amount of light emitted from the front surface of the coating film 634 becomes more uniform when not displayed, and further suppresses the awareness of the presence of the display structure when not displayed. Is possible.

  In the display panel 600 according to the sixth embodiment, as the coating film 634, coating films of various colors such as white, gray, black, red, green, and blue can be used.

  In this case, in the case where the coating film 634 is a coating film having a relatively high brightness, the display comes to appear on the coating film 634 having a relatively high brightness only when the LED 624 is turned on. Will be extremely innovative.

  In the display panel 600 according to the sixth embodiment, as shown in FIG. 11B, a reflective layer 626 that reflects light from the LED 624 is provided around the LED 624 (the surface of the LED circuit board 622) in the LED display element 620. Is formed.

  For this reason, according to the display panel 600 according to the sixth embodiment, the light emitted from the LED 624 to the back side is reflected by the reflective layer 626 and guided to the light guide hole 642, so that the light utilization efficiency can be further increased. It becomes possible.

  In the display panel 600 according to the sixth embodiment, the coating film 634 has a structure in which a color imparting film and a film having light diffusibility are laminated.

  For this reason, according to the display board 600 which concerns on Embodiment 6, since it has the film | membrane which has a light diffusibility, it becomes possible to comprise the opaque coating film which has translucency. Moreover, since it has a color imparting film | membrane, it becomes possible to comprise the coating film of various colors. Note that the color-imparting film includes a film that imparts a color composed of white, gray, and black as in the case of the display panel 300 according to the third embodiment. In addition, a transparent substrate having high mechanical reliability and chemical reliability is used as the transparent substrate 632, or a coating having high mechanical reliability and chemical reliability is applied to the front surface side of the transparent substrate 632. Therefore, it is possible to improve the mechanical reliability on the display surface of the display board.

  As mentioned above, although the articles | goods (cell-phone and display board) provided with the display structure of this invention were demonstrated based on said each embodiment, this invention is not limited to each said embodiment, The summary is provided. The present invention can be implemented in various modes without departing from the scope, and for example, the following modifications are possible.

(1) In the cellular phones 100 and 200 according to the first or second embodiment, the example using the 16 segment type LED display element is shown, but the present invention is not limited to this. For example, a 7-segment LED display element or a dot matrix LED display element may be used. Further, various light emitting display elements such as an LD display element, an EL display element, a fluorescent tube display element, and a lamp type display element can be used instead of the LED display element.

(2) In the mobile phones 100 and 200 according to the first or second embodiment, the transparent base material 132 and the low-light-transmitting base material 232 are formed of polycarbonate which is an embodiment of a resin material. It is not limited to this. For example, as long as the material has a desired light transmittance, the transparent base material 132 and the low light-transmitting base material 232 can be made of various materials other than the polycarbonate, for example, an acrylic resin or an ABS resin. Not too long.

(3) In the mobile phone 200 according to the second embodiment or the display panel 400 according to the fourth embodiment, as the low light-transmitting base material, a smoke-colored low light-transmitting base material 232 in which a black pigment is mixed into a transparent resin. , 432, but the present invention is not limited to this. For example, a transparent resin in which a pigment having an appropriate color other than black is mixed or a transparent resin having a low light transmittance can be used as long as the physical properties that promote the attenuation of light are satisfied.

(4) In the mobile phone 200 according to the second embodiment or the display panel 400 according to the fourth embodiment, the gray light guide members 240 and 440 in which the light guide holes 242 and 442 are formed are used as the light guide members. However, the present invention is not limited to this. For example, the dark members 140 and 340 described in the first or third embodiment can be used.

(5) In the first or second embodiment, the present invention has been described by taking the mobile phone 100, 200 as an example, and in any of the third to sixth embodiments, the present invention has been described by taking the display board 300, 400, 500, 600 as an example. However, the present invention is not limited to this. Articles having the display structure of the present invention include, for example, wristwatches, table clocks, portable devices other than mobile phones (for example, portable information devices such as PDA (Personal Data Assistance)), home appliances, office equipment, electronic devices, furniture , Walls, wall components, buildings or vehicles (eg, cars, trains, etc.). When the present invention is applied to an automobile or a train, the display structure as described above can be provided on the inner surface or the outer surface of the automobile or train.

(6) The present invention is not limited to an article provided with the display structure according to each embodiment described above. That is, the present invention does not directly form a coating film on the LED display unit 720 as a light emitting display element as in the case of the wristwatch 700 described in the background art section, but on the front side of the light emitting display element. An article having a display structure that can solve the problem that the mechanical reliability of the display structure is lowered by providing a member and forming a coating film on the front casing member is also provided. Is included. Further, in an article having such a display structure, by providing a light guide part and a non-light guide part on the front housing member, the light use efficiency from the light emitting part becomes a very low value or the visibility is lowered. It also includes an article having a display structure that makes it possible to solve the problem of losing.

1 is a diagram illustrating a mobile phone 100 according to Embodiment 1. FIG. 1 is a diagram illustrating a mobile phone 100 according to Embodiment 1. FIG. 1 is a diagram illustrating a mobile phone 100 according to Embodiment 1. FIG. 1 is an exploded perspective view of a mobile phone 100 according to Embodiment 1. FIG. 1 is a diagram illustrating a mobile phone 100 according to Embodiment 1. FIG. 1 is a diagram illustrating a mobile phone 100 according to Embodiment 1. FIG. It is a figure shown in order to demonstrate the mobile telephone 200 which concerns on Embodiment 2. FIG. It is a figure shown in order to demonstrate the display board 300 which concerns on Embodiment 3. FIG. It is a figure shown in order to demonstrate the display board 400 which concerns on Embodiment 4. FIG. It is a figure shown in order to demonstrate the display board 500 which concerns on Embodiment 5. FIG. It is a figure shown in order to demonstrate the display board 600 which concerns on Embodiment 6. FIG. It is a figure shown in order to demonstrate the wristwatch 700. FIG. It is a figure shown in order to demonstrate the wristwatch 700. FIG. It is a figure shown in order to demonstrate the table clock 800. FIG. It is a figure shown in order to demonstrate the table clock 800. FIG. It is a figure shown in order to demonstrate the mobile telephone 900. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100,900 ... Cell-phone, 102,202,910 ... Display part side member, 104 ... Liquid crystal display part, 106 ... Operation part side member, 108 ... Operation button, 120,220,320,420,520,620,920 ... LED display element, 122, 222, 322, 422, 522, 622, 722, 822, 922 ... LED circuit board, 124, 224, 324, 424, 524, 624, 724, 824, 924 ... LED, 126, 226 326, 426, 526, 626 ... reflective layer, 130, 230, 330, 430, 630 ... front casing member, 132, 332, 632 ... transparent substrate, 134, 134 ', 234, 334, 434, 534, 634 ... Painted film, 134a ... Translucent hard film, 134b ... Color imparting film, 134c ... Light diffusing film, 140, 340 640 ... dark color member, 142, 242, 342, 442, 642 ... light guide hole, 232, 432 ... low translucent substrate, 240, 440 ... light guide member, 300, 400, 500, 600 ... display plate, 350 450, outer wall, 540, dark housing member, 542, light guide, 550, 650, elevator, 552, 652, sensor, 700, wristwatch, 710, watch body, 720, 820, LED display, 726 826, 940 ... opaque member, 728, 828, 942 ... transparent member, 730 ... white coating film, 740 ... band part, 750 ... watch band, 752 ... switch, 754 ... wiring, 800 ... table clock, 810 ... Case, 830 ... Wooden sheet, 930 ... Black jacket

Claims (14)

An article having a display structure that does not make the presence of the display structure non-displaying,
The display structure is
A front case member in which an opaque paint film having translucency is formed on the front side of the transparent substrate;
A light emitting display element disposed on the back side of the front housing member;
A display structure comprising a dark color member disposed between the front housing member and the light emitting display element and having a light guide hole formed corresponding to a light emitting portion of the light emitting display element. Articles provided. An article comprising the display structure according to claim 1,
The article having a display structure, wherein the dark color member is disposed over substantially the entire back side of the front casing member. In an article provided with the display structure according to claim 1 or 2,
An article provided with a display structure, wherein a portion of the front housing member where the dark color member is disposed has a thinner thickness than a peripheral portion thereof. In the article | item provided with the display structure in any one of Claims 1-3,
The article having a display structure, wherein the front housing member is integrated with the dark member. An article having a display structure that does not make the presence of the display structure non-displaying,
The display structure is
A front case member in which an opaque paint film having translucency is formed on the front side of the low translucent substrate;
A light emitting display element disposed on the back side of the front housing member;
A display structure comprising: a light guide member disposed between the front housing member and the light emitting display element and having a light guide hole formed corresponding to a light emitting portion of the light emitting display element. Article with. In an article provided with the display structure according to claim 5,
An article provided with a display structure, wherein a portion of the front housing member where the light guide member is disposed has a smaller thickness than a peripheral portion thereof. In the article provided with the display structure according to claim 5 or 6,
The article having a display structure, wherein the front casing member is integrated with the light guide member. An article having a display structure that does not make the presence of the display structure non-displaying,
The display structure is
A light emitting display element;
All or part of the light guide unit is disposed on the front side of the light emitting display element, a light guide unit is formed corresponding to the light emitting unit of the light emitting display element, and the front side surface is flat. A dark housing member having a structure embedded with a translucent member,
An article having a display structure, wherein an opaque paint film having translucency is formed on a front surface side of the dark housing member. In the article provided with the display structure according to any one of claims 1 to 8,
The coating film has a structure in which a translucent hard film, a color imparting film, and a light diffusing film are laminated so that at least the translucent hard film is disposed on the most front side. An article provided with a display structure. An article having a display structure that does not make the presence of the display structure non-displaying,
The display structure is
A front case member in which an opaque paint film having translucency is formed on the back side of the transparent substrate;
A light emitting display element disposed on the back side of the front housing member;
A display structure comprising a dark color member disposed between the front housing member and the light emitting display element and having a light guide hole formed corresponding to a light emitting portion of the light emitting display element. Articles provided. An article provided with the display structure according to claim 10,
The article having a display structure, wherein the dark color member is disposed over substantially the entire back side of the front casing member. The article provided with the display structure according to claim 10 or 11,
An article having a display structure, wherein the coating film has a structure in which a color-imparting film and a film having light diffusibility are laminated. In the article | item provided with the display structure in any one of Claims 1-12,
An article having a display structure, wherein a reflection layer that reflects light from the light emitting part is formed around the light emitting part in the light emitting display element.   The article provided with the display structure is a watch, a clock, a mobile phone, a portable device, a household appliance, office equipment, an electronic device, furniture, a display board, a wall, a wall component, a building, or a vehicle. An article provided with the display structure according to claim 1.