JP7411033B2 - Display structure - Google Patents

Description

The present invention relates to a display structure that transmits light from a light source for display.

2. Description of the Related Art Conventionally, for example, silicone rubber keypads having a plurality of push buttons have been used in operation units of communication terminals such as mobile phones or PHSs, remote controllers, input keyboards of personal computers, and the like.

A silicone rubber keypad is a molded product made by compression-heat molding and hardening a silicone rubber composition with excellent heat and cold resistance.The push button part has a thin, elastically deformable hollow mesa-like skirt part. and is provided on the base sheet via the skirt portion (for example, see Patent Document 1). In the silicone rubber keypad, when the push button section is pressed by the user, the skirt section buckles and deforms, giving the user a pressing sensation and a clicking sensation.

As a rubber keypad, a so-called illuminated keypad is known, in which a push button portion and a base sheet have optical transparency and are illuminated with light from inside the device.

In an illuminated keypad using a silicone rubber keypad, when the push button is pressed, the fixed contacts placed on the printed circuit board on the back side of the silicone rubber keypad become conductive and perform a switch function. The push button portion is illuminated from below by a light source such as a chip LED placed inside the device housing.

Japanese Patent Application Publication No. 11-115070

However, in the structure of a display device using a conventional silicone rubber keypad, when multiple light-transmitting push buttons are arranged close to each other, the light-transmitting push button is There is a problem in that light leaks to the side of another push button, and light passes through the other push button, making the other push button appear to be emitting light.

The present invention has been made in view of this point, and even when using a silicone rubber keypad having protrusions such as a plurality of push buttons arranged close to each other, light does not pass through the protrusions that are close to each other. It is an object of the present invention to provide a display structure that prevents light from leaking from one side of the light source to the other side.

One aspect of the display structure according to the present invention is
a substrate having multiple light sources;
It has a plurality of light introduction parts provided with concave openings on the back surface side, and is positioned in the light introduction part so as to surround the light source, and is arranged so as to be stacked on the substrate and in contact with the substrate. A light-transmitting base sheet, and a plurality of light-transmitting protrusions provided integrally with the base sheet and protruding from the surface of the base sheet directly above the light introducing section. , a pad in which at least one of the plurality of protrusions transmits light from a corresponding light source and emits light;
a bezel portion arranged to cover the pad;
Equipped with
The bezel portion has a partition wall portion that is provided to protrude downward between the one protrusion portion and the other protrusion portion among the plurality of protrusion portions,
The base sheet has a hole formed between the one protrusion and the other protrusion,
The partition wall portion includes a light shielding portion that is disposed inside the hole and in contact with the substrate, and blocks transmission of light from the light source from the side of the one protrusion to the side of the other protrusion. Adopt the configuration to configure.
One aspect of the display structure according to the present invention is
a substrate having multiple light sources;
It has a plurality of light introduction parts provided with concave openings on the back surface side, and is positioned in the light introduction part so as to surround the light source, and is arranged so as to be stacked on the substrate and in contact with the substrate. A light-transmitting base sheet, and a plurality of light-transmitting protrusions provided integrally with the base sheet and protruding from the surface of the base sheet directly above the light introducing section. , a pad in which at least one of the plurality of protrusions transmits light from a corresponding light source and emits light;
a bezel portion arranged to cover the pad ;
Equipped with
A light shielding portion is provided between the one protrusion and the other protrusion to block transmission of light from the light source from the one protrusion side to the other protrusion side,
The bezel portion is arranged between a window at the top of the plurality of protrusions through which light passes, and between the one protrusion and the other protrusion among the plurality of protrusions on the base sheet. a wall portion;
The light shielding part is
a hole provided in the base sheet and formed between the one protrusion and the other protrusion in the base sheet;
an intervening part provided on the wall and located inside the hole and having no light transmittance;
A configuration with the following is adopted.

According to the present invention, it is possible to prevent light from leaking from one protrusion that transmits light and emits light to the other between adjacent protrusions.

1 is an overall diagram showing a biological information display device having a display structure according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the main part configuration of the operation panel of the biological information display device to which the display structure is applied. FIG. 3 is a view of the operation panel of FIG. 2 viewed from below. FIG. 2 is a perspective view showing the main part configuration of the keypad. FIG. 3 is a perspective view showing the main part configuration of the back surface of the upper housing. FIG. 2 is a cross-sectional view showing the main part configuration of the keypad. FIG. 3 is a plan view of an operation panel showing the main part configuration of a keypad as a first modification. FIG. 8 is a sectional view of an operation panel showing the main part configuration of the keypad shown in FIG. 7; FIG. 3 is a cross-sectional view showing the main part configuration of a keypad as a second modification.

Embodiments of the present invention will be described in detail below with reference to the drawings.
The display structure is applied, for example, to a biological information display device 1 in the medical field as shown in FIG. The biological information display device 1 is an electrocardiogram/phonocardiogram analyzer or the like that collects biological information such as electrocardiograms and phonocardiogram waveforms, and displays and analyzes the electrocardiograms and phonocardiogram waveforms. The display structure of this embodiment is suitable for group medical examinations such as heart examinations and heart sound examinations for school children, and is equipped with a plurality of electrodes and a plurality of heart sound microphones that can be attached to each examinee. The present invention is applied to a biological information display device 1 that serves as an electrocardiograph that can simultaneously acquire biological information. When used as the biological information display device 1, the display structure is not limited to biological information display devices such as an electrocardiogram phonocardiogram analyzer, and can of course be applied to any information processing device as long as it is biological information. It is.

Specifically, the biological information display device 1 includes a device body 2 having an operation panel 100 to which a display structure is applied, and a display screen 4 attached to the device body 2 so as to be openable and closable and displaying collected biological information. 3.

The device main body 2 has a plurality of electrodes and a plurality of heart sound microphones attached to each subject connected to a connection portion (not shown). The apparatus main body 2 is configured such that the biological information of the subject to be inputted into the apparatus main body 2 can be selected and displayed on the display screen 4 of the display unit 3 by operating the keys (particularly the key 24) on the operation panel 100. ,It is configured.

The operation panel 100 is arranged on the upper surface of the apparatus body 2 adjacent to the printer 5. The operation panel 100 is attached to the lower housing 2a together with the printer 5 so as to cover the box-shaped lower housing 2a. The operation panel 100 has a plurality of keys 24 that can be pressed from the top surface of the panel and a protruding display section 26 (26A to 26F).

A display structure according to an embodiment of the present invention has a light transmitting property provided protruding from the surface of a base sheet of a pad (keypad in this embodiment) arranged on a substrate, and It has a plurality of protrusions that transmit light from the light source. In this embodiment, the protruding parts of the display structure correspond to protruding display parts 26 (26A to 26F). Note that in the operation panel 100 of this embodiment, a light-emitting key, which will be described later, among the keys 24 may be a protrusion.

The keys 24 are for operating the biological information display device, and include a first switching key 24A, a second switching key 24B, a start/stop key 24C, which are luminescent keys that emit light when pressed, and an illuminated key ( 24D to 24G).

The light-emitting keys (24A to 24C) are keys whose key tops emit light when pressed.
The first switching key 24A switches and displays biological information from electrodes attached to each of a plurality of subjects for each subject. Specifically, the first switching key 24A switches the biological information of the first subject from the first electrode (not shown) connected to the device main body 2 and the second electrode (not shown) connected to the device main body 2. This is an operation key for switching between the biological information of the second subject (not shown) and displaying it on the display screen 4 of the display unit 3.
The first switching key 24A includes a key 240A corresponding to the first electrode and a key 240B corresponding to the second electrode. When any of these keys 240A and 240B is pressed, the pressed key itself emits light, and the display target on the display screen 4 is switched to the subject's biological information corresponding to the pressed key. .

The second switching key 24B switches and displays different types of biological information of the subject selected and displayed by the first switching key 24A.
The second switching key 24B is, for example, an operation key for switching the measurement target between an electrocardiogram and a phonocardiogram, and includes a key 240C corresponding to an electrocardiogram and a key 240D corresponding to a phonocardiogram. When either of the keys 240C and 240D is pressed, the key itself emits light, and the display screen 4 is switched to display the measurement target corresponding to the pressed key. For example, when the key 240C is pressed, the electrocardiogram of the subject corresponding to the key (either key 240A or 240B) pressed by the first switching key 24A is displayed on the display screen 4. Further, when the key 240D is pressed, the phonocardiogram of the subject corresponding to the key (either key 240A or 240B) pressed by the first switching key 24A is displayed on the display screen 4.

The start/stop key 24C is an operation key for starting/stopping recording of biological information. Note that the start/stop key 24C is pressed once by the user after confirming that the displayed biometric information is in a stable state (resting state), and recording of the biometric information (for example, printing by the printer 5) is started. After biometric information has been recorded for a period of time (generally about 5 to 10 seconds), the user presses the button again, thereby stopping the recording.

The illumination keys (24D to 24G) are keys that, when pressed, cause the corresponding protruding display portions 26 (26A to 26F) to emit light. The illuminated keys (24D to 24G) are arranged near the respective corresponding protruding display sections 26 (26A to 26F). When pressed by the operator, the illumination keys (24D to 24G) illuminate the protruding display sections 26 (26A to 26F) disposed in their respective vicinity with the light emitters 40 to cause them to emit light (specifically, to enter a light emitting state). . A specific projecting display section 26 (26A to 26F) lights up to indicate that an illuminated key (24D to 24G) arranged in the vicinity of the specific projecting display section has been pressed.

In this embodiment, the illumination keys (24D to 24G) that illuminate the protruding display sections 26A to 26F are the guide keys 24D and 24E, the STD key 24F, and the spare key 24G. The guidance keys 24D and 24E are keys for switching guidance displayed on the display screen 4. When the guidance keys 24D, 24E are pressed, the protruding display parts 26A to 26D emit light to indicate the guidance displayed on the display screen 4. The guides displayed on the protruding display sections 26A to 26D are, for example, "I-III", "aVR-aVF", "V1-V3", and "V4-V6", and these are indicated by pressing the guide keys 24D and 24E. By pressing, you can switch sequentially. In this embodiment, the guidance keys are a guidance key 24D indicating "←" and a guidance key 24E indicating "→". When the guidance keys 24D and 24E are pressed, protrusions that respectively indicate the guidance of "I-III", "aVR-aVF", "V1-V3", and "V4-V6" are displayed according to the direction of the arrow displayed on the keys. The display sections 26A to 26D sequentially emit light. In addition to changing the light emission of these protruding display sections 26A to 26D, the guidance displayed on the display screen 4 is also changed. The STD key 24F is a key for displaying a baseline (for example, a line connecting the beginning of a P wave to the beginning of the next) on the guidance displayed on the display screen 4 on the protruding display sections 26A to 26D. When the STD key 24F is pressed, the protruding display section 26E emits light and the baseline is displayed on the display screen 4. The spare key 24G is a key for switching to the set spare guidance, and when pressed, the spare guidance is displayed on the display screen 4 and the protrusion corresponding to the spare key 24G lights up. As described above, in the biological information display device 1 of this embodiment to which the display structure is applied, the protruding display portions 26A of the guidance keys 24D, 24E, the STD key 24F, and the spare key 24G of the operation panel 100 are adjusted according to the selected guidance. ~26F lights up appropriately.

[Main configuration of operation panel 100]
FIG. 2 is an exploded perspective view showing the main part configuration of the operation panel 100 of the biological information display device 1 to which the display structure is applied, and FIG. 3 is a view of the operation panel 100 shown in FIG. 2 viewed from below. Further, FIG. 4 is a perspective view showing the main part configuration of the keypad 20, and FIG. 5 is a perspective view showing the main part structure of the back surface of the upper housing 30.

As shown in FIGS. 2 and 3, the operation panel 100 includes a substrate 10, a light emitting body 40 mounted on the substrate 10, a keypad 20, a pattern sheet 50, and an upper casing as a bezel portion that serves as the main body of the operation panel 100. 30, a top sheet 60, and a power switch section 70.

In the operation panel 100, a keypad 20 is arranged on the main surface of the substrate 10. As shown in FIGS. 2 to 4, the key covers 52 of the pattern sheet 50 are placed over the key tops 241 of the keys 24 of the keypad 20. The key 24 with the key cover and the protruding display part 26 are inserted into respective window holes 33 formed in the upper housing 30 in the same arrangement as the key top 241 and the protruding display part 26. These board 10, keypad 20, and pattern sheet 50 are stacked in order within the lower casing 2a of the device main body 2, and are arranged between the lower casing 2a and the upper casing 30.

The circuit board 10 has a circuit 42 which is made conductive by pressing each key 24 of the operation panel 100, and which causes the corresponding light emitter 40 to emit light by pressing the light emitting keys (24A to 24C) and the illumination keys (24D to 24G). has.

For example, a predetermined printed electric circuit (including the circuit 42) is formed on the main surface of the substrate 10. In this electric circuit, a light emitter 40 is mounted. That is, the substrate 10 is a mounting portion of the light emitter 40, and the main surface of the substrate 10 is the mounting surface of the light emitter 40.

The light emitter 40 is a light source, for example, an LED. The light-emitting body 40 may be configured in any manner as long as it emits light to illuminate the light-emitting key and the protruding display portion 26 to be in a light-emitting state.
In this embodiment, the light-emitting body 40 is used for the light-emitting keys (24A to 24C) of the keys 24 of the keypad 20 stacked in contact with the substrate 10, and the protruding display portion 26 (26A) in the electric circuit of the substrate 10. ~26F) etc. is mounted at the position corresponding to the array. Note that the light emitting body 40 does not need to be directly mounted on the substrate 10.

The upper housing 30 has a plurality of window holes 33 in a planar surface portion 32 provided so as to cover the substrate 10 at positions corresponding to the arrangement of the keys 24 and the protruding display portions 26.
Of the window holes 33, the window holes 33 into which the key tops 241 of the luminous keys and the top portions 261 of the protruding display portions 26 are inserted are windows through which the light from the key tops 241 of the luminous keys and the top portions 261 of the protruding display portions 26 pass through, respectively. The key top 241 of the luminescent key and the top portion 261 of the protruding display portion 26 do not need to be inserted. For example, a transparent member may be arranged in a window hole formed in the surface portion 32, and the light from the key top 241 of the light-emitting key and the top portion 261 of the protruding display portion 26 may be passed through the transparent member to the outside. good. Note that a plurality of holes are provided on the surface of the surface portion 32 of the upper housing 30 at positions corresponding to the arrangement of the keys 24 and the protruding display portions 26, and printing for displaying each key is provided around the holes. A top sheet 60 is attached.

The upper housing 30 is provided with a rib-shaped partition wall 34 projecting downward on the back surface of the front surface 32 so as to surround at least a window hole 33 into which the protruding display section 26 is inserted (see FIGS. 3 and 3). (See Figure 5).

The partition wall section 34 is disposed in a space between the base sheet 22 and the surface section 32 of the upper housing 30, and partitions the space into spaces 36A and 36B that accommodate adjacent protruding display sections 26, respectively (FIG. 3, (See Figure 5). The partition wall portion 34 constitutes a part of a wall portion 340 that is provided to protrude from the back surface of the front surface portion 32 . The wall portion 340 is arranged in the space between the base sheet 22 and the surface portion 32 of the upper housing 30. It is desirable that the lower end of the wall portion 340 abuts the surface of the base sheet 22. The wall portion 340 is arranged to surround each of the light-emitting keys together with each of the protruding display portions 26.

Note that in this embodiment, the surface portion 32 of the upper housing 30 is reinforced by the wall portion 340 including the partition wall portion 34, and the strength of the upper housing 30 itself is improved.

The keypad 20 shown in FIGS. 2 to 4 has light transmittance, and transmits light from the light emitters 40 facing each other on one surface (here, the back surface). In this embodiment, the keypad 20 is made of a flexible, insulating rubber-like elastic material such as natural rubber, various synthetic rubbers, thermoplastic elastomer, etc., and is manufactured by compression molding, injection molding, etc. It is a rubber-like elastic body manufactured by processing in various ways. The rubber-like elastic material used for the keypad 20 is, for example, silicone rubber that has properties required for contact key switches, such as electrical insulation, cold resistance, heat resistance, chemical resistance, precision moldability, and rebound resilience. It is preferable that

The keypad 20 includes a base sheet 22 that is a light-transmissive rubber-like elastic body, a plurality of keys 24 and a protruding display section 26 provided to protrude from the base sheet 22, and a slit 27 formed in the base sheet 22. have

In this embodiment, the key 24 and the protruding display section 26 are a light-transmissive rubber-like elastic body made of the same material as the base sheet 22, and are molded integrally with the base sheet 22. In the present embodiment, the keypad 20 includes the base sheet 22, the keys 24, and the protruding display section 26, but the keypad 20 is not limited to this. Alternatively, at least one of the keys 24 and the protruding display section 26 may be made of a resin having light transmittance.

Base sheet 22 is arranged on the main surface of substrate 10, and in this embodiment, is arranged in an overlapping manner so as to cover the entire main surface of substrate 10.

The base sheet 22 is formed with a concave opening on the substrate 10 side corresponding to the light emitting body 40 of the substrate 10, and has a light introduction part 28 (see FIGS. 3 and 6) arranged so as to surround the light emitting body 40. have The light introduction section 28 is provided on the back side of the base sheet 22 below (in this case, directly below) the protruding display section 26 that protrudes from the front surface of the base sheet 22. The light emitting body 40 in the light introducing section 28 emits light when the illumination keys 24D to 24G disposed near the protruding display section 26 directly above are pressed. When the light emitting body 40 in the light introducing section 28 emits light, the protruding display section 26 (26A to 26F) is illuminated via the light introducing section 28.

An opening is formed on the back side of the base sheet 22 where the keys 24 are arranged, and a skirt portion 243 of the key 24 and a key body 242 are provided to close this opening (FIGS. 2 and 3). reference).

The keys 24 including the light-emitting keys (24A to 24C) and the light-emitting keys (24D to 24G) are provided at a key body 242 having a key top 241 exposed upward from a window hole 33, and at the base end of the key body 242, respectively. It has a thin skirt portion 243. The skirt portion 243 has a hollow mesa shape that is elastically deformed, and elastically deforms to move the key 24 itself forward and backward toward the board. Furthermore, a conductive portion 245 is provided on the bottom surface of the key body 242 within the skirt portion 243 to connect the fixed contacts of the board 10 to each other.

In the key 24, when the key top 241 is pressed, the key body 242 moves toward the board 10 while elastically deforming the skirt part 243, and the conductive part 245 connects the fixed contacts of the circuit 42 on the board 10. and make the fixed contact part conductive.

Among the keys 24, the light-emitting keys (24A to 24C) have a light-emitting body 40 disposed inside the skirt portion, and when the key body 242 is pressed from above, the skirt portion 243 deforms, and the conductive portion 245 connects the fixed contacts of the board 10 and causes the light emitter 40 to emit light. As a result, the key body 242 transmits light, and the key top 241 of the light-emitting key lights up.

A plurality of protruding display portions 26 (26A to 26D) are arranged close to or adjacent to each other on the base sheet 22.

FIG. 6 is a schematic cross-sectional view showing the main part configuration of the keypad 20, and FIG. 6 shows protruding display parts 26A and 26B arranged adjacent to each other.

Since the protruding display parts 26A to 26F as protruding parts have the same configuration, the structure of the protruding display part 26A as a protruding part will be described, and the description of the other protruding display parts 26B to 26F will be omitted.

The protruding display portion 26A has a top portion 261 exposed upward from the window hole 33, and a protrusion display portion main body 262 that transmits light and guides light from the base sheet 22 to the top portion 261.

The protruding display section main body 262 is arranged directly above the light introduction section 28 of the base sheet 22. The protruding display main body 262 transmits the light from the light emitting body 40 in the light introduction part 28 through the light introduction part 28 and guides the light to the top part 261 .

The light emitters 40 (40A, 40B) in the light introduction section 28 emit light when the guide key 24D is pressed. Therefore, in response to the depression of the guide key 24D, the light emitting body 40A emits light, so that the top part 261 of the protruding display part 26A lights up, and the light emitter 40B emits light, so that the top part 261 of the protruding display part 26B lights up.

The slit 27 prevents the light from the light emitter 40, which is the light source of one protruding display part (for example, 26A), from passing through to the other protruding display part (for example, 26B) in the adjacent protruding display parts 26. In other words, it is provided to block light leakage from one side to the other side.
In this embodiment, the slit 27 is formed between one protrusion, which is one protruding display part, and another protrusion, which is the other protruding display part, together with a light shielding member 38 that does not have light transmittance. This constitutes a light shielding portion that blocks transmission of light from the light emitting body 40 from one protrusion side to another protrusion side. Note that the light shielding part is a part of the base sheet 22 as long as it blocks the transmission of the light of the light emitting body 40 that is a light source from the side of one protrusion to the side of the other protrusion, which transmits the light of the light emitting body 40 and emits light. may be provided in any manner. Blocking the passage of light by the light shielding portion desirably means completely eliminating the transmission of light, but may also include attenuating the amount of light transmission to the extent that it is difficult to see. That is, the light shielding part not only blocks light to prevent light leakage, but also has the function of making it difficult for light to leak from one protrusion side to the other protrusion side.

The slit 27 is formed in the base sheet 22 between the adjacent protruding display parts 26A, 26B so as to interrupt the continuity of the adjacent protruding display parts 26A, 26B at the shortest distance. The slit 27 may be formed in any shape as long as it is provided so as to block light transmission (light leakage) from one side of the adjacent protruding display sections 26 to the other. In the present embodiment, the slit 27 is formed in the shape of an elongated hole that penetrates the base sheet 22 and extends in a direction perpendicular to the direction in which the protruding display parts 26A and 26B are lined up. However, the slit 27 is not limited to this. For example, it may be a hole or a notch formed in a shape other than a rectangle, such as a curved shape. In short, the holes or cutouts such as the slits 27 may be provided in the base sheet 22 so as to cut off the linear light transmission path connecting the protruding display parts 26A and 26B over the shortest distance. If the keypad 20 is translucent, the light transmission path of the shortest distance in the base sheet 22 is cut off, so that a certain degree of light reduction effect can be achieved. Furthermore, by providing holes or cutouts such as the slits 27, it is possible to secure a space in the base sheet 22 for arranging the light shielding member 38 that does not have light transmittance.

In this embodiment, a light shielding member 38 as an intervening portion is fitted into the slit 27 . The light shielding member 38 does not have light transmittance, and since it is disposed in the slit 27 and is interposed between the pair of adjacent protruding display parts 26, the light shielding member 38 does not have light transmittance. It is possible to reliably block light leaking from one side to the other in between.

In this embodiment, as shown in FIGS. 3, 5, and 6, the light shielding member 38 connects the substrate 10 to the tip of the partition wall 34 that protrudes from the back side of the front surface 32 of the upper housing 30. It is formed to protrude from the side. As a result, the partition wall portion 34 that fits inside the slit 27 and forms the light shielding portion 38 extends so as to come into contact with the substrate 10 .
In this embodiment, the light shielding member 38 is integrally molded with the partition wall 34, that is, is integrally molded with the upper housing 30 having the partition wall 34.

A light shielding member 38 at the tip of the partition wall portion 34 is fitted into the slit 27 and is in contact with the main surface of the substrate 10 (see FIG. 6). Thereby, the light shielding member 38 completely closes the slit 27, and the main surface of the substrate 10 and the space on the front surface side of the keypad 20 are completely partitioned off. Therefore, the light shielding member 38, together with the partition wall 34, can prevent light from leaking from one of the protruding display parts 26A and 26B arranged with the slit 27 in between, and can also prevent water from entering the keypad 20 from the outside. Even when it is exposed to water, it does not reach the substrate 10, thereby improving waterproofness.

In addition, the pattern sheet 50 displays a pattern including characters indicating the functions of the keys 24, etc. The pattern sheet 50 is composed of a plurality of key covers 52 that are arranged corresponding to the arrangement of the keys 24 and cover the key tops 241 of the respective keys 24, and a runner part 54 that connects these key covers 52. Since the plurality of key covers 52 are integrally provided via the runner portion 54, when assembling the operation panel 100, the key tops 241 of the keys 24 of the keypad 20 can be easily covered at one time. It is preferable that the pattern sheet 50 has a thin wall thickness, and is made of, for example, a sheet-shaped PC (polycarbonate). Since the pattern sheet 50 is provided so as to cover the key 24 from the front side, it can prevent water from entering into the interior from the upper housing 30 side, thereby further enhancing the waterproofness of the board 10.

[Effects due to display structure on operation panel 100]
As described above, in this embodiment, the keypad 20 is arranged on the surface of the substrate 10 on which the light emitting body 40, which is a light source, is provided on the main surface. The keypad 20 includes a light-transmitting base sheet 22 disposed on the main surface of the substrate, and a plurality of light-transmitting protruding display sections 26 provided protruding from the base sheet 22. At least one of the protruding display sections 26 (26A to 26D, etc.) transmits light from the light emitter 40 directly below. The upper housing 30, which is a bezel portion, is arranged to cover the keypad 20, and has window holes 33 into which the top portions 261, which are the tips of the plurality of protruding display portions 26, are inserted and face the outside of the operation panel 100.

The upper housing 30 has a partition wall 34 disposed on the base sheet 22 and between the plurality of protruding display parts 26A and 26B. A slit 27 is formed in the slit 27, and a light shielding member 38 is inserted and fitted into the slit 27 to block transmission of light from one of the plurality of protruding display parts 26A, 26B to the other.

As a result, even if one of the adjacent projecting display sections 26 (for example, the projecting display section 26A) transmits the light from the light emitting body 40 that is the light source and shines at the top 261, it does not emit light. Light does not leak to the other protruding surface portion (for example, protruding surface portion 26B) side, and lighting can be performed suitably.
In this manner, according to the present embodiment, it is possible to prevent light from leaking from one projecting display section 26 (for example, 26A, 26B) that transmits light and emits light to the other.

Furthermore, in the present embodiment, the light shielding member 38 is provided to protrude from the lower end of the partition wall portion 34, so that the light shielding member 38 can be inserted into the slit 27 at the same time as the upper housing 30 is assembled. This makes it possible to improve assembly work efficiency.

Since the board 10 and the upper casing 30 are completely isolated by the keypad 20 on the board 10, water cannot enter the inside of the device body 2 through the window hole 33 of the upper casing 30 and reach the board 10. Therefore, the water resistance of the biological information display device 1, and by extension, the waterproofness can be ensured.

Note that the key tops 241 are each covered from the window hole 33 of the upper housing 30 via the key cover 52 of the pattern sheet 50, which further prevents water from penetrating inside. Furthermore, the outer periphery of the keypad 20 is provided with a peripheral wall portion that protrudes from the front surface side. This prevents water from reaching the substrate 10 from the outer periphery of the keypad 20 even if water enters the front surface of the keypad 20.

Further, in the present embodiment, in the keypad 20, the protruding display parts 26A and 26B on the base sheet 22 are arranged in the slit 27 of the base sheet 22 in the upper housing 30, regardless of the length of the interval between them. By inserting the light shielding member 38B at the lower end of the partition wall portion 34B, leakage of light from each other is blocked.

For example, a display operation panel 100B shown in FIGS. 7 and 8 is used in place of the operation panel 100 of a biological information display device, and includes a keypad 20B having a plurality of protruding display sections 26H with shortened intervals. , and a bezel portion 30B in which a window hole 33B is provided on the surface portion 32B, through which the top portions 261 of the plurality of protruding display portions 26H are respectively exposed. In FIGS. 7 and 8, components having the same functions as the configuration of the operation panel 100 are given the same reference numerals as the names on the operation panel 100, or a B is added to the same reference numerals, and a description thereof will be omitted. .

In the operation panel 100B, a slit 27B is formed in the base sheet 22B of the keypad 20B between the protruding display portions 26H that protrude from the surface of the base sheet 22B. Thereby, among the protruding display parts 26H arranged at short intervals, it is possible to suitably transmit light from one protruding display part 26H without transmitting light to the other protruding display part 26H. Since the protruding display portions 26H can be arranged closely spaced in this way, it can be applied to a display device that displays a large amount of information by emitting light. Further, a plurality of protruding display portions can be arranged in a matrix while preventing light leakage from each other.

Further, in this embodiment, the partition wall portion 34 is provided with a light shielding member 38 that is inserted into and fitted into the slit 27, but the light shielding member 38 is not limited to this. The base sheet 22 below the protruding display parts 26A to 26F may be configured in any manner as long as it blocks transmission of light between the protruding display parts 26A to 26F. For example, as shown in FIG. 9, an operation panel 100C may be configured in which the substrate 10 is a substrate 10C on which components 80 are mounted on the back side.

In this case, a through hole 15 that is continuous with the slit 27 is provided in the substrate 10C, and a light shielding member 38C that protrudes from the bottom surface of the component 80 to be mounted is provided on the back side of the substrate 10C. In modification example 2 shown in FIG. 9, a light shielding portion 38C that is formed to protrude from the substrate 10C side extends so as to come into contact with a partition wall portion 34C that protrudes from the back surface of the front surface portion 32C in the upper housing 30A.

According to this configuration, it has the same effect as the operation panel 100 described above, and in assembling the operation panel 100C, after mounting the component 80 on the board 10C, when placing the keypad 20 on the front side of the board 10C, By fitting the slit 27 into the light shielding member 38C protruding from the surface of the substrate 10C, the keypad 20 can be easily positioned and arranged.

The light shielding portion 38C protruding from the substrate 10C side closes the slit 27 and extends so as to come into contact with the partition wall 34C. The space can be partitioned watertightly. Therefore, between the protruding display parts 26A and 26B that are close to each other, it is possible to prevent light from leaking from one side that transmits light and emits light to the other, and also prevents water from penetrating into the substrate 10C from the surface part 32C side of the upper housing 30A. It is possible to improve waterproofness.

In this embodiment, in the operation panel 100, the slit 27 of the base sheet 22 is provided between the protruding display parts 26A to 26D, but the slit 27 is not limited thereto, and may be provided between the light emitting keys. For example, as shown by the imaginary line 27A in FIGS. 2 and 3, a slit is provided between the keys 241 and 242 of the first switching key 24A, and a slit is provided between the keys 241 and 242 of the first switching key 24A. A configuration may also be adopted in which a light shielding member provided at the lower end of the partition wall of the casing 30 is inserted. This makes it possible to prevent light from leaking between adjacent light-emitting keys.

Further, in the present embodiment, the light shielding members 38, 38B, and 38C as a shielding part that constitute a light shielding part together with the slit 27 as a hole are part of the partition wall parts 34, 34B or the component 80. However, the base sheet 22 may be formed of a coating film having a light-shielding property, and may be provided on the circumferential surface of the base sheet 22 where the holes are formed.

The embodiments of the present invention have been described above. Note that the above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. That is, the description of the configuration of the device and the shape of each part is merely an example, and it is clear that various changes and additions can be made to these examples within the scope of the present invention.

The display structure according to the present invention is useful for preventing light leakage to adjacent push buttons in a display device equipped with a silicone rubber keypad having protrusions such as a plurality of push buttons arranged in close proximity. .

1 Biological information display device 2 Device body 3 Display section 4 Display screen 5 Printer 10, 10B, 10C Board (mounting section)
15 Through hole 20, 20B Keypad 22, 22B Base sheet 24, 240A, 240B, 240C, 240D Key 241 Key top 242 Key body 243 Skirt portion 245 Conductive portion 26, 26A, 26B, 26C, 26D, 26E, 26F, 26H Protruding display part (protruding part)
261 Top 262 Protruding display body 27, 27A, 27B Slit (hole)
28 Light introduction part 2a Lower housing 30, 30A Upper housing (bezel part)
30B Bezel part 32, 32B, 32C Surface part 33, 33B Window hole (window)
34, 34B, 34C Partition wall (wall)
38, 38B, 38C Light shielding member (intervening part)
40, 40A, 40B Luminous body (light source)
42 Circuit 50 Design sheet 52 Key cover 54 Runner section 80 Parts 60 Surface sheet 70 Power switch section 100, 100B, 100C Operation panel

Claims (3)

a substrate having multiple light sources;
It has a plurality of light introduction parts provided with concave openings on the back surface side, and is positioned in the light introduction part so as to surround the light source, and is arranged so as to be stacked on the substrate and in contact with the substrate. A light-transmitting base sheet, and a plurality of light-transmitting protrusions provided integrally with the base sheet and protruding from the surface of the base sheet directly above the light introducing section. , a pad in which at least one of the plurality of protrusions transmits light from a corresponding light source and emits light;
a bezel portion arranged to cover the pad;
Equipped with
The bezel portion has a partition wall portion that is provided to protrude downward between the one protrusion portion and the other protrusion portion among the plurality of protrusion portions,
The base sheet has a hole formed between the one protrusion and the other protrusion,
The partition wall portion is disposed to fit inside the hole and abut against the substrate, and constitutes a light shielding portion that blocks transmission of light from the light source from the one protrusion side to the other protrusion side. do,
A display structure characterized by : a substrate having multiple light sources;
It has a plurality of light introduction parts provided with concave openings on the back surface side, and is positioned in the light introduction part so as to surround the light source, and is arranged so as to be stacked on the substrate and in contact with the substrate. A light-transmitting base sheet, and a plurality of light-transmitting protrusions provided integrally with the base sheet and protruding from the surface of the base sheet directly above the light introducing section. , a pad in which at least one of the plurality of protrusions transmits light from a corresponding light source and emits light;
a bezel portion arranged to cover the pad ;
Equipped with
A light shielding portion is provided between the one protrusion and the other protrusion to block transmission of light from the light source from the one protrusion side to the other protrusion side,
The bezel portion is arranged between a window at the top of the plurality of protrusions through which light passes, and between the one protrusion and the other protrusion among the plurality of protrusions on the base sheet. a wall portion;
The light shielding part is
a hole provided in the base sheet and formed between the one protrusion and the other protrusion in the base sheet;
an intervening part provided on the wall and located inside the hole and having no light transmittance;
has,
A display structure characterized by: The surface of the bezel portion and the surface of the top portion within the window are flush with each other,
The display structure according to claim 2 , characterized in that:

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