JP2017084741A - Touch type input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch type input device which has been reduced in thickness and achieves improvement of sensibility of a touch sensor.SOLUTION: A touch sensor part 5 capable of sensing operation to a surface panel 3 is installed between the surface panel 3 and a circuit board 4. The touch sensor part 5 is provided on a front surface side of the circuit board 4, and light sources 21, 22 are arranged on a rear surface side of the circuit board 4. A hole part 23 which directs light coming from the light sources 21, 22 toward the surface panel 3 is provided on the circuit board 4.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a touch input device.

  For example, a vehicle such as an automobile is provided with an air-conditioner operation unit or the like in the vehicle interior. Then, it has been studied to use such an operation unit as a touch input device.

  Such a touch-type input device is such that a sheet-like touch sensor is directly attached to the back surface of the front panel (of the operation unit) (see, for example, Patent Document 1). On the back side of the front panel, the circuit board is installed in a state of being separated (from the front panel).

  The front panel is a filter unit so as to function as a display device. Then, light from a plurality of light sources such as LEDs mounted on the surface side of the circuit board is guided to the filter part via the guide lights, respectively, so that each part of the filter part can be illuminated.

JP 2012-150305 A

  The touch input device of Patent Document 1 has a structure in which a circuit board, a light source, a guide light, a touch sensor, and a front panel (filter unit) are sequentially arranged from the back side to the front side. There was a problem that the thickness would increase.

  In addition, since the sheet-like touch sensor is directly attached to the back side of the front panel, it is necessary to make the back side of the front panel flat. In addition, there are problems such as that it takes time to attach the sheet-like touch sensor to the back surface of the front panel, and that the product yield is reduced due to poor attachment of the sheet-like touch sensor.

  Accordingly, the main object of the present invention is to solve the above-described problems.

In order to solve the above problems, the present invention provides:
In the touch input device in which a touch sensor unit capable of sensing an operation on the front panel is installed between the front panel and the circuit board,
The touch sensor unit is provided on the surface side of the circuit board,
A light source is arranged on the back side of the circuit board,
The circuit board is provided with a hole through which light from the light source is directed toward the front panel.

  According to the present invention, the touch input device can be thinned and the sensitivity of the touch sensor unit can be improved by the above configuration.

1 is an overall perspective view of a touch input device according to an embodiment. FIG. 2 is an exploded perspective view of FIG. 1. It is sectional drawing along the AA line of FIG. It is sectional drawing which shows schematic structure of the touch-type input device of FIG. It is a top view of the circuit board by which the touch sensor part was installed in the surface side. It is the fragmentary perspective view (up-and-down reverse view) which looked at the light guide from the back side. It is sectional drawing of a surface panel. It is sectional drawing similar to FIG. 4 which shows schematic structure of the touch-type input device concerning a comparative example.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 8 are for explaining this embodiment.

  <Configuration> The configuration of this embodiment will be described below.

  For example, in an interior of a vehicle such as an automobile, an air conditioner operation unit 1 (air conditioning controller) or the like as shown in FIG. 1 is installed at the center of the instrument panel in the vehicle width direction. Then, the operation unit 1 is a touch input device 2 that can be operated simply by touching it with a finger or bringing a finger close to it.

  As shown in the exploded perspective view of FIG. 2, the specific cross-sectional view of FIG. 3, the schematic cross-sectional view of FIG. 4, etc. (mainly refer to FIG. 4), the touch-type input device 2 includes a front panel 3 and a circuit board. 4, a touch sensor unit 5 that can sense an operation on the front panel 3 is installed.

  Here, the front panel 3 is a panel member constituting the surface design of the operation unit 1. In this case, for example, as shown in FIG. 1, the front panel 3 includes a pair of operation areas 11 and 12 that are circular on both left and right sides, and between the left and right operation areas 11 and 12. A resin panel having an oblong shape in a front view provided with a linear operation region 13 extending in the lateral direction at a lower position is used.

  Among them, the right circular operation area 11 is provided with an air conditioner mode changeover switch (switch 14a) at the center. An air volume up switch (switch 14b) and an air volume down switch (switch 14c) are provided above and below the air conditioner mode switch (switch 14a), respectively. Further, an air volume setting switch (switch 14d) is provided beside (right side) the air conditioner mode switching switch (switch 14a).

  Similarly, the left circular operation area 12 is provided with an auto mode changeover switch (switch 14e) at the center. A temperature up switch (switch 14f) and a temperature down switch (switch 14g) are provided above and below the auto mode changeover switch (switch 14e), respectively. Further, a temperature setting switch (switch 14h) is provided on the side (left side) of the auto mode switch (switch 14e).

  Further, in the lower linear operation area 13, in order from the left side, an air conditioner power switch (switch 14i), a front window fogging prevention switch (switch 14j), a blowing mode changeover switch (switch 14k), a rear switch A window fog prevention switch (switch 14l), an inside / outside air changeover switch (switch 14m), and the like are provided.

  These switches 14a to 14m are not mechanical switches (that is, mechanical switches) but touch switches. Note that the types and arrangement of the switches 14a to 14m described above are merely examples, and it is not always necessary to do so.

  Further, a liquid crystal display panel 15 is provided at an upper position between the left and right operation areas 11 and 12. The display panel 15 can display the operation status of the switches 14a to 14m and the like. As shown in the exploded perspective view of FIG. 2, the display panel 15 includes a display panel body 15a, a circuit board 15b, a mounting base 15c, and a display panel body 15a disposed on the back side of the window 3a provided on the front panel 3. It has. In order to avoid interference with the display panel 15, the circuit board 4 is provided with a notch 4 a at the position of the display panel 15.

  Further, a transparent protective cover 16 for protecting the display panel 15 is attached to the surface side of the window 3 a of the front panel 3.

  A housing 17 is installed on the back side of the circuit board 4 and the display panel 15, and the front side is covered with the front panel 3. On the surface side of the housing 17, ribs 17 a having a horizontally long oval shape for accommodating the circuit board 4 and the display panel 15 are provided so as to project, and the surface panel 3 is provided with ribs on the outer periphery thereof. It has a flange-like peripheral wall portion fitted (externally fitted) to 17a.

  Then, the circuit board 4 and the front panel 3 are respectively fixed to the housing 17 by fixing means such as claw fixing and screw fixing. For example, as shown in the cross-sectional view of FIG. 3, the circuit board 4 is positioned with respect to the front panel 3 by inserting positioning pins 3b into the positioning holes 4b. Further, the protective cover 16 is locked and held with respect to the front panel 3 (peripheral edge portion thereof), for example, by fitting the claw portion 16c into the claw hole 3c. In addition, about the fixing structure of each part, it does not necessarily restrict to the above.

  In contrast to the above-described configuration, this embodiment has the following configuration.

(1) Arrangement of Touch Sensor Unit 5 and Light Source 21 As shown in FIG. 4, the touch sensor unit 5 is provided on the surface side of the circuit board 4.
The light sources 21 and 22 are arranged on the back side of the circuit board 4.
The circuit board 4 is provided with a hole 23 through which light from the light sources 21 and 22 is directed toward the front panel 3.

  Here, as shown in FIG. 5, the touch sensor unit 5 is directly provided as a sensor pattern on the surface of the circuit board 4. In this case, the touch sensor unit 5 generates a magnetic field between the electrode (sensing part) provided in the part 25 to be the switches 14a to 14m and the electrode provided to the part 26 other than the switches 14a to 14m. It is supposed to be an electrostatic type etc. Then, the touch sensor unit 5 can detect an operation on the switches 14a to 14m by changing the capacitance by bringing the finger close to the portion 25 of the switches 14a to 14m and blocking the magnetic field described above. ing. The touch sensor unit 5 can be made using circuit manufacturing technology.

  For the light sources 21 and 22, for example, LEDs are used. The hole 23 is a light passage hole that passes between the front and back surfaces of the circuit board 4. Further, in this embodiment, the hole portion 23 is a light source insertion hole portion having a size capable of inserting the light emitting portion 27 of the light sources 21 and 22 such as LEDs. The light sources 21 and 22 have the light emitting portion 27 directed toward the surface side of the circuit board 4 and the light emitting portion 27 does not protrude from the surface of the circuit board 4 so that the light sources 27 and 22 are in the hole portion 23 or in the hole portion 23. Arranged to face. Further, the light sources 21 and 22 are electrically connected to a circuit pattern or the like whose electrode portion 28 is formed on the back side of the circuit board 4. The light sources 21 and 22, the electrode portions 28 of the light sources 21 and 22, and the like are installed at positions on the back side of the circuit board 4 that do not affect the touch sensor unit 5. Furthermore, other circuit components are mounted on the circuit pattern formed on the back side of the circuit board 4.

(2) About the light guides 33 and 34 As shown in FIGS. 2 to 4 (mainly refer to FIG. 4), the above-mentioned hole part 23 is passed between the circuit board 4 and the surface panel 3. Light guides 33 and 34 for guiding the light from the light sources 21 and 22 toward the display units 31 and 32 (see FIG. 1) provided on the front panel 3 are provided.

  Here, the display units 31 and 32 are, for example, colored or colorless transparent windows provided partially on the surface panel 3 that is colored and opaque when viewed from the front side. The transparent display portions 31 and 32 can be simultaneously formed on the front panel 3 by multicolor molding or the like. Further, the transparent display portions 31 and 32 can be formed by inserting a transparent member into the hole formed in the front panel 3 later. The display units 31 and 32 are appropriately provided for the operation areas 11, 12 and 13, the switches 14 a to 14 m, and the vicinity thereof.

  For example, the first display unit 31 represents the functions of the switches 14a to 14m with easy-to-understand figures and symbols. The display unit 31 is provided for each of the switches 14a to 14m, and is illuminated simultaneously by the common light source 21. The second display unit 32 indicates an on / off state, and is turned on / off by the individual light sources 22. In this case, the second display section 32 and the individual light sources 22 are provided for the switches 14a, 14e, 14j, 14l, 14m, and the like, respectively.

  In addition, as shown in FIG. 6, the light guides 33 and 34 are transparent resin members having a light incident portion 35 on the back surface side and a light exit portion 36 on the front surface side. The light incident part 35 is installed toward the light sources 21 and 22, and the light exit part 36 is installed toward the display parts 31 and 32. The light incident part 35 may be inserted into the hole 23 of the circuit board 4. Further, the light exiting part 36 may be inserted and disposed in the hole of the surface panel 3.

  Among these, the first light guide 33 is provided between the shared light source 21 and each display unit 31. In this case, the light guide 33 passes through the back side of the display unit 31 of all the switches 14a to 14m provided in the left and right operation regions 11 and 12 and the linear operation region 13 below the left and right operation regions 11, 12. A straight arc portion has a semicircular arc-shaped curved portion at both ends and a branch portion extending from the semicircular arc-shaped curved portion toward the center thereof (see FIG. 2). By providing such a light guide 33, the number of installed light sources 21 can be reduced. For example, the first light guide 33 is accommodated and installed in an accommodating portion provided on the back side of the front panel 3.

  In addition, the second light guide 34 is a relatively small-sized one in the form of a small chip provided between the individual light source 22 and each display unit 32 (see FIG. 2). For example, as described above, the second light guide 34 may be fitted into each hole formed in the front panel 3.

(3) Projection 41 of Light Guide 33 As shown in FIG. 6, the light guide 33 is provided with a projection 41 that comes into contact with the surface of the circuit board 4.

  Here, the protrusion 41 is a support protrusion for supporting the light guide 33 on the surface of the circuit board 4. It is particularly effective to provide the protrusion 41 on the back side of the large light guide 33 having a large size. For the light guide 33 having a large size, the protrusion 41 may be provided in a required number at a required interval that is optimal for supporting the light guide 33. The protrusion 41 has a minimum length necessary for preventing unnecessary interference with the touch sensor unit 5 and the light source 21 on the surface of the circuit board 4. Of course, the protrusion 41 may be provided for the relatively small light guide 34 if necessary.

(4) About the shape of the surface panel 3 As shown in the cross-sectional view of FIG. 7, the surface panel 3 has a plurality of concavo-convex portions 51 and 52 provided with a constant thickness t on both surfaces. ing.
The plurality of switches 14a to 14m of the surface panel 3 are assigned to the respective portions of the uneven portion 51 on the surface side.

  Here, the concavo-convex portion 51 is on the front side of the front panel 3, and the concavo-convex portion 52 is on the back side of the front panel 3, and these concavo-convex portions 51, 52 are each a concave portion and a convex portion. And are provided to confront each other. It is sufficient for the uneven portions 51 and 52 to have at least a level difference that is recognizable by the tactile sensation of a finger, but may be higher than that. The switches 14a to 14m are appropriately assigned to the respective portions (concave portions and convex portions) of the concave-convex portion 51 on the surface side of the front panel 3 (in the drawing, 14i to 14m are adjacent to the concave and convex portions adjacent to each other. Assigned in order).

  <Operation> The operation of this embodiment will be described below.

  The operation unit 1 of this embodiment is for operating an air conditioner of a car, for example. In this case, the air conditioner mode can be switched on and off by the air conditioner mode changeover switch (switch 14a) at the center of the operation area 11 having a circular shape on the right side. Further, the air volume can be raised or lowered step by step by the air volume up switch (switch 14b) and the air volume down switch (switch 14c) above and below the air conditioner mode switching switch (switch 14a). Alternatively, the air volume can be set or changed all at once by tracing the air volume setting switch (switch 14d) on the side (right side) of the air conditioner mode changeover switch (switch 14a) upward or downward.

  Similarly, on / off of the auto mode can be switched by an auto mode changeover switch (switch 14e) in the center of the left circular operation area 12. Further, the temperature setting can be raised or lowered step by step by the temperature up switch (switch 14f) and the temperature down switch (switch 14g) above and below the auto mode switch (switch 14e). Alternatively, the temperature setting can be set or changed all at once by tracing the temperature setting switch (switch 14h) on the side (left side) of the auto mode switch (switch 14e) upward or downward.

  In addition, the air conditioner power switch (switch 14i), the front window fog prevention switch (switch 14j), the blowing mode changeover switch (switch 14k), the rear window fog prevention switch (switch) 14l), the inside / outside air changeover switch (switch 14m) is used to turn on / off the power, turn on / off the front window fogging prevention mode, switch the air-conditioning air blowing mode (foot / chest etc.), and rear window The anti-fogging mode can be turned on / off, the inside / outside air can be switched, and the like.

  At this time, when the light sources 21 and 22 are turned on, the light from the light sources 21 and 22 is guided to the display units 31 and 32 of the front panel 3 through the light guides 33 and 34, and the display units 31 and 32 are illuminated. Is done.

  And the display part 31 is always illuminated by lighting of the light source 21 (for example accompanying ignition switch ON etc.). Further, the display unit 32 is appropriately turned on or off by the individual light source 22 according to the on / off state of the switches 14a, 14e, 14l, and 14m.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 1) About arrangement | positioning of the touch sensor part 5 and the light sources 21 and 22 The touch sensor part 5 is directly provided in the surface side of the circuit board 4, the light sources 21 and 22 are arrange | positioned in the back surface side of the circuit board 4, and the circuit board 4 A hole 23 through which light from the light sources 21 and 22 passes is provided.

  As a result, the touch sensor unit 5 and the light sources 21 and 22 can be efficiently arranged on both sides of the circuit board 4 so as to be integrated into one circuit board 4, so that the touch input device 2 can be thinned. It becomes possible to do.

  In addition, since the light sources 21 and 22 are arranged on the back side of the circuit board 4, the distance (t1 in FIG. 4) between the touch sensor unit 5 and the front panel 3 can be shortened. Since the light sources 21 and 22 do not protrude toward the surface side of the circuit board 4), the sensitivity of the touch sensor unit 5 can be improved.

  Furthermore, the light sources 21 and 22 are arranged on the back side of the circuit board 4, so that the light sources 21 and 22 and the light sources 21 and 22 are not on the front side of the circuit board 4. Since a large area (S1 in FIG. 4) of the touch sensor unit 5 can be secured, the sensitivity of the touch sensor unit 5 can be improved.

  If all of the light sources 21 and 22 and other circuit components are mounted on the back side of the circuit board 4 (single-side mounting), the touch sensor unit 5 can be provided on the entire surface of the circuit board 4. Thus, the sensitivity of the touch sensor unit 5 can be further improved accordingly. In addition, by providing the touch sensor unit 5 and the light sources 21 and 22 and other circuit components clearly on the front surface and the back surface of the circuit board 4, the manufacturing process of the circuit board 4 can be streamlined and the manufacturing cost can be reduced. It becomes possible to reduce.

  At this time, even if the light sources 21 and 22 are provided on the back surface side of the circuit board 4 by providing the hole 23 in the circuit board 4, the light from the light sources 21 and 22 is transmitted through the hole 23 of the circuit board 4. It can be led to the surface side without hindrance.

  On the other hand, for example, as shown in FIG. 8, when the light sources 21 and 22 are arranged on the surface side of the circuit board 4, at least the light sources 21 and 22 are on the surface side of the circuit board 4. The thickness (T1 <T2) of the touch-type input device 2 is increased as compared with the device.

  Further, since the light sources 21 and 22 are arranged on the front surface side of the circuit board 4, the distance (t1 <t2) between the touch sensor unit 5 and the front panel 3 is longer than that in FIG. Therefore, the sensitivity of the touch sensor unit 5 is reduced by that amount (that is, the amount of the light sources 21 and 22 projecting to the surface side of the circuit board 4).

  Furthermore, since the light sources 21 and 22 are arranged on the front surface side of the circuit board 4, the area (S1> S2) of the touch sensor unit 5 is smaller than that of FIG. The sensitivity of the sensor unit 5 is reduced.

  Therefore, as shown in FIG. 8, disposing the touch sensor unit 5 on the front surface side of the circuit board 4 involves various technical difficulties. A structure in which the sensor unit 5 is attached is employed. However, if it does in this way, in order to affix the sheet-like touch sensor part 5, it will be necessary to planarize the back surface side of the surface panel 3. FIG. And when making the back surface side of the front panel 3 flat, since it is normal that the surface side of the front panel 3 also becomes flat by the convenience of shaping | molding, freedom with respect to the surface design of the front panel 3 The degree will be reduced.

  On the other hand, when the structure of attaching the sheet-like touch sensor unit 5 to the back side of the front panel 3 is not adopted, the degree of freedom of the surface design of the front panel 3 is reduced. There is no.

(Effect 2) About the light guides 33 and 34 The light guides 33 and 34 were provided between the circuit board 4 which has the light sources 21 and 22 in the back surface side, and the said surface panel 3. FIG. As described above, the light guides 33 and 34 are provided between the circuit board 4 and the front panel 3 so that the light from the light sources 21 and 22 on the back side of the circuit board 4 is formed in the circuit board 4. 23 and the light guides 33 and 34 are guided to the display units 31 and 32 of the front panel 3 to reduce the number of light sources 21 and 22 to be used, thereby reducing component costs (particularly, In the case of the light guide 33). In addition, the so-called spotlight phenomenon in which only the positions of the light sources 21 and 22 are strongly illuminated can be prevented, and the display units 31 and 32 can be illuminated uniformly (particularly, in the case of the light guide 33).

  Further, by interposing light guides 33 and 34 (made of a resin having a higher dielectric constant than air) between the circuit board 4 provided with the touch sensor unit 5 and the front panel 3, the structure shown in FIG. In comparison, since the air layer having a low dielectric constant is reduced (W1 <W2), the sensitivity of the touch sensor unit 5 can be improved accordingly.

  At this time, since the light sources 21 and 22 are disposed on the back side of the circuit board 4, even if the light guides 33 and 34 are provided, the light sources 21 and 22 are not touched on the front side of the circuit board 4. The distance between the sensor unit 5 and the front panel 3 can be shortened (see t1 in FIG. 4). Therefore, the problem that the sensitivity of the touch sensor part 5 falls can be prevented because the distance between the touch sensor part 5 and the surface panel 3 becomes long (refer t2 of FIG. 8). Therefore, the light guides 33 and 34 can secure a minimum thickness necessary for guiding light with a margin, and the light guides 33 and 34 can exhibit a sufficient light guide function. .

(Effect 3) About the projection 41 of the light guide 33 (34) The projection 41 is provided on the light guide 33, and the light guide 33 is directly abutted and supported by the projection 41 on the surface of the circuit board 4. I tried to get it. As a result, the light guide 33 can be directly attached to the circuit board 4 so that the touch input device 2 can be thinned so as to be directly sandwiched between the front panel 3 and the circuit board 4. Even if the structure for holding the light guide 33 is employed, the contact area between the light guide 33 and the circuit board 4 is small, so that the light guide 33 is prevented from being damaged by contact with the circuit board 4 or the like. can do.

  In addition, by making the protrusion 41 the minimum necessary length, the distance between the touch sensor unit 5 and the front panel 3 becomes long and the problem that the sensitivity of the touch sensor unit 5 is reduced is prevented. can do. It is also possible to prevent an increase in the air layer having a low dielectric constant.

(Effect 4) About the shape of the surface panel 3 The plurality of switches 14a to 14m of the surface panel 3 are (one pair) with respect to each part (each recess or protrusion) of the uneven part 51 provided on the surface side of the surface panel 3. 1). Thereby, since the boundary position of each part of the uneven | corrugated | grooved part 51 of the surface side of the surface panel 3 can be clearly recognized now by tactile sensation, the position of each switch 14a-14m can be correctly and reliably touched each recessed part or convex part. It is possible to distinguish between them, and an operation based only on the tactile sensation is possible. As a result, there is no need to operate the switches 14a to 14m while gazing, so that the operability of the switches 14a to 14m and the safety during traveling of the vehicle can be improved.

  Further, even if no mechanical switch is used for the switches 14a to 14m, it is possible to finish the appearance substantially the same as the mechanical switch by the uneven portion 51 on the surface side, and the mechanical switch is provided on the front panel 3 of the touch input device 2. It is possible to produce a high-class feeling that does not seem to be the touch input device 2 by giving a feeling of texture, presence, real feeling (mechanical feeling), and the like. Therefore, the possibility of the touch input device 2 can be expanded.

  In addition, although it is shown as a mechanical switch, the mechanical switch is not used, so it is possible to avoid mechanical failures and malfunctions due to dust trapping, etc., and to extend the life and stabilize the operation. be able to. The touch input device 2 having such a surface panel 3 includes, for example, an operation unit 1 such as an air conditioner and an audio installed in a vehicle interior of a vehicle such as an automobile, and home appliances other than the vehicle such as a washing machine and a refrigerator. It can be optimally used as the operation unit 1 of the above and the operation unit 1 of other electronic devices.

  Further, the uneven portions 51 and 52 are provided on both surfaces of the front panel 3 while maintaining a constant thickness t. That is, the surface panel 3 has the concavo-convex portions 51 and 52 on both sides of which the concave portion and the convex portion face each other with a certain interval. As a result, the surface-side concavo-convex portion 51 can be molded in a state with no shape marks and good shape reproducibility, and the surface panel 3 with high accuracy and high quality can be obtained.

  And it is difficult to affix the sheet-like touch sensor unit 5 to the front panel 3 (the back surface) having the concavo-convex portion 52 on the back surface so that there are no wrinkles, gaps or air mixing (the back surface is Even if it is a flat surface, it takes time to apply the sheet-like touch sensor unit 5). As described above, the touch sensor unit 5 is provided on the surface side of the circuit board 4. The problem of pasting of the sheet-like touch sensor unit 5 (for example, labor required for pasting or a decrease in product yield due to poor pasting) does not occur. Therefore, it is possible to eliminate problems such as a decrease in sensitivity due to poor adhesion of the sheet-like touch sensor unit 5 to the back surface of the front panel 3, and to the surface side of the circuit board 4 in a state of being close to the front panel 3. High sensitivity can be ensured by the touch sensor unit 5 provided.

  While the embodiments have been described in detail with reference to the drawings, the embodiments are merely illustrative. Therefore, the present invention is not limited only to the embodiments, and it goes without saying that design changes and the like within a range not departing from the gist are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modification examples are disclosed, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

DESCRIPTION OF SYMBOLS 1 Operation part 2 Touch-type input device 3 Front panel 4 Circuit board 5 Touch sensor part 14a-14m Switch 21 Light source 22 Light source 23 Hole part 31 Display part 32 Display part 33 Light guide body 34 Light guide body 41 Protrusion part 51 Uneven part 52 Uneven part

Claims (4)

In the touch input device in which a touch sensor unit capable of sensing an operation on the front panel is installed between the front panel and the circuit board,
The touch sensor unit is provided on the surface side of the circuit board,
A light source is arranged on the back side of the circuit board,
The touch input device, wherein the circuit board is provided with a hole through which light from the light source is directed toward the front panel. The touch input device according to claim 1,
A light guide that guides light from the light source that has passed through the hole portion to a display unit provided in the front panel is provided between the circuit board and the front panel. Touch type input device. The touch input device according to claim 2,
A touch-type input device, wherein the light guide is provided with a protrusion (support protrusion) that contacts the surface of the circuit board. The touch input device according to any one of claims 1 to 3,
The front panel has a plurality of concavo-convex portions provided on both sides thereof while maintaining a certain thickness,
The touch-type input device, wherein a plurality of switches of the front panel are respectively assigned to the respective portions of the concave and convex portions on the front side.