JP2009070654A - Illumination device for card reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device for a card reader in which the internal structure can be simplified to constitute at a low cost by irradiating by one light-emitting element a slot illuminating portion in the center of a side wall and an operating switch at the peripheral portion of the side wall through a light guide body, and energy-saving and power-saving can be realized. <P>SOLUTION: A first light guide part 21 has its base end portion 21a arranged opposed to a common LED 11 and extends to the front side in insertion direction and its top end portion 21b positioned opposed to on the rear face side of an indicator 3. A second light guide part 22 is branched from a middle portion 21c of the first light guide part 21 and extends in right and left direction crossing the insertion direction, and the terminal portions 22L, 22R at right and left are positioned respectively opposed to each other on the rear side of a history switch 4 on the upper stage left-hand side and a volume switch 5 on the upper stage right-hand side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an illumination device used for a card reader such as an ETC on-vehicle device.

  In recent years, advanced cashless systems such as ETC (Electronic Toll Collection: Automatic Toll Collection System) and electronic debit systems are rapidly spreading. In these systems, data (transaction information) is stored (input) and read (output) by a card reader (also called a card reader / unwriter) such as an ETC on-board device and an over-the-counter settlement device (over-the-counter settlement device) mainly through an IC card. ) Is performed. In addition, these card readers have additional functions such as voice response and voice guidance by voice synthesis, for example, in addition to the operation display (LED display) at the time of data storage / reading in the IC card, such as volume control. An operation switch is provided.

  On the other hand, in electronic devices such as video devices and audio devices, two self-illuminating surfaces (operation display surfaces) provided on one side surface (side wall) of a housing (case body) are provided in order to emit light while suppressing luminance unevenness. It has been proposed to illuminate with one light emitting element (LED) (see Patent Document 1).

JP 2001-94260 A (FIG. 9)

  A light emitting element is used in the lighting device of the electronic device shown in Patent Document 1, and the power consumption is much smaller than when a conventional halogen lamp or the like is used for each self-illuminated surface. However, as described above, recent electronic devices and card readers have additional functions such as voice response and voice guidance by voice synthesis, for example, operation switches for volume adjustment in addition to operation display at the time of storage and reading Therefore, it is necessary to display the operation of these operation switches, and the internal structure may be complicated accordingly. At that time, when used as an in-car card reader, the power consumption of the entire vehicle is increasing with the recent enhancement of functionality and performance. Electric power is demanded. Similarly, when used as a store-reading card reader, in addition to simplification of the internal structure, further energy saving and power saving are demanded from the viewpoint of recent global environmental protection.

  The object of the present invention is to irradiate the slot illumination part in the central part of the side wall and the operation switch in the peripheral part of the side wall with one light emitting element through the light guide, thereby simplifying the internal structure and configuring it at low cost. An object of the present invention is to provide an illumination device for a card reader capable of saving energy and power.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the card reader illumination device of the present invention is
A card slot formed at the center of the side wall on the operator side and opened to insert a card capable of storing / reading information in a direction perpendicular to the side wall; and disposed at the periphery of the side wall; A box-shaped case body having an operation switch for artificially operating in association with storage / reading of information in the card, and a slot illumination unit disposed in the vicinity of the card slot and illuminating the card slot; ,
A light emitting element that is arranged inside the case body and irradiates the slot illumination unit from the inside by emitting light from the back side to the near side in the card insertion direction;
It is arranged between the light emitting element and the operation switch, introduces light emitted from the light emitting element at the base end portion, propagates in a direction crossing the insertion direction, and places the operation switch inside at the end portion. And a light guide that irradiates from
The light emitted from the light emitting element propagates along the insertion direction of the card to irradiate the slot illumination unit, and propagates in the direction intersecting the insertion direction via the light guide to transmit the operation switch. It is characterized by irradiating.

  Thus, by irradiating the slot illumination part (for example, an indicator) in the central part of the side wall and the operation switch (for example, the operation display part) in the peripheral part of the side wall with one light emitting element (LED) through the light guide, The internal structure of the card reader (for example, ETC on-vehicle device) can be simplified and configured at low cost, and energy and power can be saved. The “card reader” includes an over-the-counter payment machine in addition to the ETC in-vehicle device. The “card” includes an IC card and a magnetic card.

At this time, the light guide body is disposed so as to face the light emitting element whose base end portion is located inside the case body and extends to the near side in the insertion direction, and its tip end portion faces the slot illumination portion disposed in the central portion of the side wall. On the left and right operation switches, which constitute the first light guide part positioned, extend from the middle part of the first light guide part and extend in the left-right direction intersecting the insertion direction, and the end part is arranged in the peripheral part of the side wall Each of the second light guides located opposite each other,
Light emitted from the light emitting element propagates along the insertion direction from the base end to the tip through the first light guide to irradiate the slot illumination unit, and inserts the second light guide from the midway to the end. It is desirable to irradiate each of the operation switches by propagating in a direction crossing the direction.

  Accordingly, the light emitted from the light emitting element propagates from the base end portion of the first light guide portion to the tip end portion, so that the card slot is illuminated by the slot illumination portion disposed in the vicinity of the card slot. On the other hand, a part of the light branched from the middle part of the first light guide part propagates to the end part of the second light guide part, thereby illuminating the left and right operation switches arranged in the peripheral part of the side wall from the inside. Thus, since the light guide has the first light guide and the second light guide, the slot illumination unit at the center of the side wall and the operation switch (operation display unit) at the side of the side wall are placed inside with a small amount of light. Can be illuminated from. Therefore, the light guide can be simply configured and further energy saving and power saving can be achieved.

Specifically, the light emitting element is mounted on the main surface of the wiring board arranged horizontally inside the case body so as to have a vertical optical axis that is orthogonal to the main surface. With
The first light guide part is reflected by the reflecting surface formed in the middle or refracted by the refracting surface after the light emitted from the light emitting element is introduced into the base end portion and propagates along the optical axis, and changes its direction. As it propagates to the near side in the insertion direction, it extends in the propagation direction and the tip reaches the slot illumination part,
The second light guide portion extends in the diffusion direction as a part of the light emitted from the light emitting element diffuses in the left-right direction along the reflective surface or the refracting surface in the middle portion of the first light guide portion. Can reach the left and right operation switches, respectively.

  Accordingly, light emitted from a light emitting element (so-called top view type) having an optical axis orthogonal to the mounting surface is reflected by the reflecting surface of the first light guide unit (or refracted by the refracting surface) and reaches the tip. Then, the slot illumination unit is illuminated from the inside. In addition, light emitted from a top-view type light emitting element has a property of diffusing along the reflection surface (or refraction surface) after reflection on the reflection surface (or refraction on the refraction surface), so that part of the light is It propagates through the second light guide portion extending in the diffusion direction to reach the end portion, and illuminates the operation switch (operation display portion) from the inside. Thus, by using a top view type light emitting element and a reflective surface (or a refracting surface), a light guide (first light guide portion and second light guide portion) is configured simply and inexpensively, Energy and power can be saved.

  At this time, the second light guide portion can be formed in a round bar shape so as to continuously or intermittently reduce the diameter (that is, reduce the cross-sectional area) from the midway portion to the end portion. As a result, the light flux converges on the exit side (terminal side) of the second light guide unit, and the operation switch can be brightly illuminated with a small amount of light, so that further energy saving and power saving can be achieved. Note that the “main surface of the wiring substrate” refers to at least one of the front surface and the back surface of the plate-shaped wiring substrate. In addition, when the reflective surface (or the refracting surface) of the first light guide unit is subjected to graining or diamond cutting, it is possible to suppress variations in the brightness of incident light (introduction light) to the second light guide unit.

  In addition, a sub-reflection surface or a sub-refractive surface for changing the direction of the light propagating through the second light guide unit in the diffusing direction toward the operation switch is formed at the end of the second light guide unit. Can do. Therefore, the light propagating through the second light guide part in the diffusing direction is reflected by the sub-reflection surface at the end part (or refracted by the sub-refractive surface) and redirected, and the operation switch (operation display unit) is turned from the inside. Illuminate. Thus, by forming the sub-reflecting surface (or refracting surface) in the second light guide unit, the propagation path from the light emitting element to the operation switch can be configured simply and inexpensively, and energy and power can be saved. . In this case as well, if the sub-reflecting surface (or sub-refractive surface) of the second light guide unit is subjected to graining or diamond cutting, it is possible to suppress variations in the brightness of the outgoing light (derived light) to the operation switch. .

  Further, the operation switch constitutes a part of the side wall of the case body on the operator side, and is rotationally displaced around the rotational axis arranged parallel to the side wall in a form facing the end portion of the light guide. be able to. As a result, the rotary operation switch can be disposed close to the end of the light guide (second light guide), so that the operation switch (display content thereof) can be illuminated brightly.

  For example, when the distal end portion of the light guide is formed integrally with the operation switch, and the operation switch has an operation display portion on the operator side for representing the operation content, when rotating around the rotation axis, The light guide body can be elastically deformed by generating a twist around the rotation axis. In this case, by integrating the operation switch with the end portion of the light guide, the propagation path from the light emitting element to the operation switch can be configured more simply and inexpensively, and energy and power can be saved. In addition, since the operation display unit for representing the operation content is formed on the operator side (near side) of the operation switch, the display content of the operation display unit can be directly recognized and the operation content can be easily observed.

Alternatively, the entire light guide is formed separately from the operation switch and is fixedly arranged inside the case body, and an operation display unit for displaying the operation content of the operation switch on the operator side at the end While is formed
In the part corresponding to the operation display part of the operation switch, a window hole penetrating the operation switch in the insertion direction is formed,
The display content of the operation display unit formed at the end of the light guide can be made visible through the window hole of the operation switch.

  Thus, by separating the light guide from the operation switch, the light guide is unlikely to be twisted and the like, and thus durability can be improved without using an expensive material for the light guide.

  As an example, the distal end portion of the light guide is inserted into the window hole of the operation switch, and the display content of the operation display portion can be visually recognized outside the side wall of the case body. In this case, since the display content of the operation display part formed in the terminal part of the light guide can be directly recognized on the outside of the case body, the operation content can be easily seen.

  Alternatively, as another example, the end portion of the light guide is arranged inside the case body with respect to the operation switch, and the display content of the operation display unit can be visually recognized through the window hole of the operation switch. In this case, since the operation display part formed in the terminal part of the light guide is located inside the operation switch, the operation display part does not protrude outside from the case body and can be prevented from being damaged.

Example 1
Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. FIG. 1 is a perspective explanatory view showing the appearance of an ETC vehicle-mounted device as an example of a card reader according to the present invention, FIG. 2 is a partially broken plan view thereof, and FIG. 3 is a front view thereof. The case body 1 of the ETC vehicle-mounted device 100 (card reader) shown in FIGS. 1 and 3 has a rectangular parallelepiped box shape, and a card slot 2 (card insertion slot) formed in the center of the side wall 1a on the operator side, It has an indicator 3 (slot illuminating unit) disposed in the vicinity (for example, directly above) of the card slot 2 and a plurality (for example, four) of operation switches 4 to 7 disposed in the peripheral portion of the side wall 1a.

  The card slot 2 is opened through in the thickness direction in order to insert an ETC card C (IC card) capable of storing / reading information in a direction perpendicular to the side wall 1a. The indicator 3 is made of, for example, a transparent or translucent polymer material such as polycarbonate resin (PC) and has translucency, and illuminates the card slot 2 with light from a shared LED 11 (light emitting element) described later.

  The operation switches 4 to 7 are made of a transparent or translucent polymer material such as polycarbonate resin (PC) and have translucency, and store information (mainly charge data) in the ETC card C. When manipulating information from C, it is manipulated artificially. Specifically, the history switch 4 on the left side of the upper stage is pressed when reading fee payment data stored in the ETC card C. The volume increase switch 5 on the right side of the upper stage is pressed to increase the volume of the synthesized voice for voice response / voice guidance when information is stored / read in the ETC card C, for example. The lower left card eject switch 6 is pressed when the ETC card C is removed from the card slot 2. The volume reduction switch 7 on the lower right side is pressed to decrease the volume of the synthesized speech.

  As shown in FIG. 2, a common LED 11 that irradiates the indicator 3 from the inside by emitting light from the back side in the insertion direction of the ETC card C (see FIG. 3) to the near side in the case body 1. And a light guide 20 that is disposed between the shared LED 11 and the upper operation switches 4 and 5 and irradiates the upper operation switches 4 and 5 from the inside. The light guide 20 is made of, for example, a transparent or translucent polymer material such as polycarbonate resin (PC) and has translucency, and a first light guide 21 that irradiates the indicator 3 from the inside, and an operation And a second light guide 22 for irradiating the switches 4 and 5 from the inside.

  Specifically, the first light guide portion 21 has a base end portion 21 a disposed opposite to the common LED 11 and extending toward the front side in the insertion direction, and a distal end portion 21 b positioned opposite the back side of the indicator 3. (See FIG. 4). On the other hand, the second light guide portion 22 branches from the middle portion 21c of the first light guide portion 21 and extends in the left-right direction intersecting the insertion direction (for example, a direction having an intersection angle of 60 ° to 80 °), and the left and right end portions 22L. , 22R are respectively opposed to the back side of the history switch 4 on the left side of the upper stage and the volume increase switch 5 on the right side of the upper stage. Thereby, the light emitted from the shared LED 11 propagates along the insertion direction from the proximal end portion 21a to the distal end portion 21b through the first light guide portion 21, and irradiates the indicator 3. Further, a part of the light emitted from the shared LED 11 propagates in the second light guide portion 22 from the middle portion 21c of the first light guide portion 21 to the end portions 22L and 22R in the direction intersecting the insertion direction, and the history switch 4 And the volume increase switch 5 are respectively irradiated. As described above, the light guide 20 includes the first light guide portion 21 and the second light guide portion 22, so that the indicator 3 and the operation switches 4 and 5 can be illuminated from the inside with a small amount of light. Accordingly, the light guide 20 can be configured simply and energy and power can be saved.

  The internal structure of the case body 1 will be described more specifically. 4 is a cross-sectional view taken along the line AA in FIG. 3, FIG. 5 is a cross-sectional view taken along the line BB in FIG. 3, and FIG. As shown in FIG. 4, the shared LED 11 is arranged in a vertical direction perpendicular to the upper surface 10 a on the upper surface 10 a (surface; main surface) of the wiring board 10 disposed horizontally inside the case body 1. It is mounted in a top view type having an optical axis Y of. The first light guide portion 21 changes the direction after the light emitted from the shared LED 11 is introduced into the base end portion 21a and propagates along the optical axis Y, is reflected by the reflecting surface 21d formed in the middle, and changes its direction. As it propagates to the near side, the tip 21b reaches the indicator 3 and is integrated by extending in the propagation direction. The second light guide part 22 extends in the diffusion direction as a part of the light emitted from the shared LED 11 diffuses in the left-right direction along the reflecting surface 21d in the midway part 21c of the first light guide part 21, and extends to the end. The parts 22L and 22R reach the left and right operation switches 4 and 5, respectively, and are integrated (see FIG. 2).

  Thus, the light emitted from the common LED 11 of the top view type is reflected by the reflecting surface 21d of the first light guide 21 and reaches the tip 21b, and illuminates the indicator 3 from the inside. Further, the light emitted from the shared LED 11 of the top view type has a property of diffusing along the reflecting surface 21d after being reflected by the reflecting surface 21d. Therefore, a part of the light extends in the diffusing direction. And reach the end portions 22L and 22R to illuminate the operation switches 4 and 5 from the inside (see FIG. 2). Therefore, by using the common LED 11 of the top view type and the reflecting surface 21d, the light guide 20 (the first light guide 21 and the second light guide 22) can be configured simply and inexpensively, thereby saving energy and power. Can be planned.

  Note that the second light guide portion 22 shown in FIG. 2 has a round bar shape and is continuously reduced in diameter (that is, reduced in cross-sectional area) from the midway portion 21c toward the end portions 22L and 22R. As a result, the light flux converges on the exit side (end portions 22L and 22R side) of the second light guide portion 22, and the operation switches 4 and 5 can be brightly illuminated with a small amount of light. Electricity can be planned. In addition, if the reflective surface 21d (see FIG. 4) of the first light guide unit 21 is subjected to graining or diamond cutting, variation in the luminance of incident light (introduced light) to the second light guide unit 22 can be suppressed. it can.

  As shown in FIG. 6, the end portions 22 </ b> L and 22 </ b> R of the second light guide portion 22 are changed in direction so that the light propagating through the second light guide portion 22 in the diffusion direction is directed to the operation switches 4 and 5. A secondary reflection surface 22d is formed. Therefore, the light propagating through the second light guide portion 22 in the diffusing direction is reflected by the sub-reflecting surfaces 22d of the end portions 22L and 22R to change the direction, and illuminate the operation switches 4 and 5 from the inside. Thus, by forming the sub-reflecting surface 22d on the second light guide portion 22, the propagation path from the shared LED 11 to the operation switches 4 and 5 can be configured simply and inexpensively, and energy and power can be saved. . Also in this case, if the sub-reflecting surface 22d of the second light guide 22 is subjected to graining or diamond cutting, it is possible to suppress variations in the brightness of the emitted light (derived light) to the operation switches 4 and 5.

  As shown in FIG. 5, the lower left card eject switch 6 and the lower right volume reduction switch 7 are mounted on the lower surface 10b (back surface; main surface) of the wiring board 10, and the optical axis is parallel to the lower surface 10b. Side-view type single LEDs 12 and 13 (light emitting elements) arranged in a shape are opposed to the inside (rear side) of the corresponding switches 6 and 7.

  2 and 6, the operation switches 4 and 5 constitute a part of the side wall 1 a on the operator side of the case body 1 and face the end portions 22 </ b> L and 22 </ b> R of the light guide 20. Is rotated around a rotation axis O (rotation shaft 1b) disposed in parallel with the rotation axis O. As a result, the rotary operation switches 4 and 5 can be disposed close to the end portions 22L and 22R of the light guide 20 (second light guide portion 22). Can be brightly illuminated.

  Specifically, as shown in FIG. 5, the end portions 22 </ b> L and 22 </ b> R of the light guide 20 are formed integrally with the operation switches 4 and 5. Therefore, when the operation switches 4 and 5 have operation display portions 4a and 5a for displaying the operation content on the operator side, the light guide 20 is rotated about the rotation axis O. It can be elastically deformed by generating a twist around O. In this case, by integrating the operation switches 4 and 5 with the end portions 22L and 22R of the light guide 20, the propagation path from the common LED 11 to the operation switches 4 and 5 can be configured more simply and inexpensively. Electricity can be planned. Further, since the operation display units 4a and 5a for displaying the operation content are formed on the operator side (near side) of the operation switches 4 and 5, the display content of the operation display units 4a and 5a can be directly visually recognized. Easy to understand the contents.

(Example 2)
FIG. 7 is a cross-sectional view showing another embodiment of the light guide instead of FIG. In the ETC vehicle-mounted device 200 (card reader) shown in FIG. 7, the entire light guide 120 is formed separately from the operation switches 4 and 5 and is fixedly arranged inside the case body 1. On the operator side of the end portions 122L and 122R, operation display portions 122La and 122Ra for expressing the operation contents of the operation switches 4 and 5 are formed. Window holes 4b and 5b penetrating the operation switches 4 and 5 in the insertion direction are formed at portions corresponding to the operation display portions 122La and 122Ra of the operation switches 4 and 5. The display contents of the operation display portions 122La and 122Ra formed at the end portions 122L and 122R of the light guide 120 are visible through the window holes 4b and 5b of the operation switches 4 and 5.

  Specifically, the end portions 122L and 122R of the light guide 120 are inserted into the window holes 4b and 5b of the operation switches 4 and 5, and the display contents of the operation display portions 122La and 122Ra are outside the side wall 1a of the case body 1. It becomes visible at.

  In this way, by separating the light guide 120 from the operation switches 4 and 5, the light guide 120 is less likely to be twisted and the like, so that durability can be achieved without using an expensive material for the light guide 120. Can be improved. Moreover, since the display content of the operation display parts 122La and 122Ra formed in the end parts 122L and 122R of the light guide 120 can be directly visually recognized on the outside of the case body 1, the operation content can be easily seen.

(Example 3)
FIG. 8 is a cross-sectional view showing still another embodiment of the light guide instead of FIG. In the ETC vehicle-mounted device 300 (card reader) shown in FIG. 8, the end portions 222L and 222R of the light guide 220 are arranged inside the case body 1 with respect to the operation switches 4 and 5, and the display contents of the operation display portions 222La and 222Ra Becomes visible through the window holes 4b and 5b of the operation switches 4 and 5. In this case, the operation display portions 222La and 222Ra formed at the end portions 222L and 222R of the light guide body 220 are located inside the operation switches 4 and 5 and thus do not protrude from the case body 1 to prevent damage or the like. it can.

  In FIG. 7 (Embodiment 2) and FIG. 8 (Embodiment 3), portions having the same functions as those in FIG. 5 (Embodiment 1) are denoted by the same reference numerals and description thereof is omitted. In the above embodiment, only the case where the top view type shared LED 11 is allowed to face the propagation path for illuminating the upper left history switch 4 and the upper right volume increase switch 5 has been described. A top-view type shared LED mounted on the lower surface 10b of the wiring board 10 may face a propagation path for irradiating the eject switch 6 and the volume reduction switch 7 on the lower right side. Furthermore, in these embodiments, only the ETC in-vehicle device has been described as the card reader.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective explanatory drawing which shows the external appearance of the ETC onboard equipment as an example of the card reader which concerns on this invention. The partially broken top view of FIG. The front view of FIG. AA sectional drawing of FIG. BB sectional drawing of FIG. The D section expansion explanatory drawing of FIG. Sectional drawing which shows the other Example of a light guide instead of FIG. Sectional drawing which shows the further another Example of a light guide instead of FIG.

Explanation of symbols

1 Case body 1a Side wall 2 Card slot (card insertion slot)
3 Indicator (slot lighting part)
4 History switch (operation switch)
4a Operation display section 4b Window hole 5 Volume increase switch (operation switch)
5a Operation display section 5b Window hole 6 Card eject switch (operation switch)
7 Volume reduction switch (operation switch)
10 Wiring board 10a Upper surface (surface; main surface)
10b Lower surface (back surface; main surface)
11 Common LED (light emitting device)
12,13 Single LED (light emitting element)
DESCRIPTION OF SYMBOLS 20 Light guide 21 First light guide part 21a Base end part 21b Front end part 21c Midway part 21d Reflective surface 22 Second light guide part 22L, 22R Terminal part 22d Sub-reflective surface 100 ETC vehicle-mounted device (card reader)
CETC card (IC card)
O Rotation axis Y Optical axis

Claims (9)

A card slot formed at the center of the side wall on the operator side and opened to insert a card capable of storing / reading information in a direction perpendicular to the side wall; and disposed at the periphery of the side wall; A box-shaped case body having an operation switch for artificially operating in association with storage / reading of information in the card, and a slot illumination unit disposed in the vicinity of the card slot and illuminating the card slot; ,
A light emitting element that is arranged inside the case body and irradiates the slot illumination unit from the inside by emitting light from the back side to the near side in the card insertion direction;
It is arranged between the light emitting element and the operation switch, introduces light emitted from the light emitting element at the base end portion, propagates in a direction crossing the insertion direction, and places the operation switch inside at the end portion. And a light guide that irradiates from
The light emitted from the light emitting element propagates along the insertion direction of the card to irradiate the slot illumination unit, and propagates in the direction intersecting the insertion direction via the light guide to transmit the operation switch. Illuminating device for card reader, characterized in that The light guide includes a slot illumination in which the base end portion is disposed opposite to the light emitting element located inside the case body and extends toward the front side in the insertion direction, and a tip end portion thereof is disposed at a central portion of the side wall. The first light guide unit is positioned opposite to the first light guide unit. The first light guide unit branches from the middle of the first light guide unit and extends in the left-right direction intersecting the insertion direction, and the end portion is disposed in the peripheral portion of the side wall. A second light guide portion positioned opposite to the left and right operation switches,
The light emitted from the light emitting element propagates along the insertion direction from the proximal end portion to the distal end portion of the first light guide portion to irradiate the slot illumination portion, and causes the second light guide portion to pass through the second light guide portion. The card reader illumination device according to claim 1, wherein the operation switch is irradiated from the midway part to the terminal part in a direction intersecting the insertion direction. The light emitting element is mounted on the main surface of the wiring board disposed horizontally inside the case body in a form having a vertical optical axis perpendicular to the main surface,
The first light guide part is reflected by a reflecting surface formed in the middle or refracted by a refracting surface after light emitted from the light emitting element is introduced into the base end part and propagates along the optical axis. As the direction changes and propagates to the near side of the insertion direction, the tip part reaches the slot illumination part extending in the propagation direction,
The second light guide unit has a diffusion direction as a part of light emitted from the light emitting element diffuses in the left-right direction along the reflective surface or the refractive surface in the middle part of the first light guide unit. The card reader illumination device according to claim 2, wherein the terminal portion extends to reach the left and right operation switches, respectively.   A sub-reflective surface or a sub-refractive surface for changing the direction of the light propagating through the second light guide unit in the diffusion direction toward the operation switch is formed at the end of the second light guide unit. The card reader illumination device according to claim 3.   The operation switch forms a part of the side wall on the operator side of the case body and rotates around a rotation axis arranged parallel to the side wall in a form facing the end portion of the light guide. The illumination device for a card reader according to any one of claims 1 to 4, wherein the illumination device is displaced.   The distal end portion of the light guide is formed integrally with the operation switch, and the operation switch is rotationally displaced around the rotation axis in a form having an operation display portion on the operator side for representing the operation content. The card reader illumination device according to claim 5, wherein the light guide body is elastically deformed by generating a twist around the rotation axis. The light guide is entirely formed separately from the operation switch and is fixedly arranged inside the case body, and an operation for displaying the operation content of the operation switch on the operator side of the end portion. While the display is formed
A window hole penetrating the operation switch in the insertion direction is formed in a portion corresponding to the operation display portion of the operation switch,
The card reader illumination device according to claim 5, wherein display contents of an operation display unit formed at an end portion of the light guide are visible through a window hole of the operation switch.   8. The card reader illumination according to claim 7, wherein an end portion of the light guide is inserted into a window hole of the operation switch, and a display content of the operation display unit is visible outside a side wall of the case body. apparatus.   8. The card according to claim 7, wherein an end portion of the light guide is disposed inside the case body with respect to the operation switch, and display content of the operation display unit is visible through a window hole of the operation switch. Lighting device for readers.

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