JP2018146769A - card reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card reader capable of uniformizing light in a light guide having corner portions and displaying with uniform light surrounding a card reading unit. SOLUTION: A card reading unit 20 is provided in front of a main body unit 10, and a light guide 30 provided so as to surround an area of the card reading unit 20 and light is projected onto the light guide 30 in the main body unit 10. The light emitting portion 25 of 1 and the second light emitting portion 26 are arranged, and the light guide 30 has a corner portion 33, a first straight portion 34 sandwiching the corner portion 33, and a second straight portion 35. The first light emitting portion 25 faces the first straight portion 34 in the length direction via the corner portion 33 of the light guide 30, and the second light emitting portion 26 is on the outer peripheral side of the first straight portion 34. The light guide 30 is arranged in a first light guide path 36 that guides the light from the first light emitting unit 25 to the corner portion 33, and a second light guide path 36 that guides the light from the second light emitting unit 26 to the corner portion 33. It has a light guide path 37, and a space 38 is formed between the two. [Selection diagram] Fig. 4

Description

  The present invention relates to a card reader provided in an entry / exit management system that reads information on a card medium and unlocks an electric lock.

  In an office building or the like, an entrance / exit management system using a card reader and an electric lock is installed. The entrance / exit management system is installed, for example, to manage entrance / exit of each conference room when a plurality of conference rooms are arranged on the floor. In this case, a card reader is installed for each entrance of the conference room, and the card reader is connected to a local control panel installed for each floor of the building. The card reader is connected to an electric lock provided on the door of the conference room. The local control panel is connected to a client apparatus installed in a management department such as a center apparatus installed in a security room or the general affairs department via a transmission line.

  The user who enters and exits the conference room carries a non-contact IC card in which user identification information is registered, for example, and the user identification information is read and sent to the local control panel by holding the non-contact IC card over a card reader. When the collation with the user identification information pre-registered in the local control panel is obtained, the electric lock is unlocked and the door can be opened to enter and exit. For example, Patent Document 1 discloses a card reader that unlocks an electric lock by holding a non-contact IC card.

JP 2009-294886 A

  In the card reader, a main body portion having a card reading portion on the front surface is embedded in a wall surface. The main body is formed by integrating a front case body having a card reading section and a rear case body embedded in a wall surface. A circuit board having an antenna coil for communicating with a card medium, a capacitance switch sheet for functioning as a touch switch, etc. are fixed to the back side of the front case body, and the main body is integrated. It is stored in the rear case body.

  In order to display the reading status of the card medium, the card reader is provided with a display unit. In order to improve the visibility of the display unit, it is conceivable that a light guide disposed so as to surround the area of the card reading unit and an LED that projects light on the light guide are provided in the main body unit. By forming an area through which light from the light guide is transmitted in front of the main body, a display unit surrounding the card reading unit is formed.

  The light guide is required to emit light uniformly toward the front side. When the light guide is arranged so as to surround the rectangular card reading portion, corner portions are formed at the four corners, and the other portions are linear. In order to spread the light on both sides of the corner, it is necessary to place the LED near the corner of the light guide, but if it is left, the light will concentrate on the corner of the light guide and the light will be emitted uniformly. Is difficult.

  The present invention has been made in view of the above problems, and provides a card reader capable of uniformizing light in a light guide having a corner portion and displaying with uniform light surrounding a card reading unit. With the goal.

In order to solve the above-mentioned problem, a card reader according to the invention of claim 1 has a main body portion installed on the outer wall surface of the door locked and unlocked by an electric lock, and the main body portion is recorded on a card medium. A card reader having a card reader on the front for reading the received information,
A light guide provided so as to surround the area of the card reading unit, and a first light emitting unit and a second light emitting unit that project light from the outer peripheral side to the light guide are disposed in the main body unit,
The light guide has at least one corner, and a first straight portion and a second straight portion sandwiching the corner,
The first light emitting portion is disposed to face the first straight portion through the corner portion of the light guide in the length direction, and the second light emitting portion is the first straight portion. Arranged on the outer circumference side,
The light guide includes a first light guide path that guides light from the first light emitting section to the corner section, and a second light guide path that guides light from the second light emitting section to the corner section. In addition, a space portion is formed between the first light guide path and the second light guide path.

  According to the first aspect of the present invention, the light from the first light-emitting unit and the light from the second light-emitting unit are transmitted not only in the direction of the opposing first linear part but also in the orthogonal second linear part. It can be controlled to be dispersed in the direction, and the light can be evenly distributed throughout the light guide.

  The card reader according to the invention of claim 2 is characterized in that the second light guide portion is formed so as to protrude to the outer peripheral side from the corner portion.

  According to the second aspect of the present invention, the first light emitting unit and the second light emitting unit are separated from each other so that the respective optical paths can be sufficiently secured and the width of the space portion can be secured. Can be easily directed to the second linear portion side.

  Further, in the card reader according to the invention of claim 3, the light guide reflects the light from the first light emitting unit and the light from the second light emitting unit to the second linear portion side. A reflection part is provided on the inner peripheral part of the corner part.

  According to the invention of claim 3, the light from the first light emitting part and the light from the second light emitting part incident from the outer peripheral side of the corner part can be directed to the second linear part side, respectively. .

  Furthermore, in the card reader according to the invention of claim 4, the light guide has a second reflection that disperses the light in a plurality of directions before the light traveling through the second light guide path enters the corner. It is comprised by having a part.

  According to the fourth aspect of the present invention, it is possible to prevent the light traveling through the second light guide path from being concentrated in one place and to make the light uniform.

  And the card reader which concerns on invention of Claim 5 WHEREIN: The said light guide reflects the said light to the said 2nd linear part side, before the light which advances the said 1st light guide path enters into the said corner | angular part. It is characterized by having a third reflecting portion.

  According to the invention which concerns on Claim 5, a part of light from a 1st light emission part can be made to go to the 2nd linear part side, and light can be made more uniform.

  According to the card reader of the present invention, it is possible to surround and display the card reading unit with uniform light by allowing light to spread uniformly over the entire light guide.

It is the perspective view seen from the front side of the card reader of this embodiment. It is a front view of a card reader. It is a disassembled perspective view of a card reader. It is a front view of a light guide. It is a rear view of a light guide. FIG. 5 is an AA end view of FIG. 4. FIG. 6 is a BB end view of FIG. 5. It is the expansion front view of the corner | angular part of a light guide, Comprising: It is the figure which showed the path | route of the light from a 1st light emission part. It is the expansion front view of the corner | angular part of a light guide, Comprising: It is the figure which showed the path | route of the light from a 2nd light emission part.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of the card reader 1 according to the present embodiment as viewed from the front side, FIG. 2 is a front view of the card reader 1, and FIG. 3 is an exploded perspective view of the card reader 1. . The card reader 1 of this embodiment has a case-shaped main body 10. The main body 10 has a card reading unit 20 on the front for reading information on a card medium carried by the user.

  The main body 10 is formed by integrating a front case body 11 on the front side and a rear case body 12 on the back side, and a front sheet 54 is provided on the front surface of the front case body 11. The rear case body 12 is attached to the wall surface of the building. The front case body 11 has a card reading unit 20 that is a part that holds a card medium and a front display unit 22 having translucency provided so as to surround the periphery of the card reading unit 20. When the card reader 1 is attached to the wall surface of the building, the front case body 11 of the main body 10 is exposed, and the rear case body 12 is embedded in the wall surface.

  Around the card reading unit 20, a substantially U-shaped front display unit 22 is provided vertically. The top sheet 54 has a translucent area in the shape of the front display unit 22, and the light guide 30 disposed so as to face the area inside the main body 10, and the light guide 30 And an LED for projecting light. The front display unit 22 displays the locking state of the electric lock, the reading state of the card medium, and the like by color, lighting / flashing state.

  Side display portions 21 are provided on both upper sides of the front case body 11. The side display part 21 has LED corresponding to each, The display by light emission can be visually recognized from the front direction of the card reader 1, or a side surface direction. The LEDs of the side display unit 21 have three primary color LEDs, and any color can be generated by the combination thereof. The side display unit 21 displays the status display and warnings of the card reader 1 such as a warning mode and a warning release mode by color, lighting / flashing state.

  As shown in FIG. 3, the rear case body 12 includes a box-shaped portion 12a that opens to the front side so that a substrate and the like can be accommodated, and a mounting surface portion 12b that is formed to spread outward from the opening of the box-shaped portion 12a. And have. The front case body 11 has a front surface portion 11a that constitutes the front surface, and a side surface portion 11b that extends from the edge portion to the back surface side over four circumferences. The front surface portion 11a is formed with a concave portion 11c for housing the topsheet 54.

  The circuit board 50, the light guide 30, and the capacitance switch sheet 53 are fixed to the back side of the front case body 11. In the circuit board 50, the RF board 50a and the CPU board 50b are stacked in two stages by a spacer. An antenna coil 50c is disposed on the RF substrate 50a, and information on the card medium can be read by the antenna coil 50c and a reading circuit mounted on the substrate. On the RF substrate 50a, an LED that is a light emitter for performing display from the side display unit 21 of the main body unit 10 and an LED that projects light onto the light guide 30 are arranged. In addition, a Hall IC constituting a tamper switch is disposed on the CPU board 50b.

  The light guide 30 is separated into upper and lower parts and each has a substantially U-shaped shape. The light guide 30 has a shape corresponding to the front display portion 22 of the front case body 11 and is disposed so as to face the front display portion 22. Light from the LED disposed on the RF substrate 50a is incident on the light guide 30, and the light is emitted to the front side while being diffused throughout. For this reason, the light from the LED is evenly emitted from the entire front display unit 22. The front display unit 22 displays the locking state of the electric lock, the reading state of the card medium, and the like by color, lighting / flashing state.

  On the capacitance switch sheet 53, capacitance switches indicated by broken lines are arranged. The capacitance switch is any one of a warning setting switch 53a, a warning release switch 53b, and a numeric key switch 53c. These electrostatic capacitance switches change the electrostatic capacitance even if they do not directly contact the fingertips by touching the parts of the card reading unit 20 of the front case body 11 facing each other. Switch signal.

  A topsheet 54 is bonded and fixed to the recess 11 c of the front case body 11. On the surface sheet 54, a warning setting switch symbol 54a is located at a position corresponding to the warning setting switch 53a of the capacitance switch sheet 53, and a warning release switch symbol 54b is located at a position corresponding to the warning release switch 53b of the capacitance switch sheet 53. Are displayed. A card reading symbol 54 c is displayed at the center of the top sheet 54. Further, the top sheet 54 has a surface transmission part 54 d that becomes the front display part 22 by being attached to the front case body 11. The surface transmitting portion 54d is formed to face the light guide 30. Moreover, the surface transmission part 54d has a diffusibility, and the light irradiated from the inside of the main body part 10 is diffused by the surface transmission part 54d, so that it can be viewed not only from the front of the card reader 1 but also from the lateral direction. Improves sex.

  The front case body 11 and the rear case body 12 are fixed to the rear case body 12 by fixing screws 13 inserted from below.

  The light guide 30 will be described in detail. 4 is a front view of the light guide 30, FIG. 5 is a rear view of the light guide 30, FIG. 6 is an AA end view of FIG. 4, and FIG. 7 is a BB end view of FIG. Respectively. The light guide 30 is formed of a transparent resin material. The light guide 30 includes a substantially U-shaped emission part 31 that emits incident light to the front side, and a peripheral part 32 provided around the emission part 31. As shown in FIGS. 6 and 7, the emitting portion 31 protrudes more to the front side than the surrounding portion 32. The surrounding portion 32 is provided in order to make the light distribution of the emitting portion 31 uniform, for example, by reflecting light.

  Since the light guide 30 is substantially U-shaped, it has two corners 33. Hereinafter, the left corner portion 33 in FIG. 4, the vertical first linear portion 34 and the horizontal second linear portion 35 sandwiching the corner portion 33 will be described. In the corner portion 33, the emission portion 31 is formed in an arc shape and connects the first straight portion 34 and the second straight portion 35.

  The first light emitting unit 25 that emits blue and the second light emitting unit 26 that emits red are disposed above the corner portion 33. The first light emitting unit 25 is disposed so as to face the first straight line portion 34 in the length direction via the corner portion 33. For this reason, the first light emitting unit 25 emits light downward. The second light emitting unit 26 is disposed on the outer peripheral side of the light guide 30 with respect to the first linear portion 34. The second light emitting unit 26 is arranged so as to emit light downward like the first light emitting unit 25.

  In the light guide 30, a first light guide path 36 is formed so as to face the first light emitting section 25, and a second light guide path 37 is formed so as to face the second light emitting section 26. The first light guide path 36 is formed so as to protrude upward from the vicinity of the upper edge of the light guide 30. The second light guide path 37 is formed so as to protrude obliquely upward from the upper side part of the light guide 30. For this reason, the first light guide path 36 and the second light guide path 37 are not continuous, and a space 38 is formed between them.

  A first reflecting portion 40 that is cut out in a concave shape is formed on the inner peripheral portion of the corner portion 33 of the light guide 30. The first reflecting portion 40 is formed so as to substantially face the notch shape formed in the outer peripheral portion of the light guide 30 by the space portion 38 in the width direction of the emitting portion 31. More specifically, the first reflecting portion 40 includes a portion where the outer peripheral portion of the peripheral portion 32 formed along the direction of the first straight portion 34 is bent at an obtuse angle, and the direction of the second straight portion 35. Are formed by a portion obtained by bending the outer peripheral portion of the peripheral portion 32 formed along the obtuse angle to an obtuse angle and a portion obtained by smoothly connecting these portions.

  As shown in FIG. 7, a second reflecting portion 41 that is recessed in a concave shape is formed on the back surface of the second light guide path 37. The second reflecting portion 41 has a substantially square shape. A part of the light traveling through the second light guide path 37 is reflected by the second reflecting portion 41 before entering the corner portion 33.

  As shown in FIG. 6, a third reflecting portion 42 that is recessed in a concave shape is formed in front of the first light guide path 36. The third reflecting portion 42 has a substantially triangular shape. A part of the light traveling through the first light guide path 36 is reflected by the third reflecting portion 42 before entering the corner portion 33.

  The light path in the light guide 30 will be described. FIG. 8 is an enlarged front view of the corner portion 33 of the light guide 30 and shows a light path from the first light emitting portion 25. The first light emitting unit 25 is a blue LED and generates divergent light. In the first light guide path 36 that the first light emitting section 25 faces, an incident section 36a that protrudes in an arc shape is formed at a portion where light enters. The incident part 36a disperses the light from the first light emitting part 25 so that it can be easily guided to the second linear part 35 side.

  The light incident on the first light guide path 36 travels in the direction toward the opposing first linear portion 34 (L1-1), but a part of the light spreading to the left side in the figure (L1-2) The light is reflected at the boundary with the space 38 and proceeds in the direction toward the second straight line 35. Part of the light (L1-3) reflected at the boundary with the space portion 38 is further reflected by the first reflecting portion 40 toward the second straight portion 35. Thereby, compared with the case where the 1st reflection part 40 is not provided, the light emission amount of the end part vicinity of the corner | angular part 33 can be suppressed, and the light emission amount by the side of the 2nd linear part 35 can be increased. Further, a part of the light (L1-4) spreading from the first light emitting unit 25 to the right side in the drawing is reflected by the third reflecting unit 42 in the direction toward the second linear portion 35. As a result, part of the light from the first light emitting unit 25 traveling toward the first linear portion 34 can travel toward the second linear portion 35.

  The first reflecting portion 40 is provided in order to more efficiently direct light reflected at the boundary with the space portion 38 toward the second linear portion 35. Further, the boundary surface between the first light guide path 36 and the space portion 38 is formed as an inclined surface 36 b so that light can easily face the first reflecting portion 40 and the second straight portion 35. Furthermore, the light is reflected by the third reflecting portion 42 in the direction along the length direction of the second straight portion 35, so that a sufficient amount of light at the center portion of the second straight portion 35 is secured. can do.

  FIG. 9 is an enlarged front view of the corner portion 33 of the light guide 30 and shows the path of light from the second light emitting portion 26. The second light emitting unit 26 is a red LED and generates divergent light. The end surface of the second light guide 37 facing the second light emitting portion 26 is an inclined incident portion 37a. For this reason, a part of the light (L2-1) from the second light emitting unit 26 enters the second light guide 37 as it is, and a part of the light from the second light emitting unit 26 (L2-2). Is reflected by the incident part 37a and proceeds in the direction toward the second straight part 35. The light (L2-1) traveling through the second light guide path 37 is reflected and dispersed in a plurality of directions by the second reflecting portion 41, and the light (L2-3) that has not been reflected is reflected by the first linear portion 34. Proceed to the side. A part of light (L2-4) reflected in the incident portion 37a and traveling in the direction toward the second linear portion 35 is reflected by the first reflecting portion 40 toward the second linear portion 35. The second reflecting portion 41 has a shape that changes deeper in the thickness direction of the light guide 30 than the third reflecting portion 42, and the influence of the reflection is greater. As described above, the effects of the second reflecting portion 41 and the third reflecting portion 42 can be appropriately set by adjusting the depth.

  As in the case of the light from the first light emitting unit 25, the first reflecting unit 40 can more efficiently direct the light reflected by the incident unit 37a toward the second linear portion 35. In addition, a part of the light traveling toward the first linear portion 34 is dispersed in a plurality of directions by the second reflecting portion 41, so that the light traveling through the second light guide path 37 is concentrated on a specific portion of the corner portion 33. This prevents the amount of light from becoming too large.

  Further, the peripheral portion 32 in the second straight portion 35 is formed so as to become narrower as it gets farther from the light emitting portions 25 and 26 on both sides, and to become the thinnest at the approximate center. Thereby, the ratio of the width | variety of the radiation | emission part 31 becomes large among the radiation | emission part 31 and the peripheral part 32 toward the center side from the side part side in which the light emission parts 25 and 26 are arrange | positioned, and it distances from the light emission parts 25 and 26. Even when the amount of light is attenuated as it is, the attenuation of the light emission amount at the emitting portion 31 can be suppressed.

  Thus, in the light guide 30, the first light guide path 36 that guides the light from the first light emitting unit 25 to the corner portion 33 and the second light guide that guides the light from the second light emitting portion 26 to the corner portion 33. A light guide path 37 is provided, and the first light guide path 36 and the second light guide path 37 are separated by a space portion 38, whereby the light from the first light emitting section 25 and the second light emitting section 26 are separated. Can be dispersed not only in the direction of the opposing first linear portion 34 but also in the direction of the orthogonal second linear portion 35, so that the light can be uniformly distributed throughout the light guide 30. Can do. In addition, by providing the first reflecting portion 40, the second reflecting portion 41, and the third reflecting portion 42, light can be appropriately distributed to the first straight portion 34 and the second straight portion 35, respectively. Further, uniform light emission can be realized in the substantially U-shaped light guide 30 while suppressing the concentration of light.

  Up to this point, the shape of the left half of FIG. 4 of the light guide 30 has been described. However, the right half also has a symmetrical shape, and the first light emitting unit 25 and the second light emitting unit 26 are also disposed at symmetrical positions. Is done. A light guide 30 having a vertically symmetrical shape is also disposed in the lower half of the main body 10, and the first light emitting portion 25 and the second light emitting portion 26 are also disposed at vertically symmetrical positions. Accordingly, the light guide 30 emits light so as to surround almost the entire periphery of the card reading unit 20, and display from the front display unit 22 can be performed.

  Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and can be applied in various ways within the scope of its technical idea. In the present embodiment, the first light emitting unit 25 and the second light emitting unit 26 are arranged so as to emit light downward, but the arrangement may be changed according to the shape and characteristics of the light guide 30. For example, without changing the arrangement and orientation of the first light emitting unit 25, the first light guide path 36 may be provided with an inclined surface in the same manner as the second light guide path 37 to adjust the light path. Good. In addition, it is preferable to change the orientation of the first light emitting unit 25 and the second light emitting unit 26 in units of 90 degrees due to restrictions on the arrangement of circuit components, but the light emitting unit can be used without changing the shape of the light guide path. You may freely change the orientation and arrangement of the. Further, in the present embodiment, the first light emitting unit 25 and the first light guide path 36, and the second light emitting unit 26 and the second light guide path 37 are respectively substantially U-shaped vertical vertical sides in the light guide 30. Are arranged along substantially the same direction as the first straight portion 34 corresponding to the light guide 30, but the light emitting portion, the light guide path, and the straight portion may be arranged in substantially the same direction. In FIG. 2, the second linear portion 35 corresponding to the substantially U-shaped lateral side may be disposed along the same direction.

  Further, in the present embodiment, the depth of the second reflecting portion 41 is formed deeper than that of the third reflecting portion 42. However, the depth is adjusted to adjust the influence based on the light emission amount of the LED and the subsequent configuration. You may adjust suitably.

  In the present embodiment, two LEDs are arranged as the light emitting unit. However, three LEDs may be arranged so that the combined color is emitted from the light guide 30. In this case, it is possible to emit light in an arbitrary color by adding a light guide path to the light guide 30 and further adjusting the current value to each LED.

DESCRIPTION OF SYMBOLS 1 Card reader 10 Main part 11 Front case body 12 Rear case body 20 Card reading part 21 Side part display part 22 Front display part 25 1st light emission part 26 2nd light emission part 30 Light guide 31 Output part 32 Peripheral part 33 Corner portion 34 First straight portion 35 Second straight portion 36 First light guide path 36a Incident portion 36b Inclined surface 37 Second light guide passage 37a Incident portion 38 Space portion 40 First reflecting portion 41 Second reflecting portion 42 Third Reflector 50 Circuit Board 53 Capacitance Switch Sheet 54 Surface Sheet

Claims (5)

It has a main body installed on the outer wall surface of the door that is locked and unlocked by an electric lock, and the main body is a card reader having a card reading unit for reading information recorded on a card medium on the front,
A light guide provided so as to surround the area of the card reading unit, and a first light emitting unit and a second light emitting unit that project light from the outer peripheral side to the light guide are disposed in the main body unit,
The light guide has at least one corner, and a first straight portion and a second straight portion sandwiching the corner,
The first light emitting portion is disposed to face the first straight portion through the corner portion of the light guide in the length direction, and the second light emitting portion is the first straight portion. Arranged on the outer circumference side,
The light guide includes a first light guide path that guides light from the first light emitting section to the corner section, and a second light guide path that guides light from the second light emitting section to the corner section. A card reader, wherein a space is formed between the first light guide path and the second light guide path.   The card reader according to claim 1, wherein the second light guide portion is formed so as to protrude outward from the corner portion.   The light guide has a first reflecting portion that reflects light from the first light emitting portion and light from the second light emitting portion toward the second linear portion on an inner peripheral portion of the corner portion. The card reader according to claim 1, wherein the card reader is a card reader.   2. The light guide according to claim 1, further comprising: a second reflecting portion that disperses the light in a plurality of directions before the light traveling through the second light guide path enters the corner portion. The card reader according to any one of -3.   The light guide includes a third reflecting portion that reflects the light traveling on the first light guide path toward the second linear portion before the light enters the corner portion. The card reader according to any one of claims 1 to 4.

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