JP5138756B2 - Pen locking mechanism and electronic blackboard device to which the pen locking mechanism is applied - Google Patents

Description

  The present invention relates to a lock mechanism for a pen that can accommodate a battery and an electronic blackboard device to which the lock mechanism is applied.

  There is a lock mechanism that operates in conjunction with the storage of the battery. An electronic device to which such a lock mechanism is applied is known which operates so that the claw of the lock member engages with the rear end of the battery as the battery is accommodated in the battery accommodating portion. (For example, refer to Patent Document 1). Also known is a battery pull-out prevention device that detects a power state and uses an electromagnet to fix the battery to a device when the power is on (see, for example, Patent Document 2). On the other hand, there is also known a lock mechanism that prevents the IC card from being forgotten to lock when a lock knob that locks the removal of the IC card interferes with the battery in an unlocked state (see, for example, Patent Document 3). In addition, Patent Documents 4 and 5 exist as prior art documents related to the present invention.

JP 2004-14308 A International Publication No. 00/51194 JP 2003-44793 A Japanese Patent Laid-Open No. 5-74431 JP 2005-346992 A

  Since the pen tip of the pen is used in contact with another object, it is consumed faster than other parts of the pen. For this reason, the pen is often configured to be removable so that only the pen tip portion can be replaced. However, in a configuration in which the pen tip is easily removed, various problems such as a decrease in comfort during use, loss due to removal of a child, and safety may occur. The electronic device of Patent Document 1 is for locking a battery accommodated in conjunction with the accommodation of the battery, and does not lock the other with the accommodation of the battery. Moreover, the prevention apparatus of patent document 2 fixes a battery using a power supply state, and does not lock others in conjunction with accommodation of a battery. On the other hand, the lock mechanism of Patent Document 3 also manually switches the state of the lock knob, and does not interlock with the storage of the battery. As described above, none of Patent Documents 1 to 3 interlocks the lock of the other part and the storage of the battery.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a pen locking mechanism capable of switching the lock state of other parts in conjunction with the storage of a battery, and a battery blackboard device to which the lock mechanism is applied.

  The lock mechanism for a pen according to the present invention is applied to a pen (4) including an attachment / detachment portion (4PS) that can be attached to and detached from a main body (4DB) and a battery housing portion (4DS) that houses a battery (5). The battery accommodating portion has a switching portion that switches a state of the attachment / detachment portion attached to the pen between a locked state in which attachment / detachment of the attachment / detachment portion is locked and a release state in which the attachment / detachment lock of the attachment / detachment portion is released. (AP) is provided, and the switching unit is in the locked state when the battery is accommodated in the battery accommodating portion, and is in the released state when the battery is not accommodated in the battery accommodating portion. Each of them switches the state of the detachable part.

  According to the present invention, when the battery is accommodated in the battery accommodating portion, the state of the detachable portion is switched to the locked state, and when the battery is not accommodated, the state of the detachable portion is switched to the released state. For this reason, in conjunction with the storage of the battery, the lock state of the detachable part, which is another part, can be switched. Thereby, the attachment / detachment portion can be reliably locked by a natural operation of housing the battery. Since pens that use electric power are usually used in a state in which a battery is accommodated, the attachment / detachment portion is locked when the battery is accommodated, thereby preventing the attachment / detachment portion from coming off during use. can do. For this reason, the uncomfortable feeling at the time of use, loss of an attaching / detaching part, etc. can be suppressed. On the other hand, since the lock of the attachment / detachment portion can be easily released by taking out the battery from the housing portion, the attachment / detachment portion can be removed relatively easily.

  Any type of switching unit may be used. For example, in one aspect of the pen locking mechanism according to the present invention, the switching unit operates between a lock position where the attaching / detaching unit is in the locked state and a release position where the releasing unit is in the released state. And an urging means (BB) for urging the operating portion to be positioned at the release position, and the activating portion urges the urging means when the battery is not accommodated. Thus, when the battery is accommodated in the release position, the battery may be moved so as to move to the lock position as the battery is accommodated. In this case, the lock state of the attaching / detaching unit can be switched using the operation of the operating unit.

  Any type of operation unit may be used. For example, in an aspect in which the operation unit of the present invention is used, the pen has an axis (Ax) as the pen, and the attachment / detachment unit is operated by an operation in the axial direction and an operation in the rotation direction (RH) about the axis. Is used, and the operating portion prevents at least one of the axial movement and the rotational movement of the attaching / detaching portion at the locked position, and releases the blocking at the releasing position. By operating as described above, the lock state of the detachable portion may be switched. In this aspect, the operating unit may lock the detachable unit in any way. For example, in one aspect of the pen locking mechanism of the present invention, the main body is provided with an attachment portion (TT) to which the attachment / detachment portion is attached / detached, and the attachment portion is attached to the attachment / detachment portion to the pen. A blocking portion (TM) is provided that prevents the movement of the attachment / detachment portion in the axial direction or the rotation direction, and the movement portion is provided at the locking position. Maintains the state in which the one operation is blocked, blocks the other operation with respect to the one operation, and can block the one operation of the blocking portion at the release position, and The lock state of the detachable part may be switched by operating so as to release the blocking of the operation.

  Moreover, in the aspect in which the prevention part was provided in the attachment part, the thing of what kind of aspect may be provided as a prevention part. For example, in one aspect of the pen locking mechanism of the present invention, the attachment / detachment portion is formed such that an inner wall (NP) is retracted in the axial direction, and the attachment / detachment portion is attached to the attachment portion. A large inner diameter portion (SS) that overlaps with the attachment portion, and the large inner diameter portion is provided with a convex portion (TP) on the wall surface (NP) so as to protrude from the wall surface in the normal direction. The part is provided with a concave part (SR) that is formed to correspond to the convex part as the blocking part and allows the convex part to enter, and the concave part is operated in the axial direction of the detachable part. The first concave portion (SR1) formed so as to correspond to the movement path of the convex portion accompanying the movement, and the movement path of the convex portion accompanying the movement of the attachment / detachment portion in the rotation direction. A second recess (SR2), and the attachment and detachment Is formed so that the convex portion and the second concave portion are engaged with each other to prevent movement of the convex portion in the axial direction. By operating to prevent the convex portion from moving in the rotational direction so that the convex portion does not move to the first concave portion at the position, and to release the prevention of rotational movement of the convex portion at the release position, The lock state of the detachable part may be switched.

  In the aspect in which the concave portion is used as the blocking portion, the concave portion may be formed in any manner. For example, in one aspect of the locking mechanism for a pen according to the present invention, the first recess is formed by retreating an end of the attachment portion in the axial direction so as to extend in the axial direction, and the second recess is The wall surface of the axial recess portion that is connected to the first recess portion and extends in the rotational direction is formed to recede in the rotational direction, and the wall surface of the second recess portion is used as the blocking portion. A claw portion (TM) that extends in the rotational direction so as to form and prevents movement of the convex portion in the axial direction in a state where the convex portion enters the second concave portion may be used.

  Further, in the aspect in which the concave portion is used as the blocking portion, the operating portion may lock the movement in the rotational direction in any way. For example, in one aspect of the pen locking mechanism of the present invention, the large inner diameter portion is formed so as to be retracted in the axial direction, and the retracting portion (TC) into which the operating portion can enter at the locking position. The retraction part is formed to prevent the movement of the attachment / detachment part relative to the attachment part in the rotation direction by preventing the movement part from moving in the rotation direction. The detachable portion may be switched to the locked state by operating so as to be positioned at the retracting portion in the locked position.

  In the aspect in which the evacuation unit is provided, any evacuation unit may be used. For example, in one aspect of the locking mechanism for a pen of the present invention, the retracting portion is formed so that the operating portion can enter at the release position, and movement of the operating portion in the rotational direction is within a predetermined range (M). The first retracting part (TC1) allowing the movement of the attaching / detaching part with respect to the mounting part in the rotation direction within the predetermined range, and the first retracting part. A second retracting portion (TC2) extending in the axial direction and allowing the operation portion to enter corresponding to the operation from the release position to the lock position, wherein the second retraction portion is the operation portion The movement part is formed so as to prevent the movement of the attachment / detachment part relative to the attachment part in the rotation direction, and the operation part is attached to the attachment part. sometimes, Located in the second saving unit in serial locking position, by operating so as to be positioned in the first retracted portion in said release position, may switch the locked state of the detachable unit.

  Moreover, in the aspect in which the switching unit includes the operation unit, the operation unit may operate in any manner. For example, in one aspect of the pen locking mechanism of the present invention, the operating unit may switch the state of the detachable unit by operating in the axial direction between the lock position and the release position.

  The detachable part and the battery housing part may be provided anywhere on the pen. For example, in one aspect of the pen locking mechanism of the present invention, the attachment / detachment portion may be provided on the tip end side of the pen, and the battery housing portion may be provided on the rear end side of the pen.

  In addition, the electronic blackboard device of the present invention includes a pen to which the above-described pen lock mechanism is applied. Thereby, the battery blackboard apparatus using the pen which can switch the lock state of the detachable part which is another part in conjunction with the accommodation of the battery can be realized.

  In addition, in the above description, in order to make an understanding of this invention easy, the reference sign of the accompanying drawing was attached in parenthesis, but this invention is not limited to the form of illustration by it.

  As described above, according to the present invention, when the battery is accommodated in the battery accommodating portion, the state of the detachable portion is in the locked state, and when the battery is not accommodated, the state of the detachable portion is released. Each can be switched to a state. For this reason, in conjunction with the storage of the battery, the lock state of the detachable part, which is another part, can be switched.

The perspective view of the principal part of the electronic blackboard apparatus containing the pen to which the locking mechanism which concerns on one form of this invention was applied. The front view of a coin detection apparatus. Enlarged view of the pen. Sectional drawing regarding the BB line of FIG. 3A. The perspective view of the pen of the state from which the battery was taken out. Sectional drawing regarding the VV line | wire of FIG. FIG. 6 is a partially enlarged view of FIG. 5. The perspective view which shows the pen of the state from which the pen tip part was removed. The enlarged view which expanded the part of the pen point part of FIG. The perspective view which shows the structure inside a pen point part. The principal part expanded view which extracted and extracted the principal part of the nib part. Sectional drawing regarding the XX line of FIG. Schematic of the control system of an electronic blackboard apparatus.

  Hereinafter, an electronic blackboard device including a pen to which a lock mechanism according to an embodiment of the present invention is applied will be described with reference to the drawings. FIG. 1 is a perspective view of a main part of the electronic blackboard device 1. As shown in FIG. 1, the electronic blackboard device 1 includes an electronic blackboard unit 2 and a coin detection device 3. The coin detection device 3 is provided on the right side of the electronic blackboard unit 2.

  FIG. 2 is a front view of the coin detection device 3. As shown in FIG. 2, a coin insertion slot 3 </ b> A for inserting coins to be paid as a consideration for using the electronic blackboard device 1 is provided on the front surface of the coin detection device 3. Further, a holder portion 3B is provided below the coin insertion slot 3A. A plurality of pens 4 are placed on the holder portion 3B. Note that the coin detection device 3 may be provided with various input devices and output devices provided in a normal electronic blackboard device such as a button for selecting or determining, a power switch, and a volume operation switch.

  FIG. 3A is an enlarged view of the pen 4. As shown in FIG. 3A, the pen 4 is formed in a substantially cylindrical shape, and a protruding portion 4 </ b> A is provided on the pen 4 on the axis Ax. Since the protrusion 4A is used in contact with the screen 6, a member with high wear resistance is used for the protrusion 4A so that the wear is prevented and the screen 6 is not damaged. For example, polyacetal, Teflon (registered trademark), nylon, or the like is used as a specific material of the protruding portion 4A. When a high wear-resistant material is obtained, an opaque material is selected as a result. On the other hand, the rear end of the pen 4 is provided with a large diameter portion 4C having a larger diameter than the others. Further, a battery cover portion 4 </ b> B is provided on the rear end side of the pen 4. The battery cover portion 4B is configured to be detachable from the pen 4, and the pen 4 is configured to be able to store a battery therein by removing the battery cover portion 4B.

  3B is a cross-sectional view taken along line BB in FIG. 3A. FIG. 3B shows a state where the battery 5 is stored. For this reason, as shown in FIG. 3B, the battery 5 is accommodated inside the pen 4 on the rear end side. The tip inside the pen 4 is closed by a transparent light guide lens 4G. In the center of the light guide lens 4G, a space in which the protrusion 4A is inserted is provided coaxially with the axis Ax. For example, a transparent acrylic material is used as the light guide lens 4G.

  The protruding portion 4A is attached to be movable in the front-rear direction, that is, the direction from the front end to the rear end (or the opposite direction) along the axis Ax through the central space of the light guide lens 4G. An interlocking member 4H is attached to the rear end of the protruding portion 4A, and a spring 4I that biases in the distal direction is attached to the interlocking member 4H. Further, the protrusion 4A is provided with a flange 4At around the rear end, and a step is provided in the diameter of the central space of the light guide lens 4G. The protrusion 4A is hooked on the step of the light guide lens 4G. Is configured to limit forward movement. For this reason, the protruding portion 4A is positioned so as to protrude from the tip at the normal time due to the biasing of the spring 4I via the interlocking member 4H and the restriction on the forward movement. As a result, when the protrusion 4A is pressed against the screen 6 or the like, the protrusion 4A moves in the rear end direction while compressing the spring 4I along the axis Ax via the interlocking member 4H due to the backward pressure. When the pressure is released, the spring 4I is biased via the interlocking member 4H so as to return to the position where it protrudes from the normal tip. An LED substrate 4D having a booster circuit is provided in front of the battery 5 and behind the protrusion 4A.

  The LED substrate 4D is provided with an infrared LED 4K and a visible light LED (color LED) 4M. The infrared LED 4K is disposed so as to be coaxial with the axis Ax, and the visible light LED 4M is disposed on a side near the infrared LED 4K. In addition, the visible light LED 4 </ b> M is provided in each pen 4 so that the component of the RGB value is different for each pen 4. The interlocking member 4H is configured to be movable in the front-rear direction along the axis Ax. When the protrusion 4A is pushed rearward and the interlocking member 4H moves rearward, another interlocking member (not shown) turns on and off a physical switch (not shown) mounted on the LED board 4D. By controlling the current from the battery 5, ON / OFF control of light emission of the infrared LED 4K and the visible light LED (color LED) 4M is performed. As described above, when the interlocking member 4H moves backward by a certain amount or more due to the pressure on the protrusion 4A, the LED board 4D causes the infrared LED 4K to emit infrared light and the visible light LED 4M to emit visible light due to the current from the battery 5. , Each is attached to output. At this time, the LED board 4D continues to output infrared rays while the infrared LED 4K outputs infrared rays while the interlocking member 4H is in a pressed state in which the interlocking member 4H has moved backward by a certain distance, while the visible light LED 4M is visible for a predetermined time from the pressed state. It is configured to output light. As the predetermined time, for example, about 1 second, or 3/60 frames / second of 1 second or less may be used depending on the processing speed or the like. On the other hand, when not in the pressed state, the LED substrate 4D is configured such that infrared rays are output from the infrared LED 4K at regular intervals. As an example of this fixed interval, for example, an infrared ray that is output once every four minutes may be used.

  The light output from each of the LEDs 4K and 4M passes through the transparent light guide lens 4G positioned around the front protrusion 4A and is output from the tip of the pen 4 to the outside. The infrared LED 4K is arranged coaxially with the axis Ax, and the protrusion 4A is also arranged coaxially with the axis Ax. For this reason, the infrared rays output to the outside are output so that the center position of the output range substantially coincides with the center position of the protrusion 4A. On the other hand, the position of the visible light LED 4M does not coincide with the axis Ax, but is close to the infrared LED 4K, the visible light output range output from the visible light LED 4M is a certain range from the center position of the infrared output range. Output to fit within.

  The LED substrate 4D is configured to be able to detect the remaining power that can be supplied by the battery 5 housed therein, that is, the remaining battery level. The LED board 4D is configured to control the infrared LED 4K so as to output infrared rays at regular intervals when not in the pressed state, and transmit the detected battery remaining amount information to the outside as an infrared signal. ing.

  FIG. 4 is a perspective view of the pen 4 with the battery removed. As shown in FIG. 4, the pen 4 includes a body part 4DB as a main body and a pen point part 4PS as an attaching / detaching part. The body portion 4DB is provided with a battery housing portion 4DS for housing the battery 5 inside the rear end. Further, the pen tip portion 4PS is configured to be detachable from the body portion 4DB in the direction of the axis AX. Further, the protruding portion 4A and the like which are easily consumed by contact with the screen 6 are provided in the pen tip portion 4PS.

  FIG. 5 is a cross-sectional view taken along the line VV in FIG. As shown in FIG. 5, an operation part AP extending in the axial direction is provided inside the body part 4DB. The rear end APK of the operation unit AP is provided so as to be located inside the battery housing unit 4DS. The operating part AP is biased toward the battery housing part 4DS by a spring BB as a biasing means. For this reason, when the battery 5 as shown in FIG. 5 is not accommodated in the battery accommodating part 4DS, the rear end APK of the operation part AP is located at a position that prevents accommodation of the battery 5. On the other hand, the tip APS of the operating part AP is provided so as to be positioned inside the pen point part 4PS in a state where the pen point part 4PS is mounted on the body part 4DB. That is, in the state where the pen tip portion 4PS is mounted on the body portion 4DB, the distal end APS of the operating portion AP is accommodated inside the pen tip portion 4PS. Further, the combination of the operating part AP and the spring BB functions as the switching part of the present invention.

  FIG. 6 is an enlarged view of a portion surrounded by a one-dot chain line VI in FIG. As shown in FIG. 6, an action portion accommodating portion SS as a large inner diameter portion that accommodates the tip APS of the action portion AP is formed inside the pen tip portion 4PS. The operation portion accommodating portion SS is formed on the rear end side of the pen tip portion 4PS so that the inner wall NP is retracted toward the front end side in the axis AX direction so that the front end APS can be accommodated. large. For this reason, the step part DS is formed in the inner wall NP at the boundary on the front end side of the operation part accommodating part SS. In addition, the operating portion accommodating portion SS is provided with a convex portion TP protruding in the normal direction toward the axis AX on the inner wall NP at the end on the body portion 4DB side. The convex portion TP engages with the body portion 4DB in a state where the pen tip portion 4PS is attached to the body portion 4DB. The body portion 4DB is provided with an attachment portion TT that is engaged with the convex portion TP of the operation portion accommodating portion SS and to which the pen tip portion 4PS is attached. The attachment portion TT is formed by retreating the inner wall ND of the body portion 4DB in the direction of the axis Ax so that the pen tip portion 4PS can be attached. The outer diameter of the attachment portion TT corresponds to the inner diameter of the operation portion accommodating portion SS located at the rear end of the pen tip portion 4PS. Further, the outer diameter of the attachment portion TT is overlapped with the inner wall NP of the operation portion accommodation portion SS by attaching the operation portion accommodation portion SS to form an outer diameter substantially the same as the outer diameter of the body portion 4DB. Is formed.

  FIG. 7 is a perspective view showing the pen 4 with the pen tip portion 4PS removed. The arrow in FIG. 7 indicates the rotation direction RH about the axis AX. Moreover, the broken line of the pen tip portion 4PS is an imaginary line showing the internal structure of the pen tip portion 4PS. The pen tip portion 4PS is attached to and detached from the body portion 4DB by a rotation operation in the rotation direction RH and a movement operation in the axis line Ax direction. At this time, the clockwise direction B of the rotation direction RH is used as the rotation direction RH at the time of attachment, and the counterclockwise direction A is used as the rotation direction RH at the time of removal. FIG. 8 is an enlarged view of the pen tip portion 4PS of FIG. As shown in FIG. 8, the attachment portion TT is provided with an entry path SR as a recess so that the projection TP of the operation portion accommodation portion SS can enter in accordance with the attachment / detachment operation of the pen tip portion 4PS. . The approach path SR is connected to the axial entry path SR1 as a first recess that allows the protrusion TP to enter in the axis Ax direction, and is allowed to enter the rotation direction RH of the protrusion TP. And a rotation direction approach path SR2 as a second recess. The axial entry path SR1 is formed as a recess whose end portion of the mounting portion TT is retracted in the axis Ax direction, and the rotational approach path SR2 is a recess in which the wall surface at the most retracted position of the axial entry path SR1 is retracted in the rotation direction RH. It is formed as. Further, the attachment portion TT is provided with a claw portion TM as a blocking portion extending in the rotation direction RH so as to form a wall surface of the rotation direction approach path SR2. For this reason, the width H of the claw portion TM in the rotation direction RH corresponds to the length of the rotation direction approach path SR2.

  On the other hand, a space portion KK extending at a predetermined length L in the axis Ax direction is formed at a position corresponding to the most retracted position (the root of the claw portion TM) of the rotation direction approach path SR2. The tip APS of the operating part AP is arranged so as to be located in the space part KK. For this reason, the tip APS of the operation part AP protrudes in the direction of the axis Ax from the attachment part TT, and is positioned so as to interfere with the step part DS formed on the inner wall NP of the operation part accommodation part SS. Further, the operating portion AP can move in the front-rear direction in the direction of the axis AX (the front end side corresponds to the front and the rear end side corresponds to the rear) within a range corresponding to the predetermined length L by the space portion KK. Further, as shown by an imaginary line in FIG. 8, the stepped portion DS can be attached and detached while avoiding interference between the stepped portion DS and the tip APS of the operating portion AP when the pen tip portion 4PS is attached or detached. As described above, a retracting part TC for retracting the tip APS of the operating part AP is provided. FIG. 9A is a perspective view showing an internal structure of the pen tip portion 4PS, and FIG. 9B is a main portion development view in which a main portion of the pen tip portion 4PS is taken out and developed in order to explain the retracting portion TC. 9B corresponds to the rotational direction RH, and the vertical direction corresponds to the axis Ax direction. Further, the right side of FIG. 9B is in the counterclockwise direction A of the rotational direction RH, the left side is in the clockwise direction B of the rotational direction RH, and the downward direction D in the axis Ax direction is on the tip side of the pen tip portion 4PS. The upward direction U corresponds to the rear end side of the pen tip portion 4PS.

  As shown in FIGS. 9A and 9B, the retracting portion TC has a part of the step portion DS in the axis Ax direction so that the tip APS of the operating portion AP can enter the step portion DS while avoiding interference. It is formed by retreating. The evacuation unit TC includes a first evacuation unit TC1 and a second evacuation unit TC2. The first retracting portion TC1 is formed to have a width M in the rotation direction RH as a predetermined range corresponding to the width H in the rotation direction RH of the claw portion TM. Further, the second retracting portion TC2 is further moved to the right side (counterclockwise direction) of the rotation direction RH of the first retracting portion TC1 by the stepped portion DS retreating further in the downward direction D in the axis Ax direction than the first retracting portion TC1. (A side) end. The depth T in the downward direction D of the second retreating part TC2 in the direction of the axis Ax corresponds to the predetermined length L of the space part KK. In other words, the second retracting part TC2 is formed so that the tip APS can be moved in accordance with a range in which the tip APS of the operating part AP can move back and forth in the direction of the axis Ax. Further, the width of the second retracting portion TC2 in the rotation direction RH is such that the stepped portion DS that forms the second retracting portion TC2 in the rotational direction RH of the tip APS in the state where the tip APS is disposed in the second retracting portion TC2. In order to limit the movement, the tip APS is formed so as to correspond to the width in the rotation direction RH. In addition, the convex portion TP has a rear end side in the axis Ax direction of the second retracting portion TC2, that is, the second retracting portion TC2 so that the position where the second retracting portion TC2 is formed corresponds to the position in the rotation direction RH. It is arranged on the upper direction U side.

  Returning to FIG. 1, a screen 6 as a display surface and a speaker 7 that outputs sound and is provided on the front surface of the electronic blackboard portion 2 are provided. Characters and the like are drawn on the screen 6 with the pen 4. Characters and the like drawn by the pen 4 are displayed on the screen 6 by being projected as images from the inside of the electronic blackboard unit 2. The screen 6 is configured such that an image projected from the inside is clearly displayed when a projection sheet is attached to the back surface of the transparent acrylic plate or is coated.

  10 is a cross-sectional view taken along line XX in FIG. As shown in FIG. 10, a projector 8, a color camera 9, and an IR camera 10 are provided inside the electronic blackboard unit 2. The projector 8 is disposed above the inside of the electronic blackboard unit 2. The spherical mirror 16 is ahead of the output direction in which the projector 8 outputs an image, the flat mirror 17 is ahead of the reflection direction in which the spherical mirror 16 reflects the image, and the reflection direction in which the flat mirror 17 reflects the image. Are each equipped with a screen 6. In FIG. 10, there are two projection lines TL indicating the output direction and range of the projector 8, a reflection line HL indicating the reflection direction and range of the spherical mirror 16, and a reflection line RL indicating the reflection direction and range of the flat mirror 17. Shown with a chain line.

  As shown in FIG. 10, the projector 8 is supported from below by being tilted upward so that the output direction of the image faces the spherical mirror 16 by a support base 15 attached to the upper part inside the electronic blackboard unit 2. ing. The spherical mirror 16 is disposed so as to be inclined so that the lower end of the spherical mirror 16 does not cross the reflection line RL of the flat mirror 17 and a part of the upper side protrudes from the inside of the electronic blackboard portion 2. A protruding cover portion 19 is provided so as to cover the spherical mirror 16 at a portion where a part of the spherical mirror 16 at the top of the electronic blackboard portion 2 protrudes. The spherical mirror 16 is configured to reflect an image output from the projector 8 in the reflection direction while slightly enlarging it. For this reason, the image output to the spherical mirror 16 is enlarged and reflected by the plane mirror 17. The plane mirror 17 is disposed on the base 20 having a certain height from the bottom so as to be inclined so that the image reflected from the spherical mirror 16 can be reflected on the entire screen 6. The images output from the projector 8 are projected on the entire surface of the screen 6 by these mirrors 16 and 17.

  The cameras 9 and 10 are arranged at positions close to each other above the upper end of the plane mirror 17. Specifically, the IR camera 10 is disposed above the plane mirror 17, and the color camera 9 is disposed at a position near the upper portion of the IR camera. In FIG. 10, the shooting range of the color camera 9 is indicated by a broken line CH, and the shooting range of the IR camera 10 is indicated by a one-dot chain line IS. As shown in FIG. 10, the cameras 9 and 10 are arranged at positions where the entire surface of the screen 6 is within the shooting ranges CH and IS. The color camera 9 is provided with an infrared cut filter 9A. Thereby, the color camera 9 is configured to be able to shoot an image obtained by cutting infrared rays (for example, to be able to shoot only visible light of 840 mm or less). On the other hand, the IR camera 10 is provided with a visible light cut filter 10A. Thereby, the IR camera 10 is configured to be able to shoot an image in which visible light is cut (for example, to be able to shoot only infrared rays of 920 mm or more). Furthermore, various devices such as a projector 8 and cameras 9 and 10 are connected inside the electronic blackboard unit 2 and a control unit for controlling them is provided.

  FIG. 11 is a schematic diagram of a control system of the electronic blackboard device 1. As shown in FIG. 11, the coin detection device 3, the cameras 9 and 10, the projector 8, and the speaker 7 are connected to the control unit 11 inside the electronic blackboard unit 2. In addition, various peripheral devices can be connected to the control unit 11, but their illustration is omitted.

  The control unit 11 is configured as a computer unit that combines a microprocessor and peripheral devices such as a main memory (RAM, ROM) necessary for its operation. The control unit 11 is provided with a control unit 21 and a storage unit 22. The control unit 21 is necessary for generating an image to be projected on the screen 6 through the projector 8 by appropriately reading the photographing results taken by the cameras 9 and 11 and various data stored in the storage unit 22. The apparatus is configured as a logical device that executes various calculations and generation of an audio reproduction signal to be reproduced through the speaker 7. The storage unit 22 is configured so as to be able to hold the memory even when power is not supplied. As the storage unit 22, for example, an optical storage medium such as a hard disk (magnetic disk), DVDROM, or CDROM, or an external storage device such as a nonvolatile semiconductor memory device such as an EEPROM may be used. The storage unit 22 stores a light spot database 25 and a color table 26 as data used by the control unit 21. The storage unit 22 stores various other data necessary for the control unit 21 to execute various processes, but the illustration is omitted.

  Next, with reference to FIGS. 5 to 9 again, the flow of attachment / detachment between the body portion 4DB of the pen 4 and the pen tip portion 4PS will be described. First, the flow when the pen tip portion 4PS is attached to the body portion 4DB will be described. As shown in FIG. 7, the pen tip portion 4PS is attached in a state where the battery 5 is taken out from the battery housing portion 4DS. Further, as shown in FIG. 8 in an enlarged manner, since the convex portion TP is provided inside the pen tip portion 4PS, when the pen tip portion 4PS is attached to the attachment portion TT, this convex portion TP. And the end portion of the attachment portion TT interfere with each other to prevent attachment. For this reason, the pen tip portion 4PS is attached in a state where the convex portion TP of the pen tip portion 4PS and the position of the axial direction approach path SR1 of the attachment portion TT are matched. In this state, when the pen tip portion 4PS is brought close to the body portion 4DB along the axis AX direction, the convex portion TP enters the axial direction entry path SR1, and interference with the end portion of the attachment portion TT is avoided.

  After the convex portion TP has entered the most receded position on the axial entry path SR1, the pen tip portion 4PS is rotated in the clockwise direction B in the rotational direction RH. Along with the rotation operation of the pen tip portion 4PS, the convex portion TP enters the rotational direction approach path SR2 connected to the axial direction approach path SR1. Then, the pen tip portion 4PS is rotated in the clockwise direction B until the convex portion TP is located at the most retracted position of the rotation direction approach path SR2. In a state where the convex portion TP enters the rotational direction approach path SR2, the movement of the convex portion TP in the axis Ax direction is restricted by the claw portion TM. That is, in the state where the convex portion TP enters the rotational direction approach path SR2, the convex portion TP and the claw portion TM interfere with each other, and the movement of the pen tip portion 4PS in the axis Ax direction is prevented.

  On the other hand, the front end portion APS of the operating portion AP that protrudes so as to interfere with the stepped portion DS of the pen tip portion 4PS is located in front of the end portion of the attachment portion TT of the body portion 4DB. However, while the convex portion TP is provided at a position corresponding to the second retracting portion TC2, the tip end portion APS is located at the most retracted position in the rotational direction approach path SR2. Further, the width M (see FIG. 9B) of the first retracting portion TC1 corresponds to the width H of the claw portion TM. For this reason, when the convex part TP is located at the most retracted position of the axial entry path SR1, the tip part APS is the left end part of the first retracting part TC1 (see FIG. 9B. The second retracting part TC2 is provided. As the convex portion TP enters the rotation direction entry path SR2 (the pen tip portion 4PS is rotated in the clockwise direction B), and the rotation direction RH It moves from the left end portion in the rotational direction RH to the right end portion along the first retracting portion TC1 having the width M. That is, the interference between the tip portion APS and the step portion DS is avoided by allowing the first retracting portion TC1 to enter the tip portion APS. Further, the position when the tip end portion APS of the operating portion AP is located at the first retracting portion TC1 corresponds to the release position of the present invention.

  Subsequently, the battery 5 is accommodated in the battery accommodating part 4DS of the body part 4DB. As shown in FIG. 5, the rear end APK of the operation unit AP extends to the battery storage unit 4DS and is positioned so as to prevent the battery 5 from being stored. For this reason, when the battery 5 is accommodated in the battery accommodating part 4DS, the rear end APK of the operation part AP is pushed by the battery 5 in the direction of the axis Ax. As a result, the operating portion AP moves forward (tip direction) in the direction of the axis Ax while compressing the spring BB. As shown in FIG. 8, the distal end portion APS of the operation portion AP is disposed in the space portion KK located in front of the end portion of the attachment portion TT, and therefore is pushed into the space portion KK by being pushed by the battery 5 from the rear. Can be moved forward.

  On the other hand, since the convex portion TP is arranged in the direction of the axis Ax corresponding to the second retracting portion TC2, in the state where the convex portion TP is located at the most retracted position in the rotational direction entrance path SR2, the tip portion APS. The position of corresponds to the position of the second retracting part TC2. Further, the second retracting portion TC2 is formed by further stepping back the step portion DS in the axis Ax direction from the first retracting portion TC1 so that a depth T corresponding to a predetermined length L is formed. For this reason, the front-end | tip part APS is not obstructed by the level | step-difference part DS, and the front-end | tip part APS can move ahead in the axis line Ax direction along 2nd evacuation part TC2. On the other hand, the width in the rotational direction RH of the second retracting portion TC2 corresponds to the width in the rotational direction RH of the tip end portion APS of the operating portion AP. For this reason, the tip portion APS that has entered the second retracting portion TC2 is prevented from moving in the rotational direction RH by the step portion DS that forms the second retracting portion TC2. Therefore, after the battery 5 is accommodated in the battery accommodating portion 4DS, the rotational movement in the rotational direction RH of the pen tip portion 4PS attached to the attachment portion TT is prevented by the tip APS and the step portion DS. For this reason, the convex part TP cannot move in the rotational direction RH from the position most retracted in the rotational direction approach path SR2. On the other hand, the movement in the direction of the axis Ax is prevented by the convex portion TP and the claw portion TM in a state where the convex portion TP is positioned on the rotation direction approach path SR2. Therefore, in a state where the pen tip portion 4PS cannot rotate, the pen tip portion 4PS cannot move in the direction of the axis Ax. Thereby, in a state where the battery 5 is accommodated in the battery accommodating portion 4DS, a locked state is formed in which the pen tip portion 4PS cannot be detached from the body portion 4DS. Further, the position when the tip end portion APS is positioned at the second retracting portion TC corresponds to the lock position.

  Next, a flow when the pen tip part 4PS is removed from the body part 4DB will be described. The detachment of the pen tip portion 4PS from the body portion 4DB is performed in the reverse flow of the flow at the time of attachment. Specifically, first, the battery 5 is taken out from the battery housing part 4DS. As a result, the compression of the spring BB that urges the operating part AP is released, so that the operating part AP moves backward so as to return to the original position by the urging of the spring BB. Corresponding to this movement, the tip end portion APS escapes from the second retracting portion TC2 and moves to the position of the first retracting portion TC1. For this reason, the restriction | limiting of the movement to the rotation direction RH of the pen tip part 4PS is cancelled | released.

  Subsequently, the pen tip portion 4PS is rotated in the counterclockwise direction A of the rotational direction RH so that the convex portion TP moves from the rotational direction approach path SR2 to the axial direction approach path SR1. If the convex part TP escapes from the rotational direction approach path SR2 and is positioned on the axial direction approach path SR1, it is released from interference by the claw part TM, and the restriction on the movement in the axis Ax direction is released. As a result, the state of the pen tip portion 4PS is released from the unlocked state, and the pen tip portion 4PS can be detached from the body portion 4DS.

  As described above, according to this embodiment, the operation of housing the battery 5 and the locking of the removal of the pen tip portion 4PS are interlocked, and in the state where the battery 5 is housed in the battery housing portion 4DS, the pen tip Part 4PS cannot be removed. When removing the pen tip portion 4PS, the battery 5 must first be taken out of the battery housing portion 4DS. That is, the lock state of the pen tip 4PS can be switched in conjunction with the storage of the battery 5. Thereby, the attachment / detachment of the pen tip portion 4PS can be reliably locked by a natural operation of housing the battery 5. For this reason. When the pen 4 is being used, the pen tip 4PS cannot be easily removed. Further, since the pen tip portion 4PS cannot be removed simply by rotating the pen tip portion 4PS or pulling in the direction of the axis Ax, loss due to removal of a child can be suppressed. On the other hand, the lock of the pen tip portion 4PS can be easily released by removing the battery 5, so that the pen tip portion 4PS can be easily removed when there is a need for replacement such as wear due to use. The protrusion 4A can be exchanged.

  The present invention is not limited to the form described above, and can be implemented in an appropriate form. In the above-described embodiment, the operation unit AP that operates in the direction of the axis Ax with the storage of the battery is used, but the operation unit AP is not limited to such a configuration. For example, the operating unit may be configured to operate the other end side via a fulcrum by operating the one end side as a power point in accordance with the storage of the battery. For this reason, the direction in which the operating unit operates may be, for example, the rotational direction about the fulcrum. That is, the direction in which the operating unit operates is not limited to the axial direction. Moreover, in the above-mentioned form, although the battery accommodating part is provided in the rear-end side of the pen, it is not limited to such a form. For example, depending on the shape of the battery, it may be provided near the center of the pen. Similarly, in the above-described embodiment, the pen tip portion positioned on the tip end side of the pen is used as a portion that is locked in conjunction with the storage of the battery. However, the present invention is not limited to such a configuration. . The part that is locked in conjunction with the storage of the battery may be provided in any part of the pen.

  Moreover, in the above-mentioned form, the prevention of the movement in the rotational direction and the prevention of the movement in the axial direction are realized by separate members, but it is not limited to such a form. For example, a convex part is formed in the operating part, and a concave part in which the convex part of the operating part fits is formed in the pen tip part, and the convex part of the operating part fits into the concave part of the pen tip part by storing the battery. It may be configured to prevent movement in both the rotational direction and the axial direction. Conversely, a concave portion may be formed in the operating portion, and a convex portion may be formed in the pen tip portion.

  In the above-described form, the protrusion TP is formed on the pen tip portion 4PS, and the concave portion corresponding to the convex portion is formed on the attachment portion, and the concave portion corresponding to the convex portion of the operating portion is the pen. Although each of the front portions 4PS is formed, as long as the corresponding convex portions and concave portions are respectively formed, the portions where the convex portions or the concave portions are provided may have an opposite relationship.

  Further, in the above-described embodiment, the axial entry portion as the first recess is formed to extend in the axial direction, and the rotational entry portion as the second recess is formed to extend in the rotation direction. Or as long as the approach of the convex part which moves with the movement of a rotation direction is accept | permitted, each recessed part is not limited to such a form. For example, the first concave portion may be formed in an oblique direction that guides the convex portion in an oblique direction with respect to the axial direction while rotating the attachment / detachment portion as the attachment / detachment portion moves in the axial direction. Similarly, the second concave portion may be formed so as to guide the convex portion in an oblique direction as the attaching / detaching portion moves in the rotational direction.

  Moreover, in the above-mentioned form, although the operation | movement part has entered into the retraction | saving part of an attachment / detachment part, and is operate | moving so that rotation of an attachment / detachment part may be prevented, it is not limited to such a form. For example, the mounting portion is formed with a concave portion extending in the axial direction, and the convex portion of the detachable portion enters the concave portion to prevent movement in the rotational direction, and the operating portion is in the locked position. It may operate to be positioned on the recess so as to prevent escape from the recess. That is, the operation part may be configured to prevent the movement of the attaching / detaching part by preventing the movement of the convex part.

  Moreover, in the above-mentioned form, although the operation | movement part is arrange | positioned so that it may protrude in a large internal diameter part in a cancellation | release position, it is not limited to the form arrange | positioned in this way. For example, the operating part is arranged in the release position so that it does not interfere with the attachment of the attachment / detachment part, such as being positioned below the attachment part even if the tip part protrudes to the inside of the attachment part or the large inner diameter part side. In addition, the tip portion may protrude from the attachment portion or the like only when moving to the lock position, enter the retracting portion or the like, and block each movement. In this case, the first retracting unit can be omitted.

  Moreover, in the above-mentioned form, although the operation | movement part which moves with storage of a battery is utilized for switching of a locked state, it is not limited to such a form. For example, it may be configured to switch between the locked state and the released state of the pen tip portion by switching ON / OFF of the magnetic force as the battery is stored.

1 Electronic Blackboard Device 4 Pen 4DB Body (Main Body)
4PS pen tip (detachable part)
4DS Battery compartment 5 Battery AP Operation part (switching part)
BB spring (biasing means, switching part)
TT Mounting part SS Moving part accommodating part (large inner diameter part)
TP Convex part SR Approach path (concave part)
SR1 Axis direction approach path (first recess)
SR2 Rotation direction approach path (second recess)
TC retracting part TC1 first retracting part TC2 second retracting part TM claw part (blocking part)
Ax axis RH Rotation direction

Claims (11)

It is applied to a pen comprising a detachable part that can be attached to and detached from the main body, and a battery accommodating part that accommodates a battery,
The battery housing unit includes a switching unit that switches a state of the attachment / detachment unit attached to the pen between a locked state in which attachment / detachment of the attachment / detachment unit is locked and a release state in which the attachment / detachment lock of the attachment / detachment unit is released. Provided,
When the battery is accommodated in the battery accommodating part, the switching part is in the locked state, and when the battery is not accommodated in the battery accommodating part, the switching part is in the released state, respectively. A locking mechanism for pens, characterized by switching. The switching unit is configured to operate an operation unit that operates between a lock position that puts the attachment / detachment unit in the locked state and a release position that uses the release state, and biases the operation unit to be located at the release position. Power means,
When the battery is not accommodated, the operating portion is moved to the release position by the urging force of the urging means, and when the battery is accommodated, the operation portion is moved to the locked position along with the battery retracting operation. The locking mechanism for a pen according to claim 1, wherein each of the locking mechanisms operates to move. As the pen, the pen has an axis, and the attachment / detachment part is used by the operation in the axial direction and the operation in the rotation direction around the axis,
The operation unit is configured to prevent at least one of the axial operation and the rotation direction operation of the attachment / detachment unit at the lock position, and operate so as to release the block at the release position. The pen locking mechanism according to claim 2, wherein the locking state of the detachable portion is switched. The main body is provided with an attachment portion to which the attachment / detachment portion is attached / detached,
The attachment portion is provided with a blocking portion that prevents the movement of the attachment / detachment portion in the axial direction or the rotation direction in a state where the attachment / detachment portion is attached to the pen,
The operation unit maintains the state in which the blocking unit blocks the one operation at the locked position and blocks the other operation with respect to the one operation, and the one of the blocking units at the release position. The pen locking mechanism according to claim 3, wherein the lock state of the attaching / detaching portion is switched by operating so as to cancel the blocking of the other operation and the blocking of the other operation. The detachable portion is formed such that the inner wall is retracted in the axial direction, and in the state where the detachable portion is attached to the attachment portion, a large inner diameter portion that overlaps the attachment portion is provided,
The large inner diameter portion is provided with a convex portion on the wall surface so as to protrude in the normal direction from the wall surface,
The mounting portion is provided with a concave portion that is formed to correspond to the convex portion as the blocking portion and allows the convex portion to enter,
The concave portion includes a first concave portion formed so as to correspond to a movement path of the convex portion accompanying the movement of the detachable portion in the axial direction, and the convex portion accompanying the movement of the detachable portion in the rotational direction. A second recess formed so as to correspond to the movement path of the projection, and in a state where the attachment / detachment portion is attached to the attachment portion, the projection and the second recess engage with each other, and the projection Formed so as to prevent the axial movement of the part,
The operating portion prevents the convex portion from moving in the rotational direction so that the convex portion does not move to the first concave portion at the lock position, and cancels the rotational movement of the convex portion at the release position. The pen locking mechanism according to claim 4, wherein the locking state of the attaching / detaching portion is switched by operating in the same manner. The first recess is formed by retreating an end of the attachment portion in the axial direction so as to extend in the axial direction,
The second recess is connected to the first recess, and the wall surface at the most receded position of the axial recess is formed to recede in the rotational direction so as to extend in the rotational direction,
A claw that extends in the rotational direction as the blocking portion so as to form a wall surface of the second recess and blocks the movement of the protruding portion in the axial direction when the protruding portion enters the second recess. The locking mechanism for a pen according to claim 5, wherein the portion is used. The large inner diameter portion is formed so as to retreat in the axial direction, and is provided with a retracting portion into which the operating portion can enter at the lock position,
The retracting part is formed so as to prevent movement of the attaching / detaching part relative to the attaching part in the rotating direction by preventing movement of the operating part in the rotating direction,
The lock mechanism for a pen according to claim 6, wherein the operation unit is operated so as to be positioned at the retracting unit at the lock position, thereby switching the attachment / detachment unit to a locked state. The retracting portion is formed so that the operating portion can enter at the release position, and allows the operating portion to move in the rotating direction within a predetermined range, thereby allowing the predetermined range of the attaching / detaching portion to the mounting portion. A first retracting portion that allows movement in the rotational direction, and is connected to the first retracting portion, extends in the axial direction from the first retracting portion, and corresponds to an operation from the release position to the lock position. A second retracting portion that allows the operation portion to enter, and the second retracting portion prevents the operation portion from moving in the rotation direction, whereby the attachment / detachment portion moves in the rotation direction. Is formed to prevent
The operating portion operates such that when the detachable portion is attached to the attaching portion, the operating portion is located at the second retracting portion at the lock position and is located at the first retracting portion at the release position. The pen locking mechanism according to claim 7, wherein the locking state of the attaching / detaching portion is switched.   The lock mechanism for a pen according to any one of claims 3 to 7, wherein the operation unit switches the state of the attachment / detachment unit by operating in an axial direction between the lock position and the release position.   The lock mechanism for a pen according to any one of claims 1 to 8, wherein the detachable portion is provided on a tip end side of the pen and the battery housing portion is provided on a rear end side of the pen.   The electronic blackboard apparatus provided with the pen to which the lock mechanism for pens as described in any one of Claims 1-10 was applied.

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