JP5202654B2 - Sensor unit operation mechanism - Google Patents

Description

The present invention relates to a sensor unit operating mechanism that moves a sensor unit, to which a photosensor used for measurement of brightness, chromaticity, etc., of a display screen of a display device is attached to a display screen measurement position.

Display devices are used not only in offices and homes, but also in various professional fields such as graphic design and medical care. In particular, display of graphic design images and medical diagnostic images requires high-precision image quality with high reproducibility. For example, high-end class liquid crystal panels are used, and in recent years, such liquid crystal panels have been adopted. In the display device, the optical characteristics such as the brightness, chromaticity, and light quantity of the liquid crystal display screen are measured by the optical sensor, and the display image is reproducible by performing calibration based on the obtained measurement data. Efforts are being made.

In FIG. 16, in order to improve the reproducibility of the display image, it is necessary to perform calibration at a predetermined cycle. Therefore, a sensor unit operating mechanism for measuring the optical characteristics of the liquid crystal display screen at a predetermined cycle is provided as a display device. (Patent Document 1).

In Patent Document 1, a photometric device 204 is disposed so as to be movable at one of four corners of a liquid crystal display device 200 including a square liquid crystal display screen 201 and a bezel 202 surrounding the periphery (see FIG. 16). Here, the photometric device 204 is a plate-like unit with a built-in optical sensor, and is hereinafter referred to as a sensor unit. The sensor unit described in Patent Document 1 moves to the front of the liquid crystal display device at the time of photometry. When photometry is completed, the sensor unit rotates in the direction of the arrow in the drawing while drawing a circle around the corner of the liquid crystal display screen. Stored in

In Patent Document 1, photometry can be performed without human intervention, and the liquid crystal display screen is automatically displayed only when photometry is performed, except that the liquid crystal surface is not shielded except for photometry. On the other hand, the photometric device is attached to a base metal plate around the display panel (liquid crystal display screen) surrounded by the frame in the display device, and depends on the thickness of the frame and the thickness of the display device bezel around the liquid crystal panel. When a photometric measurement is performed, a step is generated between the display panel and the sensor unit is only rotated from the position where the sensor unit is stored to the measurement position of the liquid crystal panel. There is a problem affected by ambient light. In addition, when the sensor unit rotates and crosses the step, the optical sensor attached to the tip of the sensor unit has a step (such as a frame around the liquid crystal panel or a vessel around the display panel). There is a problem of getting caught and hurting. Furthermore, since the size of the sensor unit is large, there is a bezel design restriction that the size of the bezel must be increased in order to fit within the bezel of the display device.

Japanese Patent No. 3984996

In display devices that display graphic design images, medical diagnostic images, etc., optical characteristics such as brightness and chromaticity of the display screen are used during calibration to meet the demand for highly reproducible and high-precision image quality. Therefore, it is required to accurately measure the optical sensor in a state where it is difficult to be affected by external light. On the other hand, for display devices, there is a high demand for functionality and design such as the size and visibility of the displayed image, and the size and width of the frame of the bezel and display panel are determined by the sensor. There is a desire to be unconstrained by an optical measuring instrument equipped with a unit operating mechanism.

Therefore, an object of the present invention is to measure the optical characteristics of the display screen in a state where it is not easily affected by ambient external light, and to have a mechanism for retracting the sensor unit from the display screen after the measurement. It is an object of the present invention to provide a sensor unit operating mechanism for an optical measuring instrument that can be used regardless of the size of the panel frame, such as the width and thickness.

In the sensor unit operating mechanism according to the first invention, an optical sensor used for measuring luminance, chromaticity, etc. of the display surface of the display device is disposed at one end, and a shaft for rotatably supporting the optical sensor is disposed at the other end. In a sensor unit operating mechanism that moves the sensor unit from the storage position of the optical measuring device main body to the measurement position of the display surface during measurement, and moves from the measurement position to the storage position after measurement, the sensor unit is stored in the storage unit. The optical sensor is rotated from a position to the measurement position and advanced from the middle of the rotation to bring the optical sensor into close contact with or close to the display screen.

The sensor unit operating mechanism according to a second aspect of the present invention is characterized in that, in the first aspect, the timing of advancement from the middle of the rotation is performed after the sensor unit exceeds the frame of the display panel.

According to a third aspect of the present invention, there is provided the sensor unit operating mechanism according to the first aspect, wherein the timing of advancement from the middle of the rotation is performed after the sensor unit exceeds the bezel of the display device.

A sensor unit operating mechanism according to a fourth aspect of the present invention is the sensor unit operating mechanism according to the first to third aspects of the present invention, wherein the first follower is fixed to the optical measuring device main body side and rotates the shaft; A drive transmission mechanism for driving the follower, a second follower fixed to the shaft, and a cam fixed to the optical measuring device main body side and slidably contacting the second follower to advance the shaft. It is characterized by.

According to the present invention, the sensor unit is combined with the rotation operation and the back-and-forth motion operation, and the rotation and the back-and-forth motion are performed at different timings according to the structure around the display panel, that is, the back-and-forth operation. Is performed after exceeding the frame of the display panel or the bezel of the display device M in the middle of the rotation operation. As a result, the optical measuring instrument can accurately measure the sensor unit in a state in which it is not easily affected by ambient light without being damaged by being caught by the frame of the display panel by the rotation operation. Also, regardless of the size of the frame of the bezel or display panel, such as the width and thickness, the sensor unit (light sensor) is placed close to the screen to be measured when measuring the optical characteristics, and after the measurement, it is outside the display area of the screen to be measured. It is possible to retract the sensor unit. For this reason, the optical measuring device according to the present invention can be used regardless of the size of the bezel of the display device and the frame pair of the display panel, such as the width and thickness. Since the optical sensor comes close to the screen to be measured due to the rotation operation and the back-and-forth operation of the sensor unit (because the distance from the screen to be measured is not opened excessively), the optical sensor can be provided without an expensive optical lens. Becomes less susceptible to ambient light and enables accurate measurement.

It is a perspective view which shows the display apparatus with which the optical measuring device provided with the sensor unit operation mechanism based on this invention was incorporated. It is a front view which shows the optical measuring device which concerns on FIG. It is a disassembled perspective view of the display part of the display apparatus which concerns on FIG. It is ZZ 'sectional drawing from the side surface which shows the arrangement | positioning relationship between the optical measuring device which concerns on FIG. 1, and a display part, (a) has shown the state before advancing a sensor unit, or the state retracted | retreated. (B) has shown the state which advanced the sensor unit. It is a perspective view which shows the measurement state of the sensor unit of the optical measuring device which concerns on FIG. It is a disassembled perspective view of the optical measuring device which concerns on FIG. It is a figure which illustrates a part of 1st cam follower and cam which concern on FIG. It is a top view which shows operation | movement of the sensor unit operation mechanism which concerns on this invention, (a) is a figure which shows the relationship between a follower in the state which accommodated the sensor unit, a cam, and a coil spring, (b) is a follower in advance, It is a figure which shows the relationship between a cam and a coil spring, (c) is a figure which shows the relationship between a follower after advancing a sensor unit, a cam, and a coil spring. It is a figure which illustrates the gear with a pin used for the sensor unit operation mechanism concerning the present invention, (a) is a figure seen from the top, (b) is a figure seen from the side. It is a figure which illustrates the gear follower used for the sensor unit operation mechanism which concerns on this invention, (a) is the figure seen from the top, (b) is the figure seen from the side. It is a figure which illustrates the state which combined the gear with a pin and gear follower which are used for the sensor unit action mechanism concerning the present invention, (a) is a figure seen from the top, (b) is a figure seen from the side. . It is a top view which shows operation | movement of the sensor unit operation mechanism which concerns on this invention, and shows the state which stored the sensor unit. It is a top view which shows operation | movement of the sensor unit operation mechanism which concerns on this invention, and shows the state of the rotation initial stage of a sensor unit. It is a top view which shows operation | movement of the sensor unit operation mechanism which concerns on this invention, and shows the state which begins to advance a sensor unit with rotation. It is a top view which shows operation | movement of the sensor unit operation mechanism which concerns on this invention, and shows the state which advanced the sensor unit with rotation. It is a perspective view which shows the arrangement configuration of the conventional sensor unit operation mechanism.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a display apparatus M in which an optical measuring instrument 1 having a sensor unit operating mechanism of the present invention is incorporated. FIG. 2 is a front view showing the optical measuring device 1. FIG. 3 is an exploded perspective view of the display unit 10 of the display device M. FIG. FIG. 4 is a cross-sectional view taken along the line ZZ ′ showing the positional relationship between the optical measuring instrument 1 and the display panel 101, and (a) is a state before the sensor unit 3 is moved forward or a state where the sensor unit 3 is moved backward. (B) shows a state in which the sensor unit 3 is moved forward. In FIG. 4, the base metal plate 103 in FIG. 3 is omitted. FIG. 5 is a perspective view showing a measurement state of the sensor unit of the optical measuring device.

The optical measuring instrument 1 of the present embodiment is composed of an optical measuring instrument main body 2 and a plate-shaped sensor unit 3 (FIG. 2), and the sensor unit 3 is housed in the optical measuring instrument main body 2 in the display device M. It is attached at position A in the bezel 100a. When performing calibration (calibration), the sensor unit 3 rotates from the A position to the B position as shown in FIG. 1 and rotates from the B position to the C position while being measured (liquid crystal display screen) 101a. Move forward to approach. When calibration is completed at the measurement position, the sensor unit 3 moves backward from the screen 101a to be measured while rotating from the C position to the B position in the reverse operation to the above, and from the B position to the A position, It is stored by rotating only. The A position is also referred to as a storage position, the B position is also referred to as a forward start position, and the C position is also referred to as a measurement position. Here, the advance start position (position B) is a position where the sensor unit 3 exceeds the lateral width T5 of the bezel 100a of the display unit 10 or the lateral width T6 of the frame body 101b of the display panel 101 shown in FIG. The rotation angle of the sensor unit 3 from the storage position (A position) to the measurement position (C position) is set to 90 degrees.

In addition, the installation location of the optical measuring device 1 is not limited to the said embodiment. For example, the optical measuring instrument 1 may be attached to either the upper part or the side part of the liquid crystal panel. Moreover, you may attach to the outer periphery of the display apparatus M so that attachment or detachment is possible.

As shown in FIG. 3, the optical measuring instrument 1 has a back surface of the optical measuring instrument main body 2, as shown in FIG. 3, a front cover 100, a display panel 101, a base sheet metal 103, and a back cover (not shown). The sensor unit 3 is rotatably attached to a central portion of the bottom surface of the base metal plate 103 with a screw. The display panel 101 is, for example, a liquid crystal display panel, and includes a screen to be measured (liquid crystal display screen) 101a and a frame body 101b that reinforces the periphery of the screen, and T1 between the screen 101a to be measured due to the thickness of the frame body 101b. Is formed. The sensor unit 3 starts to rotate from the storage position (A position) during calibration by a sensor unit operating mechanism, which will be described later, and is measured from a point beyond the upper surface of the frame body 101b1 (advance start position (B position)). It moves to the position (C position) and moves forward to approach the screen to be measured 101a.

The optical measuring instrument 1 is for improving the reproducibility of a display image by calibrating the display unit 101 at a predetermined cycle. As shown in FIG. An optical sensor 8 is built in an arrangement facing the liquid crystal display screen) 101a (the side far from the measuring instrument body 2 is the tip side). The optical sensor 8 is a sensor that measures optical characteristics such as luminance, chromaticity, and light amount of the liquid crystal display screen 101a.

On the back side (surface facing the screen to be measured 101 a) 3 a of the sensor unit 3, a light shielding member 4 protruding so as to surround the built-in optical sensor 8 is disposed. The light shielding member 4 has a hollow rectangular shape on the front surface of the optical sensor 8, and serves as a damper that prevents the back side 3a of the sensor unit 3 from directly contacting the screen 101a to be measured when the sensor unit 3 moves forward. And a function of blocking outside light that may be hung from the gap between the optical sensor 8 and the screen 101a to be measured. The light shielding member 4 is a sponge foam having a black cushioning property, and a material such as urethane is appropriately used.

In the embodiment, the thickness T2 (see FIG. 4-b) of the light shielding member 4 is the thickness T1 of the frame body 101b of the display panel 101 arranged around the screen 101a to be measured (see FIG. 1, FIG. 4-a). The thickness is set to be approximately the same as or larger than that. Further, the amount of forward and backward movement of the sensor unit 3 to the screen 101a to be measured is set to be slightly larger than the thickness T1 of the frame body 101b of the display panel 101 in consideration of the thickness of the base sheet metal 103 and the like. . Then, the sensor unit 3 is rotated from the storage position (position A) by a sensor unit operating mechanism, which will be described later, and exceeds the horizontal width T6 of the frame body 101b or the horizontal width T5 of the bezel 100a of the display device M, and then the screen to be measured. The forward movement approaching 101a starts (B position). With this setting, when the sensor unit 3 is rotated, the tip of the light shielding member 4 is not in contact with the upper surface of the frame body 101b of the display panel 101 and is covered when it reaches the measurement position. Can be close to or in close contact with the measurement screen 101a. In addition, since the light shielding member 4 is a material having a cushioning property, even if it contacts the screen 101a to be measured, the light shielding member 4 may not be damaged and may be adhered. Therefore, the optical sensor 8 is not affected by ambient light due to the thickness T1 of the frame 101b without being damaged by the sensor unit 3 being caught on the frame 101b of the display panel 101 by the rotation operation. The sensor unit mechanism can be provided.

As shown in FIG. 5, a long hole 100a2 is provided in the bezel 100a as an outlet through which the sensor unit 3 built in the bezel 100a of the display device M protrudes from the bezel 100a as it rotates, and dust does not enter. Thus, a lid 100b supported on both sides by a spring is attached. Here, the distance T3 between the inner side of the long hole 100a2 and the screen 101a to be measured is set equal to the amount of forward and backward movement. At the time of calibration, the sensor unit 3 rotates from the storage position (A position), pushes up the lid 100b through the long hole 100a2 and protrudes to the screen 101a to be measured, and the sensor unit 3 is the frame of the display panel 101. The measurement position (C position) at a position (advance start position (B position)) beyond the lateral width T6 (see FIG. 3) of the upper surface of 101b or the lateral width T5 (see FIG. 1) of the bezel 100a of the display device M ), Moving forward toward the screen to be measured (liquid crystal display screen) 101a.

The rotation distance from the storage position (A position) to the advance start position (B position) of the sensor unit 3 is the horizontal width T6 of the frame 101b of the display panel or the horizontal width T5 of the bezel 100a of the display device M. That is, it is the movement distance exceeding these lateral widths. When calibration is completed and the sensor unit 3 is stored, all operations are reversed, that is, a backward movement remote from the measured position (C position) to the measured screen 101a while rotating from the measured position (C position). It is stored in the storage position (A position) by rotating only from the forward start position (B position).

FIG. 6 is an exploded perspective view of the optical measuring device 1 of the present embodiment. FIG. 7 is a plan view showing the structure of a follower and a cam for moving the shaft 5 back and forth. FIG. 9 is a plan view showing the forward movement of the sensor unit operating mechanism. FIG. 9A is a view showing the movement of the follower, the cam and the coil spring to be advanced in the state where the sensor unit is housed, and FIG. It is a figure which shows operation | movement of the follower, the cam, and the coil spring to advance in the state of an advance advance, (c) is a figure which shows operation | movement of the follower, cam, and coil spring to advance in the state which advanced the sensor unit.

The sensor unit 3 and the optical measuring device main body 2 are connected by a shaft 5. With reference to FIG. 6, the structure of the optical measuring device main body 2 is demonstrated. The optical measuring device main body 2 includes a second follower 19 for moving the shaft 5 back and forth (advancing and retreating), a cam 17b (which is formed integrally with the support member 17 to be described later), a rotating lever 15 and a support member for the shaft 5. 17, a coil spring 72 that is inserted into the tip of the shaft 5 and fixed by an E-ring 75 and serves as a driving force for moving the shaft 5 back and forth, a first follower (gear follower) 11 that rotates the shaft 5, and a first follower 11, gear mechanism 61, 62, 63, etc. interlocked with 11, drive motor 6 that drives gear mechanism 61, 62, 63, etc., movable clamp 13 that is mounted coaxially with first follower 11, and optical sensor 8 And a signal processing circuit that performs signal processing upon receiving the electrical signal and a control circuit that drives and controls the drive motor 6. The circuit board is provided with a connector for transmitting and receiving electrical signals between the optical measuring instrument 1 and a personal computer or the like.

The shaft 5 is made of metal and has a thin portion and a thick portion having a flat surface. At one end of the thick part of the shaft 5, the sensor unit 3 and the second follower 19 are fixed to the front side of the sensor unit 3 with screws 18, so that the sensor unit 3 and the second follower 19 rotate integrally with the shaft 5. It is possible to move back and forth. The other end of the shaft 5 is inserted into a support member 17 fixed to the optical measuring device main body 2, and is supported by the support member 17 so as to be rotatable.

The support member 17 is made of plastic and includes a storage portion 17a, a cam 17b, and a stop plate 17c, and is fixed to the optical measuring device main body 2 with screws. The accommodating portion 17a is located between the stop plate 17c and the cam 17b, and accommodates the rotating lever 15 through which the shaft 5 is penetrated. The stop plate 17c is formed with a through-hole for passing through a thin portion of the shaft 5 and freely rotating, and also prevents the turning lever 15 from moving back and forth as the shaft 5 moves forward and backward. Further, a washer 73 is applied to the outer surface of the stop plate 17c.

The rotating lever 15 is a member for rotating the shaft 5 and includes a cylindrical body 151 and a knob member 152 attached in a direction away from the central axis of the cylindrical body 151 toward the outside. A rectangular through-hole having a lateral width equal to the outer diameter of the thick portion of the shaft 5 is formed in the cylindrical body 151 of the rotating lever 15. Thus, when the shaft 5 is rotated, the rotation lever 15 grips and rotates the shaft 5, and when the shaft 5 is moved forward and backward, the rotation lever 15 passes the shaft 5. ing.

By rotating the knob member 152 of the rotating lever 15, the shaft 5 rotates (in FIG. 6, it rotates in the left-right direction), and the knob member 152 of the rotating lever 15 moves on the upper surface 17 d 1 on the left side of the support member 17. The rotation start position of the shaft 5 is determined by contacting the corner, and the rotation end position of the shaft 5 is determined by the contact of the knob member 152 of the rotation lever 15 with the corner of the right upper surface 17d2 of the support member 17. To do.

The cam 17b integrally formed with the support member 17 is a 1/2 cylinder, a hole through which the shaft 5 passes through the center of the cylinder, and a first locking surface 17b1 at the upper part of the outer periphery as shown in FIG. And an end face cam that forms a second locking surface 17b2 at a lower portion and a slope 17b3 having a height T4 between the first locking surface 17b1 and the second locking surface 17b2. The height T4 of the slope 17b3 is equal to the amount of movement of the shaft 5 in the longitudinal direction, that is, determines the amount of movement of the sensor unit 3 in the longitudinal direction.

The second follower 19 is formed with a cylindrical base portion 19b having a hole through which the shaft 5 passes, and a fan-shaped protrusion 19a having a thickness larger than that of the cylindrical base portion 19b on the outer periphery thereof. The fan-shaped protrusion 19a is formed with an arc-shaped sliding surface 19a1 and a locking surface 19a2. Here, the thickness T7 of the protrusion 19a is set equal to the height T4 of the inclined surface 17b3 of the cam 17b, and the arc length T8 of the protrusion 19a is the length of the second locking surface 17b2 of the cam 17b. It is set the same as T9. The second follower 19 rotates and moves back and forth together with the penetrating shaft 5.

As shown in FIG. 7 and FIG. 8A, when the sensor unit 3 is housed (position A), the locking surface 19a2 of the second follower 19 and the first locking surface 17b1 of the cam 17b come into contact with each other. The shaft 5 rotates when performing the calibration. The locking surface 19a2 of the second follower 19 that rotates integrally with the shaft 5 rotates along the first locking surface 17b1 of the cam 17b, and the sensor unit 3 that rotates integrally with the shaft 5 is also provided. It is rotated to the advance start position (B position). The rotation of the sensor unit 3 exceeds the horizontal width T6 of the frame body 101b around the screen 101a to be measured or the horizontal width T5 of the bezel 100a of the display device M (position B) (see FIGS. 1 and 3). The sliding portion 19a3 of the second cam follower drops from the first locking surface 17b1 (see FIG. 8B), arrives at the slope 17b3 of the cam 17b, and reaches the slope 17b3 of the cam 17b along the second locking surface of the cam 17b. It is in sliding contact until it completely contacts 17b2. In the close contact state, the optical sensor 8 of the sensor unit 3 reaches a measurement position (position C) that is close to or in close contact with the screen 101a to be measured so that no external light enters (see FIG. 8C). ). Therefore, the optical characteristics of the display screen are measured in a state that is not easily affected by ambient ambient light, and the sensor unit 3 is retracted from the display screen after the measurement. The bezel of the display device M and the frame of the display panel 101 are provided. It is possible to provide a sensor unit operating mechanism of the optical measuring instrument 1 that can be used regardless of the size of the body 101b, such as the width and thickness.

As shown in FIGS. 7 and 8, a coil spring 72 serving as an elastic member is inserted at the tip of the shaft 5 (the portion where the shaft 5 is exposed through the stop plate 17 c of the support member 17). One end of the coil spring 72 is fixed to the tip of the shaft 5 by an E-ring 75, and the other end is held in a compressed state regulated on the wall of the stop plate 17c via a washer. The coil spring 72 is in a compressed state at the storage position of the sensor unit 3 (see FIG. 8A), and the second cam follower 19 has the extension force of the compressed coil spring 72 at the advance start position of the sensor unit 3. The sliding contact is made along the slope 17b3 of the cam 17b (see FIGS. 8-b and 8-c). That is, the extension force of the coil spring 72 is power that allows the second cam follower 19 and the cam 17b to come into sliding contact with each other. As a result, the sensor unit 3 can be used at a forward start position by moving forward to the measured screen 101a so that the optical sensor 8 is not affected by ambient ambient light. Can be provided.

FIG. 9 is a diagram illustrating the first gear 7 used for rotating the shaft 5. The first gear 7 of the present embodiment includes a 270-degree semicircular shape that is slightly smaller than the first gear 7 and a 90-degree arc shape that is larger than the first gear 7 on the upper surface side of the first gear 7. A plate-like member 74 that is combined with the rotary shaft 71 is coaxially fixed, near a semicircular outer periphery that is slightly smaller than the first gear 7, and near an arc shape that is larger than the first gear 7. A smooth pin 73 is arranged upward. An end (lower end in FIG. 10) 74a of the plate-like member 74 at a position far from the large arc-shaped smooth pin 73 is a rotation start point (storage position (position A)) corresponding to the rotation angle of the shaft 5 being 0 degrees. The end 74b of the plate-like member 74 near the large arc-shaped smooth pin 73 (upper end in FIG. 10) 74b is a rotation end point (measurement position ( C position)) (FIG. 10).

More specifically, when the sensor unit 3 is housed in the measuring instrument main body 2 (housing position (position A)), the large arc shape of the plate-like member 74 is a state in which the microswitch 58 is pressed. The mechanical contact is closed (FIG. 12). The drive motor 6 drives the gear mechanisms 61, 62, 63, etc. according to a control signal from the circuit board (control circuit) 9, whereby the first gear 7 rotates clockwise, and the plate-like member 74 rotates in a large arc shape. The micro switch 58 is opened by the small semicircular shape of the plate-like member 74 from the starting point 74a, and the mechanical contact of the micro switch 58 is opened (FIG. 13). That is, when the micro switch 58 is changed from the ON state to the OFF state, the rotation angle of the shaft 5 is changed from 0 degree to the plus direction, and it is determined that the sensor unit 3 starts to rotate from the storage position (A position). The When the rotation angle of the shaft 5 becomes 90 degrees, the microswitch 59 is pushed by changing from the small semicircular shape of the plate-like member 74 to the rotation end point 74b of the large arc-like shape of the plate-like member 74. 59, the mechanical contact is closed (FIG. 15). That is, when the micro switch 59 is changed from the OFF state to the ON state, the rotation angle of the shaft 5 becomes 90 degrees, and it is determined that the rotation is finished. The control circuit 9 controls the drive motor 6 and the optical sensor 8 using the operation signals of the micro switches 58 and 59 as a trigger. In addition, according to this embodiment, the range of the rotation angle of the shaft 5 can be easily changed by changing the large 90-degree arc-shaped fan angle of the plate-like member 74.

FIG. 10 is a diagram illustrating a first follower (gear follower) 11 used for rotating the shaft 5. The gear follower 11 according to the present embodiment is a substantially oblong circular plate-like member having a majority circle and a small semicircle at a predetermined interval. A rotation shaft 111 is disposed on the majority circle side, and the rotation shaft 111 extends from the rotation shaft 111 to the small semicircle side. A linear groove 113 is formed. The groove 113 has a predetermined length and is formed by combining a wide groove and a narrow groove. The starting point 113a of the groove 113 is located closest to the rotating shaft 111 and has a size that allows the sliding pin 73 to be inserted, and immediately becomes a groove 113b having a width of the groove that does not restrict the operation of the sliding pin 73. After a while, the groove 113c has a size that allows the sliding pin 73 to be just inserted, and after a while, the end point 113d of the groove 113 is reached. The length of the groove 113 from 113a to 113c corresponds to the arc length of the large 90-degree arc shape of the plate-like member 74, and the length of the groove 113 from 113c to 113d is small of the plate-like member 74. It corresponds to the arc length of 270 degree semicircular shape.
A hollow cylindrical support member 112 is disposed below the gear follower 11, and the rotating shaft 111 passes through the support member 112. Further, a quadrangular protruding member 114 is arranged upward in the vicinity of the outer periphery on the almost circular side and in the vicinity of the rotating shaft 111 (FIG. 11).

A movable clamp 13 is mounted on the first follower (gear follower) 11. In the movable clamp 13, a pair of opposing finger members 131 and 132 are arranged coaxially with the rotation shaft 111 of the first follower (gear follower), and the distance between the finger members 131 and 132 is reduced, so that the shaft 5 It is a component that sandwiches the knob member 152 of the attached rotation lever 15. In order to reduce the distance between the finger members 131 and 132, one side of the compression spring 133 is attached to the finger member 131, and the other side of the compression spring 133 is attached to the finger member 132. The protruding member 114 is sandwiched between the finger members 131 and 132 to limit the operable range of the finger members 131 and 132 within a predetermined range (see FIG. 12).

FIG. 11 is a diagram illustrating a state in which the first follower (gear follower) is assembled on the first gear 7 described above. The smooth pin 73 formed on the first gear 7 is inserted into the groove 113 formed in the first follower (gear follower), and the positions of the rotary shaft 71 and the rotary shaft 111 are fixed. As the first gear 7 rotates, the slide pin 73 rotates, the first follower (gear follower) having the groove 113 into which the slide pin 73 is inserted moves in a predetermined path, and the protruding member 114 is interlocked. It is a moving mechanism. In the present embodiment, the rotation start time and end time of the sensor unit 3 are adjusted by changing the width of the linear groove 113 formed in the first follower (gear follower).

12 to 15 are views showing the operation of the operation mechanism of the optical measuring device of the present embodiment. In the present embodiment, the first gear 7 and the third gear 64 connected to the gear follower 11 are linked to each other, and one drive motor 6 drives a gear mechanism including these gears (FIG. 6). The rotation of the sensor unit 3 by a single drive motor 6 causes the sensor unit 3 to exceed the lateral width T6 (FIG. 3) of the frame body 101b of the display panel 101 or the lateral width T5 (FIG. 1) of the bezel 100a of the display device M. (Forward start position (position B)), the second cam follower 19 and the cam 17b are slidably brought into contact with each other with the extension force of the coil spring 72 disposed at the rear end of the shaft 5 along with the rotation. (FIG. 8).

As shown in FIG. 12, when the sensor unit 3 is in the storage position (position A), the knob member 152 of the rotation lever 15 is in contact with the corner of the upper surface 17d1 on the left side of the support member 17 (see FIG. 6). ), The smooth pin 73 formed on the first gear 7 is free without contacting the inner wall of the groove 113, and the mechanical contact of the micro switch 58 is closed. The coil spring 72, which is in contact with the second cam follower 19 and the first locking surface 17b1 of the cam 17b and attached to the tip of the rear of the shaft 5, is compressed in a state of pushing the stop plate 17c of the support member 17 (FIG. 8- a). In the movable clamp 13, the right finger member 132 pushes the knob member 152 of the rotation lever 15 leftward, but the left finger member 131 is separated from the rotation lever 15.

As shown in FIGS. 13 and 6, when the drive motor 6 rotates forward (rightward), the third gear 64 rotates counterclockwise and the first gear 7 rotates clockwise. When the first gear 7 rotates to the right, the slide pin 73 moves to the right and enters the narrow groove width of the groove 113 of the gear follower 11, rotates the gear follower 11 to the right, and passes through the quadrangular protruding member 114. The sensor unit 3 connected to the shaft 5 is arranged in the cw direction so that the finger member 131 on the left side of the movable clamp 13 and the finger member 132 on the right side sandwich the knob member 152 of the rotating lever 15 and rotate the lever 15 to the right. Rotate to. At this time, the states of the second cam follower 19 and the cam 17b that move the sensor unit 3 back and forth, and the coil spring 72 remain unchanged. It is determined that the mechanical contact of the micro switch 58 is opened and turned off, so that the rotation angle of the shaft 5 is changed from 0 degrees to the plus direction and the sensor unit 3 starts to rotate from the storage position (position A). Made.

Then, the third gear 64 and the first gear 7 continue to rotate in conjunction with the drive motor 6 as described above. As shown in FIG. 14, when the first gear 7 rotates to the right, the sliding pin 73 moves to the right and moves to the back side 113d along the narrow groove width of the groove 113 of the first follower (gear follower). The first follower (gear follower) is rotated to the right, and the finger member 131 on the left side of the movable clamp 13 and the finger member 132 on the right side sandwich the knob member 152 of the rotary lever 15 via the quadrangular protruding member 114. The rotation lever 15 is rotated clockwise to the center. Thereby, the sensor unit 3 connected to the shaft 5 is rotated in the cw direction. The protrusion 19a of the second cam follower 19 that rotates integrally with the shaft 5 starts to slide along the first locking surface 17b1 of the cam 17b, and the protrusion 19a of the second cam follower 19 extends from the first locking surface 17b1. It moves to the sliding contact of the slope 17b3 of the cam 17b. At this time, the shaft 5 is pulled in the fw (forward) direction by the extension force of the coil spring 72 attached to the tip of the shaft 5. Thereby, the 2nd cam follower 19 which operate | moves integrally with the shaft 5 begins to slide along the slope 17b3 of the cam 17b (refer FIG. 8-b). When the second cam follower 19 starts to slide on the inclined surface 17b3 of the cam 17b, the sensor unit 3 rotated integrally with the shaft 5 corresponds to the forward start position (position B). That is, the sensor unit 3 exceeds the horizontal width T6 (see FIG. 3) of the frame body 101b of the display panel 101 or the horizontal width T5 (see FIG. 1) of the bezel 100a of the display device M from the storage position (A position). It is in the state rotated to the position.

Further, the third gear 64 and the first gear 7 continue to rotate as described above in conjunction with the drive motor 6. As shown in FIG. 15, when the first gear 7 rotates to the right, the slide pin 73 moves to the right, and the gear follower 11 extends from the back side 113 d along the narrow groove width of the groove 113 of the first follower (gear follower). The gear follower 11 moves to a width 113b exceeding the narrow groove width 113c of the groove 113, and the finger member 131 on the left side of the movable clamp 13 and the finger member 132 on the right side of the movable clamp 13 are rotated through the quadrangular protruding member 114. The lever 15 is rotated clockwise until it comes into contact with the corner of the upper surface 17d2 on the right side of the support member 17 with the 15 knob members 152 interposed therebetween. Thereby, the sensor unit 3 connected to the shaft 5 is rotated in the cw direction. As the shaft 5 rotates, the sliding force 19a3 of the second follower 17 slides along the slope 17b3 of the cam 17b to the second locking surface 17b2 by the extension force of the coil spring 72 released from the compressed state to which the shaft 5 is attached. Thus, the shaft 5 can be moved in the fw direction (forward direction). Further, the sensor unit 3 that operates integrally with the shaft 5 continues to move forward from the advance start position (position B) and moves closer to the screen 101a to be measured. It continues until it touches the position to be measured (C position). At the position C, the sensor unit 3 is in a state in which the light shielding member 4 disposed at the tip and the screen 101a to be measured are attached without entering ambient light. In this state, in the movable clamp 13, the right finger member 131 pushes the knob member 152 of the rotation lever 15 in the right direction, but the right finger member 132 is separated from the rotation lever 15. When the mechanical contact of the micro switch 58 is closed and turned on, it is determined that the rotation and forward movement of the sensor unit 3 are completed and the measurement is possible.

After the measurement, the drive motor 6 rotates in the reverse direction (counterclockwise), so that the sensor unit 3 is moved in the opposite direction of fw from the measurement position (C position) to the forward / backward movement start position (B position) in the reverse order. Optical measurement in which the sensor unit 3 is built in the display device M by rotating in the opposite direction of cw while performing a backward movement remote from the measurement screen 101a and only rotating from the forward start position (position B). It is stored in the container body 2 (storage position (B position)).

Here, the types of display panels include not only liquid crystals but also organic EL, plasma, and the like, and there are various sizes such as the width and thickness of the frame 101b of the display panel 101 and the bezel 100a of the display device M. . The sensor unit operating mechanism of the present embodiment is rotated after the rotation of the sensor unit 3 and the frame 101b of the display panel 101 or the bezel 100a of the display device M, and the thickness of the frame of the display panel 101. Although the longitudinal movement slightly exceeding T1 is realized, for example, since the length of the inclined surface 17b3 of the cam 17b that is in sliding contact with the second cam follower is provided, the range of rotation is further increased. The rotation can be set to 90 degrees or more. Further, by adjusting the height of the inclined surface 17b3 between the first locking surface 17b1 and the second locking surface 17b2 of the cam 17b, the range of forward and backward movement according to the thickness of the frame around the display panel is adjusted. be able to.

As described above, the present invention is not limited to the embodiment described above. What moves the shaft 5 back and forth may be only a cam without using a coil spring. For example, when the shaft 5 rotates in the shape of a cam, the longitudinal movement of the shaft is realized using the shape of the cam. Further, the sensor unit operating mechanism of the present invention is incorporated in the display device M in advance, but it may be an optical measuring device that can be attached to and detached from the bezel of the display device. In this case, the timing for moving the shaft forward from the middle of the rotation is performed after the sensor unit has passed the bezel of the display device.

1 Optical measuring instrument,
2 Optical measuring instrument body,
3 Sensor unit,
4 light shielding member,
5 shaft,
6 Drive motor (drive means),
7 Gear (first gear),
8 Optical sensor,
11 First follower (gear follower),
13 Movable clamp,
15 Rotating lever,
17 support member 17b cam,
17c stop plate,
19 Second follower,
64 Third gear,
72 Coil spring (elastic member)
5, 6, 61 to 64, etc. Drive transmission mechanism,
100 front cover,
100a bezel,
101a Screen to be measured (liquid crystal display screen),
101b Display panel frame

Claims (4)

  An optical measuring instrument is used for measuring a sensor unit in which an optical sensor used for measuring brightness, chromaticity, etc. of a display surface of a display device is arranged at one end and a shaft that rotatably supports the optical sensor is arranged at the other end. In the sensor unit operating mechanism that moves from the storage position of the main body to the measurement position of the display surface and moves from the measurement position to the storage position after measurement, the sensor unit is rotated from the storage position to the measurement position, and A sensor unit operating mechanism, wherein the optical sensor is brought into close contact with or close to the display screen by moving forward from the middle of the rotation.   2. The sensor unit operating mechanism according to claim 1, wherein the timing of advancement from the middle of the rotation is performed after the sensor unit has passed the frame of the display panel.   2. The sensor unit operating mechanism according to claim 1, wherein the timing of advancement from the middle of the rotation is performed after the sensor unit has passed the bezel of the display device.   A first follower fixed to the optical measuring device main body side for rotating the shaft, a drive transmission mechanism for driving the first follower, a second follower fixed to the shaft, and the optical measuring device 4. The sensor unit operating mechanism according to claim 1, further comprising a cam that is fixed to the main body side and that slides on the second follower to advance the shaft.

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