TWM244480U - Driving device for slecting color modes - Google Patents

Description

M244480 V. Creation Instructions α) [Technical Field to which the New Type belongs] ^ This creation is about a projection display device, especially a different color mode selection drive device in a projector. [Previous technology] With the rapid development of technology, projectors have been used in various fields, such as business briefings or home theaters. The needs of business briefings are mainly high brightness, while home theaters are high in order to meet the needs of playing movies. Color saturation is dominant.

As shown in FIG. 1, the conventional projection display device 10 generates an illumination light beam from the light source 11, and the light beam is collected and reflected to a color wheel 1 3 (c ο 1 orwhee 1) through a reflection cover (ref 1 ect οr) 1 2. ), The color wheel 1 3 is provided with a series of color filters. When the light beam passes through the color wheel 13, it is converted into a colored beam, and then passes through the optical integration column 1 4 to uniformize the colored beam, and then the illumination lens group 15 is used. The light is irradiated onto the light valve 16, and then the image beam formed by the light valve 16 is selectively projected into the imaging lens 17 and finally projected onto the screen 18. Among them, the color wheel 13 is red (Red, R), green (Green, G), blue (Blue, B) and white (W, white) color filters 131, 132, 133,% 1 3 4 (S egment ) Constitutes a circular ring, and the filter 1 3 1, 1 3 2, 1 3 3, 1 3 4 is rotated at a high speed by a motor 1 3 5 when the light beam sequentially passes through the filters 1 3 1, 1 After 3 2, 1 3 3, 1 3 4, the different primary colors of red, green, blue, and white are quickly generated and irradiated to the light valve 16. The light valve 16 accurately selects the proportion of light in each color to be projected in a short time. To determine color contrast. Because the conventional projection display device 10 is a single color wheel 13, when it is scheduled as a business briefing, the area of the white filter is increased, and the white light is illuminated. M244480 V. Creation instructions (2) To reduce the R, G, and B colors Filter disk. Poor color saturation. When in use, increase the R, G, and B color film sacrifices part of the brightness, reducing the image color saturation. Therefore, a single structure with opposite requirements can only be designed in one, or in the middle, or to achieve a dual purpose. However, the glued optical glass filter also rotates stably at high speeds and intermittent movements, and is more susceptible to cracking. It is also not enough to obtain the proportion of light colors that the valve chooses to project after vibration or impact.

In order to increase the brightness, but the time of irradiation in this way, the three colors are less vivid. When it is scheduled to be used as a home theater light, and delete or reduce the relative exposure time of white light and white light, to improve the projection display of the shadow color wheel This device is used for high brightness and high color saturation. The color selection wheel is intermittently moved away from the light path to increase brightness. Under the illumination of a high-power light source, the color wheel is placed on the film. , Not only in order to make the color wheel easy to move when it is not available, its structure must be stable and accurate positioning, and then affect the photon fineness. [New content] The purpose of this creation is to provide a color-selection driving device that, with a stable moving structure, ensures that the color wheel does not shift after moving inertia, vibration, or impact, and avoids rupture.

Another purpose of this creation is to provide a color selection driving device that precisely drives the color wheel positioning to obtain the best color contrast. Another purpose of this creation is to provide a color selection driving device that can switch the color wheels of different color saturation modes to expand the scope of application. To achieve the above purpose, this creation is based on a color selection drive

Page 7 M244480 V. The main body of the creation description (3) is provided with a plurality of slide bars and a motor. The motor shaft is connected to a screw, a slide seat is supported on the slide bars freely, and a rack is extended on the back. To engage the screw with a rack. When the motor rotates the screw, the slide can move at an even speed with the rotation of the screw. There are multiple color wheels in front of the slide. These color wheels have different color modes. The seat moves to switch the color wheel of different color modes, and there is another sensor on the body, and the slide block is provided with an opposite sensing block, so that the switched color wheel can be firmly and accurately positioned, and then the phase detection unit is used to confirm that the color wheel cuts into the light The position of the path allows the light valve to accurately process the light ratio of each color to provide the best color contrast.

[Embodiment] Regarding the technical means and other effects used in this creation to achieve the above-mentioned purpose, a preferred embodiment is given below, and it will be described below with reference to the drawings. Please refer to FIG. 2. The color selection driving device of this creative embodiment includes a main body 2 1, a motor 2 2, a screw 2 3, a sensor 2 4, a slider 2 5, a first color wheel 26, a second color wheel 27, and a phase. Detect unit 28. Mainly, the motor 23 on the main body 21 rotates the screw 23 to drive the first color wheel 26 or the second color wheel 2 7 on the slide 25 to move and position by the sensor 2 4 to select the first color wheel 2 6 or the second Color mode of the color wheel 27.

As shown in FIG. 3, the body 2 1 is provided with a fixing plate 2 1 1 at one end, the fixing plate 211 is provided with a through hole 2111, the other end of the body 21 is provided with an end plate 212, and the through hole 2 1 1 1 has another through hole 2 1 2 1, a through-hole 2 1 2 1 is provided with a bearing ring 2122, a motor 22 is fixed on the outside of the fixing plate 211, and a rotating shaft is connected with a

Page 8 M244480 V. Creation instructions (4) Screw 2 3, screw 2 3 passes through the through hole 2 1 1 1 and one end is supported by the bearing ring 2 1 2 2 while the sensor 2 4 is provided on the end plate 2 1 2 Outer side of the body 2 1 is provided with a shaft 2 1 3 on both sides of the upper and lower ends, two shafts 2 1 3 on the upper end are each fixed with an upper member 2 1 4 and an upper slide bar 2 1 5 is fixed, and two shafts on the lower end 2 1 3 each has a fixed element 2 1 4 fixed a slide bar 2 1 6, the slide bar 2 1 6 is parallel to the upper slide bar 2 1 5. In addition, a support rod 2 5 1 extends backward from the upper end of the back of the slide seat 2 5

Support bar 2 5 1 —The upper end is fastened by sliding the upper slide bar 2 1 5. The lower end of the back of the slide seat 2 5 is provided with a sliding sleeve (not shown), which allows the slide bar 2 1 6 to pass through and slide freely. With the support rod 2 5 1 and the sliding sleeve, the sliding seat 2 5 is supported by the upper and lower sliding rods 2 1 5 and 2 1 6 to perform stable sliding; the back of the sliding seat 2 5 is opposite to the height of the screw, and another tooth extends backward. A rack 2 5 2 I is provided on the end surface of the rod 2 5 2 and a rack 2 5 2 I is inserted into the thread of the screw 23 to engage with the slider 2 5 to slide the rod 2 1 upwards and downwards with the forward and reverse rotation of the screw 2 3 5, 2 1 6 Move left and right. Mounting holes 253 are provided at each end of the slide base 2 5 for the rotation motors 2 6 1 and 2 7 1 of the first or second color wheels 26 and 27. The first color wheel 26 has R, G, and B colors. Filters in saturation mode, and the second color wheel 27 has filters in R, G, B, and W high-brightness modes. In addition, the phase detection unit 2 8 is rotating the motor 2 6 1,

2 7 1 is directly above, that is, the upper end of the front of the slider 2 5, and is used to detect the rotation angle of the rotation motors 2 6 1 and 2 7 1. Below the slider 2 5 below the rack 2 5 2, another sensor block 2 5 4 is provided, so that the sensor 2 4 can measure the position of the sensor block 2 5 4 to determine whether the color wheels 26 and 27 are positioned. . The color selection driving device of this creation when the projection display device is turned on, the sensor 2 4 first detects the position of the sensor block 2 5 4 and confirms that the color wheel 2 6 and 2 7 positions are reset to zero. Playback color

Page 9 M244480 V. Creation Instructions (5)

Mode, taking the selection of the color wheel 26 as an example (ie, the color saturation mode), the motor 2 2 (such as a stepper motor, etc.) drives the screw 23 to rotate at a fixed point, so that the meshing tooth bar 2 5 2 follows the screw 23 Both are moving at a slow speed, so that the rack 2 5 2 drives the slide 2 5 to follow. Since the slide 2 5 is limited by the support, the slide bar 2 1 5 and 2 1 6 make the slide 2 5 stable up and down. Downstairs are moving at a slow speed to avoid the slide 2 5 and the color wheel 2 6 and 2 7 from breaking, and cooperate with the sensor 2 4 and the sensor block 2 5 4 to detect and position, and accurately position the color wheel 2 6 into the light path. , To achieve the choice of playback color saturation mode. Then start the rotation motor 2 6 1 in the playback mode to rotate the color wheel 2 6, and measure the rotation angle of the rotation motor 2 6 1 with the phase detection unit 2 8 to determine which color filter is tangent to the light path, so that The light valve precisely processes the light ratio of each color to provide the best color contrast. Conversely, if the color wheel 2 7 is selected (that is, the high-brightness mode), only the motor 2 2 is rotated in the reverse direction, and the remaining operation methods are the same as those of the color saturation mode to provide a high-brightness picture. Although the embodiment of this creation uses two color wheels 26, 27 as examples for illustration, it can be inferred from the same reason that more than one color wheel can be set on the slider 25 to obtain more color mode options; In addition, although this creation uses the side-by-side panning color wheel method to switch the color wheels of different color modes, the color wheel can also cut into the light path in an arc or ring arrangement.

The above is only for the convenience of explaining the preferred embodiments of this creation. The scope of this creation is limited to these preferred embodiments. Any changes made in accordance with this creation will not depart from the spirit of this creation. All belong to the scope of this creation patent application.

Page 10 M244480 Brief description of the drawings [Brief description of the drawings] FIG. 1 shows a schematic diagram of a light path of a conventional projection display device. FIG. 2 shows an external view of the creative color selection driving device. FIG. 3 shows an exploded view of the creative color selection driving device. [Representative symbols of main parts] 2 1 Body 2 1 1 Fixing plate 2 1 1 1 2 1 2 1 Through hole 2 12 End plate 2 13 Support shaft 2 1 5 Upper slide bar 22 Motor 24 Sensor 25 1 Support bar 2 5 2 1 Rack 254 Induction block 26 1 、 271 to 28 Phase detection 2 1 2 2 Bearing ring 2 14 Fixing element 2 16 Slide bar

2 3 Screw 25 Slide 2 5 2 Rack 2 5 3 Mounting hole 26 First color wheel 27 Second color wheel

Page 11

Claims (1)

M244480 6. Scope of patent application The two-color wheel has high brightness modes of red, blue, green and white. 9. The color selection driving device according to item 1 of the scope of patent application, wherein the motor is a stepping motor. 10. The color selection driving device according to item 1 of the scope of the patent application, wherein the slider is provided with a phase detection unit. Page 13