TWI269145B - Automatic sunshade mechanism - Google Patents

Abstract

An automatic sunshade mechanism suitable for a navigator using in a car is provided. The automatic sunshade mechanism includes a sunshade plate, a driver, a light sensor, and a voltage controlling device. The sunshade plate is disposed on a first or a second surface of the navigator using in a car. The driver is disposed in the navigator so as to make the sunshade plate slip from the first surface or open up from the second surface. The light sensor is disposed on the first surface of the navigator so that the light sensor can sense whether the incident light amount on the first surface is out of a default value and output a voltage signal correspondingly. The voltage controlling device is connected between the driver and the light sensor. The voltage controlling device can receive a voltage signal and output a controlling voltage to the driver to control the sunshade plate to open or close.

Description

T〇4»7twf.doc/y IX. Description of the Invention: [Technical Field] The present invention relates to an automatic sunshade mechanism, and more particularly to an automatic sunshade mechanism suitable for a car navigator. [Prior Art] With the rapid advancement of electronic technology, many products with global positioning system (GPS) functions have been successively applied to our daily lives and work. Similar products, such as a personal digital assistant (PDA) with navigation function, a car navigation device, etc., can be used to help the user understand the condition of the road, and can also locate and track the user's position and direction. Speed, etc. The user only needs to turn on the navigation function when driving the vehicle, and then the road conditions can be controlled. However, when the sun is too strong, the strong light will shine directly from the top of the screen to the user's eyes, causing the background light to be too strong, so that the screen surface of the screen is in sharp contrast with the moonlight, which will make the user unable to clearly see the display. "The curtain" has a certain degree of inconvenience in its use. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide an automatic sunshade mechanism that can automatically open to shield light incident from above the screen when the sunlight intensity is too strong, so that the user can clearly view the screen. The present invention proposes an automatic sunshade mechanism suitable for use in a vehicle navigation device, which includes a sun visor, a driver, a light sensor, and a voltage control device. The sun visor is disposed on the first surface or the second surface of the car navigator. The drive is configured in the car navigator to drive the 6 12691 tw twf.doc/y surface to slide out or pick up from the second surface. Light sensor -: On the first surface of the vehicle's ν state, it is used to sense whether the amount of light incident on the first surface exceeds the preset value, and the voltage is 霄. The voltage control device is connected between the device and the light sensing device to obtain the second signal and output the control voltage to the driver to control the opening of the sun visor ^

An automatic sunshade mechanism in accordance with a preferred embodiment of the present invention wherein the vehicle has - disposed on the second surface and the sunshade = adapted to shield light incident from above the screen. The automatic sunshade mechanism according to the preferred embodiment of the present invention, wherein the drive includes, for example, a stepping motor. 8. An automatic sunshade mechanism according to a preferred embodiment of the present invention, such as a photoresistor. a pier test according to a preferred embodiment of the present invention, wherein the bottom of the sun slab has, for example, a slider, and the first surface of the vehicular Navigator corresponds to

There is a slideway that moves at least a portion of the visor from the first surface to above the second surface when the slider is moved from one end of the slide to the other end. An automatic sunshade mechanism in accordance with a preferred embodiment of the present invention, wherein the bottom of the sun slab has, for example, a rotating shaft, and the rotating shaft is rotated by the actuator to cause the 1% panel to be lifted from the second surface. An automatic sunshade mechanism in accordance with a preferred embodiment of the present invention wherein the sunshade is formed, for example, by a material that is opaque. In the automatic sunshade mechanism of the present invention, when the sunlight intensity is too strong, the sun visor will be 7 I2691^7tw, and doc /y will be automatically turned on, so that the light incident from above the screen can be shielded so that the user can clearly watch the screen. The above and other objects, features, and advantages of the present invention will become more apparent <RTIgt; [Embodiment] FIG. 1A is a schematic structural view of an automatic sunshade mechanism according to a first embodiment of the present invention when the sun visor is not opened, and FIG. 1B is a view showing the structure of the automatic sunshade mechanism of FIG. schematic diagram. Referring to Fig. 1A, the automatic sunshade mechanism M of the present embodiment is applied to a car navigator 1A and is mounted on the car navigator 100. The vehicle navigator 1 is, for example, a personal digital assistant having a satellite positioning function, and includes a first surface 11A, a second surface 12A, a screen 13A, and an automatic sunshade mechanism 14A. The screen 130 is disposed on the second surface 120. The automatic sunshade mechanism 14A includes a sun visor 142, a driver 144, a light sensor 146, and a voltage control device 148. The sun visor 142 is disposed on the first surface no of the car navigator 1 用 to return light incident from above the screen 130, and the material of the sun visor 142 is, for example, an opaque material. The driver 144 is disposed in the vehicular Navigator 100, and the slidable visor 142 is slid out of the first surface 11 ,, and the driver 144 is, for example, a stepping motor. The photo sensor 146 is disposed on the first surface 110 of the vehicular navigator 100. In addition, a voltage control device 148 is connected between the driver H4 and the photo sensor 146 for controlling the opening and closing of the cover 8 / y 1269 n 11⁄4 plate 142. FIG. 2 is a flow chart showing the operation of an automatic sunshade mechanism. Referring to FIG. 2, when the sun light is incident on the first surface 11A, the photo sensor 146 detects the incident amount of the light, and then sends a corresponding voltage signal to the voltage control device 148. After receiving the corresponding voltage signal, the voltage control device 148 outputs a control voltage to the driver 144. When the driver 144 receives the control voltage, it moves the position of the sun visor 142 to turn the sun visor on or off. If the amount of light incident detected by the light sensing 146 exceeds a preset value, a corresponding voltage signal is sent to the voltage control device, and the voltage control device 148 transmits the corresponding control voltage to the driver 144 to make the sun visor 142. Turning on (as shown in Figure 1B), the sun visor 142 will obscure the light incident from above the screen. In addition, if the line intensity is darkened and the light incident amount is less than or equal to the preset value, the photo sensor 146 emits another corresponding voltage signal, and finally the driver 144 turns off the sun visor 142 (as shown in FIG. 1A). It is worth mentioning that if the photo sensor 146 is a photoresistor, the resistance of the photoresistor will become smaller when the sunlight is applied to the photoresistor. This will cause the voltage value of the voltage signal output from the photo sensor 146 to become larger due to the circuit design. When the incident amount of light detected by the photo sensor 146 is greater than a predetermined value (that is, when the resistance value of the photoresistor is less than a corresponding resistance value), the voltage signal received by the voltage control device 148 The voltage value will also be greater than a corresponding voltage value. At this time, the pressure control device 148 sends a control voltage to the driver 144 to turn on the sun visor H2. Conversely, if the incident amount of light detected by the photo sensor 146 is less than 9 rtwf.doc/y or equal to a predetermined value (that is, when the resistance value of the photoresistor is greater than a corresponding resistance value) The voltage value of the voltage signal received by the voltage control device 148 is also less than a corresponding voltage value. At this point, the pressure control device 148 sends a control voltage to the driver 144 to close the sun visor 142. 3 shows a perspective enlarged view of the area indicated as A in FIG. 3, in the present embodiment, the bottom of the sun visor 11 has a slip 142a that is forked to the control of the driver 144, and the first surface 110 of the car navigator 1 has a corresponding one. Slide ll〇a. The manner in which the driver 144 controls the slider 142a is, for example, driven by a belt link or by a link rod. When the slider 142a is controlled by the driver 144, one end of the sun visor 142 moves from the first surface 110 to the top of the second surface 12A when the end of the slide u 〇a is moved to the end of the f. In the above, when the amount of incident light exceeds a preset value, the sun visor 142 is slid out from the first table S 110 in the manner described above (as shown by γ )), when the amount of incident light is reduced to a preset value or a preset value or less. The sun visor 142 will slide back onto the first surface 110 in the opposite manner (as shown in FIG. 1A). One value = note that 'Although the automatic sunshade mechanism of this embodiment is installed on a car navigation, the automatic sunshade mechanism of the present invention can also be made according to different styles - for the independent use of the car navigator mechanism. The second embodiment, s FIG. 4A is a schematic structural view of the automatic sunshade mechanism according to the second embodiment of the present invention, and the automatic sunshade mechanism of the figure 4 is opened when the sun visor is opened. Schematic. Referring to FIG. 4A, the automatic sunshade mechanism 240 of the present embodiment is applicable to the 4-way navigator 200, and 12691 is twf.doc/y and is installed on the vehicle navigation crying ^Λn &amp; 200, and is similar to the In one embodiment, the different sunshade mechanism 240 and the automatic sunshade mechanism 140 are provided. The sun visor 242 of the sunshade mechanism 240 is disposed at the bottom and the bottom of the sun visor 242 has a rotating shaft 242a. When the amount of light left by the factory, the amount of light detected by the factory exceeds the preset value, the voltage signal will be sent to the voltage control, and the voltage (four) device 248

Then, the corresponding control voltage is transmitted to the driver 244 to drive the rotating shaft to rotate, so that the sun visor 242 is lifted from the second surface (as shown in FIG. 4B), so that the sun visor 242 can be confused with the upper person. In addition, if the intensity of the light is dimmed, the photo sensor 246 emits another corresponding voltage signal, and finally the drive 244 drives the rotating shaft 242a to rotate to close the sun visor 242 (as shown in Fig. 4A). In addition, as in the first embodiment, although the automatic sunshade mechanism 本I of the present embodiment is provided on a vehicle navigation object, the automatic sunshade mechanism of the present invention can be made into a vehicle navigation according to different needs. Independent mechanism of the device

In summary, the automatic sunshade mechanism of the present invention has at least the following advantages: 1. The automatic sunshade mechanism of the present invention is suitable for a car navigator, which can shield the light incident from above the screen, thereby avoiding excessive background light affecting the screen. The clarity of the display screen so that the user can clearly view the firefly. In the automatic sunshade mechanism of the present invention, when the light incident amount is too strong, the sun visor will automatically open to shield the light incident from above the screen. The user does not need to open the sun visor by himself, so it is convenient to use. 1269m, wf.doc/y LIMITATION OF THE PREFERRED EMBODIMENT The above disclosure is not intended to be used in the scope of the present invention, and the present invention may be modified without departing from the spirit of the invention. The protection [the simple definition =] f is defined by the patent scope.

The board is not f: the start time::=:7 The automatic sunshade mechanism of the embodiment is applied to the sunshade. The automatic sunshade mechanism of ill 1A is used when the sun visor is opened. ^ ^ The operation flowchart of the automatic sunshade mechanism. 2:8: A magnified view of the area labeled A in Figure 1. Shading: not open; automatic sunshade mechanism of the embodiment in the structure 3 not the automatic sunshade mechanism of Figure 48 when the sun visor is opened

[Main component symbol description] 100, 200: car navigator 110: first surface 110a: slide 120: second surface 130: screen 14〇, 240: automatic sunshade mechanism 142 '242: sun visor 142a: slider 12 1269143⁄4 twf.doc/y 144, 244: Drivers 146, 246: Light sensors 148, 248: Voltage control device 242a: Axis A: Local area 1269143⁄4 twf.doc/y

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Claims (1)

Rtwf.doc/y X. Patent application scope: 1. An automatic sunshade mechanism for a vehicle navigator, the automatic sunshade mechanism comprising: a sun visor disposed on the first surface of the car navigator or a driver is disposed in the vehicle navigator for driving the sun visor to slide out from the first surface or to be lifted from the second surface; a light sensor disposed in the vehicle navigator On the first surface, using the ® to sense whether the amount of light incident on the first surface exceeds a predetermined value, and correspondingly outputting a voltage signal; and a voltage control device connected to the driver and the photo sensor To obtain the voltage signal and output a control voltage to the driver to control the opening and closing of the sun visor. 2. The automatic sunshade mechanism of claim 1, wherein the car navigator has a screen disposed on the second surface, and the sun block is adapted to shield light incident from above the screen when the sun block is opened. 3. The automatic sunshade mechanism of claim 1, wherein the driver comprises a stepper motor. 4. The automatic sunshade mechanism of claim 1, wherein the light sensor is a photoresistor. 5. The automatic sunshade mechanism of claim 1, wherein the bottom of the sun visor has a slider, and the first surface of the vehicle navigator has a slide corresponding to the drive. When the control moves from one end of the slide to the other end, at least a portion of the sun visor moves 14 rtwf.doc/y from the first surface to above the second surface. 6. The automatic sunshade mechanism of claim 1, wherein the bottom of the sun visor has a rotating shaft, and the rotating shaft is rotated by the driver to lift the sun visor from the second surface. 7. The automatic sunshade mechanism of claim 1, wherein the sun visor is formed of an opaque material. 15