TW200415047A - Antiglare rearview mirror assembly - Google Patents

Abstract

An antiglare rearview mirror assembly for use in an outdoor vehicle is disclosed. The assembly includes an electrochromic rearview mirror changing reflectance thereof in response to a control signal; a glare sensor receiving rearward light and asserting a first signal responsive to the intensity of the rearward light; an ambient light sensor receiving downward light, and asserting a second signal responsive to the intensity of the downward light; and a comparator in communication with the glare sensor and the ambient light sensor, and asserting the control signal in response to the first and the second signals to control the reflectance of the electrochromic rearview mirror.

Description

200415047 V. Description of the Invention (1) Field of the Invention This case is an anti-glare mirror module, especially an anti-glare mirror module applied to outdoor vehicles. Background of the invention

As the number of vehicles continues to increase, the driving environment is getting worse and worse, especially at night or in low-light environments. The strong light of rear vehicles on the rear-view mirrors will cause car drivers to have a dazzling feeling and cannot see the road conditions. In order to improve This lack of 'many manufacturers have developed a variety of rearview mirror modules with anti-glare function. Please refer to the first figure (a), which is a functional block diagram of a conventional anti-glare rear-view mirror module, which is mainly mounted on an electro-chromic rear-view mirror 丨 丨 and a light sensor 12 is installed, and the glare sensing The device 12 is used to sense the strong light emitted by the vehicle, and then sends a control signal to the electric color-changing rear view mirror, so that the color-changing rear view mirror 11 can change its reflectance according to the intensity of bright light appearing behind. For example, when the glare sensor 2 detects

When it is large, the reflectivity of the electrochromic rear-view mirror will become low (e.g., darken, t darken) ', thereby reducing the glare of the car driver to achieve anti-glare. However, this type of anti-glare rearview mirror module only has a needle, so you can't judge its correct operation = see;; in an environment with sufficient lines, 戍 是 于 土 &明亮 Under the bright Tang Xuhetian π such as steam faint, the electric discoloration function is still ready to be cleaned. T The degree and the boundary value of I are still mounted. Θ continues to act and the reflectance of the rearview mirror 11 is produced.

200415047 V. Description of the invention (2) Improper changes. In order to stop unnecessary actions, a second conventional anti-glare mirror module as shown in the first figure (b) is developed. As can be clearly seen from the figure of the first figure (b), the second conventional anti-glare rear-view mirror module is provided with an ambient light sensor 13 at the rear-view mirror module toward the front of the vehicle. Measure the light intensity of the environment in which the vehicle is located. Therefore, when the light is strong during the day, the ambient light sensor 13 will stop the color changing function of the electric color changing mirror 11 to avoid unnecessary changes in reflectivity. Conversely, at night or when the light is weak, the ambient light sensor 13 activates the electrochromic rear view mirror 11 to change its light reflectance according to the control of the glare sensor 12.

In the updated design, a comparison controller i 4 (a functional block diagram shown in the first figure (c)) is added to the module, which receives the glare sensor 12 and the ambient light sensor at the same time. The light intensity signals T1 and T2 respectively sent by 1 and 3 are compared to obtain a comparison value c (c can be defined as T1 / T2 or Π-Τ2), and then a control signal related to the size of the comparison value c is output to control The electrochromic rear view mirror 11 changes its light reflectance. For example, when the comparison value C is greater than a threshold value, the comparison controller 4 can determine that the light intensity received by the glare sensor 12 is much greater than the light received by the ambient light sensor 3 Intensity, at this time, a control signal can be issued to control the electrochromic rear-view mirror

The light reflectivity is changed, and the degree of change can be positively correlated with the magnitude of the comparison value ^. However, because the directions of the 'ambient light sensor 丨 3' in the above-mentioned conventional modules are all designed to face the front of the vehicle (as shown in the schematic diagram of the first figure (d)), they are often opposed to the lights or street lights of the oncoming vehicle. The strong light and shadow in the front of the car cause misoperation, which makes the electrochromic rearview mirror u not work properly.

200415047 V. Description of the invention (3) In terms of 'when the environment is at night or the light is weak, in theory, the ambient light sensor 1 3 will activate the electric color-changing rear view mirror i, which can respond to the glare sensor 1 2 control to change its light reflectivity. However, when the light of the oncoming car is sensed by the ambient light sensor i 3 heading towards the front of the vehicle, the electric color changing mirror 丄 i will be forced to stop the color changing function without losing the anti-glare function. However, all safety-related products need to pursue a higher success rate. Therefore, how to improve the lack of conventional methods is the main purpose of developing this case. Summary of invention

This case is an anti-glare rear-view mirror module applied to an outdoor vehicle. It includes: an electro-chromic rear-view mirror that changes its light reflectance in response to a change in a control signal; a glare sensor , Which receives the light incident from the rear of the outdoor vehicle, and then outputs a first signal representing the intensity of the rear incident light; an ambient light sensor, which receives the light incident from the bottom upward, and then outputs the bottom A second signal of the incident light intensity; and a comparison controller, which is connected to the glare sensor and the ambient light sensor, which sends out the control signal to control in response to a change in the first signal and the second signal Light reflectivity of the electrochromic rear view mirror. According to the above-mentioned concept, in the anti-glare rear-view mirror module described in the present case, the comparison controller stops the light of the electric color-changing rear-view mirror when the intensity of the light received by the ambient light sensor is greater than a first threshold value. Control action of reflectivity. According to the above concept, the anti-glare rear-view mirror module described in this case, wherein the

200415047 V. Description of the invention (4) The received first-signal and the second-signal are judged by ': in comparison value' and when the comparison value C is greater than a second threshold value 牯, the comparison controller then The control signal related to the magnitude of the comparison value C is rotated to change the light reflectance of the electrochromic rear-view mirror. According to the above concept, in the anti-glare rear-view mirror module described in the present case, the comparison value C is a ratio of the first signal to the second signal level. According to the above concept, in the anti-glare rear-view mirror module described in the present case, the comparison value C is a difference between the first signal and the second signal level. According to the above-mentioned concept, in the anti-glare rear-view mirror module described in the present case, the glare sensor is disposed on the front side of the electric color-changing rear-view mirror and faces the outdoor vehicle. According to the above-mentioned concept, in the anti-glare rear-view mirror module described in the present case, the ambient light sensor is disposed below the electric color-changing rear-view mirror and faces below the outdoor vehicle. Another aspect of the case is an anti-glare rear-view mirror module, which is applied to an outdoor vehicle and includes: a glare sensor that receives light incident from the rear of the outdoor vehicle and outputs a representative A first signal of the intensity of the rear incident light; an ambient light sensor that receives light incident upward from below, and then outputs a second signal representing the intensity of the incident light below; and an electric color-changing rearview mirror, the signal Connected to the glare sensor and the ambient light sensor, when the intensity of the light received by the ambient light sensor is less than a first threshold value, the mode is switched to a working mode, and the electric color-changing rearview mirror is in the working state. In the mode, the reflectivity of the first signal is changed according to the level of the first signal.

Page 10 200415047 V. Description of the invention (5)-According to the above concept, the anti-glare rear-view mirror module described in this case, wherein the intensity of the light received by the ambient light sensor is greater than the first threshold value, the electric The color-changing rearview mirror changes to an off mode and stops changing its light reflectance. According to the above-mentioned concept, in the anti-glare rear-view mirror module described in the present case, the ambient light sensor is disposed below the electrochromic rear-view mirror and toward the lower side of the external carrier. ~ Simple Schematic Explanation This case can be solved by the following diagrams and detailed explanations: The first picture (a) (b) (c): It is a block diagram of three conventional anti-glare rearview mirrors. . <Liyue Dagger First picture (d): It is a schematic diagram of the appearance of a conventional anti-glare mirror module. Second picture: It is a schematic diagram of the first embodiment of the anti-glare mirror module disclosed in this case. The second preferred embodiment of the anti-glare rearview mirror module is shown in the third figure: it is a schematic diagram of the embodiment disclosed in this case. The components included in the drawings of this case are listed as follows: Electric color-changing rearview mirror 11 Ambient light sensor 1 3 Controlled switch 20 Glare sensor 1 2 Comparison controller 1 4 Electric color-changing rearview mirror 21 See section 11 Page 200415047 V. Description of the invention (6) Glare sensor 2 2 Electrochromic rearview mirror 3 1 Ambient light sensor 3 3 Ambient light sensor 2 3 Glare sensor 3 2 Comparison controller 34 Detailed description of the invention

Please refer to the second figure, which is a schematic diagram of the first preferred embodiment of the anti-glare rearview mirror module disclosed in this case. It can be clearly seen from the figure that the direction of the ambient light sensor 23 of the preferred embodiment is The system is designed to face downwards. Its main purpose is to detect the brightness of stray light scattered in the interior of the car. In this way, the ring light sensor Is 2 3 will faithfully reflect the actual ambient light intensity. When the light is strong during the day, the ambient light sensor 23 will stop the electric color-changing mirror 2 j (disconnect the controlled switch 2 in the figure) to avoid unnecessary changes in reflectivity. Conversely, at night or when the light is weak, the ambient light sensor 2 3 activates the electrochromic rear view mirror 21 (turning on the controlled switch 20 in the figure), which can change its light according to the control of the glare sensor 22. Reflectivity. And even if there is a strong light in front of or above the car such as the lights of the oncoming cars or street lights, this case will not be affected and cause malfunction.

Please refer to the third figure, which is a schematic diagram of the second preferred embodiment of the anti-glare rear-view mirror module disclosed in the present case. A comparison controller 3 4 is additionally provided, which receives the glare sensor 32 and the environment at the same time. The first intensity signal T1 and the second intensity signal sent by the light sensor 3 3 are respectively compared to obtain a comparison value C (C can be defined as T1 / T2 or Ti-T2), and then output a A control signal related to the magnitude of the comparison value c to control the electrochromic rear view mirror 3 丨 change its light reflection

Page 12 200415047 V. Description of Invention (7)-Rate. For example, when the comparison value C is greater than a threshold value, the comparison control cry 34 may determine that the light intensity received by the glare sensor 32 is far greater than the light intensity received by the ambient light sensor 33. At this time, a control letter $ can be issued to control the electrochromic rear view mirror 3 丨 to change its light reflectance, and its change range ^ = can be positively correlated with the size of the comparison value C. Similarly, in the preferred embodiment, the direction of the ring light sensor 33 is designed to face downward for detecting the brightness of stray light sources scattered in the interior of the vehicle. In this way, ambient light The sensor 33 will more faithfully reflect the actual ambient light intensity, and reduce the chance of making an error &amp; operation. '' In summary, this case can indeed improve this deficiency, which is the main purpose of developing this case. The above-mentioned electrochromic rear view mirror 31 can be composed of electrochromic glass or other electrochromic light-transmitting objects (such as liquid crystal cells). Therefore, the present invention can be modified by any person skilled in the art who uses this technique. It is better to protect those who attach the scope of patent application.

Page 13 200415047 Brief description of the drawings The first picture (a) (b) (c): It is a functional block diagram of three conventional anti-glare mirror modules. First image (d): It is a schematic diagram of the appearance of a conventional anti-glare rear-view mirror module. The second figure is a schematic diagram of the first preferred embodiment of the anti-glare rear-view mirror module disclosed in this case. The third figure is a schematic diagram of the second preferred embodiment of the anti-glare mirror module disclosed in this case.

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Claims (1)

200415047 6. Scope of Patent Application 1 · An anti-glare rear-view mirror module, which is used in an outdoor vehicle. It contains: an electric light which reflects a glare light, enters a ring and outputs a ratio sensor. The control letter 2 · 如Apply for comparative control of a first door's color change rate; light sensor and output ambient light sensor represent that the control is based on the number of patented devices to control the patent, which is the threshold value, and the sight glass, which is changed in response to the change of control 彳 5 The actuator is a receiver which receives the intensity of the incident light from the rear of the outdoor vehicle, which represents the intensity of the incident light at the rear. It is a second signal that receives the intensity of the incident light from below and the intensity of the incident light from below. And the signal connection between the device and the glare sensor and the ambient light should change the first signal and the second signal to emit the light reflectivity of the electrochromic rearview mirror. The anti-glare rear-view mirror module described in item 1, wherein the intensity of the light received by the ambient light sensor is greater than stopping the control of the light reflectance of the electric-color-changing rear-view mirror 3. The anti-glare rear-view mirror module according to item 1, wherein the comparison control device compares the received first signal with the second signal to obtain a comparison value, and when the comparison value C When it is larger than a second threshold value f, the comparison controller outputs the control signal related to the magnitude of the comparison value C to change the light reflectance of the electrochromic rear-view mirror. 4. The anti-glare rear-view mirror module according to item 3 of the application / patent scope, wherein the comparison value C is a ratio of the first signal to the second signal level. 5. The anti-glare rear-view mirror module according to item 3 of the scope of patent application, wherein the comparison value C is a difference between the first signal and the second signal level. Page 15 200415047 6. Scope of patent application 6 · If the scope of patent application is the first! The anti-glare rear-view mirror module according to the item, wherein the glare sensor is disposed on the front of the electrochromic rear-view mirror and faces behind the outdoor vehicle. 7 · The anti-glare rear-view mirror module according to item 1 of the scope of patent application, wherein the ambient light sensor is disposed below the electrochromic rear-view mirror and faces below the outdoor vehicle. 8 · —An anti-glare rear-view mirror module, applied to an outdoor vehicle, which includes:, A glare sensor that receives light incident from the rear of the outdoor vehicle and further outputs a first signal representing the intensity of the rear incident light; and an ambient light sensor that receives light incident upward from below, Further outputting a second signal representing the intensity of the incident light below; and, a 1-color changing rear-view mirror, the signal connection with the glare sensor and the ambient light ff 'is when the ambient light sensor receives When the light intensity is less than the first gate interpolation, it transitions to a working mode, and in the working mode of the electrochromic rearview mirror, its reflectance is changed according to the level of the first signal. The anti-glare rearview mirror module described in item 8 of the patent scope, wherein the intensity of the light received by the receiver is greater than the first threshold value, such as: &amp; the mirror changes to a closed mode and Stop changing its light reflectivity. The anti-glare rear-view mirror module according to item 8 of the patent / provisional umbrella, wherein the sensor is disposed below the electrochromic rear-view mirror and faces below the outdoor combat gear.