KR200438165Y1 - Glass fog detection module - Google Patents

Abstract

The present invention includes a housing having a cover through-hole on one surface and a housing cover disposed toward a vehicle interior and a housing base disposed on one surface of the vehicle glass; A printed circuit board disposed in an inner space of the housing; And a sensor unit having a temperature humidity sensor disposed on one surface of the printed circuit board toward the housing cover and a surface temperature sensor disposed on one surface of the vehicle glass.

Description

Module unit for protecting Fog on the glass of a vehicle}

1 is a state diagram showing a schematic mounting state of the glass fog detection module according to an embodiment of the present invention.

2 is a schematic perspective view of a glass fog detection module according to an embodiment of the present invention.

3 is a schematic exploded perspective view of a glass fog detection module according to an embodiment of the present invention.

4 is a schematic cross-sectional view of the glass fog detection module according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1 ... vehicle windshield glass 10 ... glass fog detection module

100 ... housing 110 ... housing cover

120 ... housing base 130 ... housing space cutout

200 ... printed circuit board 210 ... regulator

220 Electronic device 300 Sensor unit

310 ... temperature humidity sensor 320 ... surface temperature sensor

The present invention relates to a sensing module, and to a glass fog sensing module for preventing the generation of fog on the vehicle glass surface.

BACKGROUND ART In vehicles such as automobiles, there is an increasing demand for mounting functions of various convenience means and safety devices that allow a user to provide a more stable and comfortable driving state beyond a function as a moving means. Particularly, securing the driver's forward vision is an essential requirement for driving safety. The glass-fogging in the vehicle interior, which occurs when the difference in temperature and / or humidity outside the vehicle interior such as rainy season or winter season, increases the driver's vision suddenly. Lowers. In order to prevent this, various air conditioning control devices are currently being developed.

However, the air conditioning control device according to the prior art is not only complicated in structure, but the air conditioning control device according to the prior art is difficult to accurately detect the environment by using only the vehicle indoor temperature in generating a control signal of the air conditioning device, the steaming conditions Due to the difficulty in determining whether there was a problem that it is difficult to prevent more effective vehicle glass fog.

The present invention is characterized by providing a glass fog detection module of a simple structure capable of transmitting a control signal to the air conditioning device by detecting the environment more effectively to prevent vehicle glass fog.

The present invention for achieving the above object is a housing having a cover through-hole on one surface and a housing cover disposed toward the vehicle interior and a housing base disposed on one surface of the vehicle glass; A printed circuit board disposed in an inner space of the housing; And a sensor unit having a temperature humidity sensor disposed on one surface of the printed circuit board toward the housing cover and a surface temperature sensor disposed on one surface of the vehicle glass.

In the glass fog detection module, the housing isolating the space between the printed circuit board and the housing cover in order to isolate the area where the temperature and humidity sensor is disposed between the printed circuit board and the housing cover. A space blocking unit may be further provided, and a transparent plate is provided on one surface of the housing base facing the vehicle glass, and at least one infrared sensor is provided on the other surface of the printed circuit board as a corresponding area of the transparent plate. May be

In addition, an illuminance sensor may be provided on one surface of the printed circuit board, and a light inlet for allowing light to enter the illuminance sensor may be provided in a corresponding region of the illuminance sensor on one surface of the housing cover.

Hereinafter, a glass fog detection module according to the present invention will be described with reference to the drawings. 1 is a schematic state diagram showing a mounting state of a glass fog detection module according to an embodiment of the present invention, Figure 2 is a schematic perspective view of a glass fog detection module according to an embodiment of the present invention, 3 is a schematic exploded perspective view of a glass fog detection module according to an embodiment of the present invention, Figure 4 is a schematic cross-sectional view of the glass fog detection module according to an embodiment of the present invention.

A vehicle windshield glass 1 is disposed in front of the vehicle, and the interior space 2 of the vehicle is partitioned by the vehicle windglass 1 and the vehicle body. Glass fog detection module 10 according to an embodiment of the present invention is disposed toward the interior space (2) of the vehicle to the inner surface of the vehicle wind shield glass (1). Here, the glass fog detection module 10 is shown to be mounted on the vehicle windshield glass 1 disposed in front of the vehicle, but this is merely an example and the present invention is not limited thereto. That is, various modifications are possible according to design specifications such that the interior space 2 of the vehicle may be disposed on one surface by the rear glass of the vehicle.

The glass fog detection module 10 includes a housing 100, a printed circuit board 200, and a sensor unit 300. The housing 100 includes a housing cover 110 and a housing base 120. By the combination of these, a housing space is formed inside the housing 100.

Cover through-holes 111; 111a, 111b, and 111c are provided on one surface of the housing cover 110. Cover through-holes (111; 111a, 111b, 111c), the internal housing space of the housing 100 to dissipate heat generated by the electrical elements mounted on the printed circuit board and to allow the temperature and humidity measurement in the vehicle interior Allow fluid communication with and external environment. In FIGS. 2 and 3, the housing cover 110 has a configuration including a housing cover 111a, 111b, and 111c divided into three regions, which is not limited thereto.

The housing base 120 is disposed on the vehicle wind shield glass 1. The base coupling portion 121 is formed at the side end of the housing base 120 toward the housing cover 110. A cover coupling part 115 is provided at a side end of the housing base 110, and the cover coupling part 115 is engaged with the base coupling part 121 to be coupled to each other so that the housing cover 110 and the housing base 120 are coupled to each other. The inner housing space formed is formed. Housing base 120 according to an embodiment of the present invention is the rear side, that is, the rear side of the housing base 120 and the corresponding vehicle wind by the extension which is formed extending from the outer side of one side toward the vehicle windshield glass A base back space 129 (see FIG. 4) formed by the shield glass is formed. The base back space 129 is provided with an adhesive pad 400, and one surface of the adhesive pad 400 is attached to the housing base 120 and the other surface is attached to the vehicle windshield glass 1 so that the housing base 120 is connected to the vehicle. The separation from the windshield glass 1 is prevented.

 The printed circuit board 200 disposed in the inner housing space is disposed in the inner housing space of the housing 100. A substrate support 123 is provided inside the housing base 120 of the housing 100. The printed circuit board 200 may be stably disposed in the housing space by the substrate support 123. Of course, the printed circuit board 200 in Figures 3 and 4 is shown to take a structure that is simply placed on top of the substrate support 123, which is just an example of the present invention by the substrate support according to the present invention The supporting structure of the printed circuit board is not limited thereto. That is, the printed circuit board may be provided with a coupling hole, and a coupling pin inserted into the coupling hole may have a structure provided in the housing cover and / or the housing base, such as to stably support the printed circuit board disposed in the housing space. It is clear that various structures can be taken in a range.

As shown in FIG. 3, the regulator 210 and the electric elements 220; 221, 222, and 223 are disposed on one surface of the printed circuit board 200, more specifically, on one surface of the printed circuit board 200 facing the housing cover 110. The regulator 210 stably provides power to the glass fog detection module 10 to enable stable operation of the glass fog detection module 10. The regulator 210 generates a considerable amount of heat during power control. The regulator 210 has a rectangular shape on the printed circuit board 200 in order to block or reduce the influence on the temperature humidity sensor of the sensor unit. It is disposed far away from the temperature humidity sensor 310 to be described.

The electrical elements 220; 221, 222, and 223 include a storage unit 223, an MCU 222, and a transmitter 221. The storage unit 223 is implemented in the form of an EEPROM in which preset values such as temperature, illuminance, and / or rainfall signal sensed by the sensor unit are stored, and the MCU 222 stores the signal detected by the sensor unit. The controller 223 may determine whether the air conditioner, the lighting device, and / or the wiper device need operation by comparing the preset values pre-stored in the unit 223 to generate an operation signal, and convert the signal into a transmittable signal. Sends signals from the MCU 222 to a controller (not shown) that manages air conditioning, lighting, wiper, and / or Electronic Time and Alarm Control Systems (ETACTS) in a communication scheme such as a local interconnect network (LIN). do.

The regulator 210, in which a large amount of heat is generated in the process of signal processing or the like, is disposed to maintain a long distance with the temperature humidity sensor 310, which is sensitive to heat, and the side of the printed circuit board 200. The substrate coupling groove 201 is provided at an end thereof, and the formation position of the substrate coupling groove 201 is disposed in the space where the regulator 210 is disposed by the housing space blocking part 130 and the temperature humidity sensor 310. It is set to a position where the space to be separated can be separated.

The sensor unit 300 includes a temperature humidity sensor 310 and a surface temperature sensor 320. The temperature humidity sensor 310 senses the temperature and humidity of the vehicle interior. The temperature humidity sensor 310 is disposed on one surface of the printed circuit board 200 toward the housing cover 110. Therefore, since the inner housing space may be in fluid communication with the vehicle interior through the cover through hole 111c provided in the housing cover 110, the temperature humidity sensor 310 mounted on one surface of the printed circuit board 200. ) Can detect the temperature and humidity of the vehicle interior. Of course, here, the temperature and humidity sensor 310 is implemented by performing two functions, that is, a temperature sensing function and a humidity sensing function together, but may take a configuration implemented as a temperature sensor and a humidity sensor by taking a separate configuration, etc. Various modifications are possible in the range formed by a sensor that performs a function of sensing temperature and humidity.

The surface temperature sensor 320 is disposed in an interview on one surface of the vehicle wind shield glass 1 facing the housing base 120. That is, the surface temperature sensor 320 may be implemented as a contact type temperature sensor such as a low-cost negative characteristic thermistor formed of sintered metal oxide and having a resistance characteristic that varies with temperature. As such, the surface temperature sensor 320 detects the temperature of the vehicle wind shield glass 1 directly by contacting the surface of the vehicle wind shield glass 1 toward the vehicle interior side to obtain a more accurate surface temperature of the vehicle glass. Can be.

Hereinafter, an operation process of the glass fog detection module according to an embodiment of the present invention will be described. The temperature and humidity sensor 310 of the sensor unit 300 detects and detects the temperature and humidity of the vehicle interior in a predetermined cycle, and the surface temperature sensor 320 faced to the vehicle windshield glass 1 is thermally conductive. The temperature on one surface of the vehicle windshield glass 1 is measured directly. Each sensed temperature and humidity signal is transmitted to the MCU 222 along the wiring. The MCU 222 calculates the dew point temperature at the surface of the vehicle wind shield glass 1 from the vehicle interior temperature and humidity signals from the input temperature and humidity sensor 310. In addition, the MCU 222 may store the surface temperature signal of the vehicle windshield glass 1 from the surface temperature sensor 320 and the calculated dew point temperature and preset values (calculation and / or lockup) previously stored in the storage unit 223. Table) to predict the occurrence of frost at the surface of the vehicle windshield glass 1. The MCU 222 determines whether the air conditioner is operated from the anti-fog prediction signal, converts it into a signal suitable for transmission, and transmits it to the transmitter 221, and the transmitter 221 uses the LIN communication scheme or the like to transmit the MCU 222. Signal is sent to the air conditioning apparatus and / or the controller in charge of the ETACS.

On the other hand, the glass fog detection module 10 according to an embodiment of the present invention is provided with a housing space blocking unit for separating and separating the space where a large amount of heat is generated and the space where the temperature humidity sensor is disposed for more accurate temperature sensing . That is, the housing space blocking unit is a glass fog detection module 10 according to an embodiment of the present invention is to detect the temperature and humidity of the space and the vehicle interior is arranged a regulator for generating a large amount of heat for more accurate temperature sensing Isolate the space where the temperature humidity sensor is placed.

As shown in FIG. 3, the regulator 210, in which a large amount of heat is generated in the process of signal processing, among the electric elements 220, is disposed to maintain a long distance with a temperature humidity sensor 310 that reacts sensitively to heat. A substrate coupling groove 201 is provided at a side end portion of the printed circuit board 200, and a position at which the substrate coupling groove 201 is formed may include a space in which the regulator 210 is disposed by a housing space blocking part 130 described below. The temperature humidity sensor 310 is set to a position capable of separating the space.

The housing space blocking part 130 has a blocking extension part 131 coupled to the substrate coupling groove 201 at each end thereof, and a groove of the bottom surface formed by the blocking extension part 131 disposed to correspond to each other. One side of the printed circuit board 200 is disposed to be inserted into. The top surface of the housing space blocking unit 130 has a shape corresponding to the inner bottom surface of the housing cover 110 and is arranged to abut each other. By such a configuration, the housing space blocking unit 130 disposed between the printed circuit board 200 and the housing cover 110 is a temperature humidity sensor as a space between the printed circuit board 200 and the housing cover 110. The space in which the 310 is disposed and the space in which the regulator 210 which emits a large amount of heat are disposed are separated and separated. In addition, the cover through-hole 111 is divided into a plurality of cover through-holes (111a, 111b, 111c) and each is formed to allow communication with the respective inner space and the outside partitioned by the housing space blocking unit 130 do. That is, the cover through-hole 111a represented by the reference numeral 111a is a space where an electric element such as a regulator is disposed, and the outside (vehicle room), and the cover through-hole 111b represented by the reference numeral 111b is a general electric appliance. The cover through-hole 111c represented by the space and the outside where the element is disposed and the reference numeral 111c allows individual communication between the space and the outside where the temperature humidity sensor 31 is disposed. Therefore, the heat generated from the regulator 210 is discharged to the outside through the cover through hole 111a of the housing cover 110 out of the internal space of the housing 100, thereby, the housing cover 110 and the printed circuit board 200 The temperature humidity sensor 310 disposed on the printed circuit board 200 as a space between the terminals may remove or reduce the influence of heat emitted from the regulator 210. Of course, the embodiment has a configuration in which the substrate coupling groove is provided in the printed circuit board and the blocking extension part is provided in the housing space blocking part, but the present invention is not limited thereto. For example, a protrusion may be provided on the inner lower surface of the housing cover to fix the housing space blocking part so that the end of the housing space blocking part is simply disposed on one surface of the printed circuit board. In addition, in the present embodiment, the substrate coupling groove and the housing space blocking part are provided at the same time, thereby preventing or reducing both heat conduction through the printed circuit board and tropical flow through the housing internal space, thereby preventing heat transfer. It is also possible to take a configuration that is not limited to only the substrate bonding groove. In other words, the substrate coupling groove formed in the notch type between the region where the regulator is disposed and the region where the temperature humidity sensor is disposed may reduce the thermal conductivity through the printed circuit board.

On the other hand, the glass fog module according to the present invention may form a modification further comprising a means for detecting the light of the external environment. As shown in FIG. 3, an illuminance sensor 330 is provided on one surface of the printed circuit board 200, and a light inlet 113 is provided in the housing cover 110. That is, an illuminance sensor 330 is disposed on one surface of the printed circuit board 200 facing the housing cover 110, and a light inlet for allowing the inflow of light from the outside at a position corresponding to the illuminance sensor 330. By being provided with the 113, it detects the light flowing from the light inlet 113 and transmits it to the MCU 222 through a wiring (not shown). The MCU 222 compares a preset illuminance value pre-stored in the storage unit 223 with a signal transmitted from the illuminance sensor 330, and determines the illuminance state of the external environment, that is, whether the head light (not shown) is operated. By transmitting the corresponding control signal to the headlight device (not shown) or the like to allow the driver to more stable driving.

On the other hand, the glass fog module according to the present invention may further include a component for preventing driving obstacles due to rain. That is, as shown in FIG. 3, one surface of the housing base 120, one surface facing the vehicle windshield glass 1, is provided with a transparent plate 125 and a printed circuit as a corresponding area of the transparent plate 125. One or more infrared sensors 340 (FIG. 4) are provided on the other surface of the substrate 200 to detect rainwater. In FIG. 4, four infrared sensors 340 are illustrated, but this is merely an example, and the present invention is not limited thereto. One or more infrared sensors 340 may be provided. However, three or more infrared sensors may be provided in the glass fog detection module for more efficient and accurate measurement. The infrared sensor 340 includes a light emitting unit for emitting infrared rays and a light receiving unit for detecting reflected infrared rays. The infrared rays emitted from the light emitting units of the infrared sensor 340 are transparent plates 125 and the vehicle windshield glass 1. ) Is transmitted through and emitted to the outside. At this time, when the external environment is a rain state, infrared rays transmitted through the vehicle wind shield glass 1 by rain water present on the surface of the vehicle wind shield glass 1 retransmit the vehicle wind shield glass 1 by rain water. The reflection is introduced into the vehicle interior side. The reflected infrared rays are detected by the light receiving unit of the infrared sensor 340, and the infrared sensor 340 that detects the infrared light transmits a signal indicating a rain state to the MCU 222 through a wire (not shown) and the MCU 222. The rain state is determined by comparing the pre-stored rainfall value stored in the storage unit 223 with the transmitted signal, and the wiper device (not shown) via the LIN transmitter 221 determines whether the wiper device is operating. To pass. The wiper device can operate according to the transmitted control signal to provide a stable driving environment for the driver.

The above embodiments are examples for describing the present invention, but the present invention is not limited thereto. That is, in the above embodiment, the glass fog detection module has a structure mounted on the vehicle windshield glass in front of the vehicle, but may have a structure attached to the rear glass. In addition, the housing space blocking portion may take the configuration of being supported by the housing cover and simply disposed on the printed circuit board. In addition, the glass fog detection module does not have a housing space blocking portion, but only takes a configuration of reducing direct thermal conductivity by forming a groove as a notch between the region of the printed circuit board where the regulator is disposed and the region of the printed circuit board where the temperature humidity sensor is disposed. It may be. In addition, the glass fog detection module may further include a receiver to receive a speed signal of the vehicle and take a structure to use when predicting the rim of the vehicle glass. It is possible to increase the operating efficiency by operating the air conditioner and the like at a preset control time through the temperature sensor that detects the vehicle interior temperature and the vehicle glass directly through the heat conduction. Various modifications are possible in the range including the surface temperature sensor.

Glass fog detection module according to the present invention having the configuration as described above has the following effects.

First, the glass fog detection module according to the present invention, by having a separate temperature sensor for measuring the temperature of the vehicle interior and the temperature of the vehicle glass, respectively, to predict the mist of the more precise vehicle glass to operate the air conditioner before the occurrence of the mist By performing the anti-fog function through the driver can enable a more stable driving.

Second, the glass fog detection module according to the present invention, by additionally controlling the operation of the wiper device and / or the lighting device through the infrared sensor and / or illuminance sensor, may provide a more stable driving situation to the driver.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the utility model registration claims attached.

Claims (4)

A housing including a housing cover disposed on one surface of the vehicle glass and a housing cover provided on one surface and disposed toward the vehicle interior; A printed circuit board disposed in an inner space of the housing; And a sensor unit including a temperature humidity sensor disposed on one surface of the printed circuit board toward the housing cover and a surface temperature sensor disposed on one surface of the vehicle glass. The method of claim 1, In order to isolate an area where the temperature humidity sensor is disposed between the printed circuit board and the housing cover, a housing space blocking unit is further provided to isolate the interspace between the printed circuit board and the housing cover. Glass fog detection module. The method of claim 1, A glass fog detection module is provided with a transparent plate on one surface of the housing base facing the vehicle glass, and one or more infrared sensors for detecting rainwater on the other surface of the printed circuit board as a corresponding area of the transparent plate. . The method of claim 1, A light intensity sensor is provided on one surface of the printed circuit board, and a light inlet for allowing light to enter the light intensity sensor is provided in a corresponding region of the light intensity sensor on one surface of the housing cover.

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