TWM583811U - Defogging mirror - Google Patents

Abstract

A defogging rearview mirror includes a body, a thermoelectric chip and a heat conducting element. The body includes a lens holder and a lens, and the lens is connected to the lens holder. The thermoelectric chip is connected to the lens and is disposed in the internal space of the body and is used to generate heat. The thermoelectric chip is electrically connected to a power source and provides an amount of electricity to the thermoelectric chip. The heat-conducting element is disposed between the lens and the thermoelectric chip, and is used to transfer heat to the lens. With the above configuration, the thermoelectric chip can uniformly heat the lens by the thermally conductive element, so that external water molecules cannot condense on the surface of the lens, thereby achieving the effect of defogging, thereby keeping the surface of the lens clear.

Description

Rear fog mirror

This creation is about a rearview mirror, and in particular, a rearview mirror with a defogging function.

On rainy days or in areas where there is a large temperature difference between the indoor and outdoor areas, dew condensation often occurs on the surface of the vehicle's rear-view mirror, making the rear-view mirror unable to clearly reflect the field of view behind the vehicle, and causing the driver to be unable to grasp Driving conditions lead to reduced safety.

At present, there are already industry-developed rear-view mirrors with defogging effect. However, most of the rear-view mirrors with defogging effect on the market use electric heating wires as heating elements, which are easy to wear and have poor heating efficiency, making them impossible to provide Effective defogging effect.

Therefore, the development of a defogging rearview mirror with a good defogging effect and a long service life has become the goal of the joint efforts of related industry players.

This creation provides a defogging rearview mirror, which heats the heat source to the lens stably and evenly through the arrangement of the heat conducting element and the thermoelectric chip. Outside water molecules cannot condense on the surface of the lens, thereby keeping the surface of the lens clear and increasing the safety of driving.

According to one aspect of this creation, a defogging rearview mirror is provided, which includes a body, a thermoelectric chip, and a heat conducting element. The body includes a lens holder and a lens, and the lens is connected to the lens holder. The thermoelectric chip is connected to the lens and is disposed in the internal space of the body and is used to generate heat. The thermoelectric chip is electrically connected to a power source, and the power source provides an electric power to the thermoelectric chip. The heat-conducting element is disposed between the lens and the thermoelectric chip, and is used to transfer heat to the lens.

The defogging rearview mirror according to the aspect described in the previous paragraph, wherein the heat conducting element may be a copper sheet.

The defogging rearview mirror according to the aspect described in the previous paragraph may further include a power controller, which is electrically connected to the power source and used to turn on and off the power supply to provide electricity to the thermoelectric chip.

The defogging rearview mirror according to the aspect described in the previous paragraph may further include a heat sensor, which is electrically connected to the power controller to detect a temperature of a thermoelectric chip.

According to the defogging rearview mirror described in the previous paragraph, when the temperature of the thermoelectric chip is greater than or equal to a preset temperature, the power controller turns off the power to provide power to the thermoelectric chip.

The defogging rear-view mirror according to the aspect described in the previous paragraph may further include a switch, which is connected to the power controller and controls the power controller to turn on and off the power to provide power to the thermoelectric chip.

The defogging rearview mirror according to the aspect described in the previous paragraph may further include a heat dissipation element, which is connected between the thermoelectric chip and the heat conducting element.

According to the defogging rearview mirror described in the previous paragraph, the heat dissipation element may be a fin.

The defogging rearview mirror according to the aspect described in the previous paragraph, wherein the material of the fins may be aluminum or copper.

According to the aspect described in the previous paragraph, the defogging rearview mirror may further include a plurality of air ducts, one end of each air duct is connected to a lens holder, and the other end of each air duct is connected to a lens.

The defogging rearview mirror according to the aspect described in the previous paragraph, wherein the mirror base may have a curved surface structure, and the air duct is connected to the mirror base along the curved surface structure.

100, 200‧‧‧ defog rearview mirror

150‧‧‧Power Controller

110, 210‧‧‧ mirror mount

111‧‧‧Internal space

120, 220‧‧‧ Lenses

121, 131‧‧‧ Adhesive layer

130‧‧‧thermoelectric chip

140‧‧‧ thermal conductive element

151‧‧‧heat sensor

152‧‧‧Switch

160‧‧‧Cooling element

212‧‧‧arc surface structure

270‧‧‧Air duct

P‧‧‧Airflow

Fig. 1 shows an exploded view of the mirror after defogging according to an embodiment of the present invention; Fig. 2 shows a schematic plan view of the mirror after defogging according to the embodiment of Fig. 1; FIG. 4 is a bar graph of the temperature change of the thermoelectric chip in the embodiment; FIG. 4 is a cross-sectional view of the mirror after defogging according to the embodiment of FIG. 1; FIG. 5 is a defogging according to another embodiment of the present invention A cross-sectional view of a rear-view mirror; FIG. 6 is a bar graph showing the temperature change of a thermoelectric chip connected to a heat dissipation element according to the embodiment of FIG. 5; FIG. 7 is a diagram of a thermoelectric chip connected to another heat sink according to the embodiment of FIG. Bar graph of temperature change of components; FIG. 8 shows a perspective view of a rear fog mirror according to yet another embodiment of the present creation; and FIG. 9 shows a rear view of a rear fog mirror according to the embodiment of FIG. 8 Sectional view.

Embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, the reader should understand that these practical details should not be applied to limit the new model. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and elements will be shown in the drawings in a simple and schematic manner; and repeated elements may be represented by the same number.

Please refer to FIG. 1, FIG. 2 and FIG. 4. FIG. 1 shows an exploded view of the rear fog mirror 100 according to an embodiment of the present invention, and FIG. 2 shows the defogging according to the embodiment of FIG. 1. FIG. 4 is a schematic plan view of the rearview mirror 100. FIG. 4 is a cross-sectional view of the defogging rearview mirror 100 according to the embodiment in FIG. The defogging rearview mirror 100 includes a main body (not labeled), a thermoelectric chip 130 and a thermally conductive element 140. The thermoelectric chip 130 and the thermally conductive element 140 are disposed in the main body, and the thermoelectric chip 130 is electrically connected to a power source. The power source provides power to Thermoelectric chip 130. The defogging rearview mirror 100 of the embodiment of FIG. 1 can be applied to a vehicle such as an automobile or a locomotive, and the thermoelectric chip 130 is connected to the power source of the carrier to provide power to the thermoelectric chip 130 through the power source of the carrier.

In detail, the body includes a lens base 110 and a lens 120, and the lens 120 is connected to the lens base 110. The thermoelectric chip 130 is connected to the lens 120 and is disposed in the internal space 111 of the body and is used to generate a heat. The heat-conducting element 140 is disposed between the lens 120 and the thermoelectric chip 130 to transfer heat to the lens 120.

With the above configuration, the thermoelectric chip 130 can generate heat energy when it is energized by the power supply of the carrier, and can transmit the heat energy to the lens 120 through the thermal conductive element 140. After the temperature of the lens 120 increases, external water molecules cannot condense on the surface of the lens 120. The effect of defogging is achieved, so as to keep the surface of the lens 120 clear, so as to increase the safety of driving.

In detail, one surface of the thermally conductive element 140 is connected to the surface of the lens 120 facing the internal space 111, and the thermoelectric chip 130 is connected to the other surface of the thermally conductive element 140. One side is a heating surface (not labeled), and the other is a cooling surface (not labeled). The heating surface of the thermoelectric chip 130 is connected to the heat conducting element 140. The thermoelectric chip 130 transmits heat to the heat conducting element 140 through thermal conduction. Then, the thermal energy is uniformly transmitted to the lens 120 by the heat conducting element 140, so that the temperature of the lens 120 is increased.

It should be particularly noted here that in the embodiment of FIG. 1, the power source may be a power source for a car or a locomotive, and the rear fog mirror 100 may not need to be additionally configured with a power source, but this creation is not limited to this, and may also be required In addition, an independent power source is configured in the defogging rear-view mirror 100.

In addition, compared with traditional lenses with defogging functions, most of which use electric heating wire, the thermoelectric chip 130 has a small size, long life, no power consumption and Good thermal efficiency. Thereby, the defogging rear-view mirror 100 can be more durable and lightweight, and the defogging effect of the defogging rear-view mirror 100 is further improved.

Please refer to FIG. 3, which shows a bar graph of the temperature change of the thermoelectric chip 130 according to the embodiment of FIG. 1. Please refer to Table 1. Table 1 records the heating surface of the thermoelectric chip 130 under different currents. Experimental data on temperature changes. It can be seen from Fig. 3 that the temperature of the heating surface of the thermoelectric chip 130 rises with the increase of current. From the experimental data in Table 1, it can be seen that the heating of the thermoelectric chip 130 is within five minutes at a current of 0.8A. The surface can reach a temperature above 40 ° C, that is, the thermoelectric chip 130 can quickly heat the lens 120 at a relatively low current. With this, the thermoelectric chip 130 can quickly heat the lens 120 without consuming excessive power, and effectively enhance the defogging effect of the mirror 100 after the defogging.

In addition, in the embodiment of FIG. 1, the thermally conductive element 140 is adhered to the lens 120 through the adhesive layer 121, the thermoelectric chip 130 is adhered to the thermally conductive element 140 through the adhesive layer 131, and the adhesive layers 121 and 131 may be highly heat-resistant and Bonding material with good thermal conductivity, the bonding layers 121 and 131 are not easily affected by heating temperature Too high to melt or burn. Thereby, the durability and safety of the defogging rear-view mirror 100 can be improved, so as to extend its service life.

In addition, the thermally conductive element 140 may be a copper sheet. The high heat transfer characteristics of the copper sheet make the heating efficiency of the defogging mirror 100 better, and it can also rapidly heat up the lens 120 and make the mist condensed on the lens 120 Quickly evaporate to keep the lens 120 clear, thereby further improving the practicability of the rear fog mirror 100.

The defogging rearview mirror 100 may further include a power controller 150. The power controller 150 is electrically connected to the power source and is used to turn on and off the power to provide electricity to the thermoelectric chip 130. The thermoelectric chip 130 can be electrically powered through a wire (not shown). Sexually connected to the power controller 150. That is, the power controller 150 can selectively open or close the circuit of the power supply and the thermoelectric chip 130, and drive the thermoelectric chip 130 to heat the lens 120 when the defogging function of the defogging mirror 100 is to be used.

The defogging rearview mirror 100 may further include a switch 152. The switch 152 is connected to the power controller 150 and controls the power controller 150 to turn on and off the power to provide power to the thermoelectric chip 130. In the embodiment shown in FIG. 1, the switch 152 may be a button, which is connected to the lens holder 110 and is exposed in the internal space 111 for the user to press. Specifically, when it is not necessary to use the defogging function, the switch 152 is kept in the off position (not shown in the figure) to reduce unnecessary power consumption and reduce the power load of the car or locomotive. When you want to use the defogging function of the defogging rearview mirror 100, press the switch 152 to the on position (not shown), and control the power controller 150 to turn on the circuit of the power supply and the thermoelectric chip 130 so that the power is supplied to the thermoelectric power. The chip 130 heats the lens 120 by generating heat energy on its heating surface.

The defogging rear-view mirror 100 may further include a heat sensor 151, which is electrically connected to the power controller 150 to detect the temperature of the thermoelectric chip 130. When the temperature of the thermoelectric chip 130 is greater than or equal to a preset temperature, The power controller 150 turns off the power to provide power to the thermoelectric chip 130. More specifically, the thermal sensor 151 is electrically connected to the power controller 150 and the thermoelectric chip 130 through a wire. When the power is supplied to the thermoelectric chip 130 through the power controller 150 and the heating surface of the thermoelectric chip 130 starts to increase in temperature, The sensor 151 starts to detect the temperature of the heating surface of the thermoelectric chip 130. When the temperature of the heating surface of the thermoelectric chip 130 is greater than or equal to a preset temperature, the thermoelectric chip 130 controls the power controller 150 to turn off the circuit between the power supply and the thermoelectric chip 130. The thermoelectric chip 130 is stopped from heating up.

With the setting of the thermal sensor 151, the defogging rear-view mirror 100 can keep the thermoelectric chip 130 within a preset temperature and prevent the thermoelectric chip 130 from continuously heating up. Thereby, the lens 120 can be prevented from bursting due to continuous heating of the thermoelectric chip 130 for a long time, and the safety of using the mirror 100 after defogging is improved.

In addition, the aforementioned preset temperature can be set to 55 ° C-65 ° C, which can effectively prevent outside water molecules from condensing on the surface of the lens 120. It must be noted that the preset temperature can be adjusted according to the use requirements of the defogging rear-view mirror 100, but this creation is not limited to this.

Furthermore, if the thermal sensor 151 fails and the circuit of the power supply and the thermoelectric chip 130 cannot be automatically closed, the user can manually press the switch 152 to the off position to close the circuit of the power supply and the thermoelectric chip 130 and stop the thermoelectric chip 130 from contacting the lens 120. heating. So, with the switch 152 and the thermal sensor 151 Setting, the power controller 150 can be manually or automatically controlled to turn off the circuit between the power source and the thermoelectric chip 130, and a protection mechanism for the rear mirror 100 can be appropriately provided.

Please refer to FIG. 5. FIG. 5 illustrates a cross-sectional view of the rear fog mirror 100 according to another embodiment of the present invention. In order to make the heat transfer effect and heat dissipation effect of the thermoelectric chip 130 better, the defogging mirror 100 may further include a heat dissipation element 160, and the heat dissipation element 160 is connected between the thermoelectric chip 130 and the heat conduction element 140. The heat dissipation element 160 may be a Fins, and the material of the fins can be aluminum or copper, but this creation is not limited to this.

Please refer to FIG. 6, which is a bar chart showing the temperature change of the thermoelectric chip 130 connected to the heat dissipation element 160 according to the embodiment of FIG. 5. Please refer to Table 2 for the heat dissipation elements corresponding to FIG. 6 and Table 2. 160 is a copper fin. Table 2 describes the experimental data of the temperature change of the heating surface of the thermoelectric chip 130 when the thermoelectric chip 130 is connected to the copper fin under different currents. It can be seen from FIG. 6 and Table 2 that the structure of the thermoelectric chip 130 connected to the heat dissipation element 160 can stably and gently increase the temperature, which contributes to the stability of the temperature increase of the lens 120.

Please refer to FIG. 7, which shows a bar graph of the temperature change of the thermoelectric chip 130 connected to another heat sink 160 according to the embodiment of FIG. 5. Refer to Table 3 for cooperation. The heat dissipation element 160 corresponding to FIG. 7 and Table 3 is an aluminum fin. Table 3 describes the experimental data of the temperature change of the heating surface of the thermoelectric chip 130 when the thermoelectric chip 130 is connected to the aluminum fin under different currents. As can be seen from FIG. 7 and Table 3, the structure of the thermoelectric chip 130 connected to the heat dissipation element 160 can stably and gently raise the temperature, and the thermoelectric chip 130 can be stably maintained within a temperature range.

Through the heat-dissipating element 160, when the defogging effect is used, the heat generated by the thermoelectric chip 130 can be more evenly transferred to the heat-conducting element 140, thereby improving the heating efficiency of the lens 120, and effectively keeping the lens 120 at a certain level. Within the temperature range; when the defogging effect is turned off, the heat dissipation effect of the thermoelectric chip 130 can be better, the lens 120 can quickly cool down, and the service life of the mirror 100 after defogging is increased.

Please refer to FIG. 8, which shows a perspective view of a defogging mirror 200 according to yet another embodiment of the present creation, wherein the structure and detailed structure of the defogging mirror 200 and the defogging of the embodiment of FIG. 1 The mirror 100 is the same, and will not be repeated here. The difference between the embodiment in FIG. 8 and the embodiment in FIG. 1 is that the defogging rearview mirror 200 further includes a plurality of air ducts 270, and one end of each air duct 270 The mirror base 210 is connected, and the other end of each air guide tube 270 is connected to the lens 220. The mirror base 210 has a curved surface structure 212, and the air guide tube 270 is connected to the mirror base 210 along the curved surface structure 212.

Please refer to FIG. 9, which is a cross-sectional view of the rear fog mirror 200 according to the embodiment in FIG. 8. It can be seen from FIG. 9 that the air guide pipe 270 is disposed outside the mirror base 210 along the arc structure 212, and the air guide pipe 270 is a tubular structure and has openings at both ends. When the car or locomotive is traveling, the airflow P Affected by the wind-cutting effect of the arc-shaped structure 212, the arc-shaped structure 212 opens from one end of the air duct 270 to the other end of the air duct 270, that is, the airflow P is guided to the surface of the lens 220 through the air duct 270 To make the air flow P blow off the water droplets and mist on the surface of the lens 220.

Through the arrangement of the air duct 270, the defogging effect of the defogging mirror 200 can be further enhanced, and the water droplets on the surface of the lens 220 can be blown off to avoid the water droplets remaining on the lens 220 after evaporation and difficult to remove. The lens 220 is kept clear to increase the driving safety of the driver. In addition, the air duct P 270 guides the airflow P to the lens 220, so that the heat dissipation effect of the lens 220 can be made faster.

Although the new model has been disclosed as above, it is not intended to limit the new model. Any person skilled in the art can make various changes and retouches without departing from the spirit and scope of the new model. Therefore, the new model is protected. The scope shall be determined by the scope of the attached patent application.

Claims (11)

A defogging rear-view mirror includes: a body including: a lens holder; and a lens connected to the lens holder; a thermoelectric chip connected to the lens and disposed in an internal space of the body and used to generate a heat Wherein the thermoelectric chip is electrically connected to a power source, the power source provides an electric power to the thermoelectric chip; and a thermally conductive element is disposed between the lens and the thermoelectric chip to transfer the heat to the lens. The defogging rearview mirror described in item 1 of the scope of patent application, wherein the thermally conductive element is a copper sheet. The defogging rearview mirror described in item 1 of the scope of patent application, further includes: a power controller, which is electrically connected to the power source, and is used to turn on and off the power source to provide the power to the thermoelectric chip. The defogging rear view mirror described in item 3 of the patent application scope further includes: A thermal sensor is electrically connected to the power controller to detect a temperature of the thermoelectric chip. According to the defogging rearview mirror described in item 4 of the scope of patent application, wherein when the temperature of the thermoelectric chip is greater than or equal to a preset temperature, the power controller turns off the power supply to supply the power to the thermoelectric chip. The defogging rearview mirror described in item 3 of the patent application scope further includes a switch connected to the power controller, and controls the power controller to turn on and off the power supply to provide the power to the thermoelectric chip. The defogging rearview mirror described in item 1 of the patent application scope further includes: a heat dissipation element connected between the thermoelectric chip and the heat conducting element. The defogging rearview mirror described in item 7 of the scope of patent application, wherein the heat dissipation element is a fin. The defogging rearview mirror described in item 7 of the scope of patent application, wherein the material of the heat dissipation element is aluminum or copper. The defogging rearview mirror described in item 1 of the scope of the patent application, further includes: a plurality of air ducts, one end of each of the air ducts is connected to the lens base, and the other end of each of the air ducts is connected to the lens. According to the defogging rearview mirror described in item 10 of the scope of patent application, wherein the lens holder has a curved surface structure, and the air ducts are connected to the lens holder along the curved surface structure.