TWM562236U - Dashboard - Google Patents

Abstract

A dashboard including a display panel, a solar panel absorbing solar energy, a control unit electrically connected to the solar panel, and a piezoelectric actuator is provided. The solar panel converts the solar energy into electrical current. The piezoelectric actuator is disposed corresponding to the display panel and electrically connected to the control unit. The control unit is electrically connected to the solar panel and the electrical current is converted into a voltage signal, and the piezoelectric actuator deforms according to the voltage signal, so as to generate an airflow.

Description

Vehicle dashboard

This creation relates to a vehicle instrument panel; specifically, the present invention relates to a vehicle instrument panel having a heat dissipation mechanism.

Display technology continues to develop, display technologies such as liquid crystal display (LCD) and electrophoretic display (EPD) have been fully applied to various fields of life, among which the in-vehicle display device is the main application of these display devices. One of the areas.

The vehicle display device includes an instrument panel, an audio display screen, a navigation display screen, etc., because it is directly mounted on the vehicle body, and the environment in which it is installed also changes with the movement of the vehicle, so the vehicle display device is also at different temperatures. Under work. At the same time, in addition to the heat generated by the wafer of the display device itself and the backlight source, the thermal energy of the vehicle and the thermal energy brought by the sunlight increase the temperature of the vehicle display device. Since the nature of the liquid crystal changes with temperature, the above display device also degrades the display quality when the ambient temperature is too high. When the display device is applied to a vehicle such as a motorcycle, an electric bicycle or an electric bicycle, the instrument panel directly exposed to the sun is more likely to lose its proper display effect due to the exposure of the sun. Therefore, how to improve the temperature of the vehicle display device is one of the problems that need to be solved at present.

The purpose of the present invention is to provide a mechanism for generating airflow to provide heat dissipation of the display panel when the vehicle instrument panel is exposed to sunlight, and to maintain the standby temperature or operating temperature of the display panel in an appropriate range.

In one embodiment, the vehicular instrument panel of the present invention includes a display panel, a solar panel for absorbing solar energy, a control unit electrically connecting the solar panels, and a piezoelectric actuator. Solar panels are used to absorb solar energy and convert it into electricity. The piezoelectric actuator is disposed corresponding to the display panel and electrically connected to the control unit. The control unit is electrically connected to the solar panel, and the current is converted into a voltage signal, and the piezoelectric actuator is deformed according to the voltage signal to provide a gas flow.

Compared with the prior art, the vehicle instrument panel of the present invention absorbs solar energy by the solar panel to be converted into electric current, and can be used as a voltage signal for driving the piezoelectric actuator to deform, so that the piezoelectric actuator is generated according to the deformation of the voltage signal. The airflow, even in the absence of additional power supply, provides good heat dissipation from the display panel, thereby maintaining the standby temperature or operating temperature of the display panel to provide good display quality.

F‧‧‧Airflow

L‧‧‧Sunlight

50‧‧‧ Shell

52‧‧‧ openings

60, 80‧‧ ‧ diversion chamber

62, 82‧‧‧ air inlet

64‧‧‧air outlet

100, 200‧‧ ‧ vehicle dashboard

110, 210A, 210B, 210C‧‧‧ display panel

120, 220A, 220B‧‧‧ solar panels

130‧‧‧Control unit

140, 240‧‧‧ Piezoelectric actuators

141‧‧‧ first side

142‧‧‧elastic blades

143‧‧‧ second side

144‧‧‧ Piezo Pieces

146‧‧‧ fixed end

1 is a schematic view of a first embodiment of a vehicle instrument panel; FIG. 2 is a perspective view of a first embodiment of a vehicle instrument panel; FIG. 3 is a schematic view of a first embodiment of a piezoelectric actuator; A perspective view of a first embodiment of an electric actuator and a schematic diagram of a voltage signal; and FIG. 7 is a schematic view of a second embodiment of a dashboard for a vehicle.

The present invention provides a vehicle instrument panel with a piezoelectric actuator located on the display panel Corresponding position, and the piezoelectric actuator can operate by the energy generated by the solar panel to generate airflow, thereby reducing the temperature of the display panel and improving the display quality. The display panel preferably includes, but is not limited to, a liquid crystal display panel, an electrophoretic display panel, an organic light emitting display panel, etc., and the liquid crystal display panel preferably includes a Thin Film Transistor (TFT) liquid crystal display panel. Piezoelectric actuators preferably include piezoelectric materials having a converse piezoelectric effect, such as metal piezoelectric actuators, ceramic piezoelectric actuators, polymer piezoelectric actuators, and the like. .

1 is a schematic view of a vehicle instrument panel according to a first embodiment of the present invention. In order to clearly illustrate the relative positions and connection manners of the components in the vehicle instrument panel, some components are omitted, which is not intended to limit the creation. .

Referring to FIG. 1, the vehicular instrument panel 100 of the first embodiment of the present invention includes a display panel 110, a solar panel 120 for absorbing solar energy, a control unit 130, and a piezoelectric actuator 140. The display panel 110 is preferably configured to display driving information, such as driving speed, rotational speed, etc., and is disposed on the vehicle instrument panel 100 with the display surface facing outward to facilitate the provision of information. The solar panel 120 is preferably located in a region where the external light beam can be irradiated, and thus is preferably disposed on the surface of the vehicle instrument panel 100 such that an external light beam such as sunlight can illuminate the solar panel 120, thereby utilizing solar energy. The installation position of the piezoelectric actuator 140 corresponds to the installation position of the display panel 110, and the control unit 130 is preferably disposed at a position where the solar panel 120 and the piezoelectric actuator 140 can be electrically connected.

In order to clearly illustrate the contents of the present embodiment, the perspective view of FIG. 2 further illustrates a cross-sectional structure corresponding to the section line I-I of FIG. Specifically, the display panel 110 and the solar panel 120 are preferably disposed in the light-permeable housing 50, and the piezoelectric actuator 140 is preferably disposed in the opaque guiding cavity 60 to lift the dashboard of the vehicle. The overall look of 100. At the same time, piezoelectric Air is circulated between the position of the actuator 140 and the position of the display panel 110, that is, the air flow around the piezoelectric actuator 140 can drive the air around the display panel 110.

The control unit 130 of the present embodiment electrically connects the solar panel 120, and the piezoelectric actuator 140 is electrically connected to the control unit 130. When the sunlight L illuminates the solar panel 120, the solar panel 120 absorbs the solar energy, and the solar energy is converted into a current, so that the control unit 130 provides a voltage signal that can drive the piezoelectric actuator 140, and then transmits the voltage signal to the piezoelectric device. The actuator 140 is such that the piezoelectric actuator 140 operates.

The piezoelectric actuator 140 of the present embodiment can be deformed in accordance with a voltage signal from the control unit 130. The deformation process of the piezoelectric actuator 140 generates an air flow, and thus the heat dissipation performance of the display panel 110 can be increased by the air flow F provided by the piezoelectric actuator 140. In other words, since the piezoelectric actuator 140 of the present embodiment is disposed corresponding to the display panel 110, the airflow F provided by the piezoelectric actuator 140 passes through the display panel 110, thereby absorbing the thermal energy of the display panel 110 to lower the display panel. The temperature of 110 and its surroundings.

For example, referring to FIG. 1 and FIG. 2, the piezoelectric actuator 140 of the present embodiment is fixed to the flow guiding cavity 60 by a fixing end 146 by using a mechanism such as locking, adhesion, clamping, etc., and the fixed end. The opposite free ends of the 146 are oriented toward the display panel 110. The piezoelectric actuator 140 can provide the air flow F by the deformation of, for example, the free end swing mode, causing the air flow F to flow in the outer casing 50 and the flow guiding cavity 60. For example, the outer casing 50 has an opening 52. The air guiding cavity 60 has an air inlet 62 and an air outlet 64. The external air can enter the air guiding cavity 60 from the air inlet 62 and enter the outer casing 50 through the air outlet 64. The air passes through the display panel 110 and absorbs the thermal energy of the display panel 110 before being discharged from the opening 52. Therefore, the airflow F provided by the piezoelectric actuator 140 can lower the temperature of the display panel 110 as well as the ambient temperature.

The present invention is not limited to the above design. In other embodiments of the present invention, the display panel, the piezoelectric actuator, and the solar panel of the vehicle instrument panel may be directly disposed at an appropriate position of the vehicle body without being integrated into the outer casing 50. And the air flow can directly enter and exit from the opening of the vehicle body.

Since the voltage signal received by the piezoelectric actuator 140 of the first embodiment of the present invention is derived from the solar energy absorbed by the solar panel 120, the piezoelectric actuator 140 provides airflow when the vehicle instrument panel 100 is exposed to sunlight. The heat dissipation performance of the display panel 110 is improved. On the other hand, since the solar energy absorbed by the solar panel 120 is converted into electrical energy, the voltage signal generated by the piezoelectric actuator 140 can be provided. Therefore, the vehicle instrument panel 100 of the present embodiment can generate the airflow F without connecting to an additional electrical signal source. For example, the power supply system of the vehicle body for installing the vehicle instrument panel 100 does not need to be activated to provide additional power, using solar energy or Even the power storage unit (for example, a solar battery) can provide the energy required for the operation of the piezoelectric actuator 140, thereby reducing the shutdown temperature or the standby temperature of the display panel 110 when the vehicle is idle (not activated), thereby avoiding the display panel. 110 is overheated and is adversely affected.

On the other hand, referring to FIG. 1 , the flow guiding cavity 60 of the present embodiment is disposed corresponding to the display panel 110 , and the airflow F provided by the piezoelectric actuator 140 can be guided to the display panel 110 via the guiding cavity 60 to assist display. The heat dissipation of the panel 110. Moreover, as shown in FIG. 2, the air inlet 62 of the air guiding cavity 60 is preferably smaller than the air outlet 64 facing the display panel 110, so that the air guiding cavity 60 can make the airflow F provided by the piezoelectric actuator 140 smoother. The display panel 110 is grounded. In another embodiment, the vehicular instrument panel may not be provided with the flow guiding cavity 60, and the piezoelectric actuator 140 may be disposed at a proper position of the vehicle body corresponding to the display panel 110, or may be deformed by the piezoelectric actuator 140. The airflow F reaches the heat dissipation effect.

FIG. 3 is a schematic view of the piezoelectric actuator 140 of the first embodiment of the present invention. Referring to FIG. 3 , the piezoelectric actuator 140 includes a piezoelectric sheet 144 and an elastic blade 142 . The elastic blade 142 is connected to the pressure The electric piece 144 protrudes from the piezoelectric piece 144 in a direction away from the fixed end 146, and the wire 148 electrically connects the piezoelectric piece 144 and the control unit 130. Referring to FIG. 2 together, since the elastic blade 142 protrudes from the piezoelectric piece 144 toward the display panel 110, when the voltage signal supplied from the control unit 130 is transmitted to the piezoelectric piece 144 via the wire 148, the piezoelectric piece 144 is generated. The deformation in turn drives the oscillation of the elastic blade 142, and the airflow F is formed during the swinging process of the elastic blade 142.

Specifically, the elastic blade 142 of the present embodiment includes, for example, a metal blade, thereby enhancing the strength of the elastic blade 142 and the shock resistance effect. However, the elastic blade of the present invention is not limited to the above materials, and in other embodiments, the elastic blade may further comprise a polymer blade or a composite blade.

On the other hand, the piezoelectric sheet 144 of the present embodiment includes a ceramic piezoelectric material, a polymer piezoelectric sheet, and the like, and the deformation direction and the deformation amount of the piezoelectric sheet 144 change with the voltage signal. For example, the voltage signal of the embodiment is an alternating current signal, so that the deformation direction of the piezoelectric piece 144 is deformed in the opposite direction according to the positive/negative voltage to drive the left/right swing of the elastic blade 142.

4 to FIG. 6 are schematic diagrams and voltage signals of the piezoelectric actuator of the first embodiment in different states. Referring to FIGS. 4a and 4b, the voltage signal of the embodiment is, for example, a sinusoidal signal. When the voltage signal is positive (ie, the dot position in FIG. 4b), the piezoelectric sheet 144 is deformed toward the first side 141, for example. The elastic blade 142 is caused to swing toward the first side 141.

Referring to FIGS. 5a and 5b, when the voltage signal of the embodiment is reset to zero, the piezoelectric sheet 144 is restored to the original state, and the elastic blade 142 is brought to the original position.

Referring to FIGS. 6a and 6b, when the voltage signal of the embodiment is negative, the piezoelectric piece 144 is deformed toward the second side 143, thereby driving the elastic blade 142 to swing toward the second side 143. Therefore, when the solar panel 120 absorbs solar energy and the solar energy is converted into electric energy (for example, current) and supplied to the control unit 130, the control unit 130 generates a preset AC voltage signal to the pressure point actuator 140. The piezoelectric actuator 140 swings and provides an air flow based on the alternating voltage signal. Control unit 130 can be implemented, for example, as a processor, control circuit, or the like to provide the voltage signals required to drive piezoelectric actuator 140.

For example, when the piezoelectric actuator 140 of the present embodiment receives the voltage signal, the piezoelectric actuator 140 is swung ninety times per minute with an amplitude of, for example, 45 degrees, provided by the piezoelectric actuator 140. The flow rate of the gas stream can range from 0.5 meters per second to 0.7 meters per second. When the ambient temperature of the display panel is 40 degrees Celsius, and the sunlight illuminates the display panel at a power of 760 watts per square meter, a flow rate of 0.5 meters per second can reduce the temperature of the above display panel by about 50%.

The material of the piezoelectric sheet of the present invention is not limited to the ceramic voltage material described above. In other embodiments of the present invention, the material of the piezoelectric sheet further comprises a metal piezoelectric material or a polymer piezoelectric material. Further, in other embodiments of the present invention, the piezoelectric actuator may be formed by a single piezoelectric blade having an inverse piezoelectric effect, and the piezoelectric blade is formed by combining different metals. In other words, the resilient blade 142 can be integrated with the piezoelectric sheet 144 into a piezoelectric actuator 140 that is bonded by a different metal.

On the other hand, since the positive and negative changes of the voltage can drive the deformation of the piezoelectric actuator, the above-mentioned AC voltage signal is not limited to the sine wave signal, and may include a square wave signal in other embodiments.

However, the present creation is not limited to the above configuration. Fig. 7 is a schematic view of a vehicle instrument panel of a second embodiment of the present invention. Referring to FIG. 7, the vehicular instrument panel 200 of the second embodiment of the present invention includes display panels 210A, 210B, 210C, solar panels 220A, 220B, and piezoelectric actuator 240, wherein piezoelectric actuation in the cavity 80 is performed. The device 240 is only facing the display panel 210B, but the airflow provided by the piezoelectric actuator 240 can enter the cavity 80 from the air inlet 82, and then enter the outer casing 70 to form a gas circulation, thereby improving the heat dissipation efficiency of the display panels 210A, 210B, 210C. in other words, The position of the display panel of the present invention is not limited to the main flow direction of the airflow provided by the piezoelectric actuator, and the display panel can further improve the heat dissipation efficiency by the gas circulation formed by the airflow provided by the piezoelectric actuator.

On the other hand, referring to FIG. 7, the solar panels 220A and 220B of the second embodiment of the present invention are disposed on the outer surface of the vehicular instrument panel 200. Therefore, when the vehicle instrument panel 200 is exposed to sunlight, the solar panels 220A and 220B are also It absorbs sunlight and allows solar energy to be converted into electricity. Therefore, regardless of whether or not the vehicle instrument panel 200 is in operation, the piezoelectric actuator 240 can provide an air flow while the display panels 210A, 210B, 210C are illuminated to lower the temperature of the display panels 210A, 210B, 210C. The solar panel of the present invention is not limited to the above-mentioned installation position. In other embodiments, the solar panel may be disposed at other positions of the vehicle body to which the vehicle instrument panel is connected, which can be illuminated by sunlight, thereby providing a voltage signal to the piezoelectric device. Actuator.

It can be seen from the above that when the solar panel of the embodiment of the present invention receives solar energy, the solar panel and the control unit can provide a voltage signal to the piezoelectric actuator, and the piezoelectric actuator generates a deformation according to the operation of the voltage signal to provide an air flow. The air around the display panel can flow, thereby improving the heat dissipation performance of the display panel.

This creation has been described by the above embodiments, however, the above embodiments are for illustrative purposes only and are not intended to be limiting. Those skilled in the art will recognize that the embodiments specifically described herein may exemplify other modifications of the embodiments without departing from the spirit of the invention. Accordingly, the scope of the present invention also covers such modifications and is only limited by the scope of the appended claims.

Claims (10)

A vehicle instrument panel comprising: a display panel; a solar panel for absorbing a solar energy and converting it into a current; a control unit electrically connecting the solar panel, and the current is converted into a voltage signal; and a pressure An electric actuator is disposed corresponding to the display panel and electrically connected to the control unit, and the piezoelectric actuator is deformed according to the voltage signal to provide an air flow. The vehicle instrument panel of claim 1, wherein the piezoelectric actuator comprises a piezoelectric piece and an elastic blade, the elastic blade is coupled to the piezoelectric piece and protrudes from the piezoelectric plate toward the display panel. And the piezoelectric piece is deformed according to the voltage signal and drives the elastic blade to oscillate to form the air flow. The vehicle instrument panel of claim 2, wherein the elastic blade comprises a metal blade or a polymer blade. The vehicle instrument panel according to claim 2, wherein the piezoelectric sheet comprises a ceramic piezoelectric material, a metal piezoelectric material, or a polymer piezoelectric material. The vehicle instrument panel according to claim 1, wherein the piezoelectric actuator is a piezoelectric blade in which different metals are combined. The vehicle instrument panel of claim 1, wherein the voltage signal is an alternating current voltage signal. The vehicle instrument panel of claim 6, wherein the alternating current voltage signal comprises a square wave signal or a sine wave signal. The vehicle instrument panel of claim 1, further comprising a guiding cavity disposed corresponding to the display panel, the piezoelectric actuator being disposed in the guiding cavity, and the guiding cavity to the airflow Oriented to the display panel. The vehicle instrument panel of claim 8, wherein the flow guiding cavity has an air inlet and an air outlet The air inlet is smaller than the air outlet, and the air outlet faces the display panel. The vehicle instrument panel of claim 1, wherein the solar panel is disposed on an outer surface of the vehicle instrument panel.