Abstract:
An in-car temperature-controlling device for a car in its parked state uses a wireless remote control to remotely control a power-activating unit, an engine-starting unit, a window-activating unit and an AC-activating unit of the car, so as to adjust the car&#39;s in-car temperature. Its installation is easy and needs no structural changes to the car, so the car using the device can, in its parked state, have its in-car temperature prevented from being too high or too low. The in-car temperature-controlling device is characterized in contributing to convenience, safety, comfort and low costs, and is applicable to all existing and newly built cars.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Technical Field 
         [0002]    The present invention relates to temperature control for cars, and more particularly to an in-car temperature-controlling device for a car which is in its parked state, wherein the in-car temperature-controlling device is designed to be easily installed on the car without structural changes to the car. 
         [0003]    2. Description of Related Art 
         [0004]    Taiwan Patent No. I285161 provides a method for heat dissipation in a car. The method of the prior patent mainly involves a water tank, a pump, a control valve, nozzles and a remote control. In use, the remote control transmits a signal to the car&#39;s receiver so as to activate the pump of the water tank. The pump supplies cooling liquid to the nozzle so that the nozzles atomize the cooling liquid and spray it inside the car, thereby cooling the in-car environment quickly and making the driver feel comfortable. However, the sprayed cooling liquid may dampen papers in the car, putting important documents in risk. The sprayed cooling liquid may also have odor unpleasant to the passengers in the car. Besides, the patented device requires additional installation of the water tank and nozzles, which may aesthetically ruin the car&#39;s interior design and adds costs. 
         [0005]    Taiwan Patent No. I303224 provides a device for rapid cooling a car cabinet and a method for operating the device. The patent primarily uses a bottle, a pump, conducts and nozzles. The on-off valve disconnects the nozzles and the conducts. Then the pump accumulates pressure in the bottle. Afterward, the on-off valve is on to make the cooling liquid pressurized in the bottle to flow to the nozzles through the conducts and become atomized, thereby cooling the in-car environment quickly. However, similar to the patent discussed previously, the sprayed cooling liquid may dampen papers in the car, putting important documents in risk. The sprayed cooling liquid may also have odor unpleasant to the passengers in the car. Besides, the patented device requires additional installation of the water tank and nozzles, which may aesthetically ruin the car&#39;s interior design and adds costs. 
         [0006]    Taiwan Patent No. M370513 provides a heat radiator for a car cabinet. The patented device has solar panels, a top housing, an air-suction system and a bottom housing. The solar panels generate power to operate the air-suction system, which expels hot air from the car cabinet, thereby lowering the in-car temperature. However, the patented device is designed for cars having a sunroof, and is not applicable to cars without a sunroof. Additionally, installation of the patented device unavoidably breaks the structural integrity of the car, and may in turn induce problems such as water permeation and increased noise. 
         [0007]    Taiwan Patent No. M435998 provides a window-based solar heat-dissipating device. The patent includes a span seat, a wind unit and solar panels. The patent uses solar power to operate the fan system, thereby lowering the in-car temperature. However, the patented device is mounted on a car window, and may cause problems such as water permeation, noise, thievery and aesthetic degradation. Besides, its installation is relatively complicated, and the components left outside the window can increase wind drag acting on the car. 
         [0008]    Taiwan Patent No. M250827 provides a roof-mounted heat-dissipating device for a car. The patent primarily comprises a heat insulation barrel, a water pump, a temperature sensor, a reflective membrane and a heat sink. The condensed water from the AC refrigerant pipe is delivered to the car&#39;s roof, thereby lowering the in-car temperature. However, the patent requires structural changes of the car, including installation of the heat sink and the water pump at the car&#39;s roof, and may also cause problems related to water permeation, noise and aesthetic degradation. 
       SUMMARY OF THE INVENTION 
       [0009]    The primary objective of the present invention is to provide an in-car temperature-controlling device for a car in its parked state, which features for not requiring any structural changes of the dissipation and being easy to install. 
         [0010]    For achieving the foregoing objective, the disclosed in-car temperature-controlling device comprises: 
         [0011]    a wireless remote control, for a user to use to remotely transmit an operational signal; 
         [0012]    a receiver, installed in the car for receiving the operational signal from the wireless remote control and correspondingly sending a control signal; 
         [0013]    a controller circuit board, for receiving and processing the control signal output by the receiver and outputting the processed control signal as a control command; and 
         [0014]    a motherboard, for receiving the control command output by the controller circuit board and being electrically connected to a power-activating unit, an engine-starting unit, a window-activating unit and an AC-activating unit of the car, wherein the motherboard, according to the control command, controls the power-activating unit, the engine-starting unit, the window-activating unit and the AC-activating unit to operate in order. 
         [0015]    Preferably, the receiver, the controller circuit board and the motherboard are housed in a control box. 
         [0016]    Preferably, the wireless remote control is provided with four control buttons, each for turning on and off one of the power-activating unit, the engine-starting unit, the window-activating unit and the AC-activating unit. The wireless remote control is further provided with an automatic control button for activating an IC-activating unit that makes the power-activating unit, the engine-starting unit, the window-activating unit and the AC-activating unit automatic start in order. 
         [0017]    Preferably, transmission of the operational signal between the wireless remote control and the receiver is achieved by using one of 3G, 4G, WIFI, Bluetooth and infrared transmission. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  schematically shows the structure of the present invention. 
           [0019]      FIG. 2  is a schematic drawing illustrating the use of the present invention. 
           [0020]      FIG. 3  is a flowchart of the operation of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0021]    Referring to  FIG. 1  through  FIG. 3 , in the present invention, an in-car temperature-controlling device for a car in its parked state primarily comprises a wireless remote control  11 , a receiver  12 , a controller circuit board  13  and a motherboard  14 . 
         [0022]    The wireless remote control  11  is for a user to operate so as to remotely send an operational signal. 
         [0023]    The receiver  12  is installed in the car  20 , and is composed of a chip receiver device (not shown). The receiver  12  serves to receive the operational signal transmitted by the wireless remote control  11 , and correspondingly output a control signal. Therein, the transmission of the operational signal between the wireless remote control  11  and the receiver  12  may be one of 3G, 4G, WIFI, Bluetooth and infrared transmission. 
         [0024]    The controller circuit board  13  is also installed in the car  20 , and serves to receive the control signal output by the receiver  12 . The controller circuit board  13  determines and re-encodes the control signal it receives and correspondingly outputs a control command. 
         [0025]    The motherboard  14  is also installed in the car  20 , and serves to receive the control command output by the controller circuit board  13 . The motherboard  14  is electrically connected to a power-activating unit  21 , an engine-starting unit  22 , a window-activating unit  23  and an AC-activating unit  24  of the car  20 , so that the motherboard  14  can control the power-activating unit  21 , the engine-starting unit  22 , the window-activating unit  23  and the AC-activating unit  24  to work in order in accordance with the control command. 
         [0026]    In the present embodiment, the receiver  12 , the controller circuit board  13  and the motherboard  14  are all housed in a control box  15 , which is settled at an appropriate site near the driver&#39;s seat in the car. The motherboard  14  is electrically connected to the power-activating unit  21 , the engine-starting unit  22 , the window-activating unit  23  and the AC-activating unit  24  of the car through concealed wiring circuits The wireless remote control  11  is provided with four control buttons A, B, C, D each for turning on and off one of the power-activating unit  21 , the engine-starting unit  22 , the window-activating unit  23  and the AC-activating unit  24 . 
         [0027]    To use the disclosed device in summer, a user may be at a place up to  50  meters from where the car is parked and press the control button A on the wireless remote control  11  corresponding to the power-activating unit  21 . At this time, the wireless remote control  11  sends out an operational signal to the receiver  12  for powering on the car. The operational signal then, through the controller circuit board  13  and the motherboard  14  successively, controls the power-activating unit  21  of the car  20  to operate, so that the 12-V power source (a battery) of the car  20  turns on the car  12 . 
         [0028]    The user can then press the control button B on the wireless remote control  11  corresponding to the engine-starting unit  22 . At this time, the wireless remote control  11  sends out an operational signal to the receiver  12  for starting the car&#39;s engine. The operational signal then, through the controller circuit board  13  and the motherboard  14  successively, controls the engine-starting unit  22  of the car  20  to operate, so that the engine of the car  20  is started and drives the generator to generate power. At this time, all power-consuming units in the car  20  are well electrified. 
         [0029]    Afterward, the user presses the control button C on the wireless remote control  11  corresponding to the window-activating unit  23 . At this time, the wireless remote control  11  sends out an operational signal to the receiver  12  for activating windows of the car  20 . The operational signal then, through the controller circuit board  13  and the motherboard  14  successively, controls the window-activating unit  23  of the car  20  to operate, so that the main switch of the power-operated windows turns on a parallel-connected circuit to simultaneously wind down the four windows of the car  20  for an appropriate distance (about 5 cm). With natural thermal convection, these gaps allow the muggy air inside the car  20  to flow out to the exterior and allow the fresh air to come into the car  20 , thereby lowering the in-car temperature quickly. 
         [0030]    Then the user presses the control button D on the wireless remote control  11  corresponding to the AC-activating unit  24 . At this time, the wireless remote control  11  sends out an operational signal to the receiver  12  for activating the air conditioner. The operational signal then, through the controller circuit board  13  and the motherboard  14  successively, controls the AC-activating unit  24  of the car  20  to operate and turn the fan to the highest level. At this time, the strong cold wind has convection with the hot air remaining in the car  20 , thereby further lowering the in-car temperature. 
         [0031]    At last, when the user opens the door and enters the car  20 , his/her opening the door further draws the warm air in the car  20  out to the exterior. After the user closes the door and simultaneously winds up the four windows, the in-car temperature can be cooled to about 26° C., making the in-car environment more comfortable. 
         [0032]    The disclosed device configured as above provides the following advantages: 
         [0033]    1.Comfort: in hot summer, when a car is parked under outdoor sunlight, the in-car air temperature can become hot and muggy rapidly. Once the driver opens the door, the hot air will hit him/her directly as great discomfort. With the present invention, the driver can stand away from the car up to 50 meter and easily lower the in-car temperature to about 26° C. by operating the wireless remote control four times, thus providing a much more comfortable in-car environment as compared to the case where the disclosed device is not used. 
         [0034]    2. Safety: the exiting car in-car temperature-controlling devices achieve heat dissipation by using car windows, sunroofs, water mist and water flow, and bring about problems related to rainwater permeation, noise, car structural changes, gaps and thievery. Opposite to the prior-art devices, the present invention does not require any car structural changes, and allows the driver to operate the wireless remote control to wind down the four car window by 5 cm to provide effective heat dissipation on the principle of thermal convection. This prevents from thievery, and even a thief tries to enter the car, the driver can use the wireless remote control to turn off the car&#39;s engine-starting unit rapidly. Thus, the disclosed device contributes to safe use. 
         [0035]    3.Convenience: in a hot parking lot, without the disclosed device, the driver sitting in the furnace-like can only open the four windows to make hot air flow out, and drive the car to a cool place to wait for natural cooling of the in-car environment. The operation is thus very inconvenient. With the disclosed device, the driver only needs to install the receiver, the microcontroller circuit board and the motherboard integrated in a single small control box, without having esthetic impact on the car&#39;s interior, and he/she can stand at a remote, cool place to use the wireless remote control to operate the car&#39;s power-activating unit, engine-starting unit, window-activating unit and AC-activating unit through the concealed circuit, thereby lowering the in-car temperature to about 26° C. Thus, the disclosed device contributes to convenient use. 
         [0036]    4. Low costs: the components used in the disclosed device, including the wireless remote control, the receiver, the controller circuit board and the motherboard, are all scandalized components and are inexpensive. Especially, in the case of bulk purchase, the costs can be even lowered. This makes the disclosed device more economic and more competitive than the existing patented devices. 
         [0037]    In addition to the four control buttons A, B, C, D each corresponding to one of the four control units, the wireless remote control  11  of the present invention may further have an automatic control button E. When pressed, the automatic control button E transmits an operational signal that activates an IC-activating unit (not shown). The IC activating unit allows the user to make the power-activating unit  21 , the engine-starting unit  22 , the window-activating unit  23  and the AC-activating unit  24  automatically start in order through a one-touch operation. Moreover, in cold, winter days, the user can operate the disclosed device similarly to make the air conditioner system send out warm air and blow air downward, so as to gradually increase the in-car temperature and make passengers in the car feel warm and comfortable.