Car seat ventilation system

Abstract

A ventilation device for a car seat, the car seat defining an installation space and having a plurality of ventilation holes communicating with the installation space. The ventilation device includes a first fan adapted for installation in the installation space, and at least one second fan adapted for installation in the installation space and informationally connected to the first fan. The first fan includes an operating body and a control module connected to the operating body and used to generate a drive signal to drive the operating body to introduce airflow into the ventilation holes. The second fan includes an operating module for operating to introduce airflow into the ventilation holes, and a connecting line connected between the operating module and the control module, used to transmit the drive signal to the operating module, causing the operating module and the operating body to rotate synchronously.

Description

[Technical Field]

[0001] This invention relates to an equipment for automobile seats, and more particularly to a ventilation device for automobile seats. [Previous Technology]

[0002] In recent years, car seats have increasingly emphasized passenger comfort, especially addressing the stuffiness caused by prolonged sitting. Cooling fans are typically installed under the seat cushion to create airflow between the passenger and the cushion, expelling accumulated heat and moisture. To achieve a certain level of effectiveness, multiple cooling fans may be required. However, since these fans are usually modularly manufactured, each has its own independent power supply and control system. Therefore, when controlling multiple fans, issues such as asynchronous start-up and shutdown times or inconsistent airflow are inevitable. When multiple cooling fans cannot coordinate properly, it will inevitably have a negative impact on improving the comfort of the car seat. [Summary of the Invention]

[0003] Therefore, the object of the present invention is to provide a ventilation device for a car seat that can properly match multiple cooling fans to optimize the ride comfort.

[0004] Thus, the present invention provides a ventilation device for a car seat, the car seat defining an installation space and having a plurality of ventilation holes communicating with the installation space. The ventilation device for the car seat includes a first fan adapted to be disposed in the installation space, and at least one second fan adapted to be disposed in the installation space and informationally connected to the first fan.

[0005] The first fan includes an operating body and a control module connected to the operating body for generating a drive signal that drives the operating body to operate and introduces airflow into the ventilation hole.

[0006] The at least one second fan includes a rotation module for operating to introduce airflow into the ventilation holes, and a connection cable connecting the rotation module and the control module of the first fan. The connection cable is used to transmit the drive signal of the control module to the rotation module, so that the rotation module rotates synchronously with the operating body.

[0007] The advantage of the present invention is that the operation of the first fan and the at least one second fan can be controlled by the control module at the same time, so there will be no time difference between the opening and closing of the first fan and the at least one second fan, or the air volume will be different. Thus, the effect of optimizing the comfort of the car seat can be achieved as expected according to the existing design.

Implementation Method

[0008] Before the present invention is described in detail, it should be noted that similar elements are represented by the same numbers in the following description.

[0009] Referring to Figure 1, a first embodiment of the ventilation device for a car seat according to the present invention is shown. The car seat 9 defines an installation space 90 and includes a seat cushion 91 having a plurality of ventilation holes 910 communicating with the installation space 90. This first embodiment includes a first fan 1 adapted to be installed in the installation space 90, and a plurality of second fans 2 adapted to be installed in the installation space 90 and connected to the first fan 1. The number of the first fan 1 and the second fans 2, as well as their positions relative to the ventilation holes 910, can be freely configured according to the type of the car seat 9 and the heat dissipation requirements. In this first embodiment, the configuration is described with the first fan 1 and two second fans 2 respectively corresponding to three ventilation holes 910, but in actual implementation, it is of course not limited to this.

[0010] The first fan 1 includes an operating body 11 and a control module 12 connected to the operating body 11 and used to generate a drive signal to drive the operating body 11 to operate and introduce airflow into the ventilation hole 910. Specifically, the operating body 11 is an assembly of a fan frame that can operate to generate airflow and rotating elements such as fan blades or impellers, while the control module 12 is an assembly of a drive circuit board and components such as a control chip that can emit control signals.

[0011] The second fan 2 includes a rotating module 21 for operating to introduce airflow into the ventilation hole 910, and a connecting line 22 connecting the rotating module 21 and the control module 12 of the first fan 1. The rotating module 21, similar to the operating body 11 of the first fan 1, is an assembly of rotating elements, including a fan frame that generates airflow, and fan blades or impellers. The connecting line 22 transmits the drive signal from the control module 12 to the rotating module 21, causing the rotating module 21 to rotate synchronously with the operating body 11. In other words, the second fan 2 only has rotating components such as a fan frame, fan wheel, and magnet ring, and does not have a control circuit board for driving and controlling its operation. That is, in this first embodiment, the operation of the operating body 11 and the rotating module 21 is synchronously controlled through the control module 12 of the first fan 1.

[0012] Referring to Figure 2 and in conjunction with Figure 1, the drive signal generated by the control module 12 of the first fan 1 includes a first steering information for controlling the operating body 11 to rotate in a first rotation direction, and at least a second steering information for controlling the operating module 21 of the second fan 2 to rotate in a second rotation direction. Since this first embodiment primarily addresses the heat dissipation needs of the seat cushion 91 for seating, the first rotation direction and the second rotation direction are the same, causing the first fan 1 and the second fans 2 to operate together to generate a heat dissipation effect.

[0013] Furthermore, for heat dissipation designs targeting specific heat dissipation components or guiding airflow, the drive signal can also make the first rotation direction and the second rotation direction opposite to each other. Accordingly, the first fan 1 and the second fans 2 can cooperate with each other and be configured in positions where they can generate circulation. Accordingly, the differences in blowing and suction of the first fan 1 and the second fans 2 can be controlled according to different positional requirements of "blowing" and "suction circulation". For example, the ventilation hole 910 can also be configured in a specific position that will not be obstructed when people are sitting, and the first fan 1 or the second fan 2 that can "suction" by changing its rotation direction can be configured in the ventilation hole 910. This can cooperate with the first fan 1 or the second fan 2 that "blows" to achieve airflow circulation, thereby optimizing the overall heat dissipation effect of the first embodiment.

[0014] Referring to Figures 3 and 4, a second embodiment of the ventilation device for a car seat of the present invention is shown. The difference between this second embodiment and the first embodiment is that the second embodiment includes a plurality of the aforementioned second fans 2. The drive signal includes a plurality of second steering information for controlling the operation modules 21 of the second fans 2, and additional steering information for controlling one of the operation modules 21 to rotate in a direction opposite to the second rotation direction. That is, in this second embodiment, the second fans 2 can be configured to rotate in different directions through the additional steering information, thereby meeting the heat dissipation needs of the second fans 2 which may be located in different positions. Specifically, as shown in Figure 4, the second fans 2 located on the seat cushion 91 can rotate in a different direction than the second fan 2 located on a seat back 92 connected to one of the seat cushions 91. This difference in blowing and sucking achieves the effect of airflow circulation in the seating area.

[0015] In summary, the ventilation device for the car seat of the present invention can, through the control module 12 of the first fan 1, control the operation of the first fan 1 and the second fans 2 in an integrated manner according to the heat dissipation requirements. In addition to achieving synchronized operation, it can also ensure the overall operation of the first fan 1 and the second fans 2, so as to effectively achieve the expected heat dissipation effect. Therefore, the purpose of the present invention can be effectively achieved.

[0016] However, the above description is only an embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the patent specification shall still fall within the scope of the patent of the present invention. [Simplified Explanation of the Diagram]

[0017] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG1 is a cross-sectional view illustrating a first embodiment of the ventilation device for a car seat of the present invention; FIG2 is a block diagram illustrating a control module of a first fan in the first embodiment; FIG3 is a block diagram similar to FIG2 illustrating a second embodiment of the ventilation device for a car seat of the present invention; and FIG4 is a cross-sectional view similar to FIG1, illustrating the operation of the second embodiment in conjunction with FIG3.

Claims

1. A ventilation device for a car seat, the car seat defining an installation space and having a plurality of ventilation holes communicating with the installation space, the ventilation device comprising: a first fan adapted to be disposed in the installation space and including an operating body, and a control module connected to the operating body and used to generate a drive signal for driving the operating body to operate and introduce airflow into the ventilation holes; and at least one second fan adapted to be disposed in the installation space and informationally connected to the first fan, and including a rotation module for operating to introduce airflow into the ventilation holes, and a connecting line connecting the rotation module and the control module of the first fan, the connecting line being used to transmit the drive signal of the control module to the rotation module, such that the rotation module rotates synchronously with the operating body; wherein... The drive signal generated by the control module of the first fan includes a first direction information for controlling the operating body to rotate in a first rotation direction, and at least a second direction information for controlling the operating module of the second fan to rotate in a second rotation direction.

2. The ventilation device for the car seat as described in claim 1, wherein, The first rotation direction is the same as the second rotation direction.

3. The ventilation device for the car seat as described in claim 1, wherein, The first rotation direction is opposite to the second rotation direction.

4. The ventilation device for a car seat as described in any one of claims 1 to 3, comprising a plurality of the second fans, the drive signal comprising a plurality of second steering information for controlling the operation modules of the second fans respectively, and additional steering information for controlling at least one of the operation modules to rotate in a direction opposite to the second rotation direction.

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