Patent Application
20120153701
1. Field of the Invention
The present invention relates to a vehicle seat back, and more specifically to a ventilative vehicle seat back.
2. Description of the Prior Art
To enhance the comfort of conventional vehicle seat backs, a vehicle seat back is developed to have a foam layer and a leather reclining surface. Said vehicle seat back is comfortable to be reclined, but it fails to cool the reclining surface when a user reclines on said vehicle seat back.
To solve the above-mentioned problem, vehicle seat backs as shown in TWM261396 and TWM373838 were brought into the market. Said vehicle seat backs can solve the heat problem occurred when a user's back touching a vehicle seat back, but said patents either require an additional power supply to drive a fan so as to generate an airflow, or need to be equipped with an extra wind pipe in a vehicle. Consequently, the hot or cool air can be lead into an air channel which is disposed on the vehicle seat backs. However, said patents have the following disadvantages:
1) It requires multiple devices such as fan, motor, and the like to generate airflow, so that the structure of said vehicle seat backs becomes more complicated.
2) Correspondingly, it needs to install additional devices to generate hot or cool air at the said seat backs. Therefore, users have to pay for the installation fee of the devices, or the fee may be transferred to the selling price of the vehicle. In this way, said vehicle seat backs are not competitive in price, and further fails to be affordable for all users.
3) An additional wind pipe, fan or other components connected to said seat backs will reduce the in-vehicle space and further have a bad effect on the design integrity of a vehicle.
4) Said patents rely on additional electric power to drive a fan. If an additional battery is used for power supply, it needs extra charge for battery and creates a recycling problem. If a vehicle battery is used for power supply, it may disturb the stability of the voltage for other devices of the vehicle.
The present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages.
The main object of the present invention is to provide a ventilative vehicle seat back without power driven systems.
Another object of the present invention is to provide a ventilative vehicle seat back which is environmentally friendly.
Another object of the present invention is to provide a ventilative vehicle seat back which has a simple structure without additional costs for installation.
To achieve the above and other objects, a ventilative vehicle seat back of the present invention includes a main body, at least one air channel, and a deflector. The main body has a reclining surface, two side surfaces, and a first connecting portion. Plural air holes are formed on the reclining surface. One of the side surfaces is formed with at least one inlet, and the inlet communicates with the air channel of the main body. The deflector has a second connecting portion. The second connecting portion is connected to the first connecting portion, so that the deflector can deflect the cool air, which is blown from a vehicle air conditioner, to the inlet of the side surface. Then, the cool air in the air channel is expelled from the air holes so as to cool down the heat accumulated when a user's back is touching the seat back. Similarly, the deflector can deflect the warm air, which is blown from the vehicle air conditioner, to the inlet of the side surface so as to warm up the user's back in the cold seasons.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
Please refer to
Further, the foam layer 3 is formed with a flat room. Preferably, the flat room is divided into plural air channels 31 by plural L-shaped partitions A. The air channels 31 communicate with the inlet 44. In the present embodiment, the inlet 44 extends from one end of the air channels 31 so that the inlet 44 is formed in a shape like a flat groove. The shape can provide a good deflecting effect.
The top surface 43 of the main body can be disposed with a head portion 11 for a user's head to recline. The reclining surface 42 further comprises plural air holes 45 which communicate with the air channels. Preferably, the air holes 45 extend through the seat cover 4 and the foam layer 3 with a diameter of at least 1 millimeter. Thereby, air, which is blown from a vehicle air conditioner, flows through pores of the foam layer 3 or the air holes 45. The air is then expelled from the air holes of the reclining surface, and is blown toward a user's back which reclines on the reclining surface 42.
Moreover, the top surface 43 of the main body 1 is formed with one or more outlets 431. The outlet 431 communicates with another end of the air channels. Preferably, the main body 1 further comprises one or more lids 432. The quantity of the lids 432 is corresponding to the quantity of the outlets 431. The lid 432 can be detachably or pivotally fixed on one side of the outlet 431. Preferably, one end of the lid 432 is pivotally fixed near one side of the outlet 431, so that another end of the lid 432 can pivot and cover the outlet 431. When cool air contacts the user's back, warm air on the seat back will then be circulated and expelled through the outlet 431. Thereby, the cool air from the inlet 44 is exchanged with the warm air which is accumulated from the user's back. The warm air is then expelled from the outlet 431. The reclining surface 42 touched by the user's back for a long time can be cooled down by the circulation of the cool air. In the cold seasons, the lid 432 can be closed to cover on the outlet 431 so as to keep warm air in the air channels 31 and the air holes 45. In this way, the user's back can be kept warm.
The deflector 5 is a rectangle plate which is corresponding to the inlet 44. The deflector 5 has a second connecting portion. The second connecting portion is connected to the first connecting portion. The second connecting portion is an axle, and the first connecting portion is an axial hole for the axle to pivotally connect thereto. Thereby, the deflector 5 is disposed pivotally at one side of the inlet 44. Preferably, a deflecting slot 6 is defined between the deflector 5 and the side surface 41. The inlet 44 is located at one side of the deflecting slot 6 which is away from the reclining surface 42. Therefore, when air is blown from the air conditioner to backseats, the air is then lead to the inlet 44 by the deflector 6. The air then flows through the air channels 31 and comes out from the air holes 45. In this way, the cool air can be circulated inside of the vehicle seat back so as to avoid a hot and stuffy feeling when the user's back is reclining on the seat back.
In present embodiment, the deflector 5 is movable between a first position and a second position, so that the angle between the inlet 44 and the deflector 5 can be changed by demand. Thereby, the amount of cool air, which is lead into the inlet 44, can be adjusted. Preferably, the first connecting portion is connected pivotally to the second connecting portion, so that the second connecting portion is able to pivot with respect to the first connecting portion about an axle.
Please refer to the
Please refer to the
Accordingly, one of the side surfaces 41 of the vehicle seat back of the present invention is formed with at least one inlet 44. And a deflector which can pivot is disposed nearby the inlet 44. The present invention has the following advantages:
1) It has a temperature adjustment effect on the vehicle seat back without additional electric power. Therefore, there's no problem about the recycling of used battery and the voltage instability.
2) It includes a deflector, which is connected pivotally to the vehicle seat back, and a flat inlet, which is formed one a side surface of the vehicle seat back. In other words, it has a simple structure so that it doesn't require additional expense or costly installation fee.
3) The deflector 5 is used for blocking cool or warm air from a vehicle air conditioner and leading the air to circulate in the vehicle seat back. In other words, it recycles the air from the conditioner without consuming extra energy, so it is environmentally friendly.
4) Correspondingly, the deflector 5, which is disposed on the side surface of the seat back, can be closed and become a part of the seat back without occupying any in-vehicle space. And it doesn't have a bad effect on the design integrity of a vehicle.
From the above mentioned, it's obvious that the ventilative vehicle seat back of the present invention can overcome the disadvantages of the prior art with its simple structure.
