JP4192673B2 - Vehicle seat with air purifying function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat having an air cleaning function. More specifically, the present invention relates to a vehicle seat that cleans the air in the passenger compartment by photocatalysis.
In the present specification, the “air cleaning function” refers to a function of deodorizing and sterilizing air in the passenger compartment.
[0002]
[Prior art]
Conventionally, in order to remove unpleasant odors such as interior materials and adhesives in the passenger compartment, cigarette odor due to smoking by passengers, mold and bacteria generated in the car, open windows, activated carbon It was supported by using adsorbents such as.
However, it is difficult to open the window on rainy days, and the adsorbents differ depending on the adsorbent components, so multiple types of adsorbents can be used to remove all odors and bacteria. Needed. For this reason, installing a plurality of containers equipped with adsorbents occupies more space in the vehicle compartment than necessary, and has a problem in terms of cost.
[0003]
For this reason, recently, it has been proposed to clean the air in the passenger compartment by photocatalysis. As an example, a deodorizing means has been proposed in which a bag-like cover coated with a photocatalyst is placed on the surface of an automobile seat in order to remove the smell of a new automobile (see Patent Document 1). According to this deodorizing means, the odor peculiar to the time of the new vehicle in the vehicle interior is removed by the photocatalytic action of the bag-like cover placed on the vehicle seat until the new vehicle is delivered to the customer. In principle, the bag-like cover is removed when the new vehicle is delivered to the customer.
According to the deodorizing means, many different types of components can be removed by photocatalytic action, and there is no need to install many different types of adsorbents. That is, the photocatalyst can decompose organic chemical substances, harmful gas phase substances (NOX, SOX, etc.), bacteria, and the like that are difficult to decompose using light.
[0004]
[Patent Document 1]
JP 2000-175999 A
[Problems to be solved by the invention]
However, in the deodorizing means described above, the light source for performing the photocatalytic action is sunlight. For this reason, in the case of rain and cloudy weather or at night, there is a problem that the light source is insufficient and a sufficient effect cannot be obtained. In addition, under the current situation where the effects of ultraviolet rays on the human body are widely known, there are cases where vehicles are equipped with windows that use UV-cut glass, and they are scheduled on sunny days and in the daytime. There is also a problem that the effect that has been made can not be sufficiently raised.
In the deodorizing means, it may be considered that an ultraviolet light source is separately installed in the passenger compartment. In this case, although the above-mentioned problem is solved, there is a possibility that a seated person may be irradiated with an ultraviolet light source for irradiating the photocatalyst of the bag-like cover placed on the seat, which has an effect on the human body. Therefore, the problem that it is not preferable arises.
Moreover, since the bag-like cover provided with the photocatalyst of the deodorizing means is normally removed when a new vehicle is delivered to a customer, there is a problem that the air purifying function in the subsequent passenger compartment is not performed.
[0006]
The present invention has been made in order to solve the above-described conventional problems, and the problem to be solved by the present invention is to allow photocatalysis to be performed in a sheet through which an air flow in a passenger compartment can pass, The purpose is to perform an air purifying function that is less affected by the human body regardless of the weather or day and night.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a vehicle seat having an air cleaning function according to the first invention of the present invention takes the following means.
That is, the vehicle seat with an air cleaning function according to the first aspect of the present invention is installed in the vehicle interior, Ri vehicle seat der capable of passing the cabin air stream, placing the pad member to the frame member After that, these are covered with a breathable seat cover.
The vehicle seat has a seat back that can be tilted with respect to the seat cushion. In the vehicle seat, a photocatalyst layer and a coating layer are formed on a surface of the seat back opposite to the side on which the seated person contacts, and an ultraviolet light source capable of irradiating ultraviolet rays toward the photocatalyst layer is provided on the seat. is disposed to the rear of the frame member, characterized in Tei Rukoto.
Here, the surface opposite to the occupant side contacting the pad member, which occupant when seated in the vehicle seat, means less susceptible components influence of the seated person moves relative frictional movement It is. Moreover, a coating layer means the thing which has a function which improves the protection of the sheet | seat which is a coating object, and the adhesiveness of a photocatalyst layer and a sheet | seat.
[0008]
According to the first invention, the photocatalyst layer and the coating layer are formed on the vehicle seat, and the ultraviolet light source is installed. For this reason, when the air flow in the passenger compartment passes through the seat, the air flow is cleaned by the photocatalytic action performed by irradiating the photocatalyst layer and the coating layer with the light source.
The irradiation of the ultraviolet light source for causing a photocatalytic action in the above, to be done inside the sheet, it is possible to further reduce the influence of the seated person such as occupant of the human body. Further, since it has an ultraviolet light source to the inner sheet, regardless weather, day and night, it is possible to exhibit the air cleaning function.
[0009]
Furthermore, in this first invention, the photocatalyst layer and the coating layer are formed on the surface of the pad member opposite to the side on which the seat occupant comes into contact, and therefore are less affected by the movement of the seat occupant, Thus, a stable air cleaning function can be performed. That is, when the photocatalyst layer is formed on the side where the seated person of the pad member comes into contact, it is easily affected by the movement of the seat seated person, so that the photocatalyst layer may be peeled off and the photocatalytic effect may be reduced in a short time.
The vehicle seat according to the first aspect of the invention is usually an existing fixture of the vehicle, and is equipped with equipment for performing photocatalysis using the space of the fixture. There is no need for a separate space for air cleaning.
[0010]
Next, the vehicle seat having the air cleaning function according to the second aspect of the present invention takes the following means.
That is, in the vehicle seat having the air cleaning function according to the first aspect of the invention, air conditioner outlets for forcibly convection of air are provided at the front and rear of the passenger compartment.
According to the second invention, in addition to the function according to the first invention, the following function is provided. That is, since the air flow in the seat back is forcibly performed by the air conditioner provided in the vehicle interior, the seat air cleaning function can be further enhanced. For this reason, it is also possible to reduce the installation area of a photocatalyst layer.
[0011]
[0012]
Next, the vehicle seat having an air cleaning function according to the third aspect of the present invention takes the following means.
That is, in the vehicle seat having the air purifying function in the first invention or the second invention, the ultraviolet light source is an ultraviolet light emitting diode, and the vehicle power is constantly supplied.
According to the third invention, in addition to the functions of the first invention or the second invention, the following functions are provided. In other words, since the vehicle power supply is constantly supplied to the ultraviolet light emitting diode, the vehicle interior is always cleaned. Therefore, the air in the passenger compartment can be kept clean at all times. In particular, since air purification is always performed even when the vehicle is not used, an unpleasant odor when getting into the vehicle can be suppressed.
Even when the air conditioner is not operating, air circulation is ensured from the difference in heat distribution caused by heat sources such as humans and ultraviolet light-emitting diodes in the vehicle.
Further, by using an ultraviolet light emitting diode as the ultraviolet light source, it is possible to sufficiently cope with the battery power provided in the vehicle at all times. That is, it is possible to prevent so-called battery exhaustion.
[0013]
Furthermore, the vehicle seat provided with the air cleaning function according to the present invention can take the following means in addition to the above means.
First, in the vehicle seat having the air purifying function according to each of the above inventions, a pad member is provided as a seat constituent part, and a photocatalyst layer is applied to a surface opposite to a side where a seated person contacts the pad member. Measures can be taken.
According to the above means, since the photocatalyst layer can be formed only by applying it to the surface of the pad member, workability is good and productivity is high.
[0014]
Next, in the vehicle seat having the air cleaning function according to each of the inventions described above, there is a frame member that receives a pad member as a seat constituent part, and means for installing an ultraviolet light source on the frame member can be taken.
According to the above means, since the ultraviolet light source is installed on the frame member that receives the pad member coated with the photocatalyst layer, the ultraviolet light source can be effectively combined with the formation of the photocatalyst layer. .
[0015]
Next, in the vehicle seat having the air purifying function of each of the inventions described above, the seat includes a seat cushion and a seat back, and the photocatalyst layer and the ultraviolet light source can take at least means for setting the seat back.
According to the above means, the photocatalytic action for cleaning the air in the passenger compartment is performed at the seat back which is normally in an upright state at least in the passenger compartment and through which the air flow in the passenger compartment passes well. be able to.
In particular, in a vehicle equipped with an air conditioner such as an air conditioner, the air flow that circulates in the passenger compartment passes particularly well through the seat back portion, so that air cleaning is performed more efficiently.
Further, when the vehicle is a seat back of a front seat in a sedan type automobile, the seat back is at a substantially central position in the passenger compartment, so that the air cleaning function is most efficiently performed.
[0016]
Next, in the vehicle seat having the air cleaning function according to each of the above inventions, a photocatalyst layer is formed on a component part inside the seat, and an ultraviolet light source for irradiating the photocatalyst layer is installed on a component part inside the seat. Measures can be taken.
According to the above-described means, the influence on the human body of the occupant such as the seated person can be reduced more reliably. Further, since the ultraviolet light source is provided inside the seat, the air cleaning function can be exhibited regardless of the weather or day and night.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Embodiments of a vehicle seat having an air cleaning function according to the present invention will be described below with reference to the drawings. The present embodiment is a case of a vehicle seat mounted on a sedan type passenger car when the vehicle is an automobile. This is also the case of a vehicle seat in which a photocatalyst layer and a coating layer are formed inside the vehicle seat and an ultraviolet light source is installed as a light source capable of irradiating the photocatalyst layer. FIG. 1 shows an overview of the passenger compartment. FIG. 2 shows an overview of the air outlet in the passenger compartment. FIG. 3 is a perspective view showing the overall configuration of the vehicle seat with a part thereof broken. FIG. 4 is a cross-sectional view of a main part of the vehicle seat.
[0018]
As shown in FIG. 1, the vehicle compartment A sedan type passenger vehicles, front seat 5 is disposed in the front position of the left side as viewed in FIG. 1, Li Ya sheet 7 is disposed on the right side of the rear position ing. The front seat 5 is formed as a so-called separate type in which the driver seat at the right side and the passenger seat at the left side are formed in the traveling direction. The rear seat 7 is formed as a so-called bench seat type in which the left and right are integrated.
A side door 3 is provided on the side of the vehicle interior A. The side door 3 includes a front door 3a and a rear door 3b. An instrument panel 1 is provided at the front position. As shown in FIG. 2, the instrument panel 1 includes a center register 1a, a side register 1b, a foot outlet 1c, and a defroster 1d as outlets of the air conditioner. Since the air outlets of these air conditioners normally blow out air so as to provide an appropriate circulating air flow for the occupant, the air flow is directed to the front seat 5 and the rear seat 7 installed in the vehicle interior A. It also circulates.
[0019]
Normally, the airflow is circulated by the air conditioner with priority given to the front seat 5 side, so that the front seat 5 is in a particularly well-circulated position. As well shown in FIG. 1, the seat back 20 of the front seat 5 is located at a substantially central position in the vehicle interior A and is in a standing state, so that the airflow is more circulated.
Although FIG. 2 shows the case of the arrangement of the general air conditioner outlets, it is not always necessary to equip all these outlets, and any one of them may be provided. However, from the viewpoint of the effect of the photocatalyst described later, in order to generate an appropriate air flow for the occupant and the vehicle seat, it is preferable that there are many outlets. For example, in the case of FIG. 2, all have a structure of blowing from the front, but it is also possible to provide the front and rear doors 3a and 3b or behind the vehicle interior.
[0020]
Next, the detailed structure of the sheet having a cleaning function will be described.
FIG. 3 is a partially broken front passenger seat of the front seat 5. The front seat 5 includes a seat back 20 and a seat cushion 30. The seat cushion 30 is normally installed so as to be movable forward and backward with respect to the floor surface. The seat back 20 can be tilted with respect to the seat cushion 30 and is usually attached in an upright state.
As shown in FIG. 4, the seat back 20 includes a seat cover 21, a seat pad 22, and a frame member 23. The seat cover 21 includes a front cover 21a, a back cover 21b, and a top cover 21c that connects the covers 21a and 21b. The connecting portions are joined together by sewing or the like, and are formed in a bag shape as a whole.
The seat cover 21 only needs to be formed of a breathable material, and it is sufficient that the air flow in the passenger compartment A can circulate inside the seat cover 21. The normal seat cover 21 is made of fabric, but the fabric seat cover has good air permeability, so that the conventional configuration may be used.
[0021]
[0022]
As shown well in FIG. 3, the frame member 23 includes a frame skeleton 23a and an S-shaped zigzag spring 23b that form the outer skeleton of the seatback 20, and the S-shaped zigzag spring 23b is provided on the left and right frame skeletons. 23a is stretched between 23a. As shown well in FIG. 4, the seat pad 22 is disposed from the upper part to the lower part of the seat back 20 with a predetermined thickness that allows the seated person 50 to ensure a comfortable sitting.
In other words, the seat pad 22 is provided over an area in substantially the same range as the frame skeleton 23a. A notch 22a is provided around the seat pad 22, and a frame skeleton 23a is taken in and arranged in the notch 22a. When viewed as a whole, a seat pad 22 is disposed on the front surface of the frame skeleton 23 (leftward position as viewed in FIG. 4), and a bag-like seat cover 21 is covered thereon to form a seat back. The seat pad 22 in this embodiment corresponds to the pad member in the present invention.
[0023]
In the seat back 20 described above, the photocatalyst layer 25 is formed on the back surface of the seat pad 22 on the right side as viewed in FIG. 4, and the ultraviolet light source 27 is attached to the frame skeleton 23a. As shown in FIG. 4, the back surface of the seat back 22 on which the photocatalyst layer 25 is formed is a seat on the side opposite to the front cover 21a on the side where the seated person contacts when the seated person 50 sits on the front seat 5. In the internal component position. That is, the back surface of the seat back 22 is a position where transmission of the movement of the seated person is reduced, and the influence of the relative frictional motion with the frame member 23 due to the movement is also in a position state. The position of the frame skeleton 23a to which the ultraviolet light source 27 is attached is also in the same position state.
[0024]
Since the photocatalyst layer 25 formed on the back surface of the seat pad 22 may deteriorate the surface of the sheet pad 22 as an object to be coated due to the action of the photocatalyst, it is possible to obtain protection and adhesion of the object to be coated. A coating layer is preferably formed between the photocatalyst and the sheet pad 22 that is the object to be coated. As the constituent of the coating layer, there are an enamel type having a porous structure and an inorganic material. By applying to the sheet pad 22 as an object together with these, titanium oxide is exposed on the surface of the coating material layer, and a photocatalytic layer is formed (not shown).
The photocatalyst used for the photocatalyst layer 25 includes titanium oxide, zinc oxide, tungsten oxide, cerium oxide, and the like, but titanium dioxide having high safety and high chemical stability is preferable.
[0025]
In this embodiment, an ultraviolet light emitting diode is used as the ultraviolet light source 27 attached to the frame member 23. Ultraviolet light emitting diodes have the advantage of using less power and are suitable for vehicles that use batteries as the power source, such as automobiles. In addition, as the ultraviolet light source 27, it is conceivable to use black light, chemical light, germicidal lamp, high pressure mercury lamp, or the like. However, these all have higher power consumption than light emitting diodes.
In this embodiment, one ultraviolet light source 27 is attached to the left and right frame skeletons 23a so as to irradiate one photocatalyst layer 25 inward. And although illustration was abbreviate | omitted, each ultraviolet light source 27 is wired so that electric power may be always supplied from a battery power supply. Note that the ultraviolet light sources 27 may be installed in a number sufficient to irradiate the area of the photocatalyst layer 25 formed on the back surface of the seat pad 22.
[0026]
Next, the seat cushion 30 shown in FIG. 3 is also configured in the same manner as the seat back 20 although the position is different. That is, the seat cushion 30 includes a seat cover 31, a seat pad 32, and a frame member 33. The frame member 33 includes a frame skeleton 33a and an S-shaped zigzag spring 33b, and the S-shaped zigzag spring 33b is formed to be stretched on the left and right frame skeletons 33a.
Also in the seat cushion 30, the photocatalyst layer 35 is formed on the lower surface of the seat pad 31, which is the same position as the seat back 20, and the ultraviolet light source 37 irradiates the photocatalyst layer 35 to the frame skeleton 33a. It is attached as follows.
[0027]
The seats other than those shown in FIGS. 3 and 4 are configured in the same manner as the passenger seat side seat of the front seat 5 described above. That is, the front seat 5 spear Ya sheet 7 of the driver's seat side is configured similarly, a photocatalyst layer and the ultraviolet light source for forming the air cleaning function is provided in each sheet. However, the air purifying function is not necessarily provided for all seats, and may be provided as necessary to an extent sufficient for air cleaning in the passenger compartment. In this case, from the viewpoint of efficiently performing the air cleaning function, it is preferable to preferentially provide the seat back 20 of the front seat 5 from the viewpoint of the seat arrangement configuration.
[0028]
The air cleaning function of the seat installed in the passenger compartment of the automobile having the above configuration will be described.
Air flows from the air outlets 1a, 1b, 1c, and 1d of the air conditioner shown in FIG. 2 circulate in the automobile interior A shown in FIG. Circulate inside. The air flow circulating in the sheets 5 and 7 may have odors and bacteria. When the air flow having odors and bacteria comes to the position of the photocatalyst layers 25 and 35 inside the sheet, the odors and bacteria are decomposed by the photocatalytic action by irradiation from the ultraviolet light sources 27 and 37, and the air is cleaned. Is called. The purified air is returned again to the vehicle interior A outside the seat according to the circulation flow. This air cleaning function is performed as long as the air is circulated into the seat, the air in the vehicle interior A is being cleaned, and the vehicle interior A is always in a clean state.
Thus, in this embodiment, since the irradiation of the ultraviolet light sources 27 and 37 for performing the photocatalytic action is performed inside the seat, the influence on the human body of the seated person 50 can be further reduced. . Further, since the ultraviolet light sources 27 and 37 are provided in the frame skeletons 23a and 33a inside the seat, the air purifying function can be performed regardless of the weather or day and night.
Even when the air conditioner is not in operation, air circulation is ensured by the difference in heat distribution caused by heat sources such as the human 50 and the ultraviolet light sources 27 and 37 in the vehicle. Even in a weak air circulation, the photocatalyst layers 25 and 35 can be formed widely using the internal spaces of the sheets 5 and 7, so that a sufficient effect can be obtained.
[0029]
Further, according to the above-described embodiment, the photocatalyst layers 25 and 35 are formed by coating the back surface or the bottom surface of the seat pads 22 and 32, that is, by simply applying them. Good productivity. Further, the position where the photocatalyst layers 25 and 35 are formed is a position away from the position where the seated person 50 is seated and the movement of the seated person 50 is not transmitted so much. It can be stably maintained over a long period of time.
In the above embodiment, the power supply to the photocatalyst layers 25 and 35 is always performed, so that the interior of the vehicle can always be kept clean. For example, when the vehicle is in an automobile, Can eliminate the effects of off-flavors and bacteria. That is, since the photocatalytic action is a radical reaction, a certain amount of time is required for the action to be exerted after the power is turned on. For this reason, if the power is turned on when entering the automobile, there is a problem that the cleaning for the passenger is delayed.
[0030]
Although the embodiment of the vehicle seat having the air cleaning function according to the present invention has been described above, the present invention can be implemented in various other embodiments .
[0031]
Further, in the above-described embodiment, the case where wiring is performed so that power is always supplied to the ultraviolet light sources 27 and 37 has been described. However, power is supplied between the ultraviolet light sources 27 and 37 and the vehicle power supply or the external power supply. It is also possible to provide a device for controlling the above. Thereby, when not using for a long time, the electricity supply can be stopped and power can be saved.
[0032]
【The invention's effect】
Each invention of the present invention has the following effects by taking the above-described means.
First, according to the first invention, since the photocatalyst layer and the coating layer are formed on the vehicle seat and the light source is installed, the air cleaning function can be exhibited regardless of weather or day and night. . Further, the photocatalyst layer, since the coating layer and the light source is installed in the seat inside the vehicle, with the influence of the human body, such as a seated person is adapted to the less stable photocatalyst layer for a long time It can be used now.
[0033]
Next, according to the second invention, since the circulation of the air flow inside the seat is forcibly performed, the capacity of the air cleaning function inside the seat can be increased.
Next, according to the third aspect of the invention, by using an ultraviolet light emitting diode with low power consumption as an ultraviolet light source, it is possible to adopt a system in which vehicle power is constantly supplied, and the air in the vehicle interior is always cleaned. be able to.
[Brief description of the drawings]
FIG. 1 is a schematic view of a passenger compartment.
FIG. 2 is a schematic view of a blowout opening in a vehicle compartment.
FIG. 3 is a perspective view showing the overall configuration of the vehicle seat in a partially broken view.
FIG. 4 is a cross-sectional view of a main part of a vehicle seat.
[Explanation of symbols]
A Car interior 1 Instrument panel 1a, 1b, 1c, 1d Outlet 3 Side door 3a Front door 3b Rear door 5 Front seat 7 Rear seat 20 Seat back 30 Seat cushion 21, 31 Seat cover 21a Front cover 21b Back cover 21c Top cover 22 , 32 Seat pad (pad member)
23, 33 Frame member 23a, 33a Frame skeleton 23b, 33b S-shaped zigzag spring 25, 35 Photocatalyst layer 27, 37 Ultraviolet light source 50 Seated person

Claims (3)

It is a vehicle seat that is installed in a vehicle interior and allows air flow in the vehicle interior to pass through, and after a pad member is arranged on the frame member, a breathable seat cover is covered on these ,
The vehicle seat has a seat back that is tiltable with respect to a seat cushion,
A photocatalyst layer and a coating layer are formed on a surface of the seat back pad member opposite to a side in contact with a seated person, and an ultraviolet light source capable of irradiating ultraviolet rays toward the photocatalyst layer includes a frame member of the seat back. vehicle seat having an air cleaning function of the installed wherein Tei Rukoto to. A vehicle seat having the air cleaning function according to claim 1,
A vehicle seat having an air purifying function , characterized in that air conditioner outlets for forcing air to flow are provided in front and rear of the passenger compartment . A vehicle seat having the air cleaning function according to claim 1 or 2,
The ultraviolet light source is an ultraviolet light emitting diode,
And the vehicle seat provided with the air purifying function characterized by the vehicle power supply being always supplied .

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