JP2001301451A - Air cleaner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner 1 for a vehicle capable of improving deodorizing capacity of a deodorizing filter 6 without an increase in cost. SOLUTION: The deodorizing filter 6 used for the air cleaner 1 is constituted by attaching photocatalyst particles such as titanium oxide (TiO2), etc., to an adsorbent (e.g. a honeycomb activated carbon filter) composed of a porous material for adsorbing odor component in the air, and is arranged so as to face to an air outlet 10 inside the upper case 3A. The titanium oxide is the photocatalyst which exhibits highly active oxidation force by irradiating ultraviolet rays at about a wavelength of 380 nm. A grill 12 provided at the air outlet 10 of the upper case 3A is constituted so that the sunshine streaming in an car interior through the rear window can be let inside the case 3. Concretely, the grill is provided so as to tilt in a direction of the rear window 14 of the vehicle roughly at tilt angle of 45 degrees to the rear tray.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air purifier provided with a filter capable of regenerating a deodorizing function using a photocatalyst.

[0002]

2. Description of the Related Art Conventionally, there has been known a technique in which an activated carbon filter used in an air purifier carries a photocatalyst, and the photocatalyst is irradiated with ultraviolet rays to regenerate the deodorizing function of the activated carbon filter. As a conventional technique in which this known technique is applied to an air conditioner for a vehicle, for example, Japanese Patent Laid-Open No. 5-10494
No. 6 publication. In the air conditioner disclosed in this publication,
Activated carbon with a photocatalyst is installed in a ventilation path leading to the vehicle interior, and odorous components in the air flowing through the ventilation path are adsorbed by the activated carbon with the photocatalyst, thereby supplying odor-free air to the interior of the vehicle. An ultraviolet lamp is provided in the vicinity of the activated carbon with photocatalyst. The ultraviolet lamp is turned on to irradiate the activated carbon with photocatalyst with ultraviolet rays, thereby regenerating the adsorption function of the activated carbon with photocatalyst.

[0003]

However, in the above-mentioned prior art, an ultraviolet lamp is used as a means for reactivating the activated carbon with a photocatalyst. There was a problem that the output had to be increased, resulting in an increase in cost.
The present invention has been made based on the above circumstances, and an object of the present invention is to provide a vehicle air purifier that can improve the deodorizing performance of a filter without increasing costs.

[0004]

The case is provided with a grill in an opening provided as an air inlet or outlet, and the grill has an inclination angle of about 45 degrees with respect to the rear tray. The filter is provided at a position inclined to the rear window direction of the vehicle, and the filter is installed at a position where sunlight entering the case through the opening shines. According to this configuration, sunlight can be applied to the photocatalyst attached to the surface of the filter, so that the oxidizing power of the photocatalyst is activated by ultraviolet light contained in the sunlight, and the deodorizing ability of the filter is regenerated by the oxidizing power. it can. In this case, since the oxidizing power of the photocatalyst can be activated by sunlight, the deodorizing performance of the filter can be improved without increasing the cost. In addition, since the grill provided at the opening of the case is inclined at an angle of approximately 45 degrees with respect to the rear tray toward the rear window of the vehicle, sunlight passing through the rear window and entering the passenger compartment is blocked by the grill. And sunlight can be effectively introduced into the case to irradiate the photocatalyst of the filter.

[0005] (Means of claim 2) The case is provided with a grill in an opening provided as an air inlet or an air outlet, and a reflective material for reflecting sunlight is provided on the surface of the grill. The filter is installed at a position where sunlight reflected by the reflecting material and entering the case hits. According to this configuration, sunlight can be applied to the photocatalyst attached to the surface of the filter, so that the oxidizing power of the photocatalyst is activated by ultraviolet light contained in the sunlight, and the deodorizing ability of the filter is regenerated by the oxidizing power. it can. In this case, since the oxidizing power of the photocatalyst can be activated by sunlight, the deodorizing performance of the filter can be improved without increasing the cost. In addition, since a reflective material is provided on the grill surface, the sunlight that passes through the rear window and enters the passenger compartment is reflected by the reflective material, so that it can be effectively introduced into the case and irradiated on the photocatalyst of the filter. Can be.

The case is provided with a grill at an opening provided as an air inlet or an air outlet, and the grill is provided so as to be openable and closable with respect to the case. It is installed in a position where sunlight that enters the case hits. According to this configuration, sunlight can be applied to the photocatalyst attached to the surface of the filter, so that the oxidizing power of the photocatalyst is activated by ultraviolet light contained in the sunlight, and the deodorizing ability of the filter is regenerated by the oxidizing power. it can. In this case, since the oxidizing power of the photocatalyst can be activated by sunlight, the deodorizing performance of the filter can be improved without increasing the cost. In addition, since the grill is provided so that it can be opened and closed with respect to the case, by opening the grill when there is solar radiation, sunlight that penetrates through the rear window and enters the vehicle interior can be effectively introduced into the case and the filter The photocatalyst can be irradiated.

(Claim 4) The case is provided with a grill at an opening provided as an air intake or an air outlet, and the grill has an inclination angle of approximately 45 degrees with respect to the installation surface of the rear tray. It is provided inclined to the rear window direction,
In addition, a reflector that reflects sunlight is provided on the surface of the grill, and the filter is installed at a position where sunlight that is reflected by the reflector and enters the case hits.

According to this configuration, sunlight can be applied to the photocatalyst attached to the surface of the filter, so that the oxidizing power of the photocatalyst is activated by ultraviolet rays contained in the sunlight, and the oxidizing power causes the filter to be deodorized. Ability to regenerate. In this case, since the oxidizing power of the photocatalyst can be activated by sunlight, the deodorizing performance of the filter can be improved without increasing the cost. In addition, the grill provided at the opening of the case is inclined toward the rear window of the vehicle at an inclination angle of approximately 45 degrees with respect to the rear tray, and a reflective material is provided on the surface of the grill. The sunlight that enters the room is reduced from being blocked by the grill, and the sunlight is reflected by the reflector, so that the sunlight can be effectively introduced into the case and irradiated to the photocatalyst of the filter.

According to a fifth aspect of the present invention, there is provided an air cleaner for a vehicle which is mounted in close proximity to a glass surface of a vehicle, wherein the case has an opening on a surface facing the glass surface, and the opening is provided with the opening. The filter is closed by a glass surface, and the filter is arranged at a position where sunlight coming into the case from the opening shines. According to this configuration, the sunlight transmitted through the glass surface of the vehicle enters the inside of the case from the opening of the case and hits the filter, whereby the oxidizing power of the photocatalyst attached to the surface of the filter is activated, and the oxidation of the photocatalyst is performed. The power can regenerate the deodorizing ability of the filter.

[0010] Further, since the opening of the case is opposed to the glass surface, when sunlight is applied to the glass surface, sunlight from any angle can be taken into the case.
In addition, since there is nothing other than glass that blocks sunlight, the photocatalytic reaction can be effectively utilized. Furthermore, since sunlight directly hits the photocatalyst, the temperature of the catalyst rises due to the sunlight, and the activation of the photocatalyst is also improved.

According to a sixth aspect of the present invention, there is provided an air cleaner for a vehicle which is mounted in close proximity to a glass surface of a vehicle, wherein the case has a light transmitting member capable of transmitting ultraviolet light on a surface facing the glass surface. The filter is arranged at a position where sunlight passing through the light transmitting member and entering the inside of the case hits the filter. According to this configuration, the ultraviolet light transmitted through the glass surface of the vehicle and the light transmitting member enters the case and hits the filter, whereby the oxidizing power of the photocatalyst attached to the surface of the filter is activated, and the oxidizing power is increased. Thus, the deodorizing ability of the filter can be regenerated. In addition, since the light transmitting member provided in the case is opposed to the glass surface, when sunlight hits the glass surface, sunlight from any angle can be taken into the case, so that the photocatalytic reaction is effective. Can be used for Furthermore, the sunlight shines on the photocatalyst,
The catalyst temperature is increased, and the activation of the photocatalyst is also improved.

(Means of Claim 7) The vehicle air purifier described in Claims 5 and 6 can be mounted close to a sunroof provided on the ceiling surface of the vehicle.

(Means of Claim 8) The vehicle air purifier described in claims 5 and 6 can be mounted close to the rear window of the vehicle.

(Claim 9) The case is characterized in that the case has an opening on the wall surface facing the sunroof on the upstream side of the filter, and this opening is opened and closed by the sunroof. According to this configuration, the opening can be inevitably opened by opening the sunroof. In this case, the air in the vehicle compartment is sucked into the case through the suction port, and then discharged out of the vehicle compartment through the opening without passing through the filter. As a result, while the sunroof is open, dirty air in the vehicle interior does not pass through the filter, so that the life of the filter can be extended.

(Claim 10) The case has an opening in the wall surface facing the sunroof on the upstream side of the filter,
An opening / closing door that opens and closes the opening is provided, and the opening / closing door is formed of a member that can transmit ultraviolet light, and is capable of closing the upstream side of the filter when the opening is opened. According to this configuration, when the opening is opened by the opening / closing door when the sunroof is opened, the air in the vehicle compartment is sucked into the case from the intake port, and then passes through the opening to the outside of the vehicle compartment without passing through the filter. Released to
As a result, while the sunroof is open, the dirty air in the vehicle interior does not pass through the filter while the opening / closing door is opening, so that the life of the filter can be extended.

(11) A vehicle air purifier according to claim 10, wherein the opening / closing door is provided in conjunction with opening / closing of the sunroof, and closes the upstream side of the filter when the sunroof is opened. The opening is closed when is closed. According to this configuration, it is not necessary to use a dedicated actuator for driving the opening / closing door, so that the structure can be simplified and the cost can be reduced.

(Twelfth Aspect) In the air purifier for a vehicle according to the ninth to eleventh aspects, the sunroof has a tilt-up type opening / closing mechanism in which a rear end side lifts upward when opened. In this case, compared to the sliding sunroof, the tilt-up type has better ventilation when the sunroof is opened, so the vehicle air purifier of the present invention is applied to the tilt-up type sunroof. It is possible to more effectively discharge the dirty air in the vehicle compartment from the opening to the outside of the vehicle compartment.

(Means of Claim 13) Claims 7 or 9 to
12.A mounting structure for any of the vehicle air purifiers according to 12, comprising a sunshade capable of shielding a sunroof, and the sunshade is provided on a driver's seat side and a passenger's seat side so as to be independently openable and closable, An air purifier is arranged between the sunshade on the driver's seat side and the sunshade on the passenger's seat side. According to this configuration, since the sunshade is divided into the driver's seat side and the passenger's seat side, the air cleaner can be attached to the sunroof without interfering with the sunshade.

According to a fourteenth aspect of the present invention, in the vehicle air purifier mounting structure according to the thirteenth aspect, the air purifier is fixed to a rail for sliding a sunshade. In this case, there is no need to prepare a dedicated bracket or the like for fixing the air purifier.

(Means of Claim 15) Claim 7 or 9 to
12.A mounting structure of any of the vehicle air purifiers according to 12, comprising a sunshade capable of blocking a sunroof, forming a recess in a front portion of a center portion of the sunshade in a vehicle width direction, and closing the sunshade. The air purifier is arranged by utilizing a space generated in the recess. According to this configuration, by forming the concave portion in the sunshade, when the sunshade is closed, the air purifier can be attached to the sunroof without interfering with the sunshade. Further, since the air purifier can be attached to a vehicle not equipped with the air purifier simply by forming a concave portion in the existing sunshade, it is not necessary to significantly modify the vehicle.

According to a sixteenth aspect of the present invention, in the vehicle air purifier according to the fifth aspect, the filter has a deodorizing part having a deodorizing function and a dust removing part for removing dust in the air. The deodorizing section and the dust removing section are configured separately, and the deodorizing section is arranged downstream of the dust removing section in the air. In this case, since the dust contained in the air is removed by the dust removing section, it is possible to prevent the dirt from attaching to the deodorizing section.

(Means of Claim 17) In the air purifier for vehicles according to claims 5 to 15, the filter has a deodorizing section having a deodorizing function and a dust removing section for removing dust in the air. The deodorizing section and the dust removing section are integrally formed. In this case, the installation space for the filter can be reduced,
There is an advantage that the air purifier can be downsized.

(Means of Claim 18) The vehicle air purifier according to any one of claims 1 to 17 is provided with an ultraviolet lamp for irradiating the surface of the filter with the photocatalyst attached thereto with ultraviolet rays. In this case, even when sunlight does not shine on the glass surface, the filter can be irradiated with ultraviolet light by turning on the ultraviolet lamp.

[0024]

Next, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) FIG. 1 is a sectional view of an air purifier 1 for a vehicle. The air purifier 1 shown in the present embodiment is used for an automobile, and is installed on a rear tray 2 in a vehicle compartment as shown in FIG. The air purifier 1 includes a case 3, a dust filter 4, a blower 5, a deodorizing filter 6, an ultraviolet lamp 7, and the like, which will be described in detail below.

The case 3 is composed of an upper case 3A and a lower case 3B which are divided into upper and lower parts, and both are detachably assembled to form an air passage 8 therein. The upper case 3 </ b> A is formed with a suction port 9 for taking in the vehicle interior air into the case 3 and a blowout port 10 for blowing out the purified air. As shown in FIG. 2, the suction port 9 opens largely at the center of the upper case 3A, and
The reference numeral 0 denotes an opening on the right side of the suction port 9 in the figure, and grilles 11 and 12 are provided in each opening. A grill 13 similar to the outlet 10 is also provided on the left side of the inlet 9 in the figure, forming a dummy outlet. The grill 12 provided at the outlet 10 has a rear window 14
It is provided so that sunlight that enters the vehicle interior through the vehicle can be introduced into the case 3. Specifically, as shown in FIG. 3, the rear tray 2 is provided at a tilt angle of approximately 45 degrees with respect to the rear tray 2 so as to be inclined toward the rear window 14 of the vehicle.

The dust filter 4 is disposed inside the upper case 3A so as to face the suction port 9, and when the air sucked into the case 3 from the suction port 9 passes through the dust filter 4, the air is removed from the air. Can be removed. The blower 5 includes a sirocco fan 5A and a motor 5B, and is disposed in an air passage 8 inside the case 3. The blower 5 rotates the fan 5A by the motor 5B, thereby sucking the air in the passenger compartment from the suction port 9 into the inside of the case 3 and generating an airflow toward the air outlet 10 in the air passage 8.

The deodorizing filter 6 is provided with an adsorbent (for example, activated carbon, silica, activated alumina, zeolite, etc.) made of a porous substance that adsorbs odor components in the air.
As shown in FIG. 1, the photocatalyst particles such as O ₂ ) are attached to the air outlet 10 inside the upper case 3A. Titanium oxide is a photocatalyst that exerts a very active oxidizing power when irradiated with ultraviolet light having a wavelength of about 380 nm. The ultraviolet lamp 7 is provided below the deodorizing filter 6, and can be irradiated with ultraviolet rays on the lower surface of the deodorizing filter 6 by being energized and turned on.

Next, the operation and effect of the air purifier 1 shown in this embodiment will be described. The suction port 9 is activated by the operation of the blower 5.
The air introduced into the case 3 from the
The dust contained in the air is removed when the air passes through the filter, and the odor component in the air is adsorbed when the air passes through the deodorizing filter 6 and is supplied from the air outlet 10 into the vehicle interior. The deodorizing filter 6 has a deodorizing ability (adsorbing ability of activated carbon) that decreases as the amount of odor components adsorbed on the activated carbon increases, but the photocatalyst attached to the deodorizing filter 6 is irradiated with ultraviolet light to irradiate the photocatalyst with ultraviolet light. The oxidizing action of the activated carbon is activated, and the oxidizing power can restore the adsorption ability of the activated carbon.

Since the air purifier 1 is installed on the rear tray 2 in the vehicle interior, it is often exposed to sunlight passing through the rear window 14 and entering the vehicle interior during solar radiation. Therefore, the grill 12 provided at the outlet 10 of the case 3 is inclined toward the rear window 14 of the vehicle at an inclination angle of about 45 degrees with respect to the rear tray 2 so that the sun that passes through the rear window 14 and enters the vehicle interior. The direction of the grill 12 can be substantially matched with the direction of light. Accordingly, the sunlight is hardly obstructed by the grill 12 of the outlet 10, can be effectively introduced into the case 3, and the photocatalyst attached to the upper surface of the deodorizing filter 6 can be irradiated with the sunlight.

Further, ultraviolet rays can be applied to the photocatalyst attached to the lower surface of the deodorizing filter 6 by an ultraviolet lamp 7 disposed below the deodorizing filter 6. As a result, since the upper and lower surfaces of the deodorizing filter 6 can be irradiated with ultraviolet light, the photocatalyst can be effectively activated, and the output of the ultraviolet lamp 7 can be increased by using sunlight instead of the ultraviolet lamp 7. Since a large amount of ultraviolet light can be secured without any problem, the deodorizing performance of the deodorizing filter 6 can be improved.

(Second Embodiment) FIG. 4 is a sectional view of the air purifier 1. This embodiment shows an example in which a reflector 15 (for example, an aluminum vapor-deposited film) that reflects sunlight is provided on a grill 12 of an outlet 10. In this case, the sunlight that has passed through the rear window 14 and entered the vehicle interior is reflected by the reflector 15 and introduced into the case 3 as shown by the arrow in FIG. Ultraviolet rays can be effectively applied to the deodorizing filter 6. In addition, ultraviolet rays can be applied to the photocatalyst attached to the lower surface of the deodorizing filter 6 by the ultraviolet lamp 7 disposed below the deodorizing filter 6.

By irradiating the upper and lower surfaces of the deodorizing filter 6 with ultraviolet rays, the photocatalyst can be effectively activated,
In addition, by using sunlight other than the ultraviolet lamp 7, a large amount of ultraviolet light can be secured without increasing the output of the ultraviolet lamp 7, so that the deodorizing performance of the deodorizing filter 6 can be improved. The reflector 15 may be provided on the surface of the grill 12 described in the first embodiment (the grill 12 inclined toward the rear window 14 of the vehicle at an inclination angle of about 45 degrees with respect to the rear tray 2).

(Third Embodiment) FIG. 5A is a top view of the air purifier 1, and FIG. 5B is a sectional view taken along line BB of FIG. In the present embodiment, as shown in FIG.
2 shows an example in which a conventional hinge 2 and the like can be opened and closed. In this configuration, by opening the grill 12 when there is sunlight, the sunlight that passes through the rear window 14 and enters the vehicle interior can be reliably introduced into the case 3 without being blocked by the grill 12. Sunlight (ultraviolet light) can be applied to the photocatalyst attached to the substrate.

The opening and closing operation of the grill 12 may be performed manually by an occupant or automatically. As an example of automatic operation, for example, the engine O
The opening / closing operation of the grill 12 can be performed based on the signal of the detecting means for detecting N / OFF. In this case, by controlling the grill 12 to be opened when the engine is stopped and the grill 12 to be closed when the engine is started, it is possible to deodorize the vehicle interior even when the ultraviolet lamp 7 is not operating.

(Modification of First to Third Embodiments) Grill 1
2 may be completely separated from the upper case 3A and detachably assembled to the upper case 3A. The grill 12 may be configured to be slidable or rotatable so that the outlet 10 can be opened and closed by the grill 12. The direction of the grill 12 may be freely changed so that the direction of the grill 12 can be changed in accordance with the direction of sunlight. It is sufficient that the deodorizing filter 6 can be arranged at a position where the sunlight shines, and it is not always necessary to arrange the deodorizing filter 6 so as to face the outlet 10.
For example, it may be arranged facing the suction port 9.

(Fourth Embodiment) FIG. 6A is a top view of the air purifier 20 and FIG. 6B is a cross-sectional view taken along the line CC. The air purifier 20 of the present embodiment shows an example of a case where one surface (upper surface) of the case 21 is attached close to (or may come into contact with) the glass surface of the vehicle. For example, as shown in FIG. ,
It can be used by attaching to the sunroof 22 (glass surface) of the vehicle. In the case where the air purifier 20 is directly attached to the sunroof 22, bonding is generally performed. However, a hole may be formed in the sunroof 22, and the sunroof 22 may be attached through a mounting member.

The case 21 is provided with an opening 23 on the upper surface of the case 21 facing the sunroof 22, and the opening 23 is airtightly closed by the sunroof 22.
Inside the case 21, a blower 2 for generating an air flow is provided.
4. A filter 25 for purifying air blown by the blower 24, an ultraviolet lamp 26 for applying ultraviolet light to the filter 25, and the like are housed.

The blower 24 is of a centrifugal type,
The air in the vehicle cabin is sucked in through a suction port 27 opened on the lower surface of the vehicle, and is blown toward the filter 25. The air that has passed through the filter 25 is blown into the vehicle cabin through a blowout opening 28 that opens on the lower surface or side surface of the case 21. Filter 25
Has a deodorizing section having a deodorizing function and a dust removing section having a dust removing function provided integrally, and a photocatalyst is attached to a surface of the deodorizing section. As shown in FIG. 6B, the filter 25 is disposed inside the case 21 so as to be inclined below the opening 23.

In the air purifier 20, the sunlight transmitted through the sunroof 22 of the vehicle enters the case 21 through the opening 23 of the case 21 and hits the filter 25, whereby the photocatalyst attached to the surface of the filter 25 is removed. The oxidizing power is activated, and the deodorizing ability of the filter 25 can be regenerated by the oxidizing power. Further, since the opening 23 of the case 21 faces the sunroof 22, when the sun shines on the sunroof 22, sunlight from any angle can be taken into the case 21. In particular, when the air purifier 20 is attached to the sunroof 22, the sunlight irradiating the vehicle can be effectively taken in regardless of the traveling direction of the vehicle, and since there is nothing other than glass to block the sunlight, the photocatalyst The reaction can be used effectively.

Further, since sunlight directly hits the photocatalyst attached to the surface of the filter 25, the temperature of the catalyst rises due to the sunlight, and the activation of the photocatalyst can be improved. As shown in FIG. 7, when the air purifier 20 is attached to the sunroof 22, the overhead space of the occupant is reduced. However, the deodorizing part and the dust removing part of the filter 25 are integrated, and FIG. As shown, by arranging the blower 24 and the filter 25 side by side in the front-rear direction of the vehicle, the air purifier 20 can be configured to be thin, so that the occupant's feeling of opening above the head is not significantly impaired.

(Modification) In addition to the sunroof 22 as a glass surface, the place where the air purifier 20 is attached may be a rear window or a side window (in this case, the side window on the rear seat side is better). In the present embodiment, the case 21 facing the sunroof 22 of the vehicle is used.
Although the opening 23 is provided on the upper surface of the device, a light transmitting member (for example, a glass plate) capable of transmitting ultraviolet light may be fitted into the opening 23. Even in this case, the sunroof 22 of the vehicle
Since the sunlight hits the filter 25 after passing through the light transmitting member, the same effect as described above can be obtained. FIG. 6 illustrates an example in which the filter 25 is disposed on only one side of the blower 24, but the filters 25 may be disposed on both sides of the blower 24, for example, as shown in FIG.
8A is a top view of the air purifier 20, and FIG. 8B is a cross-sectional view taken along the line DD.

(Fifth Embodiment) FIG. 9A is a top view of the air purifier 20, and FIG. 9B is a sectional view taken along the line E-E. As in the fourth embodiment, the air purifier 20 of the present embodiment is mounted close to the glass surface of the vehicle (for example, the sunroof 22) (or may be directly mounted). It is an example separated into a part 25B. As in the fourth embodiment, the deodorizing section 25A is arranged to be inclined below the opening 23 inside the case 21. As shown in FIG. 9B, the dust removing section 25B is arranged to face the suction port 27 of the blower 24.

In this embodiment, the same effects as those of the fourth embodiment can be obtained. In addition, since the dust removing section 25B is located upstream of the deodorizing section 25A in the air flow direction, the dust removing The air from which dust has been removed by the unit 25B is sent to the deodorizing unit 25A. Thereby, the deodorizing section 25A
It is possible to reduce adhesion of dirt to the surface. Also, blower 2
Since the deodorizing section 25A is disposed so as to face the suction port 27 of No. 4, it is possible to prevent the occupant's hand or thing from entering the suction port 27 by mistake.

(Sixth Embodiment) FIGS. 10 and 11 are sectional views of the air purifier 20. FIG. Air purifier 2 of the present embodiment
Numeral 0 is attached to the ceiling surface of the vehicle having the openable sunroof 22, as shown in FIGS. 10 and 11, and the structure of the air purifier 20 itself has been described in the fourth embodiment (see FIG. 6). It is almost the same as the one. That is, the opening 23 is provided on the upper surface of the case 21 facing the sunroof 22, and the sunlight transmitted through the sunroof 22 is configured to enter the inside of the case 21 through the opening 23. A filter 25 is provided. The filter 25 is provided with a deodorizing section having a deodorizing function and a dust removing section having a dust removing function, and a photocatalyst is attached to the surface of the deodorizing section.

The sunroof 22 is opened at the rear end side (FIG. 1).
0 has a so-called tilt-up type opening / closing mechanism that lifts upward, and an opening 2 provided on the upper surface of the case 21.
3 can be opened and closed. That is, when the sunroof 22 is closed, the opening 23 is airtightly closed by the sunroof 22, and when the sunroof 22 is opened, the opening 23 can be automatically opened. In addition, sunroof 2
2, a tempered glass plate or the like that can transmit ultraviolet rays is used. The air purifier 20 is not directly attached to the sunroof 22, but is supported on a ceiling surface around the sunroof 22.

Next, the operation of the air purifier 20 will be described. a) When the sunroof 22 is closed Since the opening 23 on the upper surface of the case 21 is airtightly closed by the sunroof 22, only an air passage from the inlet 27 to the outlet 28 is formed inside the case 21. Is done. In this case, as shown in FIG. 11, air (contaminated air in the passenger compartment) sucked into the case 21 from the suction port 27 by the operation of the blower 24 is purified by passing through the filter 25, and It is blown out into the room.

B) When the sunroof 22 is open When the opening 23 on the upper surface of the case 21 is opened, the inside of the case 21 is connected to the air passage from the suction port 27 to the air outlet 28 and from the suction port 27. A ventilation passage leading to the opening 23 is formed. In this case, as shown in FIG. 10, the air sucked into the case 21 from the suction port 27 does not pass through the filter 25 serving as a ventilation resistance, and
The air is discharged outside the vehicle compartment through the opening 23 that opens upstream of the vehicle.

(Effect of this embodiment) As described above, while the sunroof 22 is opened, the dirty air in the vehicle compartment is discharged from the opening 23 to the outside of the vehicle compartment without passing through the filter 25. , The life of the filter 25 can be extended. The opening 23 provided on the upper surface of the case 21
Is opened and closed by the sunroof 22 so that the sunroof 2
When the vehicle 2 is opened, a ventilation passage communicating between the vehicle interior and the exterior of the vehicle is formed inside the case 21. In this case, since the blower 24 of the air purifier 20 can be used as a ventilation fan, it is possible to more effectively ventilate the vehicle interior.

Further, in the configuration of this embodiment, the opening 23
Since a window material such as a glass plate is not fitted into the case 2, sunlight passing through the sunroof 22 is directly transmitted from the opening 23 to the case 2.
1 can enter. When the window material is fitted into the opening 23, the amount of ultraviolet light contained in sunlight decreases, so that the regenerating ability of the filter 25 by the photocatalyst decreases. However, the reduction of ultraviolet light can be suppressed by eliminating the window material. Therefore, there is an effect that the regeneration capability of the filter 25 can be improved.

(Seventh Embodiment) FIG.
FIG. The air purifier 20 of the present embodiment has a sixth
This shows an example in which an opening / closing door 29 for opening and closing the opening 23 is provided in the configuration described in the embodiment.
The configuration other than the opening / closing door 29 is the same as that of the sixth embodiment, and a description thereof will be omitted. The opening / closing door 29 is made of a resin plate, a glass plate, or the like that can transmit ultraviolet light, and has a seal member 29a around the door.

The opening / closing door 29 is in a closed position for closing the opening 23 about the rotation shaft 30 (a broken line position in FIG. 12).
And an open position (a solid line position in FIG. 12) for opening the opening 23, so that the upstream surface of the filter 25 can be airtightly closed in the open position. Opening / closing door 29
The lever 31 is integrally provided on the opposite side with the rotation shaft 30 as a fulcrum, and the opening 23 can be opened and closed in conjunction with the opening and closing operation of the sunroof 22 via the lever 31.

The operation of the door 29 will be described below. a) When the sunroof 22 is closed The opening / closing door 29 is moved to the closed position by the lever 31 being pushed by the sunroof 22 to restrict the movement. In this case, since the opening 23 is closed by the opening / closing door 29, the air (contaminated air in the vehicle compartment) sucked into the case 21 from the suction port 27 by the operation of the blower 24 is purified by passing through the filter 25. Air is blown out of the air outlet 28 into the vehicle interior.

B) When the sunroof 22 is open The opening / closing door 29 is moved to the open position by the weight of the opening / closing door 29 because the sunroof 22 is opened upward and the movement of the lever 31 is released. . In this case, the opening 2
3 is opened, and the upstream surface of the filter 25 is
9 to the case 21 from the suction port 27.
As shown in FIG. 12, the air sucked into the inside is discharged to the outside of the vehicle compartment through the opening 23 opened upstream of the filter 25 without passing through the filter 25.

(Effect of this embodiment) As described above, while the sunroof 22 is open, the opening / closing door 29 is
By closing the upstream surface of the filter 5, dirty air in the vehicle cabin does not pass through the filter 25.
It is possible to extend the life of the device. In addition, sunroof 2
When the door 2 is opened, the opening / closing door 29 opens the opening 23, so that a ventilation passage communicating between the vehicle interior and the exterior of the vehicle interior is formed inside the case 21. In this case, since the blower 24 of the air purifier 20 can be used as a ventilation fan, the ventilation in the vehicle interior can be more effectively performed.
Further, the opening / closing door 29 is linked with the opening / closing of the sunroof 22.
Therefore, there is no need to use a dedicated actuator for driving the opening / closing door 29. In this case, the structure can be simplified and the cost can be reduced.

(Variation of Sixth and Seventh Embodiments) If the vehicle is parked under a scorching sun for a long time, the interior of the vehicle becomes hot, and it is uncomfortable to get in the car. In addition, if the air conditioner is operated in a state where the temperature in the vehicle compartment is high, the heat load is large, so that a large power is required and the energy consumption increases. So, if you park for a long time under the summer sun,
The air purifier 20 may be operated by opening the sunroof 22 when parking. Thereby, the hot air in the passenger compartment is sucked into the case 21 by the blower 24 and then discharged to the outside of the passenger compartment from the opening 23 without passing through the filter 25. In addition, discomfort when riding in a car can be reduced. The air purifier 20 shown in the sixth and seventh embodiments is mounted on a vehicle having a tilt-up type sunroof 22 (tilt roof), but is a slide type that opens and closes substantially parallel to the ceiling surface. It can also be applied to a vehicle having a sunroof.

(Eighth Embodiment) FIG.
2 is a perspective view of peripheral parts of the air purifier 20. FIG. The present embodiment is an example showing a method for fixing the air purifier 20 in a case where a sunshade 32 that can shield the sunroof 22 is provided. The sunshade 32, as shown in FIG.
The driver seat side and the passenger seat side are independently disposed, and are supported by rails 33 so as to be slidable in the front-rear direction. The rails 33 are provided in pairs on the driver's seat side and the passenger's seat side, respectively, and are fixed to a housing 34 incorporated in the ceiling surface of the vehicle. The air purifier 20 has, for example, the same configuration as that described in the above-described fourth to seventh embodiments, and includes a driver-side sunshade 32A and a passenger-side sunshade 3A.
2B, it is arranged facing the sunroof 22, and is fixed to the rails 33 on the driver's seat side and the passenger's seat side with screws 35 and the like (see FIG. 13).

According to this configuration, the sun shade 32 is divided into the driver's seat side and the passenger's seat side, so that the air cleaner 20 faces the sun roof 22 without interfering with the opening and closing operation of the sun shade 32. Can be attached. Also, the driver in the driver seat and the passenger in the passenger seat,
Since the sunshade 32 above the head can be opened and closed at the discretion of each person, convenience is improved, and each person's comfort can be maintained. Further, in the above configuration, since the air purifier 20 can be fixed to the rail 33 of the sunshade 32, the air purifier 2 can be fixed.
There is no need to prepare a dedicated bracket to fix the zero, and the number of types of parts can be reduced.

(Ninth Embodiment) FIG.
2 is a perspective view of peripheral parts of the air purifier 20. FIG. The present embodiment is another example showing a method for fixing the air purifier 20 having the sunshade 32. As shown in FIG. 15, the sunshade 32 is provided in a substantially U-shape with a concave portion 32 a formed at the front side in the center in the vehicle width direction, and is slid in the front-rear direction by two rails 33 fixed to the housing 34. Supported as possible.

The air purifier 20 includes, for example, the above-described fourth to seventh air cleaners.
As shown in FIG. 16, the bracket 3 has the same configuration as that described in the embodiment, and is arranged facing the front of the central portion of the sunroof 22 and provided integrally with the case of the air purifier 20.
6 and is fixed to the housing 34. According to this configuration, the air purifier 20 can be attached to the sunroof 22 without interference with the opening and closing operation of the sunshade 32 only by forming the concave portion 32 a in the sunshade 32. Further, since the air purifier 20 can be attached to a vehicle not equipped with the air purifier 20 only by forming the concave portion 32a in the existing sunshade 32, it is not necessary to make a major modification on the vehicle side. . Further, by integrating the bracket 36 for fixing the air purifier 20 with the case, there is an advantage that parts management can be easily performed.

It is needless to say that the configurations shown in the eighth and ninth embodiments can be applied to both cases where the sunroof 22 is fitted into the vehicle body and cannot be opened and closed, and where the sunroof 22 can be opened and closed. When the sunroof 22 is opened and closed, a slide type in which the sunroof 22 is opened and closed substantially in parallel with the ceiling surface of the vehicle or a tilt-up type in which the rear end of the sunroof 22 is lifted upward when the sunroof 22 is opened may be used. .

[Brief description of the drawings]

FIG. 1 is a sectional view of an air purifier (first embodiment).

FIG. 2 is a top view of the air purifier.

FIG. 3 is a view showing an installation state of an air purifier.

FIG. 4 is a sectional view of an air purifier (second embodiment).

FIG. 5A is a top view of the air purifier and FIG.
It is a B sectional view (b) (3rd Embodiment).

FIG. 6 is a top view (a) and a cross-sectional view (b) taken along line CC of the air purifier (fourth embodiment).

FIG. 7 is a side sectional view (a) and a top view (b) showing an attached state of the air purifier.

FIG. 8 is a top view (a) and a DD sectional view (b) of the air purifier (fourth embodiment).

FIG. 9 is a top view (a) and an EE cross-sectional view (b) of the air purifier (fifth embodiment).

FIG. 10 is a cross-sectional view of an air purifier showing an air flow when a sunroof is open (sixth embodiment).

FIG. 11 is a cross-sectional view of an air purifier showing an air flow when a sunroof is closed (sixth embodiment).

FIG. 12 is a cross-sectional view of an air purifier showing an air flow when a sunroof is open (seventh embodiment).

FIG. 13 is a perspective view of an air purifier and peripheral components of the air purifier (eighth embodiment).

FIG. 14 is a plan view showing an attached state of the air purifier (a).
And FIG. 13B is a view thereof (Eighth embodiment).

FIG. 15 is a perspective view of an air purifier and peripheral components of the air purifier (ninth embodiment).

FIG. 16 is a plan view showing an attached state of an air purifier (ninth embodiment).

[Explanation of symbols]

 (First to Third Embodiments) 1 Vehicle air purifier 2 Rear tray 3 Case 4 Dust removal filter (dust removal unit) 6 Deodorization filter (filter / deodorization unit) 7 Ultraviolet lamp 9 Suction port 10 Blow outlet 12 Grill 14 Rear window 15 Reflector (Fourth to ninth embodiments) 20 Air purifier 21 Case 22 Sunroof (glass surface) 23 Opening 25 Filter 25A Deodorizing unit 25B Dust removing unit 27 Inlet 28 Outlet 29 Opening door 32 Sunshade 32A Driver side Sunshade 32B Sunshade 32a on passenger side recess 33 Rail

Continuing from the front page (72) Inventor Yuichi Kajino 1-1-1, Showa-cho, Kariya-shi, Aichi Pref. Denso, Inc. (72) Inventor Kenji Suwa 1-1-1, Showa-cho, Kariya-shi, Aichi pref. ) Inventor Yuji Honda 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside DENSO Corporation

Claims (18)

[Claims] 1. A vehicle air purifier installed on a rear tray of a vehicle, comprising: a filter having a photocatalyst adhered to a surface thereof and capable of regenerating a deodorizing function by the oxidizing power of the photocatalyst; and a case accommodating the filter therein. In the case, the case is provided with a grill in an opening provided as an air inlet or an air outlet, the grill is provided at a tilt angle of about 45 degrees with respect to the rear tray in the direction of the rear window of the vehicle, The air filter for a vehicle, wherein the filter is installed at a position where sunlight coming into the case through the opening shines. 2. A vehicle air purifier provided on a rear tray of a vehicle, comprising: a filter having a photocatalyst attached to a surface thereof and capable of regenerating a deodorizing function by the oxidizing power of the photocatalyst; and a case accommodating the filter therein. In the case, the case is provided with a grill at an opening provided as an air inlet or an air outlet, and a reflective material that reflects sunlight on the surface of the grill is provided. An air purifier for a vehicle, wherein the air purifier is provided at a position where sunlight reflected by a material enters the case. 3. A vehicle air purifier installed on a rear tray of a vehicle, comprising: a filter having a photocatalyst attached to a surface thereof and capable of regenerating a deodorizing function by the oxidizing power of the photocatalyst; and a case accommodating the filter therein. In the case, the case is provided with a grill at an opening provided as an air inlet or an air outlet, and the grill is provided to be openable and closable with respect to the case, and the filter is provided in the case from the opening. An air purifier for a vehicle, wherein the air purifier is installed in a position where sunlight enters. 4. A vehicle air purifier installed on a rear tray of a vehicle, comprising: a filter having a photocatalyst attached to a surface thereof and capable of regenerating a deodorizing function by the oxidizing power of the photocatalyst; and a case accommodating the filter therein. In the above, the case is provided with a grill at an opening provided as an air inlet or an air outlet, and the grill is inclined toward the rear window direction of the vehicle at an inclination angle of about 45 degrees with respect to the installation surface of the rear tray. A reflector that reflects the sunlight is provided on the surface of the grill, and the filter is installed at a position where the sunlight reflected by the reflector and entering the case hits. Characteristic vehicle air purifier. 5. A vehicle mounted on a surface close to a glass surface of a vehicle, comprising: a filter having a surface attached with a photocatalyst and capable of regenerating a deodorizing function by the oxidizing power of the photocatalyst; and a case accommodating the filter therein. An air purifier, wherein the case is provided with an opening on a surface facing the glass surface, and the opening is closed by the glass surface. An air purifier for a vehicle, wherein the air purifier is disposed at a position where sunlight that enters the vehicle is exposed. 6. A vehicle having a filter having a photocatalyst attached to its surface and capable of regenerating a deodorizing function by the oxidizing power of the photocatalyst, and a case accommodating the filter therein, and being mounted close to a glass surface of the vehicle. An air purifier, wherein the case is provided with a light transmitting member capable of transmitting ultraviolet light on a surface facing the glass surface, and the filter is exposed to sunlight passing through the light transmitting member and entering the inside of the case. An air purifier for a vehicle, which is disposed at a position. 7. The air purifier for a vehicle according to claim 5, wherein the glass surface is a sunroof provided on a ceiling surface of the vehicle. 8. The air cleaner for a vehicle according to claim 5, wherein the glass surface is a rear window of the vehicle. 9. An openable sunroof comprising: a case having an air inlet and an air outlet; and a filter with a photocatalyst disposed in an air passage from the inlet to the outlet in the case. A vehicle air purifier attached to a ceiling surface of a vehicle, the case having an opening in a wall surface facing the sunroof on an upstream side of the filter, and the opening is opened and closed by the sunroof. An air purifier for a vehicle, comprising: 10. An open / close sunroof comprising: a case having an air inlet and an air outlet; and a filter with a photocatalyst disposed in an air passage from the inlet to the outlet in the case. An air purifier for a vehicle attached to a ceiling surface of a vehicle, the case having an opening in a wall surface facing the sunroof on an upstream side of the filter, and an opening / closing door that opens and closes the opening. The air purifier for a vehicle, wherein the opening / closing door is formed of a member that can transmit ultraviolet light, and is capable of closing an upstream side of the filter when the opening is opened. 11. The air purifier for a vehicle according to claim 10, wherein the opening / closing door is provided in conjunction with opening / closing of the sunroof, and closes an upstream side of the filter when the sunroof is opened. An air purifier for a vehicle, wherein the opening is closed when the vehicle is closed. 12. A vehicle air purifier according to claim 9, wherein said sunroof has a tilt-up opening / closing mechanism in which a rear end side lifts upward when opened. For air purifier. 13. A vehicle air purifier mounting structure according to claim 7, further comprising a sunshade capable of shielding said sunroof, wherein said sunshade is located on a driver seat side and a passenger seat side. Wherein the vehicle air purifier is arranged between the sunshade on the driver's seat side and the sunshade on the passenger's seat side. Construction. 14. The vehicle air purifier mounting structure according to claim 13, wherein said vehicle air purifier is fixed to a rail for sliding said sunshade. Mounting structure of the purifier. 15. A mounting structure for an air purifier for a vehicle according to claim 7 or 9 to 12, further comprising a sunshade capable of shielding said sunroof, and a front side of a central portion of said sunshade in a vehicle width direction. A mounting structure for an air purifier for a vehicle, wherein a recess is formed in the air cleaner, and the air purifier for a vehicle is arranged by utilizing a space generated in the concave when the sunshade is closed. 16. The vehicle air purifier according to claim 5, wherein the filter has a deodorizing section having a deodorizing function, and a dust removing section for removing dust in the air. An air purifier for a vehicle, wherein a dust removing section is configured separately from the dust removing section, and the deodorizing section is arranged downstream of the dust removing section in the air. 17. The vehicle air purifier according to claim 5, wherein the filter has a deodorizing section having a deodorizing function, and a dust removing section for removing dust in the air. An air purifier for a vehicle, wherein a dust remover is integrally formed. 18. A vehicle air purifier according to claim 1, further comprising an ultraviolet lamp for irradiating an ultraviolet ray to a surface of said filter to which said photocatalyst is attached.