JPH06286456A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To provide an air conditioner for a vehicle securing the comfortableness on the driver's seat side with a low air conditioning capability by providing an air blowout port around a display face or in the display face in the vehicle displaying the vehicle information on the display face in an instrument panel with an electric means. CONSTITUTION:A projection type display device 2 is provided with a projector 8, an intermediate reflecting mirror 9, a projection screen 10, and a fitting plate 11, and it is arranged on the back side of an instrument panel 12. The fitting plate 11 is clipped and supported by a car body frame 14 on the back side of the instrument panel 12 at the middle portion on the back face of a vehicle. A driver's seat face blowout port 38 is opened around the upper side of the projection screen 10 in a meter through grille, and a face duct is formed into a linear duct shape. Since the projection type display device 2 is employed, cables of instruments are not concentrated on its back side, the space can be secured, the blast resistance of the driver's seat side face duct 39 is small, and the comfortableness on the driver's seat side can be secured with a low air conditioner capability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner mounted on a vehicle equipped with a projection type display device for projecting and displaying vehicle information on a display surface provided in front of a driver's seat.

[0002]

2. Description of the Related Art In a vehicle air conditioner, a center face outlet is provided in a central portion of an instrument panel and a side face outlet is provided near a side glass in order to blow out blown air to the upper body of an occupant. . The center face outlet and the side face outlets are provided so that the outlet air shape is rectangular and the outlet air velocity is high in order to improve the reachability of the cool air during the cooling operation.

[0003]

In a conventional air conditioner for a vehicle, instruments are arranged on an instrument panel in front of a driver's seat, and cables for instruments are densely packed on the back side of the instrument panel. Therefore, a duct that guides blown air to the side face outlet on the driver's side is arranged around the rear part of the instruments. Therefore, since the ventilation resistance of the duct increases, even if the same target outlet temperature is obtained, it is necessary to create a higher air volume and a lower outlet temperature (during cooling) as much as the ventilation resistance increases. Also,
Since the shape of the air outlet is rectangular so that the air velocity at the air outlet is high, if the direction of the air outlet louver is adjusted so that the air outlet blows directly on the body of the occupant, if it hits the part where the air outlet hits. There are gaps and no comfort is obtained. Therefore, except at the time of cool down (during rapid cooling), as shown in FIG.
It is common practice to adjust the direction of the air conditioner so that the high-velocity air (shown by the arrow) does not directly hit the upper body of the occupant 110. Greater ability is required when cooling the upper body of an occupant.

There is an example in which a so-called wide flow outlet having a large width in the vehicle width direction is adopted as a face outlet on the passenger seat side. In this case, since the blower outlet wind velocity decreases due to the wider blower outlet, the reachability of the blown wind deteriorates.
As shown in (3), low-velocity blowout air (indicated by an arrow) can be uniformly blown out over a wide range. Therefore, even if the cool air blown out from the wide flow outlet 120 is directly applied to the upper body of the occupant 110 and used, the comfort is not impaired, and the temperature distribution is made uniform to improve the comfort. Therefore, by applying the cool air blown from the wide flow outlet 120 directly to the upper body of the occupant 110 and using it, it is possible to give the occupant 110 a comfortable feeling with a lower air conditioning capacity. However, such a wide flow outlet can be used as the face outlet on the passenger side, but it can be used on the instrument panel on the front of the driver's seat as described above. It is difficult because the instruments are arranged. The present invention was made based on the above circumstances, and its purpose is to:
An object of the present invention is to provide a vehicle air conditioner that can ensure comfort on the driver's side with a lower air conditioning capacity.

[0005]

In order to achieve the above object, the present invention provides a vehicle equipped with a display device for displaying vehicle information by electric means on a display surface in an instrument panel in front of a driver's seat, A driver's seat side face outlet for blowing air toward the upper body of the driver is provided around the display surface or in the display surface, and a driver's side face duct that guides blown air to the driver side face outlet Is arranged on the back side of the display surface as a technical means.

[0006]

According to the present invention having the above-described structure, a display device for displaying vehicle information by electric means is provided on the display surface in the instrument panel in front of the driver's seat so that the driver can drive the vehicle around or within the display surface. It is possible to provide a seat side face outlet and arrange a driver side face duct that guides blown air to the driver side face outlet on the back side of the display surface.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a vehicle air conditioner of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of a vehicle air conditioner. The vehicle air conditioner 1 of this embodiment is installed in a vehicle equipped with a projection type display device 2 (see FIG. 4), and as shown in FIG. 3, a duct 3 for guiding blown air into the vehicle interior, It has a blower unit 4 for introducing air into the duct 3 and sending it into the vehicle compartment, a refrigerating cycle 5 constituting cooling means, a heater core 6 constituting heating means, and an air conditioner control device 7.

Here, the projection type display device 2 will be described. As shown in FIG. 4, the projection display device 2 includes a projector 8, an intermediate reflecting mirror 9, a projection screen 10, and a mounting plate 11. The projector 8 and the intermediate reflecting mirror 9 are
It is arranged on the back side of an instrument panel 12 which is supported by the mounting plate 11 and is arranged on the front surface of the vehicle interior. The mounting plate 11 extends in the front-rear direction of the vehicle, and a pair of metal fittings 13 are fixed to an intermediate portion of the back surface thereof, and the metal fittings 13 sandwich the body frame 14 located on the back side of the instrument panel 12 from above. It is supported by the body frame 14. The projector 8 is attached to a vehicle front side end portion (left side end portion in FIG. 4) of the mounting plate 11, and the intermediate reflecting mirror 9 is an upright wall portion 11a bent upward at the vehicle rear side end portion of the mounting plate 11. Installed on. The mounting plate 11 is made of a non-translucent material, and its upper surface is matt-treated.

The projector 8 includes a case 8a having a cylindrical shape and a light source 8 coaxially arranged in the case 8a.
b, a reflector 8c, a condenser lens system 8d, a transmissive liquid crystal panel 8e, and a magnifying lens system 8f. Case 8
"a" is fixed to the upper surface of the mounting plate 11 along the front-rear direction of the vehicle, and an opening 8g is provided on the front end surface on the vehicle rear side. The light source 8b (for example, a halogen lamp) is arranged on the rear end side of the case 8a and emits a light beam toward the opening 8g. The reflector 8c is disposed on the rear end side of the light source 8b and plays a role of increasing the area average brightness of the light source 8b. As a result, the luminous flux of the light source 8b is efficiently emitted from the opening 8g.
It is emitted toward. The condenser lens system 8d is arranged on the tip side of the light source 8b and converts the light fluxes from the light source 8b and the reflector 8c into parallel light fluxes. Liquid crystal panel 8e
Configures a liquid crystal display with a drive circuit (not shown),
By being driven and operated by the drive circuit, the parallel light flux from the content lens system 8d is transmitted as a parallel light flux representing desired vehicle information. The magnifying lens system 8f transmits the parallel light flux from the liquid crystal panel 8e to the standing wall portion 11 of the mounting plate 11.
A magnified image is formed on the intermediate reflecting mirror 9 attached to a.

The intermediate reflecting mirror 9 is a flat glass surface on which aluminum is vapor-deposited to form a reflecting surface. The intermediate reflecting mirror 9 reflects the incident light beam from the magnifying lens system 8f and makes it enter the projection screen 10. The projection screen 10 is provided on the meter-through grill 15 (see FIG. 1) incorporated in the instrument panel 12 in front of the driver's seat and is formed by subjecting the surface of the synthetic resin plate to white treatment. The vehicle information by the reflected light flux from is displayed as an enlarged projection image. It should be noted that the instrument panel 12 is provided with an opening 12a for passing a reflected light beam from the intermediate reflecting mirror 9 toward the projection screen 10.

Next, the air conditioner 1 will be described with reference to FIGS. 1 to 3. The blower unit 4 includes a blower case 18 having an inside air inlet 16 and an outside air inlet 17,
An inside / outside air switching damper 19 that switches between the inside air introduction port 16 and the outside air introduction port 17, a centrifugal fan 20 that produces an air flow by rotation, and a fan motor 21 that rotationally drives this centrifugal fan 20. The duct 3 includes a cooling unit 22, a heater unit 23, a branch box 24, and a branch duct (described later). The cooling unit 22 includes a cooler case 22a connected to the downstream side of the blower case 18, an expansion valve 25 and a refrigerant evaporator 26 of the refrigeration cycle 5 housed in the cooler case 22a.
(Both see FIG. 3). The heater unit 23 is a heater case 2 connected to the downstream side of the cooler case 22a.
3a, the heater core 6 housed in the heater case 23a, and the air mix damper 27 (see FIG. 3). The heater core 6 heats air passing through the engine cooling water as a heat source, and the ratio of the amount of air passing through the heater core 6 to the amount of air flowing around the heater core 6 depending on the opening degree of the air mix damper 27. Is adjusted.
Further, in the heater unit 23, blower outlet switching dampers 28 and 29 (see FIG. 3) for switching the blower outlets described below according to the blower outlet mode are provided.

The branch box 24 is connected to the heater unit 23 and is provided for branching and sending the air blown from the heater unit 23 to the upper half of the occupant in the driver seat direction, the passenger seat direction, and the central direction. There is. The branch duct includes a defroster duct 31 communicating with the defroster outlet 30, a foot duct 33 communicating with the foot outlet 32, and a center face duct 3 communicating with the center face outlet 34.
5. From the passenger side face duct 37 communicating with the passenger side face outlet 36, the driver side face duct 39 communicating with the driver side face outlet 38, and the side face duct 41 communicating with the side face outlet 40 Become. The center face duct 35, the passenger side face duct 37, the driver side face duct 39, and the passenger side side face duct 41 are respectively provided in the branch box 24.
It is connected to the. The driver-side side face duct 41 is connected to the end of the driver-side face duct 39.

As shown in FIG. 2, the center face air outlet 34 opens at a substantially central portion of the instrument panel 12 provided on the front surface of the passenger compartment, and the front passenger seat side face air outlet 3 is provided.
6 is a so-called wide-flow outlet, which is wide (in the vehicle width direction) opening to the instrument panel 12 in front of the passenger seat, and the driver-side face outlet 38 is located inside the meter-through grill 15 and around the upper side of the projection screen 10. Open.
The driver-side face duct 39 that guides the blown air to the driver-side face outlet 38 has a linear duct shape (see FIG. 1), and extends from the branch box 24 to the meter-through grill 1.
It is arranged up to the back side of 5.

As shown in FIG. 3, the refrigerating cycle 5 comprises functional parts of a refrigerant compressor 42, a refrigerant condenser 43, a receiver 44, the expansion valve 25 and a refrigerant evaporator 26.
The refrigerant pipes 45 are connected in an annular shape. The number 46 in the figure is a cooling fan that blows air to the refrigerant condenser 43. When the auto switch 47 provided on an air conditioner operation panel (not shown) is turned on, the air conditioner control device 7 controls each air conditioner (inside / outside air switching damper 19, fan motor) so as to keep the temperature inside the vehicle at the set temperature. Two
1, air mix damper 27, outlet switching damper 28,
29, the refrigerant compressor 42, etc.) is automatically controlled. Further, during the cooling operation in which the outlet mode is the face mode, the air volume level of the fan motor 21 is determined according to the sliding position of the driver's seat (hereinafter referred to as the seat position). In addition,
The set temperature is set by the temperature setting switch 48 provided on the air conditioner operation panel. In addition, the seat position is the potentiometer 4 provided under the driver's seat.
9 is detected.

Next, the operation of this embodiment will be described based on the processing procedure of the air conditioner control device 7. FIG. 5 is a flowchart showing a processing procedure of the air conditioner control device 7. First,
The set temperature is input from the air conditioner operation panel, and the seat position is input from the potentiometer 49 (step 100). Next, the air volume level of the fan motor 21 is determined from the air volume characteristic diagram shown in FIG. 6 based on the set temperature and the seat position input in step 100 (step 110). This air volume characteristic diagram shows the relationship between the distance L from the driver's seat side face outlet 38 to the driver and the temperature reached by the driver's head based on the air volume.
Is 700 (mm) and the head reaching temperature, that is, the set temperature is 23 ° C., the required air volume is about 100 m ³ / h.
The distance L is calculated based on the seat position, and the temperature reached by the head is determined by the set temperature. Next, the output voltage to the fan motor 21 is determined so that the air volume level determined in step 110 is obtained (step 12).
0).

As a result, each face outlet 34, 3
Cold air is blown from 6, 38, 40 toward the upper body of the occupant. Here, since the front-face air outlet 36 on the passenger seat side is a wide-flow outlet that is wide open in the vehicle width direction, low-speed cold air can be blown to the entire upper body of the passenger seat occupant. Therefore, even if the occupant's body is directly exposed to the cool air, the occupant does not feel annoyed, and a comfortable feeling can be obtained. The driver side face outlet 38
By opening the meter through grill 15 arranged in front of the driver, cool air can be blown from the front to the upper body of the driver. Further, in the present embodiment, since the projection type display device 2 is adopted, it is possible to secure a space without the cables of instruments and the like being densely packed on the back side of the projection screen 10. Therefore, the driver's seat side face duct 39 can be linearly arranged from the branch box 24 to the back side of the meter through grill 15. As a result, the ventilation resistance of the driver's seat side face duct 39 is reduced as compared with the conventional case in which the duct is arranged bypassing the rear part of the instruments, and accordingly, the low air conditioning capacity (low air volume and higher blowout amount). It becomes possible to secure the comfort on the driver's side by the temperature).

[Modification] In the present embodiment, the operation when the auto switch 47 is turned on has been described, but when the air volume is fixed and used by the occupant's manual operation, the air volume shown in FIG. 6 is used. From the characteristic diagram, the head reaching temperature may be determined from the air flow level and the distance L, and the opening degree of the air mix damper 27 may be controlled so as to obtain the head reaching temperature. In this embodiment, an example in which the vehicle information is projected on the projection screen 10 has been shown, but a projection type display device for projecting and displaying the vehicle information on a predetermined space may be used without providing the projection screen 10. . Further, not only the projection type display device 2 described in the present embodiment but also a display device for displaying vehicle information on the display surface by electric means, a space for installing the driver side face duct 39 on the back side of the display surface. Therefore, the present invention can be similarly implemented.

In the vehicle air conditioner of the present invention, the driver seat side face outlet is provided around or within the display surface provided in front of the driver seat, and the driver seat side face is provided on the back side of the display surface. Ducts can be placed. Therefore, it is possible to reduce the ventilation resistance of the duct by making the driver's seat side face duct into a linear duct shape. As a result, the comfort of the driver's seat can be secured with a low air conditioning capacity.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a vehicle air conditioner according to a present embodiment.

FIG. 2 is a perspective view showing an instrument panel portion in a vehicle compartment.

FIG. 3 is an overall schematic diagram of a vehicle air conditioner.

FIG. 4 is a cross-sectional view of a projection display device.

FIG. 5 is a flowchart showing a processing procedure of an air conditioner control device.

FIG. 6 is an air volume characteristic diagram related to the operation of the present embodiment.

FIG. 7 is an explanatory view of the air blown out from the face air outlet (prior art).

FIG. 8 is an explanatory diagram of blown air blown out from a wide flow outlet.

[Explanation of symbols]

 1 Air Conditioner for Vehicle 2 Projection Display Device (Display Device) 8 Projector (Electrical Means) 10 Projection Screen (Display Surface) 12 Instrument Panel 38 Driver Side Face Air Outlet 39 Driver Side Face Duct

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshito Ito 1-1 Showa-cho, Kariya city, Aichi Nihon Denso Co., Ltd. (72) Inventor Hirofumi Kiyohara 1-1-Showa town, Kariya city, Aichi Nidec Within the corporation

Claims (1)

[Claims] 1. A vehicle provided with a display device for displaying vehicle information by electric means on a display surface in an instrument panel in front of a driver's seat, the upper body of a driver being around the display surface or in the display surface. For a vehicle characterized in that a driver-seat-side face outlet for blowing air toward the driver-side face is provided, and a driver-seat-side face duct that guides blown air to the driver-seat-side face outlet is arranged on the back side of the display surface. Air conditioner.