JPS62166144A - Windshield defroster structure - Google Patents

Abstract

PURPOSE:To secure an immediate effect of fine performance in a wide range by upward opening a front blowout hole blowing conditioning air in the front of a defroster duct and opening a side blowout hole in the outer verge part of the defroster duct. CONSTITUTION:Conditioning air is introduced to a defroster duct 10 through an intermediate duct 9 and blowed out for an upper front glass 5 from a front blowout hole 12 and a side blowout hole 13. A direction of blowing-out for the front can aslant, backward and upward blow along a front window 5 by means of a front air direction control wall 14. A direction of blowing-out for the side can blow conditioning air throughout the front verge part of a side window 23 from both ends of a vehicle width direction of the front window 5 by means of a side air direction control wall 15. Accordingly, an immediate effect of fine performance can be secured throughout the side window 23 from the outer verge part of the front window 5.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention can remove or prevent fogging at both ends of the front window in the vehicle width direction or on the side windows.
This invention relates to a windshield defroster structure.

[Prior art]

2. Description of the Related Art Vehicles such as automobiles are usually provided with a windshield defroster that blows conditioned air guided from an air conditioner onto the front window in order to remove or prevent fogging on the front window.

Conventional windshield defcosters concentrate air conditioning in front of the driver's and passenger's seats to first remove fog from relatively important areas in front of the driver's and passenger's seats, such as during a cold start. Since wind is blown out, there is a problem in that the quick effect of clearing performance at both ends of the front window in the vehicle width direction is low.

Furthermore, in order to ensure visibility through the side windows during cold start, etc., many vehicles are equipped with a side window defroster or 1-night demister that blows conditioned air onto the side windows.

In a vehicle equipped with a windshield defroster and a side demister as described above, the windshield defroster and side demister have air outlets that blow out air conditioned air independently of each other, and each outlet is connected to a separate duct or a side demister. It is connected to the air conditioner via a duct that branches out from the middle. For this reason, the structure of the duct that distributes the conditioned air is complicated, and there is a problem that the workability of installing the duct is relatively low. In addition, since the direction of the conditioned air blown out from the windshield defroster outlet and the direction of the conditioned air blown out from the side demister outlet are not continuous, the side light flows from the outer edge of the front window in the vehicle width direction. There is also the problem that the conditioned air blown out from these outlets is difficult to reach the area extending over the front edge of the air conditioner, resulting in areas where the quick effect of clearing performance is low.

[Purpose of the invention]

The present invention has been made in consideration of the above-mentioned circumstances, and provides a windshield defroster that can ensure rapid clearing performance even in the range from the outer edge of the front window in the vehicle width direction to the side windows. - The purpose is to provide structure.

[Structure of the invention]

In order to achieve the above object, a windshield defroster structure according to the present invention has a defroster duct that blows out conditioned air supplied from an air conditioner from below the front window toward the front window. In the structure, the defroster duct extends in the vehicle width direction, and a front air outlet formed to extend in the vehicle width direction is formed at the front edge of the defroster duct. This is characterized in that a side air outlet extending in the longitudinal direction of the side window is formed at the outer edge.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

As shown in FIG. 1, a darts lower 3 is provided at the front of a vehicle compartment 1 to partition the vehicle compartment 1 and an engine compartment 2, and a cowl box 4 is provided above the lower darts. This cowl box 4 has a cowl front panel 4a that stands up flush with the darts lower 3 and this cowl front panel 4.
a cowl panel lower 4b that is connected to the lower edge and projects in an L-shape toward the vehicle interior 1; and a cowl panel upper 4 whose rear edge is joined to the rear upper edge of the cowl panel lower 4b.
C, and a reinforcement 4d fixed to the upper surface of the front part of the cowl panel upper 40. 1, the lower edge of the front window 5 is fixed to the upper side of the front part of the cowl box 4 using a known method. The space between the upper edge of the cowl front 1-panel 4a and the rear edge of the bonnet 6 is sealed by a sealing part +A7, and the space between the rear edge of the cowl front 1-panel 16 and the front edge of the cowl panel upper 4C is sealed. A henchration air intake port 8 is formed in which also serves as a passage space for a wiper arm (not shown).

A pair of left and right intermediate ducts 9 connected to an air conditioner (not shown) is arranged on the rear side of the cowl box 4, and a defroster is provided at the upper end of each intermediate duct 9, extending from the rear of the cowl box 4 to the upper side of the +1ii portion thereof. Duct 10
is connected. As shown in FIG. 2, each defroster duct 10 is formed into a flat picture shape whose front edge is curved in a semi-arched shape along the lower edge of the front window 5, and the front edge of the upper wall 11 The front air outlet 12 is opened over the entire length. Continuing from the front air outlet 12, a side air outlet 13 extending in the vehicle length direction is opened at the outer edge of the upper surface of the defroster duct l-10 in the vehicle width direction. The front air outlet 12 may be oriented so that the conditioned air blown out from the air outlet 12 is directed diagonally backward and upward along the inner surface of the front window 5.

Here, the front air outlet 12 is opened at the front edge of the upper wall 11 of the defroster duct 1O so as to extend upward and in the vehicle width direction along the front edge. In addition, in order to regulate the blowing direction of the conditioned air blown out from the front air outlet 12, as shown in FIGS. A front wind direction control wall 1 that projects downward from the upper wall 11 of the defroster duct 10 over a height h at a distance d.
4 is provided. Furthermore, in order to regulate the blowing direction of the conditioned air blown out from the side air outlet 13, a suitable distance from the side air outlet 13 is provided inside each defroster duct 10, continuous with the front wind direction control wall 14. A side wind direction control wall 15 is provided which projects downward from the upper wall 11 of the defroster duct 10 over a height h at a distance of i%lt d. Since the defroster duct 10 is connected to the intermediate duct 9 at its inner edge in the vehicle width direction, the outlet pressure decreases at the outer edge in the vehicle width direction of the defroster duct 10, which has a relatively long run-up distance from there. This may cause a decrease in the amount of air blown out. In order to prevent the air volume from decreasing at the outer edge of the defroster duct 100 in the vehicle width direction, the bottom wall 16 of the defroster duct 10 is
asymptotically approaches the upper wall 11 as it approaches the outer edge of the defroster duct 10 in the vehicle width direction, as shown in FIG.

As shown in FIG. 6, the defroster duct 10 has a continuous front air outlet 12 and a side air outlet 13.
It is covered with a cover 18 having a pair of semi-arculated ventilation holes 17 so as not to obstruct the flow of the conditioned air from the front window 5 to the front window 5. This cover 18 constitutes a part of the instrument panel 19, and is removably attached to the main body 20 of the instrument panel 19. The instrument panel I9 is provided with ventilation grilles 21 and 22 at the center and on both left and right sides, which blow out the conditioned air guided from the air conditioner into the vehicle interior l. Here, a pair of left and right side demisters 24 for removing fogging from the side windows 23 are provided on the instrument panel 19 on a trial basis in the same manner as in the prior art.

In the above configuration, the conditioned air is introduced into the defroster duct 10 via the intermediate duct 9, and the front air outlet 12
and is blown out from the side air outlet 13 toward the front window 5 above these.

The dynamic pressure of the conditioned air supplied from the intermediate duct 9 into the defroster duct 10 is greatly increased by expanding the cross-sectional area of the flow path and preventing the conditioned air from being received by the front wind direction control wall 14 or the side wind direction control wall 15. The conditioned air is blown out from the front outlet 12 and the side outlet 13 mainly due to static pressure. As a result, the blowing pressure from the front air outlet 12 becomes uniform in the vehicle width direction, and the air volume distribution can be increased or decreased in proportion to the width of the front air outlet 12 in the longitudinal direction. The pressure and scenery of the conditioned air blown out from the side outlet 13 are also controlled in the same way. The blowing direction of the conditioned air toward the front can be set depending on the height of the front wind direction control wall 14 and the distance from the front air outlet 12. As a result, as shown by arrow A in FIG.
The air can be blown up diagonally backward and upward along the . The direction of air-conditioned air blowing out to the side is determined by the side wind direction control wall 1.
5 and the distance from the side air outlet 13 can be set arbitrarily. As a result, as shown by arrow B in FIG. 2, the conditioned air can be blown from both ends of the front window 5 in the vehicle width direction to the front edge of the side window 23. In addition, the above side demister-2
The blowing direction of the conditioned air from 4 is indicated by arrow C in FIG.

Further, the defroster duct 10 is connected to the cowl box 4.
Since the front air outlet 12 and the side air outlet 13 that are continuous with the front air outlet 12 and the side air outlet 13 are provided on the front edge and the outer edge in the vehicle width direction, the defroster duct 10 and the inner edge side of the defroster duct 10 in the vehicle width direction are The longitudinal dimension of the cowl box 4 is not limited by the intermediate duct 9 connected to the rear end, and the longitudinal dimension of the cowl box 4 can be made sufficiently large. As a result, the amount of displacement of the darts lower 3 that can be absorbed by the deformation of the cowl box 4 in the event of a frontal collision can be sufficiently increased, and the front window 5 can be sufficiently prevented from falling off or falling in the event of a frontal collision. Furthermore, since the longitudinal dimensions of the cowl box 4 can be made sufficiently large, a space can be secured within the cowl box 4 to accommodate the henchration air passage and the wiper device. especially,
When the defroster duct 10 is formed flat, the height of the cowl box 4 can be increased, so that the front f
This is more advantageous in preventing the front window 5 from falling off in the event of a JJ accident, and the space inside the cowl box 4 is further enlarged to improve ventilation performance as a ventilation air passage. The degree of freedom is increased. In particular, the defroster duct 1
0 is formed flat, there is a defroster duct 10 between the cowl box 4 and the instrument panel 6.
Since the height of the space required for storing the instrument panel 6 can be reduced, the installation height of the instrument panel 6 can be reduced.

In the above embodiment, a front wind direction control wall 14 or a side wind direction control wall 1 is provided inside the defroster duct 10 and protrudes downward from the upper wall 11 of the defroster duct 10.
5 and the amount of protrusion into the defroster duct 10. The blowing direction of the conditioned air is controlled by the position of the defroster duct 5 and the amount of protrusion into the defroster duct 10. 15 is omitted, and the front air outlet 12, the side air outlet 13, or the inlet I
- A decorative member having a louver may be provided at the ventilation port 17 of the lumen panel 6, and the direction of the air conditioned air may be controlled by the louver.

Further, in the above embodiment, the front air outlet 12 and the side air outlet I
3 are continuous, but it is also possible to open them apart from each other.

Furthermore, although the same side demister 24 as in the conventional case is provided, it is also possible to omit this to reduce the number of parts and improve assembly workability.

〔Effect of the invention〕

In the windshield defroster structure of the present invention, a front air outlet for blowing out conditioned air is opened upward at the front of the defroster duct, and a side air outlet is opened at the outer edge of the defroster duct in the vehicle width direction. As a result, the air-conditioned air can be sufficiently blown downward from the front windshield from the front air outlet to ensure quick clearing performance in front of the windshield, and at the same time, the air-conditioned air can be directed from the side air outlet to the vehicle width of the front windshield. By spraying from the outer edge of the front window to the sight window, it is possible to obtain fast-acting clearing performance from the outer edge of the front window in the vehicle width direction to the side window. This has the effect that it can be obtained over a period of time.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the main part of an embodiment of the present invention, Fig. 2 is a perspective view showing the distribution of conditioned air blown out from the defroster duct, and Fig. 3 is a plane view of the defroster duct. 4 is a longitudinal sectional side view of the defroster duct, FIG. 5 is a front view of the defroster duct, and FIG. 6 is a perspective view of an instrument panel incorporating the defroster duct I. In the figure, 1 is the passenger compartment, 5 is the front window, 10 is the defroster duct, and 11 is the defroster duct 10.
In the wall, 12 is a front air outlet, and 13 is a side air outlet.

Claims (1)

[Claims] 1. In a windshield defroster structure having a defroster duct that blows conditioned air supplied from an air conditioner toward the front window from below the front window, the defroster duct extends in the vehicle width direction, and the front edge of the defroster duct A windshield comprising a front air outlet extending in the vehicle width direction, and a side air outlet extending in the vehicle length direction of the defroster duct at the outer edge of the defroster duct in the vehicle width direction. Defroster structure.