JPS641163Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a defroster nozzle structure for an automobile.

In cars, to remove fog from window glass,
A defroster device is installed that blows some of the warm air heated by the heater onto the inner surface of the window glass.
The defroster nozzle of the defroster device consists of a cylindrical base 3a that is fitted and fixed to the tip of the defroster duct 2 of the heater unit 1, and a lower edge of the front window glass 4, as shown by reference numeral 3 in FIG. The windshield 4 has a flat and wide air outlet 3b extending along the windshield 4, and blows warm air onto the inner surfaces of the driver's seat side half and the passenger seat side half of the windshield 4, respectively.

In the defroster nozzle 3 as described above,
From the cylindrical base 3a to the flat and wide air outlet 3b, the cross-sectional shape gradually changes from cylindrical to flat, but the air from the air outlet 3b is directed to the left and right halves of the front window glass 4. In order to blow the air evenly, it is necessary to provide an air guide section 31 on the upstream side of the outlet 3b (see, for example, Japanese Utility Model Publication No. 1983-129158, Japanese Utility Model Publication No. 56-12144, etc.).

Conventionally, the air guide section 31 is usually configured by, for example, connecting the front and rear surfaces of the flat part of the defroster nozzle 3 by partially protruding inward, and partially crushing the air passage. Although the air guide function is good, there is a slight breeze area where the airflow amount is significantly insufficient on the downstream extension of the air guide section 31, as shown by the dotted line A in FIG.
As shown in the figure, the area where the window glass 4 can be defogged, that is, the clear pattern, is extremely uneven, which poses a problem in terms of ensuring visibility.

As a measure to solve the above problem, as shown in FIG.
It is conceivable to form a section 31 to allow ventilation to some extent and to prevent an extreme reduction in the amount of air blown out on the downstream extension line of the air guide section 31.

However, the defroster nozzle 3 is generally made of an inexpensive blow molded product, and in blow molding, when trying to form a very narrow gap a as shown in Figure 3, both wall surfaces inevitably bridge due to thermal deformation, etc. As a result, if you try to adopt the method shown in Figure 3, you will have to change the formation of the defroster nozzle to an expensive method other than blow molding. .

The present invention aims to solve the conventional problems as described above.

That is, in the present invention, as shown in FIG.
Either the front or rear wall surface of the flat part of the defroster nozzle 3 is partially protruded inward of the air passage, and the peripheral wall of the protruding part 32 forms the air guiding part 31, and the other wall surface The outwardly protruding portion 33 and the protruding portion 32 form a detour air passageway 34 that straddles the air guiding portion 31 .

The gap between the protruding parts 32 and 33 forming the detour air passage 34 is set to be the same size as the gap between the front and rear surfaces of the flat air passage in the other general part, or slightly narrower than that. However, in any case, it goes without saying that the gap size is set so that the opposing wall surfaces of the protrusions 32 and 33 never bridge during blow molding.

According to the present invention configured as described above, the air guide section 31 formed by the peripheral wall of one of the inward protrusions 32 sufficiently secures a predetermined air guide function, and then Since there is also considerable ventilation from the detour air passage 34, as shown by the solid line B in FIG.
It is possible to obtain an accurate sunny pattern with far fewer irregularities compared to the previous model, and it is possible to significantly improve forward visibility.Coupled with the fact that the defroster nozzle can be made into an inexpensive blow molded product, it is practical. This can have a huge effect.

It goes without saying that the present invention can be applied not only to a defroster nozzle for a front window glass, but also for any type of window glass such as side and rear windows.

[Brief explanation of drawings]

Fig. 1 is a front explanatory view showing an example of a defroster nozzle to which the present invention is applied, and Figs. 2 and 3 are sectional views of a portion corresponding to Fig. 1 XX showing the conventional air guide structure, respectively. , FIG. 4 shows an embodiment of the present invention, and is a sectional view of a portion corresponding to the line XX in FIG. 1. 3... Defroster nozzle, 31... Wind guiding section, 3
2, 33...protrusion, 34...detour air passage.

Claims (1)

[Scope of utility model registration request] One of the front and rear surfaces of the defroster nozzle forming a flat and wide air passage is partially protruded inward from the air passage, and the peripheral wall of the protrusion forms an air guiding part, and the other side is made to protrude outward. A defroster nozzle structure characterized in that the outwardly protruding portion and the inwardly protruding portion form a detour air passage that straddles the air guiding portion.