JPS6216085Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating device for an automobile.

Automotive heating systems are equipped with a fan that sucks in cold air (outside air or air inside the vehicle) and a heater core that uses coolant after cooling the engine as a heat source.While the cold air passes through the heater core, it is heated and becomes warm air. ,
Generally, the warm air is blown out from the hot air outlet near the passenger's feet, and the warm air is blown onto the inner surface of the window glass from a defroster duct to defrost the windshield (see Japanese Utility Model Publication No. 48-2591).

Generally, the air distribution to the defroster side is controlled by the opening degree of a damper that controls the amount of hot air blown out from the heating hot air outlet. The structure is configured to increase the amount of air distributed to the area.

Therefore, when the defroster is used, the amount of hot air blown out from the heating hot air outlet becomes extremely small, creating a problem in that a sufficient feeling of heating cannot be given to the occupants.

The present invention is intended to address the above-mentioned conventional problems, and will be described below with reference to embodiments shown in the accompanying drawings.

In Figures 1 and 2, 1 is a heater unit equipped with a fan 2 that sucks cold air (outside air or air inside the vehicle) and a heater core 3 that uses coolant after cooling the engine as a heat source. Cold air is sucked in from the port 4 and heated by the heater core 3.
The heated air is blown out near the passenger's feet from the warm air outlet 5 at the bottom, and the heated air passes through the defroster duct 6 and is blown onto the inner surface of the window glass 8 from the defroster nozzle 7 at the tip. There is.

Reference numeral 9 denotes a cold air outlet, and when the heating is not in use, the outside air is sucked in by the fan 2 and blown out from the cold air outlet 9 toward the vicinity of the passenger's head, or when the heating is in use, the cold air sucked in by the fan 2 is blown out. A part of the cold air outlet 9
It has become possible to measure the so-called cold head and feet fever more and more.

When using a defroster that increases the amount of hot air distributed to the defroster duct 6, the amount of air blown from the heating hot air outlet 5 decreases significantly as described above, which is the same as in the conventional configuration. In the present invention, the defroster duct 6 is provided with a nozzle-shaped or small-hole-shaped outlet 6a facing the vicinity of the passenger's knees A, and a portion of the warm air flowing inside the defroster duct 6 is directed from the outlet 6a to the occupant's knees. It is constructed so that it blows out towards the surrounding area.

In the embodiment shown in FIGS. 1 and 2, the nozzle-shaped outlet 6
In this example, a small hole-shaped outlet 6a is installed in the upper part of the defroster duct 6 to blow hot air diagonally downward toward the knees, but as shown in FIG. The heater unit 1 may be provided near the base of the defroster opening 10 of the heater unit 1 of No. 6 so as to blow hot air obliquely upward toward the vicinity of the knees.

As described above, according to the present invention, when the defroster is in use, a small amount of hot air is blown out from the heating hot air outlet 5 toward the vicinity of the passenger's feet, and a portion of the defroster hot air is directed to the defroster hot air passage. The provided air outlet 6a blows air toward the knees where the heating effect is highest, and extremely effective heating can be performed with a relatively small amount of warm air that does not impair the purpose of ensuring defroster performance. The structure is simple and the cost is low, and together with this, it can bring about great practical effects.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional side views and plan explanatory views of essential parts showing one embodiment of the present invention, and Fig. 3 is a plan explanatory view showing another embodiment of the present invention, one half of which is shown in cross section. There is. 1... Heater unit, 2... Fan, 3...
Heater core, 4... Suction port, 5... Warm air outlet,
6... Defroster duct, 6a... Air outlet, 7...
...Defroster nozzle, 8...Window glass.

Claims (1)

[Scope of utility model registration request] A heating hot air outlet that blows warm air near the occupant's feet, a cold air outlet that blows cold air toward the occupant's head area, and a defroster passage that blows warm air toward the inner surface of the window glass. What is claimed is: 1. A heating device for an automobile, characterized in that the defroster passage is provided with an outlet for blowing out a portion of the warm air flowing through the passage toward the vicinity of the knees of an occupant.