JPS61161358A - Air blowing-off device of vehicular air conditioning device - Google Patents

Abstract

PURPOSE:To enable to instantly indicate the temperature of blowing-off air at each blowing-off port by a structure wherein a color-changing member, which changes its color by reacting to ambient temperature, is arranged on the portion, which is exposed to the air flow passing through an open member and at the same time can be recognized visually from a compartment. CONSTITUTION:An open member 2 is made of resin material and equipped with a proper number of passages 12, through each of which air branch flows. The air branch is a proportion of blowing-off air and bent on the midway to an exhaust hole 13. The back surface of liquid crystal film 1 is applied to the bend portion so as to be directly exposed to the stream of the blowing-off air. The temperature range for coloration of the liquid crystal film 1 with color-changing characteristic can be choiced by selecting the composition of the liquid crystal. The liquid crystal film can be applied to all the open members 2, which form several vent outlets open on the instrument panel part at the front part of a compartment or the color-changing liquid crystal film 1 is bonded on the periphery of the opening of each open member.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for blowing out conditioned air from an air conditioning unit into a vehicle interior.

[Prior Art] Japanese Patent Laid-Open No. 54-153452 discloses that a display panel showing the configuration of an air conditioning unit displays the flow direction and temperature of the blown air for each outlet opening.

[Problems to be Solved by the Invention] In such conventional devices, the overall operating status of the air conditioning unit is displayed, but it is not possible to immediately see what kind of air is being blown out from each actual outlet. Difficult to recognize.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems, and has an opening member opening toward the passenger compartment, which is exposed to the air flow passing through the opening member, and is air-flowing from the passenger compartment. It is characterized by disposing a color-changing member that changes color in response to ambient temperature in a visually perceivable location.

[Operation and Effect] Since the color-changing member changes color in response to the temperature of the air blown out from its outlet, it is possible to monitor the temperature of the blown air at each outlet without providing an electrical temperature sensor or indicator. It can be displayed immediately.

[Example] Fig. 1 shows an assembly diagram of an air blowing device according to the present invention, in which the opening member 2 is cylindrical and allows air flow from an air conditioning unit (not shown) to pass from the rear R to the front F. and supply it into the vehicle interior. A mouth-shaped color-changing liquid crystal film 1 is adhered to the front surface of the aperture member 2 so as to cover the periphery of the opening of the aperture member 2. The opening member 2 is provided with a hole 3 through which a branched flow of blown air, shown in detail in FIG. 2, passes. 20
is a frame that protects the liquid crystal film 1.

In FIG. 2, the opening member 2 is made of a resin material, and is provided with an appropriate number of passages 12 through which the aforementioned branched flow passes. This branched flow is a part of the blown air, and is bent on the way to the exhaust hole 13, and the back surface of the liquid crystal film 1 is applied to this bent part and exposed directly to the blown air flow. It is now possible to

The liquid crystal film 1 having color-changing properties is known, and includes, for example, a mixture of 20 to 80% of a liquid crystal having a specific nematic phase and 80 to 20% of at least one selected from inorganic acids or organic acid esters of cholesterin. By selecting the composition, it is possible to select the temperature range in which the color develops.

As one embodiment, the present invention is applicable to all opening members (2) that form several vent outlets opened in the instrument panel section at the front of the vehicle compartment, and a color-changing liquid crystal is provided around the opening of each opening member. Film (1) is glued.

Then, when the air conditioning unit is in the vent blowout mode, an airflow with a temperature of several degrees Celsius to several tens of degrees Celsius is blown out from the opening member 2 depending on the case, and this airflow is blown out into the passenger compartment through the louver 11. On the other hand, it is also applied to the liquid crystal film 1 via the branch passage 12, thereby changing the color of the liquid crystal film 1 to one corresponding to the temperature of the liquid crystal itself. Therefore, the passenger can recognize the temperature of the airflow simply by visualizing the area around the opening of the blowout opening member in the direction in which the airflow is generated. Note that it is desirable that the liquid crystal film 1 exhibits a cooler color as the temperature becomes lower. This is because it can give passengers a visually cool feeling.

Note that the shape of the liquid crystal film 1 is not limited to the opening shape, and even when the same opening shape is used, films whose negative sides are rod-shaped may be combined into the opening shape. Further, the method for attaching the liquid crystal film 1 is not limited to the above embodiment.

[Brief explanation of drawings]

FIG. 1 is an assembly diagram showing an embodiment of the present invention, and FIG. 2 is a sectional view of the embodiment. DESCRIPTION OF SYMBOLS 1...Liquid crystal film (color-changing film), 2...Opening member, 12...Diversion passage.

Claims (1)

[Claims] In a device for blowing out conditioned air from an air conditioning unit toward a vehicle interior, an opening member opening toward the vehicle interior;
A vehicle air conditioner comprising: a color-changing member that changes color in response to ambient temperature and is disposed in a part of the opening member that is exposed to the air flow passing through the opening member and is visually recognizable from the vehicle interior. Equipment air blowing device.