JPS62132131A - Solar radiation quantity detecting instrument for vehicle - Google Patents

Abstract

PURPOSE:To enable the quantity of solar radiation to be correctly and accurately detected by providing one heat collector of a heat collecting member with one solar radiation quantity detector and providing the other heat collector with the other solar radiation quantity detector. CONSTITUTION:One heat collector 12 of a heat collecting member 7 is provided with one solar radiation quantity detector 17 and the other heat collector 15, with the other solar radiation quantity detector 18. When solar radiation falls on a solar radiation quantity detecting instrument, the heat collectors 12 and 15 convert light to heat. The solar radiation detectors 17 and 18 detect the quantity of solar radiation via heat collectors 12 and 15, respectively. Therefore, when the solar radiation is incident from right, left, before or behind, the quantities of solar radiation sensed by the two detectors 17 and 18 are greatly different from one another. Thus, the solar radiation quantity detecting instrument can detect the incident direction of the solar radiation as well as the quantity thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a solar radiation amount detection device for a vehicle used as a control means for temperature control of a vehicle air conditioner.

(Prior art and its problems) As a conventional solar radiation amount detection device of this type for vehicles,
As disclosed in Publication No. 8-37694 (see Fig. 4), a concave portion serving as a base portion, and a left side projecting wall C and a right side projecting wall d serving as a light shielding portion are integrated into a panel a under the windshield of a vehicle. A rectangular tube-shaped case body made of opaque resin has
A case g is provided at the upper end of the case body e and includes an optical filter f that adjusts the amount of light, and a light receiving element for the left direction and a light receiving element i for the right direction are provided in the recess of the case g. It was something.

However, the solar radiation detector has light receiving elements for left and right directions, and i
, the response to solar radiation is too fast and it is easy to malfunction (hunting due to solar radiation 0N10F F).
When a light-transmitting optical filter f has an oil film, cigarette smoke, etc. attached to its surface, the refractive index changes, which causes the light-receiving element to change.
There were problems such as the relative sensitivity of i changing.

(Objective of the Invention) The present invention was made in view of the above circumstances, and is capable of detecting not only the amount of solar radiation but also the direction of incidence, and unlike conventional light receiving elements, the response is too fast and malfunctions. We have developed a solar radiation detection device for vehicles that can accurately and accurately detect solar radiation without having the problem of being easily exposed to sunlight, and without changing the sensitivity due to adhesion of oil film, cigarette smoke, etc. The purpose is to provide.

(Means for Solving the Problems) In order to achieve the above object, the present invention has one heat collecting part and the other heat collecting part in a part of the vehicle interior that is directly exposed to sunlight, and has both heat collecting parts. A heat collecting member is provided in which the heat part is thermally insulated by a heat insulating member, and one solar radiation amount detector is provided on one of the heat collecting parts of this heat collecting member, and the other solar radiation amount detector is provided on the other heat collecting part. It has a structure with a container.

(Function) When solar radiation enters from the left and right or front and back, the two solar radiation detectors sense a difference in the amount of solar radiation so that not only the amount of solar radiation but also the direction of incidence is detected.

(Example) The present invention will be explained below based on FIGS. 1 to 3.

FIG. 1 shows a longitudinal section of the solar radiation amount detection device for a vehicle according to the present invention, and 1 in the figure is an instrument panel as a part of the vehicle that is directly exposed to sunlight. A hole 2 is formed, and a case 3 is mounted in this mounting hole 2. This case 3 is made of synthetic resin, etc., and the top surface of the case 3 is open.
A connector mounting hole 4 and a ventilation hole 5 are provided at the bottom thereof. A cover-like heat collecting member 7 is provided in the upper opening 6 of this case 3, and this heat collecting member 7 includes one heat collecting plate 8 and the other heat collecting plate 9. A heat insulating member 10 is provided between the heat plate 8 and the other heat collecting plate 9 to thermally isolate the two. A holding member 11 is attached to the inner surface of one of the heat collecting plates 8 by fixing means such as welding, and both the one heat collecting plate 8 and the holding member 1.1 are made of aluminum or the like. , one of the heat collecting parts 12
It consists of

A ventilation hole 13 is provided in the heat collecting plate 8 of one of the heat collecting parts 12 .

A holding member 14 is attached to the inner surface of the other heat collecting plate 9 by fixing means such as welding, and the holding member 14 is attached to the other heat collecting plate 9 and the holding member 1.
4 are both made of aluminum or the like, and constitute the other heat collecting section 15.

The heat collecting plate 9 of the other heat collecting part 15 is provided with ventilation holes 16 .

One solar radiation detector 17 is provided on the holding member 11 of one heat collecting section 12 , and the holding member 14 of the other heat collecting section 15 is provided with one solar radiation amount detector 17 .
The other solar radiation amount detector 18 is provided.

A small glass-coated thermistor or the like is used for these solar radiation amount detectors 17 and 18.

A connector 19 is attached to the connector attachment hole 4 of the case 3, and terminals 17a and 17b of one solar radiation amount detector 17 are connected to the inner end of the connection terminal 20.21 of the connector 19. The inner ends of the connection terminals 21 and 22 of the connector 19 are connected to the terminals 18a and 18b of the other solar radiation amount detector 18.
is connected.

Further, lead wires 23, 24, 25 are connected to the outer ends of the connecting terminals 20, 21, 22 of the connector 19, and these connecting portions are covered with heat shrink tubes 26, 27, 28. Note that the heat collecting plate 8.9 may be made of a net-like body.

Next, the operation will be explained.

When solar radiation hits the solar radiation detection device configured as described above, the heat collecting parts 12 and 15 each convert the light into heat, and one solar radiation detector 17 converts the light into heat through one heat collecting part 12. The other solar radiation amount detector 18 detects the amount of solar radiation, and the other solar radiation amount detector 18
5 to detect the amount of solar radiation.

Therefore, if solar radiation enters from the left and right or front and back,
The amounts of solar radiation detected by the two solar radiation amount detectors 17 and 18 are significantly different.

For this reason, the solar radiation amount detection device is able to detect not only the amount of solar radiation but also the direction of incidence of solar radiation.

Terminals 17a, 17 of one solar radiation detector 17 as shown in FIG.
Lead wires 23 and 24 connected to terminals 18a and 18b of the other solar radiation amount detector 18
4.25 to the input side of the control unit 29, one output side of the control unit 29 is connected to the actuator 30 of one grill and blower, and the other output side of the control unit 29 is connected to the actuator 30 of the other grill and blower. For example, when the solar radiation direction is biased to one side and the amount of solar radiation to one heat collecting section 12 increases, the output of one solar radiation amount detector 17 will be lower than that of the other solar radiation amount detector 18. The control unit 29 operates the actuator 30 of one of the grilles and the blower to blow cold air to one side of the vehicle interior.

(Effects of the Invention) As detailed above, the solar radiation amount detection device according to the present invention has the following features:
A heat collecting member having one heat collecting part and the other heat collecting part and thermally insulating both heat collecting parts by a heat insulating member is provided in a part of the vehicle interior that is directly exposed to sunlight.

This heat collecting member is characterized in that one solar radiation amount detector is provided on one heat collecting portion, and the other solar radiation amount detector is provided on the other heat collecting portion.

Therefore, if solar radiation enters from the left and right or front and back, 2
Since the amount of solar radiation detected by each solar radiation amount detector is greatly different, it is possible to detect not only the amount of solar radiation but also the direction of incidence. There is no need to arrange them at the front and rear, which is advantageous in terms of cost and ease of installation.

In particular, the solar radiation detector detects the solar radiation through the heat collecting part, so it does not have the problems of conventional light-receiving elements such as being too quick in response and prone to malfunction. Even if the solar radiation is attached, the sensitivity of the solar radiation detector will not change due to this, and the solar radiation can be detected accurately and accurately.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is an explanatory diagram of the detection state of solar radiation amount and incident direction in the solar radiation amount detection device for a vehicle according to the present invention, and FIG. FIG. 4, which is an explanatory view of the usage state of the solar radiation amount detection device for a vehicle, is a longitudinal cross-sectional view of a conventional solar radiation amount detection device for a vehicle. 7... Heat collecting member, 12.15... Heat collecting part, 17.18
...Solar radiation detector.

Claims (1)

[Claims] 1. A heat collecting member having one heat collecting part and the other heat collecting part and thermally isolated from both heat collecting parts by a heat insulating member is provided in a part of the vehicle interior that is directly exposed to sunlight. A solar radiation amount detection device for a vehicle, characterized in that one solar radiation amount detector is provided on one heat collecting portion of a heat collecting member, and the other solar radiation amount detector is provided on the other heat collecting portion.