JP2007253866A - Window defogger control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a window defogger control device capable of preventing the temperature rise of a storage unit for storing a window glass, and suppressing the power consumption. <P>SOLUTION: The window defogger control device has a BCM (control unit) 20 which opens/closes an opening part 6 formed in a vehicle body S and controls the power supply to a heating coil (a defogger) 9 mounted on a window glass 8 to be stored in the storage unit 7 provided on the vehicle body S when opening the opening part 6. The BCM 20 has an opening/closing detection unit (an opening/closing detection means) 22 for detecting the opening/closing state of the window glass 8. When the opening/closing detection unit 22 detects the storage of the window glass 8, the power supply to the heating coil 9 is stopped. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a window defogger control device that controls power supply to a defogger attached to a window glass.

  2. Description of the Related Art Conventionally, there has been known a window glass provided with a hot-wire defogger and provided so as to be movable up and down in an opening of a vehicle body (for example, see Patent Document 1).

  In addition, there is known a defogger timer control device that supplies power to a defogger provided on a window glass of a vehicle for a predetermined time to cause the defogger to generate heat and eliminate condensation, frost, etc. on the window glass (for example, patents). Reference 2).

In this defogger timer control device, the driver arbitrarily sets a predetermined time for supplying power to the defogger.
Japanese Patent Laid-Open No. 5-283272 JP-A-9-86353

  By the way, in the window glass provided with the above-mentioned hot wire type defogger and the timer control device of the defogger, when the window glass is housed inside the vehicle during the power supply to the defogger, the power is supplied at least until a predetermined time elapses. It has been continued.

  For this reason, there has been a risk that the temperature of the storage portion for storing the window glass will rise due to heat from the defogger.

  Further, since the power supply to the defogger is continued for a predetermined time, there is a problem that the battery power is consumed wastefully.

  Accordingly, an object of the present invention is to provide a wind defogger control device capable of preventing the temperature rise of the storage portion for storing the window glass and suppressing the power consumption.

  In order to solve the above-mentioned problem, the invention according to claim 1 opens and closes an opening formed in the vehicle body, and when the opening is opened, the window glass is housed in a housing portion provided in the vehicle body. A window defogger control device having a control unit for controlling power supply to a defogger attached to the defogger, wherein the control unit includes an open / close detection means for detecting an open / closed state of the window glass, and the open / close detection means When the storage of the window glass is detected, the power supply to the defogger is stopped.

  According to the first aspect of the present invention, when the opening / closing detection means detects the storage of the window glass, the power supply to the defogger is stopped, so that the window glass stored in the storage unit is not warmed, and Temperature rise can be prevented.

  Further, since the power supply to the defogger is stopped at the same time as the window glass is stored, it is possible to suppress wasteful power consumption.

  Next, the best mode for carrying out a wind defogger control apparatus according to the present invention will be described with reference to the drawings.

  A pickup truck 1 shown in FIG. 1 has a vehicle body S and a cargo bed (hereinafter referred to as a cargo bed) N fixed to the vehicle body S.

  The vehicle body S has a vehicle compartment portion 2 and a lower structure portion (not shown) extending rearward from the vehicle compartment portion 2, and the loading platform N is fixed on the lower structure portion. A front wheel 3 is attached to the passenger compartment 2 and a rear wheel 4 is attached to a lower structure (not shown).

  Further, as shown in FIG. 2, an opening 6 surrounded by the rear pillar 5 is formed on the rear wall 2a of the vehicle compartment 2, and below the opening 6 is formed inside the rear wall 2a. The storage part 7 is located.

  The storage unit 7 is provided with a lifting / lowering means (power window unit) 10, and the window glass 8 is disposed so as to be lifted / lowered through the lifting / lowering means 10.

  Here, the elevating means 10 includes a guide rail 11 extending in the vertical direction on the inner surface of the storage portion 7, a glass holder 12 that engages with the guide rail 11 and holds the lower end portion of the window glass 8, It has the wire cable 13 attached to this glass holder 12, and the traction machine 14 which pulls this wire cable 13 up and down.

  When the wire cable 13 is pulled by the traction machine 14, the glass holder 12 moves up and down along the guide rail 11 while holding the window glass 8. Thereby, the window glass 8 can be moved up and down.

  The window glass 8 is a flat glass formed in such a size that the opening 6 can be closed. The window glass 8 is moved up and down by the lifting means 10 to enter and exit the storage unit 7 to open and close the opening 6. . The opening / closing state of the opening 6 by the window glass 8 is detected by detecting the position of the glass holder 12 that holds the window glass 8.

  A plurality of heat rays (defoggers) 9 are printed on the surface of the wind glass 8 on the side of the compartment 2.

  These hot wires 9 extend along the left-right direction of the window glass 8 at a predetermined interval, and are electrically connected to a BCM (body control module) 20 shown in FIG.

  The BCM 20 is a control unit that controls power supply to the heat wire 9, and includes a power control unit 21 and an open / close detection unit (open / close detection unit) 22.

  The power control unit 21 is supplied with an ON / OFF signal from a defogger switch 23 provided in the vehicle interior 2, and this ON / OFF signal and an opening / closing described later from the open / close detection unit 22. The power supply to each heat wire 9 is controlled based on the closing signal.

  Here, when the ON signal is input from the defogger switch 23, the power control unit 21 supplies power to each heat wire 9 and stops the power supply when the OFF signal is input. The power control unit 21 continues power supply while the close signal is input from the open / close detection unit 22, and stops power supply when the open signal is input.

  The open / close detection unit 22 is electrically connected to the elevating means 10 and detects the open / closed state of the window glass 8, that is, the position of the glass holder 12. Here, the open / close detection unit 22 determines that the window glass 8 is closed when the glass holder 12 is in the uppermost position, and outputs a closing signal, so that the glass holder 12 is positioned at a position other than the uppermost position (even slightly below). If the window glass 8 is in the position (1), the window glass 8 is determined to be open and an open signal is output.

  An open / close signal of the window glass 8 output from the open / close detection unit 22 is input to the power supply control unit 21.

  Next, the operation of the wind defogger control device of the present invention will be described.

  FIG. 4 is a flowchart showing the defogger control processing of the window defogger control device.

  In this defogger control process, first, the power control unit 21 of the BCM 20 detects the switch state based on the ON / OFF signal from the defogger switch 23 (step 1), and determines whether or not the defogger switch 23 is ON. Judgment is made (step 2).

  If the defogger switch 23 is OFF (NO in step 2), the process returns to step 1.

  On the other hand, when the defogger switch 23 is ON (in the case of YES in step 2), power supply from the battery (not shown) to each heat wire 9 is started (step 3).

  Next, based on the position of the glass holder 12 of the lifting / lowering means 10, the open / close detection unit 22 of the BCM 20 detects the lifting / lowering state of the lifting / lowering means 10, that is, the opening / closing state of the window glass 8 (step 4). It is determined whether or not it is open (step 5).

  When the window glass 8 is closed (NO in step 5), the open / close detection unit 22 outputs a close signal (step 6).

  On the other hand, when the window glass 8 is open (YES in step 5), the open / close detection unit 22 outputs an open signal (step 7).

  Both of the open / close signals are input to the power supply control unit 21. When the close signal is input, the power supply control unit 21 continues to supply power to the heat wire 9 and returns to step 4. As a result, the power supply control unit 21 continues to supply power while the close signal is input from the open / close detection unit 22.

  When the open signal is input, the power control unit 21 determines that the window glass 8 has been stored in the storage unit 7 and stops supplying power to the heat wire 9 (step 8).

  As a result, the window glass 8 stored in the storage unit 7 is not heated, and a temperature rise in the storage unit 7 can be prevented.

  Furthermore, since it is detected that the window glass 8 has been accommodated, the power supply to the heat wire 9 is stopped, so that it is possible to suppress wasteful power consumption.

  Although one embodiment according to the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the above-described embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  In the above-described embodiment, the defogger attached to the window glass provided on the rear wall surface 2a of the passenger compartment 2 of the pickup truck 1 is controlled. Any defogger attached to a possible window glass may be used.

  Moreover, in the above-mentioned embodiment, although it is what is called a hot-wire type defogger which supplies power to the heat wire 9 to generate heat and defrosts it, defrosting may be performed by blowing warm air on the wind glass. Even in this case, wasteful power consumption can be suppressed by stopping the power supply to the hot air blowing device by detecting the storage of the wind glass.

  Further, even if the power supply to the defogger is performed for a predetermined time set in advance, the power supply to the defogger is stopped if the window glass is accommodated within the predetermined time. Thereby, while suppressing the temperature rise in a storage part, suppression of power consumption can be aimed at.

It is a perspective view which shows the external appearance of the pick-up truck provided with the wind defogger control apparatus which concerns on this invention. It is explanatory drawing which shows the structure of the window glass provided with the window defogger control apparatus which concerns on this invention. It is a block diagram which shows the structure of the window defogger control apparatus which concerns on this invention. It is the flowchart which showed the defogger control process by the window defogger control apparatus which concerns on this invention.

Explanation of symbols

6 Opening part 7 Storage part 8 Wind glass 9 Heat ray (defogger)
20 BCM (control unit)
22 Open / close detection unit (open / close detection means)
S body

Claims (1)

A control unit that opens and closes an opening formed in the vehicle body and controls power supply to a defogger attached to a window glass that is stored in a storage unit provided in the vehicle body when the opening is opened. A wind defogger control device,
The control unit includes an open / close detection unit that detects an open / closed state of the window glass, and when the open / close detection unit detects the storage of the window glass, the power supply to the defogger is stopped. Control device.

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