JP3154852U - Lighting device for automobile sun visor - Google Patents

Abstract

An illuminating device for an automobile sun visor that raises the illuminance of an illuminating means in response to the face of an occupant seated in a passenger seat approaching a mirror is provided. A sun visor 10, a support member 11 that rotatably supports the sun visor 10, and a mirror 12 that is attached to the inner surface of the sun visor 10. A plurality of illumination LEDs 14 are arranged in series on the outer peripheral edge of the mirror 12. The separation sensor 15 includes a transmission unit 15a and a reception unit 15b, and measures the distance between the position of the sun visor 10 and the face position of the occupant. [Selection] Figure 1

Description

  The present invention is an illuminating device for a sun visor mainly used in a passenger seat of an automobile, and the sun visor has a built-in mirror and illumination means so that the face of an occupant seated in the passenger seat approaches the mirror. Correspondingly, the present invention relates to an illuminating device for an automobile sun visor that raises the illuminance of the illuminating means by making it variable.

Conventionally, as an example of this type of conventional technique, there is a technique disclosed in Japanese Utility Model Laid-Open No. 6-23809 shown in FIG. Describing this, in FIG. 5, the sun visor 1 is composed of a support arm 2 and a light shield 3. The support arm 2 is formed of a hollow pipe, for example, is attached to a corner portion on the passenger seat side, and is supported on the ceiling 4 so as to be rotatable in the horizontal direction or the vertical direction by the support pipe 2. A light shield 3 is attached to the tip of the support arm 2 so as to be rotatable in the vertical direction. The light shielding body 3 has a front frame 5A and a rear frame 5B that are fitted to each other, and the inside is a hollow portion. The front frame 5A is formed of a transparent acrylic resin or polycarbonate resin having a thickness of 2 to 3 mm, and the rear frame 5B is formed of an opaque ABS resin having a thickness of 2 to 3 mm.

A reflector 6 is fixed along the inner surface of the rear frame 5B. The reflector 6 has a folded plate shape, for example, and is provided over almost the entire length in the width direction of the rear frame 5B. In addition, two sockets (not shown) are installed at the center of the inner surface of the rear frame 5B, and a light bulb, that is, a light emitter 7 is attached to each socket. The light bulb 7 is electrically connected to an automobile battery (not shown) by a lead wire (not shown) inserted through the inside of the light shield 3 and the hollow portion of the support arm 2. By operating a switch (not shown) provided on the switch, it can be switched on and off. The switch is built in the light shield 3, and its operation knob 8 protrudes from the lower edge of the light shield 3. The switch is turned on and off by moving the operation knob 8 left and right.

Japanese Utility Model Publication No. 6-23809

Since the conventional technology has the above configuration, the following problems existed.
That is, in the prior art shown in FIG. 5, for example, when an occupant seated in a passenger seat of a car performs makeup or the like in the vehicle, the operation knob 8 of the sun visor 1 is operated in the ON direction so that the light bulb 7 After illuminating your face etc. with the light on, you need to visually check the face etc. with a separately prepared mirror, for example you must hold cosmetics with one hand and hold the mirror with the other hand Therefore, there was a problem that both hands were blocked and workability was poor. In addition, when performing the above-described operations such as makeup during night driving, the light bulb 7 is continuously turned on, and the brightly lit face and the state of the inside of the vehicle are disturbed for a long time and are placed inside the windshield. The reflected driver's seat space is extremely bright, and it is difficult for the driver to see the dark scenery outside the vehicle, and the car cannot be driven safely, and the lighting energy is lost. In addition, in the prior art, there was a sun visor with a mirror, but even if the occupant's face was brought close to the sun visor with a mirror, the illuminance could not be changed and it was always illuminated as a cosmetic mirror In addition, there is a problem in that it is inappropriate and does not prevent loss of lighting energy.

The illuminating device for an automobile sun visor according to the present invention has been devised to solve the above-mentioned problems, and comprises the following configuration and means.
That is, according to the first aspect of the invention, in the configuration comprising the sun visor, the support member that rotatably supports the sun visor, and the mirror provided in the sun visor, A plurality of LEDs arranged in series and a plurality of LEDs; a distance between the face of the occupant and the position of the sun visor, which is arranged in the vicinity of the mirror; and a lighting unit built in the sun visor is driven. And a separation sensor for deriving an illumination signal to the illumination LED.

Since the lighting device for an automobile sun visor according to the present invention has the above-described configuration, the following effects can be obtained.

According to the first aspect of the present invention, in a configuration comprising a sun visor, a support member that rotatably supports the sun visor, and a mirror provided in the sun visor, a plurality of outer peripheral edges of the mirror are provided. A plurality of lighting LEDs arranged in series, and a distance between the face of the occupant and the position of the sun visor, which is arranged in the vicinity of the mirror, and driving a lighting unit built in the sun visor. There is provided a lighting device for an automobile sun visor, comprising a separation sensor for deriving an illumination signal to the LED for illumination.
With this configuration, lighting energy is reduced because the illuminance is reduced or turned off when the occupant increases the illuminance on the face, etc. when not using the mirror provided in the sun visor. In order to make effective use of the system, the brightness is set so that it does not interfere with the driving operation of the driver, contributing to safe driving.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating a lighting device for an automobile sun visor according to the present invention, in which a lighting LED is caused to emit light by bringing a face of an occupant close to the lighting device. It is a block diagram of the electric circuit for operating LED for illumination with which it mounted | wore in the sun visor for motor vehicles in the illuminating device of the sun visor for motor vehicles based on this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an ultrasonic separation sensor showing an example of a separation sensor used in a lighting device for an automobile sun visor according to the present invention, wherein (a) is a front view and (b) is an operation conceptual diagram of the separation sensor. It is an infrared dissociation sensor which shows the other example of the distant sensor used for the illuminating device of the sun visor for motor vehicles concerning this invention, (a) is a front view, (b) is a bottom view, (c) is (a). FIG. It is a front view at the time of mounting | wearing the ceiling of a motor vehicle which shows an example of the illuminating device of the sun visor for motor vehicles in the prior art.

Hereinafter, an embodiment of a lighting device for an automobile sun visor according to the present invention will be described in detail with reference to FIGS.
FIG. 1 is a perspective view showing a lighting device for an automobile sun visor according to the present invention, in which a lighting LED is caused to emit light by bringing a passenger's face close to the lighting device. FIG. 2 is a configuration diagram of an electric circuit for operating an illumination LED mounted on the automobile sun visor in the automobile sun visor illumination device according to the present invention. FIGS. 3A and 3B are ultrasonic separation sensors showing an example of a separation sensor used in the lighting device for an automobile sun visor according to the present invention, wherein FIG. 3A is a front view, and FIG. 3B is an operation conceptual diagram of the separation sensor. It is.
FIG. 4 is an infrared distance measurement sensor showing another example of a distance measurement sensor used in the lighting device for an automobile sun visor according to the present invention, wherein (a) is a front view, (b) is a bottom view, and (c) is a bottom view. It is a right view of (a).

9 is an illumination device for an automobile sun visor, which comprises a sun visor 10, a support member 11 that rotatably supports the sun visor 10, and a mirror 12 mounted on the inner surface of the sun visor 10. . The vehicle sun visor lighting device 9 is installed in a vehicle cabin, particularly in the vehicle ceiling 13 near the windshield of the driver's seat and passenger seat. The sun visor 10 is fixed to the vehicle ceiling 13 via a support member 11 so as to be freely opened and closed. When the sun visor 10 is opened, that is, when it is tilted downward, as shown in FIG. 1, it hangs down from the vehicle ceiling 13 and the mirror 12 provided in the sun visor 10 faces the front of the occupant's face. Reference numeral 10a denotes a mirror cover. When the sun visor 10 is used exclusively for the sun visor, its surface is closed to cover and protect the mirror 12. Further, if the sun visor 10 is flipped up to the vehicle ceiling 12 side and stored, dust, dirt and the like are prevented from adhering and accumulating on the surface of the mirror 12.

Reference numeral 14 denotes an illumination LED, and a plurality and a plurality of LEDs are installed in series on the outer peripheral edge of the mirror 12. The lighting LED 14 is, for example, a white LED. For example, a female occupant irradiates the face when applying makeup, so in consideration of color rendering, a small number of red and green LEDs are mixed in the whole. By doing so, light close to natural light may be generated.

Reference numeral 15 denotes a separation sensor, which is installed or built in the vicinity of the mirror 12 provided with the sun visor 10, for example. The separation sensor 15 includes a transmission unit 15a and a reception unit 15b, measures the distance between the position of the sun visor 10 and the face position of the occupant, and outputs distance data. As the separation sensor 15, various separation sensors depending on a separation method or a structure thereof can be used. For example, an ultrasonic separation sensor shown in FIG. 3 or an infrared separation sensor combining an infrared LDE and PSD, that is, a semiconductor position detection element, shown in FIG. 4 can be used. The separation sensor 15 includes a transmission unit 15a and a reception unit 15b for performing separation, and the ultrasonic separation sensor 15A illustrated in FIG. 3 includes an ultrasonic transmission device that functions as the transmission unit 15a. It has an ultrasonic receiver that functions as 15b. Here, the ultrasonic separation sensor 15A shown in FIG. 3 includes a ground terminal 15c, a power supply terminal 15d, and a signal terminal 15e. The signal terminal 15e is connected to the dimming control circuit 16A of the lighting unit 16 and is installed, for example, in the passenger seat. When the seated occupant approaches or separates the face of the mirror 12 of the sun visor 10, the ultrasonic separation sensor 15A as a separation sensor is operated, and this signal is output to the dimming control circuit 16A.

Next, in the lighting device for an automotive sun visor according to the present invention, the lighting LED equipped in the lighting device for the automotive sun visor according to the present invention is based on an electric circuit for operating the lighting LED shown in FIG. The lighting unit and its operation will be described.
Reference numeral 16 denotes an illumination unit, which is a unit configured by assembling electronic components on a base, for example, a dimming control circuit 16A, a PWM signal generating circuit 16B connected to the output side of the dimming control circuit 16A, The switching circuit 16C is connected to the output side of the PWM signal generation circuit 16B, and is constituted by a microcomputer. Reference numeral 14 denotes the illumination LED described above, which is connected to the output side of the illumination unit 16. Reference numeral 17 denotes a DC power supply, and the voltage is input to the illumination LED 14.

For example, specifically, when the face f of the occupant M shown in FIG. 3B is brought close to the mirror 12 of the sun visor 10 by about 10 to 15 (cm), the transmitter 15a and the receiver 15b of the ultrasonic separation sensor 15A are The ultrasonic distance measuring sensor 15A operates by detecting this proximity distance. Then, the output signal is introduced into the dimming control circuit 16A of the lighting unit 16. The dimming control circuit 16A determines the conduction angle set by the dimming control circuit 16A from the digital voltage signal, and the PWM signal generation circuit of the next stage is determined from the conduction angle according to the setting standard stored in the internal memory (ROM) in advance. The pulse width of the PWM signal output by 16B is determined, and the light control duty cycle is determined.

The PWM signal generation circuit 16B generates a PWM signal for controlling the energization time of the current supplied to the illumination LED 14 by pulse width modulation in accordance with a command from the dimming control circuit 16A. The PWM signal controls the energization time of the current supplied to the illumination LED 14 as a pulse signal having a duty cycle corresponding to the conduction angle, that is, an illumination signal. Thereby, the illuminance of the illumination LED 14 is controlled according to the dimming setting. Then, the signal output from the PWM signal generation circuit 16B switches ON / OFF of the current supplied to the illumination LED 14 by the switching circuit 16C. Thus, if the face f of the occupant M is close to the mirror 12 of the sun visor 10, the waveform of the PWM signal output from the PWM signal generation circuit 16B becomes “high value”, the time becomes longer, and the illuminance of the LED 14 for illumination becomes higher. The face f is brightly illuminated.
If the face f of the occupant M moves away from the mirror 12 of the sun visor 10, the time during which the waveform of the PWM signal output from the PWM signal generation circuit 16B becomes “high value” is shortened, and the illuminance of the LED 14 for illumination decreases and the occupant M The face f is illuminated darkly or turned off. Since it did in this way, according to the passenger | crew's utilization degree, the illumination intensity which lighted LED14 light-emitted was changed, the characteristic that the driving | operation function of a driver was ensured while aiming at rational utilization of illumination energy was acquired.
Note that the present application in which the ultrasonic separation sensor 15A is used as the separation sensor 15 described above is not limited thereto, and for example, a small package proximity sensor in which a light emitting element and an optical IC chip are integrally formed by a resin mold may be used. Further, it may be a proximity sensor equipped with an illuminance sensor function having a monitor display off function and a backlight dimmer using the illuminance sensor when a human body is detected by the proximity sensor. Further, it may be an IC type small distance measuring sensor in which the lens and the light receiving element are miniaturized to shorten the distance between them. Furthermore, a semiconductor position detecting element that can detect the position of the spot-like light can also be used.

4 shows an infrared separation sensor 15B as the separation sensor 15, (a) is a front view, (b) is a right side view, and (c) is a bottom view.
The infrared separation sensor 15B is a triangulation method using an infrared LED and a semiconductor position detection element, and is characterized in that an LED driving circuit and a semiconductor position detection element signal processing circuit are built in the main body 15f, and the occupant's face An analog voltage corresponding to the distance between f and the mirror 12 of the sun visor 10 can be output. In FIG. 4, 15g is a light emitting part, and 15h is a light receiving part. A connector 15i is integrally formed with the main body 15f, and includes an output terminal 15j, a ground terminal 15k, and a power supply voltage terminal 15m. When the infrared separation sensor 15B is applied to the separation sensor 15 of FIG. 2, the operation and the like are substantially the same as those described above, and the description thereof is omitted.

The present invention is used for light control of interior lighting in an automobile, and can be applied to a map light of a glove box in addition to a sun visor.

9 Automotive Sun Visor Lighting Device 10 Sun Visor 10a Mirror Cover 11 Strut Member 12 Mirror 13 Vehicle Ceiling 14 LED for Lighting
DESCRIPTION OF SYMBOLS 15 Measurement sensor 15A Ultrasonic measurement sensor 15B Infrared measurement sensor transmission part 15a Ultrasonic measurement sensor reception part 15b Ultrasonic measurement sensor 15c Ultrasonic measurement sensor earth terminal 15d Ultrasonic measurement sensor power supply Terminal
15e Signal terminal 15f of ultrasonic separation sensor 15f Main body 15g of infrared measurement sensor Light emitting part 15h of infrared measurement sensor Light receiving part 15i of infrared measurement sensor Connector 15j of infrared measurement sensor Output terminal 15k of infrared measurement sensor Infrared measurement Ground sensor terminal 15m Power supply voltage terminal 16 for infrared distance sensor Illumination unit 16A Dimming control circuit 16B for illumination unit PWM signal generation circuit 16C for illumination unit Switching circuit 17 for illumination unit DC power supply M Crew occupant f Crew face

Claims (1)

In a configuration comprising a sun visor, a support member that rotatably supports the sun visor, and a mirror provided in the sun visor, a plurality of illuminations arranged in series on the outer periphery of the mirror The distance between the LED for use in the vehicle and the position of the sun visor, which is disposed in the vicinity of the mirror, and the position of the sun visor is measured, and the illumination unit built in the sun visor is driven to derive an illumination signal to the LED for illumination An illuminating device for an automobile sun visor, comprising: a separation sensor.

Images