JPH0238517Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a motorcycle radio wave receiver that is attached to a motorcycle and is capable of receiving radio waves transmitted from the outside.

[Summary of the idea]

This invention measures the speed of a motorcycle by emitting radio waves (for example, 10.525 GHz radio waves) toward the motorcycle from the front side in the direction of travel of the object to be measured, and measuring the reflected waves of the radio waves. The present invention relates to a motorcycle radio wave receiver for receiving the radio waves so that the driver of the motorcycle, which is the object to be measured, can confirm whether or not the radio waves are correctly reflected by the motorcycle during measurement.

[Conventional technology]

2. Description of the Related Art Conventionally, there have been radio wave receivers for automobiles that receive radio waves emitted from outside the automobile, for example, radio waves emitted from the front in the direction of travel of the automobile, within the automobile. When this radio wave receiver receives a radio wave, it produces an alarm sound, etc., or lights up a light emitting diode, etc., so that the driver can confirm that the radio wave has been received.

[Problem that the invention attempts to solve]

By the way, there is a desire to use the above-mentioned radio wave receiver on a motorcycle. However, unlike inside a car, motorcycles make a lot of noise while running, and since the driver wears a helmet, it is almost impossible to hear alarm sounds and the like when radio waves are received. Note that it is not desirable from a safety standpoint to listen to alarm sounds by wearing earphones or the like inside a helmet. Furthermore, by attaching a car radio receiver to a dash board or the like in the car interior, the radio receiver can be placed within the main range of the driver's forward field of vision.However, on motorcycles, the radio receiver is attached to the steering wheel, etc. The receiver will be placed around the bottom of the driver's forward field of vision. Moreover, motorcycles vibrate more violently than cars. For this reason, simply using a lighting display such as a light emitting diode has the problem that it is difficult for the driver to reliably recognize the lighting.

Therefore, when using this type of radio wave receiver on a motorcycle, it is difficult for the driver to instantly and reliably confirm the reception of radio waves, making it difficult to put the radio wave receiver for motorcycles into practical use.

Therefore, the present invention aims to provide a radio wave receiver for a motorcycle that allows the driver to instantly and reliably confirm the reception of radio waves.

[Means for solving problems]

The radio wave receiving unit in the case includes a case attached to a handlebar of a motorcycle, and a reception display unit configured with a radio wave receiving unit, a receiving circuit, and a strobe that emits a flash, housed in the case. is disposed on the handlebar facing forward, and the case is provided with a transparent window that allows flash light emitted from the strobe in the case to be emitted to the rear and upper side of the handlebar outside the case, When the radio wave receiving unit receives a radio wave transmitted toward the motorcycle from the front side of the motorcycle, a flash is emitted from the strobe via the receiving circuit, and the flash is transmitted through the transparent window to the outside of the case. This radio wave receiver for a motorcycle is configured to emit light to the rear and upper side of a handlebar so that the driver of the motorcycle can recognize it.

[Effect]

According to the invention, the radio receiver mounted on the handlebar of the motorcycle by the case is placed within the driver's forward field of vision. When the radio wave reception unit receives radio waves transmitted toward the motorcycle from the front side in the direction of travel of the motorcycle, the strobe emits a flash of intense light, and the flash passes through the transparent window of the case and is transmitted to the handlebars outside the case. Since the radio waves are emitted toward the rear and upper side of the motorcycle driver, the driver can instantly and reliably recognize the reception of the radio waves by the flash of the strobe light.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

First, as shown in Figs. 1 and 2, the case 1 of the radio wave receiver is formed into a substantially rectangular parallelepiped shape from synthetic resin, etc., and an upper cover 3 is fitted onto a lower base 2, and a plurality of setscrews are attached to the case 1. It is combined by . A printed circuit board 5 is fixed on the lower base 2, and on this printed circuit board 5 there is a radio wave receiving section 6, which is a receiving antenna, and a receiving circuit section 7, which is made up of various electronic components.
and a reception display section 8 are provided.

Next, the radio wave receiving section 6 has a reception opening 10 opened forward at its center, and the front end of the opening 10 is widened in the vertical and horizontal directions. Further, the reception display section 8 is composed of a strobe (discharge tube) 12 that emits flash light, and this strobe 12 is located at the rear end side of the case 1 and is approximately parallel to the printed circuit board 5.
It is mounted horizontally on a printed circuit board 13 fixed at an angle of 45 degrees. Also, the printed circuit board 1
3 is provided with a pilot lamp 14 made of a green light emitting diode and a reception indicator lamp 15 made of a red light emitting diode. A slope 17 inclined at approximately 45 degrees is formed at the rear corner of the upper cover 3 in correspondence with the strobe 12 and both lamps 14 and 15, and a transparent window 18 made of transparent acrylic material or the like is formed on this slope 17. is embedded.
Note that the transparent window 18 has an outer surface protruding in a triangular shape, and a mesh-like groove is provided on the inner surface, so that light from the inside can be easily diffused to the outside. Note that the first
In the figure, reference numeral 20 denotes a receiving sensitivity adjustment volume which also serves as a power switch, and in FIG.

Next, the receiving circuit section 7 will be explained. That is, as shown in FIG. 3, the radio waves at the frequency received by the radio wave receiving unit 6, which is a receiving antenna, are transmitted from the pulse generation circuit 23 to the pulse amplification circuit 24, and are oscillated by the local oscillator 25 at a frequency of ₀ . It is mixed with the pulse by the mixer 26, and the difference between the pulses and the received signal becomes a reception frequency of ₀ to . This is a so-called superheterodyne configuration. The signal then passes through the intermediate frequency amplification circuit 27, the detection circuit 28, and the low frequency signal amplification circuit 29, and reaches the signal control circuit 30. The signal control circuit 30 causes the reception indicator lamp 15 to be lit. At the same time, the signal from the signal control circuit 30 reaches the strobe circuit 31, and the strobe circuit 31 causes the strobe 12 to emit light periodically at a light emission cycle of 8 to 9 times per second.

The case 1 of the radio wave receiver configured as described above is mounted on the handlebar 34 of a motorcycle 33 as shown in FIG. When the front end of the case 1 is faced in the direction of travel of the motorcycle (direction of arrow a), the slope 17 on the rear end of the case 1 is directed approximately toward the driver's face (direction of arrow b). Then, when a radio wave is transmitted toward the motorcycle from the front side in the direction of travel of the motorcycle, this is received by the radio wave receiving section 6 as described above, and is transmitted via the receiving circuit section 7 to the strobe 12 of the reception display section 8. is periodically emitted with bluish-white light. The flash light from the strobe 12 is emitted from the transparent window 18 of the case 1 in the direction of arrow b toward the rear and upper side of the handlebar 34, which is within the field of view of the motorcycle driver. Therefore, the driver can instantly and reliably confirm the flash of the strobe 12, and the driver can confirm that the radio wave receiver has received the radio waves transmitted toward the motorcycle from the front side in the direction of travel of the motorcycle. The person can be instantly and reliably confirmed by the flash of the strobe light 12.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various effective changes can be made based on the technical idea of the present invention.

[Effect of idea]

In this invention, the reception of radio waves is indicated by the periodic flashing of a strobe light, so unlike in the interior of a car, there is a lot of noise while driving, and if you wear a helmet, you can't hear alarm sounds, etc. Even on motorcycles that cannot receive signals, drivers can instantly check whether they are receiving radio waves. Furthermore, the flash from a strobe is much more intense than the light from a light emitting diode, etc., so even if the radio receiver is placed near the bottom of the driver's front field of vision and the motorcycle is subject to strong vibrations, the driver cannot Strobe flashes can be reliably recognized. Therefore, it is possible to put into practical use a radio wave receiver for motorcycles, which has been difficult to put into practical use in the past because it is difficult for the driver to confirm the reception of radio waves.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is an exploded perspective view, FIG. 2 is a sectional view, FIG. 3 is a circuit block diagram, and FIG. 4 is a schematic diagram of the device in use. In addition, in the symbols used in the drawings, 1...case, 6...radio wave receiving section, 7...receiving circuit section, 8...
. . . reception display section, 12 . . . strobe, 18 . . . transparent window.

Claims (1)

[Claims for Utility Model Registration] A case mounted on the handlebar of a motorcycle, and a reception display section that includes a radio wave reception section, a reception circuit, and a strobe that emits a flash, housed in the case, The radio wave receiving section in the case is arranged to face the front side of the handle, and the case includes a transparent window that emits flash light emitted from the strobe in the case to the rear and upper side of the handle outside the case. and when the radio wave receiver receives a radio wave transmitted toward the motorcycle from the front side in the direction of travel of the motorcycle, the flash light is emitted from the strobe via the receiving circuit, and the flash light is transmitted to the flash light. A radio wave receiver for a motorcycle configured to emit light from a transparent window to the rear and upper side of the handlebar outside the case so as to be recognized by a driver of the motorcycle.