JPH04362613A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To prevent increase in wiring at the periphery of handlebars when the liquid crystal display device is mounted on a motorcycle or ship by putting a display part and a connection part in individual housings respectively and connecting them by a connection cord. CONSTITUTION:The liquid crystal display device consists of the display part 13 which is installed in front of the handlebars 8 and a control part 15 which is installed below a seat 10 and connected to the display part 13 by the connection cord 14. A display unit is incorporated in the display part 13, which is supported by a cowling through metal fittings. Further, a control unit with a microcomputer is incorporated in the control part 15. The display part 13 wherein the liquid crystal display unit is incorporated and the control part 15 wherein the control unit for the liquid crystal display unit is incorporated are put in the individual housings respectively and connected mutually by the connection cord 14. Consequently, only the connection cord 14 which connects the display part 13 and control part 15 is wired at the periphery of the handlebars for the liquid crystal display device 12.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device for displaying the speed and engine rotational speed of motorcycles, motorboats, etc.

0002

BACKGROUND OF THE INVENTION Conventionally, a liquid crystal display device installed on a motorcycle has a structure in which vehicle speed and engine speed are displayed on a liquid crystal display unit, and the liquid crystal display unit is housed in a meter case in front of the handlebar. In addition to the liquid crystal display unit mentioned above, this meter case also houses a control unit that controls the liquid crystal display unit, and is connected to the power cord from the battery, signal cord from the speed sensor, engine rotation speed sensor, etc. Ta.

0003

[Problems to be Solved by the Invention] However, when a liquid crystal display device as described above, which houses a liquid crystal display unit and a control unit in one meter case, is used in a motorcycle, there is a problem that the main switch cord and ,
Since cords for headlights, turn signals, etc. are also wired, there are many cords that pass through the handlebars.
Assemblability and maintainability deteriorate.

0004

[Means for Solving the Problems] A liquid crystal display device according to the present invention includes a display section containing a liquid crystal display unit, and a control section containing a control unit for the liquid crystal display unit, wherein the display section and the control section are connected to each other. are housed in separate housings and connected by connecting cords.

[0005]

[Operation] The cord wired around the handle of the liquid crystal display device is the connection cord 1 that connects the display section and the control section.
There will only be books.

[0006]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 13.
This will be explained in detail by FIG. 1 is a side view of a motorcycle equipped with a liquid crystal display device according to the present invention, FIG. 2 is a front view showing the display section of the liquid crystal display device according to the present invention, and FIG. 3 is a line III-III of the upper case in FIG. 2. Cross-sectional view, Figure 4 is Figure 2
It is a sectional view taken along the line IV-IV in FIG. FIG. 5 is a rear view of the display section of the liquid crystal display device according to the present invention, FIG. 6 is a side view thereof, and FIGS. 5 and 6 show a state in which the display section is attached to a handle section using a mounting bracket. FIG. 7 is a plan view showing a control section of a liquid crystal display device according to the present invention, and FIG. 8 is a partially cutaway side view showing the control section. Note that the broken portion in FIG. 8 shows a cross section taken along the line VIII-VIII in FIG. FIG. 9 is a front view of a display unit used in a liquid crystal display device according to the present invention, FIG. 10 is a plan view of the display unit, and FIG.
is a rear view of the display unit. FIG. 12 is a partially cutaway side view of the display unit, and the broken portion in this figure shows a cross section taken along the line XII-XII in FIG. FIG. 13 is an enlarged cross-sectional view of a part of the display unit. In these figures, 1 is an off-road motorcycle, 2 is a frame of this motorcycle 1, 3 is an engine, and 4 is a part of the frame 2 via a front fork 5.
A front wheel 6 is steerably connected to the rear wheel 6, and a rear wheel 6 is swingably supported by the frame 2 via a rear arm 7. 8 is a handle, 9 is a fuel tank, and 10 is a seat. Note that 11 is a cowling structured to cover the front part of the vehicle body.

Reference numeral 12 denotes a liquid crystal display device according to the present invention. The control section 15 is connected to the control section 15 via the control section 15. The display section 12 incorporates a display unit, which will be described later, and is supported by the cowling 11 via mounting fittings, which will be described later. Further, the control unit 15 is connected to a battery 16 located below the seat via a power cord 17, and to a sensor 18 that detects the rotation speed of the output shaft of the engine 3 via a sensor cord 19. There is. Furthermore, this control section 15 has a built-in control unit having a microcomputer (not shown), and is configured to calculate the traveling distance and vehicle speed from the output value of the sensor 18 and display it on the display unit of the display section 13. has been done.

As shown in FIGS. 2 to 6, the display unit 13 is constructed such that a display unit 23 is held in an upright state within a resin case that is divided into an upper and lower part and is made up of a lower case 21 and an upper case 22. has been done. The lower case 21 is made of opaque synthetic resin and is integrally molded into a rectangular tube shape with a bottom that opens upward. The inner wall of the lower case 21 is provided with a groove 21a that fits and supports the lower outer edge of the display unit 23, as shown in FIG. The display unit 23
By fitting into 1a, it is supported in an upright state on the lower case 21. Also, this lower case 2
Concave curved surfaces 21b are provided on the bottom surface and both left and right side surfaces of 1 so as to engage with mounting fittings to be described later.

[0009] The upper case 22 is integrally molded from transparent synthetic resin in the shape of a box lid that opens downward, and the lower opening fits into the opening of the lower case 21 to close the lower case. 21. The outer surface of this upper case 22 is painted black in this embodiment. The painting area includes the left and right side walls, the upper wall, the rear wall, and a part of the front of the upper case 22, except for the parts corresponding to the display surface of the display unit 23 housed in the upper case 22. has been done. Note that the edge of the painted portion on the front surface of the upper case is indicated by a broken line A in FIG. The joint structure between the lower case 21 and the upper case 22 is such that a protrusion having a thickness of approximately half of that part is provided in series on the opening edge of the lower case 21 over the entire circumference of the opening, and this protrusion is connected to the upper case 22. The structure is such that it is inserted inside and fixed with adhesive. This makes it difficult for water to enter through the mating surfaces of both the upper and lower cases. Further, the inner wall of the upper case 22 is also provided with a groove 22a that fits and supports the outer edge of the display unit 23, as shown in FIG. In this embodiment, the groove 22a is provided in series on the left and right side walls and the upper wall of the upper case 22. That is,
By attaching the upper case 22 onto the lower case 21, the display unit 23 supported in an upright state on the lower case 21 is fixed within the case by fitting its outer edge into the groove 22a. . Furthermore, the upper case 22 is also provided with concave curved surfaces 22b on both left and right side surfaces and on the upper surface, with which mounting fittings to be described later engage.

The display unit 23 is shown in FIGS.
As shown in FIG. 13, the substrate 24 supported by the upper and lower cases 21 and 22 and the back surface of the liquid crystal display unit 25 are
It is composed of a liquid crystal display unit assembly formed by closely fitting an L unit 26, and is assembled by connecting the liquid crystal display unit 25 to a substrate 24 via a connector 27. The liquid crystal display unit assembly includes a liquid crystal display unit 25.
Attach the EL unit 26 to the sheet metal holding plate 28 and holder 29.
They are assembled in close contact with each other. That is, in order to assemble the liquid crystal display unit assembly, a frame-shaped sheet metal holding plate 28 surrounding the outer periphery of the liquid crystal display unit 25 is brought into contact with the display surface side of the liquid crystal display unit 25, and
Holder 2 is installed on the back side of the EL unit 26 (board 24 side).
9, and the locking claws 29a of the holder 29 are locked to the holding plate 28 so that the EL unit 26 is brought into contact with the back surface of the liquid crystal display unit 25. The holder 29 has six claw pieces 29a, two on the top and two on the left and right sides. Note that 30 is a cushion rubber, which is interposed between the surface of the liquid crystal display unit 25 and the sheet metal holding plate 28.

The liquid crystal display unit assembly assembled as described above is attached to the substrate 24 with the holder 29 located on the back side of the EL unit 26 facing the surface of the substrate 24. To fix the liquid crystal display unit assembly to the substrate 24, a locking piece 28a protruding from the side of the sheet metal holding plate 28 is passed through the through hole 24a of the substrate 24, and the substrate 24 is fixed as shown in FIG. Do this by folding it on the back side. In this case, the electrode portion 25a provided at the bottom of the liquid crystal display unit 25 is electrically connected to the electrode of the substrate 24 via the connector 27. As shown in FIG. 9, a plurality of electrodes 25b are arranged in parallel on this electrode portion 25a. The connector 27 is made of rubber, and has a conductive material embedded therein so as to be electrically conductive only in the thickness direction of the electrode portion 25a. In FIG. 9, reference numeral 26a indicates an electrode of the EL unit 26, and this electrode 26a is provided to protrude laterally from the side of the EL unit 26, and after the liquid crystal display unit assembly is attached to the substrate 24, 2
4 by soldering. By directing the electrode 26a of the EL unit 26 in a direction 90 degrees different from that of the electrode portion 25a of the liquid crystal display unit 25 in this manner, concentration of circuits on the same side of the substrate 24 can be avoided.

Reference numeral 31 denotes a dial plate, and in this embodiment, the dial plate 31 is formed by molding a black colored synthetic resin sheet into a square shape when viewed from the front, and is attached to the outside of the upper case 22 with adhesive. affixed to the surface. Also, this dial 3
The width of the opening at the center of 1 is such that the entire display surface of the liquid crystal display unit 25 is exposed through the upper case. 3
Reference numeral 2 denotes a semi-transparent portion provided on the dial 31, and this semi-transparent portion 32 is formed in the shape of a letter so as to display a trademark or the like. By providing the translucent portion 32 on the opaque dial 31 in this manner, when the EL unit 26 is turned on, light leaks from the translucent portion 32 and the characters indicated by the translucent portion 32 are displayed brightly. .

Reference numeral 33 denotes a water drain hole, and the water drain hole 33 is formed vertically so as to pass through the bottom of the lower case 21. Note that the connection cord 14 that connects the display section 13 and the control section 15 is connected to the lower case 2 in parallel with this drain hole 33.
1 and is connected to the substrate 24. In addition,
Reference numeral 34 in FIG. 2 indicates characters displayed on the display surface of the liquid crystal display unit 25.

35 is the display unit 1 configured as described above.
3 to the cowling 11. As shown in FIGS. 5 and 6, this mounting bracket 35 includes a round bar 35a that supports the display section 13 and a
and mounting plates 35b provided at both ends. The round bar 35a is bent along the outer periphery of the display section 13, and the concave curved surface 21 of the lower case 21
b and the concave curved surface 22b of the upper case 22 to hold the display section 13.

As shown in FIGS. 7 and 8, the control section 15 includes a lower case 37 on which a mounting plate 36 is integrally molded.
, a lid 38 fixed on the lower case 37 , and a substrate 39 housed and fixed within the lower case 37 . Note that although a control unit including a microcomputer is mounted on the board 39, it is omitted in FIG.

Therefore, in the liquid crystal display device 12 configured with the display section 13 located at the handle section and the control section 15 located below the seat, the power cord 17 and sensor cord 19 are wired below the seat. The only cord wired around the handle 8 in the liquid crystal display device 12 is the connection cord 14 that connects the display section 13 and the control section 15.

Further, as shown in this embodiment, when the liquid crystal display unit assembly is fixed to the substrate 24 by bending the locking piece 28a of the sheet metal holding plate 28 on the back side of the substrate 24, the fastening screws can be fixed. Since it can be assembled without using any tools, etc., it is easy to assemble and is economical. Furthermore, the display unit 23 is attached to the lower case 21 and the upper case 22.
By fitting the substrate 24 into the grooves 21a and 22a when fixing the display unit 23 inside the case, the display unit 23 can be fixed inside the case without using fixing screws or the like, and assembly is simple. Moreover, since the side portions of the display unit 23 can be brought close to the inner surface of the case by eliminating the need for fixing screws, the display section 13 can be made smaller.

In the above embodiment, an example was shown in which the liquid crystal display device 12 of the present invention was mounted on a motorcycle 1, but the liquid crystal display device 12 of the present invention can also be mounted on a motor boat as shown in FIG. can. FIG. 14 is a sectional view showing another embodiment in which a liquid crystal display device according to the present invention is mounted on a motor boat. In the figure, the same or equivalent members as those explained in FIGS. 1 to 13 are given the same reference numerals and detailed explanations will be omitted. In FIG. 14, 4
1 is a motor boat, and this motor boat 41 is provided with two cabs 42, one above the other. 43 is a handle provided in each driver's cab, and 44 is a seat. A display section 13 of the liquid crystal display device 12 is installed in each driver's cab 42, respectively. These display sections 13 are connected via connection cords 14 to a control section 15 installed on a lower driver's cab 42, and are erected on a meter panel 45 using mounting fittings (not shown). Note that the control unit 15 is arranged inside the meter panel 45 of the driver's cab 42. Even if the liquid crystal display device 12 is attached to the motor boat 41 in this manner, the same effect as in the above embodiment can be obtained.

Furthermore, in each of the embodiments described above, the display section 13
The mounting bracket is used to attach the support body (cowling 11 for motorcycle 1, meter panel 45 for motor boat 41).
), the present invention is not limited to such limitations, and the display section 13 can also be fixed by attaching its back surface to a support.

[0020]

As described above, the liquid crystal display device according to the present invention includes a display section incorporating a liquid crystal display unit and a control section incorporating a control unit for the liquid crystal display unit, and the display section and the control section Since these are housed in separate housings and connected by connection cords, there is only one cord to be wired around the handle of the liquid crystal display device, which connects the display section and the control section. Therefore, the number of cords wired around the handle can be reduced, and ease of assembly and maintenance can be improved. Further, by arranging the control section under the seat of a motorcycle or in the meter panel of a motor boat, the control section is less likely to be exposed to water, so the waterproof structure of the control section itself can be simplified. Furthermore, it is easy to connect a plurality of display units to one control unit. In addition, since the connection cord connecting the display section and the control section only transmits the signal for controlling the display section, an inexpensive multicore wire can be used.

[Brief explanation of drawings]

FIG. 1 is a side view of a motorcycle equipped with a liquid crystal display device according to the present invention.

FIG. 2 is a front view showing the display section of the liquid crystal display device according to the present invention.

FIG. 3 is a sectional view taken along line III-III of the upper case in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a rear view of the display section of the liquid crystal display device according to the present invention.

FIG. 6 is a side view of the display section of the liquid crystal display device according to the present invention.

FIG. 7 is a plan view showing a control section of the liquid crystal display device according to the present invention.

FIG. 8 is a partially cutaway side view of the control section of the liquid crystal display device according to the present invention.

FIG. 9 is a front view of a display unit used in the liquid crystal display device according to the present invention.

FIG. 10 is a plan view of a display unit used in a liquid crystal display device according to the present invention.

FIG. 11 is a rear view of a display unit used in a liquid crystal display device according to the present invention.

FIG. 12 is a partially cutaway side view of the display unit used in the liquid crystal display device according to the present invention.

FIG. 13 is an enlarged cross-sectional view of a part of the display unit used in the liquid crystal display device according to the present invention.

FIG. 14 is a sectional view showing another embodiment in which a liquid crystal display device according to the present invention is mounted on a motor boat.

[Explanation of symbols]

12 Liquid crystal display device 13 Display section 14 Connection code 15 Control section 21 Lower case 22 Upper case 23 Display unit 25 Liquid crystal display unit 37 Lower case 38 Lid body

Claims (1)

[Claims] 1. A display section having a built-in liquid crystal display unit and a control section having a built-in control unit for the liquid crystal display unit, wherein the display section and the control section are housed in separate casings, and a connecting cord is provided. A liquid crystal display device characterized in that it is connected by.