JP5403364B2 - Instrument device - Google Patents

Description

  The present invention relates to an instrument device mounted on, for example, an automobile, a motorcycle, a construction machine, an agricultural machine, a ship, a snow bike, a water bike, and the like.

  As a conventional instrument device, for example, those disclosed in Patent Document 1 and Patent Document 2 are known. This instrument device is a circuit board on which an indicator instrument provided with a display board on the front side and a drive circuit for driving the indicator instrument are mounted, and a connector is provided for electrical routing to the outside. And a lower case that houses the circuit board and the indicating instrument, and an upper case that is disposed in a front opening of the lower case and includes a see-through transparent panel that covers the indicating instrument in a sealed state. Has been. At this time, in the instrument device that is easily exposed to the outside air, for example, as a means for suppressing the fogging phenomenon of the see-through panel of the upper case, it is provided in the lower case and is configured by the upper case and the lower case. A ventilation portion having a ventilation hole that communicates the inside of the space with the outside air side is provided. Further, for example, in order to electrically connect a power source side such as a vehicle and an instrument device, an opening is provided in a lower case facing the connector provided on the circuit board, and the opening is provided through the opening. An external connection connector that is electrically connected to the connector and the power supply side is provided. At this time, the connector for external connection is covered with a waterproof cover in order to prevent entry of water or the like from the outside.

JP-A-8-219817 JP 2007-85786 A

  In the instrument device described in the above-mentioned Patent Document 1, Patent Document 2, etc., the upper case is formed by being electrically routed to an external power supply side via an external connection connector and made of a perspective panel. The clouding phenomenon of the inner surface portion of the see-through panel of the upper case is established by communicating the inside of the storage space constituted by the lower case and the outside air side of the case through a ventilation portion having a ventilation hole provided in the lower case. Can be suppressed.

  By the way, in recent years, in addition to reducing the cost of the instrument device itself, the current situation is that the instrument device is made compact and small and light. In consideration of this point, when the upper and lower cases covering the indicator instrument are made thin and the size is aimed at miniaturization, if the volume in the instrument case is small, the amount of heat per unit volume increases, for example, a circuit The heat generated by the heat generating electronic components mounted on the board or the light source for lighting is easily trapped in the case, and when the outside air is cold and the temperature inside the case is high, the moisture inside the case will cause the fluoroscopic panel. The phenomenon that the inner surface of the glass becomes cloudy may appear prominently. To avoid this point, simply increasing the volume of the case has the problem that the space on the main body side for mounting and fixing the case cannot be secured. May not be possible.

  Also, the external connection connector connected to the wiring cord which is a wiring member for connecting to the power supply side is fitted into the connector on the circuit board provided on the inner side of the case through the opening provided in the lower case. When an electrical connection is attempted, as described in, for example, Patent Document 1, an elastic member is used to maintain waterproofness between the external connection connector connected to the wiring cord and the opening of the case. The waterproof cover is configured to cover the opening and cover the external connection connector to keep it watertight.

  For this reason, when fitting the waterproof cover along the opening along with the external connection connector while assembling it with the location of the opening provided in the lower case, the waterproof cover should be fitted into the opening of the case and held securely. Further, there is a problem that it is difficult to set because it is difficult to see the assembly position (unevenness fitting portion) between the connector hidden by the waterproof cover and the connector for external connection with respect to the opening.

  Therefore, the present invention pays attention to the above-mentioned problems, and obtains a sufficient anti-fogging effect while keeping the case of the instrument device relatively small, and at the same time, the external connection connector is easily assembled and fixed to the connector in the case. An object of the present invention is to provide an instrument device that can perform the above.

Since the present invention is to solve the problems described above, in claim 1, and a finger示計unit, a drive circuit for driving the indicating instrument is mounted, a connector is provided for electrically routed formed to the outside a circuit board, and the lower case for accommodating the this circuit board the indicating instrument, and an upper case made of see-through perspective panels will be arranged in the front opening covering the indicating instrument of the lower case, wherein A vent portion provided in a lower case and having a vent hole communicating the inside of the storage space constituted by the upper case and the lower case and the outside air side, and an opening portion provided in the lower case facing the connector And an external connection connector connected to the connector via the opening, and a wiring member connected to the external connection connector and routed to the outside of the case. A metering device comprising a bulging portion that projects and can guide the external connection connector on the periphery of the opening, and the ventilation portion is provided at the bulging portion. Device.

  With this configuration, the external connection connector is positioned and guided along the bulging portion provided in the lower case with respect to the connector mounted on the circuit board through the opening provided in the lower case. As well as being able to be assembled and fixed easily, it is possible to increase the volume of the instrument device consisting of the upper and lower cases by means of the bulging part, thereby suppressing the temperature rise per unit volume compared to the conventional case. Thus, the occurrence of the clouding phenomenon can be suppressed as compared with the conventional case.

  According to a second aspect of the present invention, in the instrument device according to the first aspect, the lower case is provided with a cylindrical portion toward the outside of the lower case along the periphery of the opening, and the cylindrical portion is surrounded by the cylindrical portion. And the waterproof connector cover which covers the said connector for external connection is provided, It is characterized by the above-mentioned.

  With this configuration, it is possible to prevent water and dust from directly entering from the outside.

  According to a third aspect of the present invention, in the instrument device according to the first aspect of the present invention, a barrier portion protrudes integrally from the inner wall portion of the vent hole.

  With this configuration, the inner wall portion of the cylindrical holding portion can be communicated in a maze shape by the barrier portion while maintaining the air permeability of the vent hole, thereby allowing water and dust to directly enter from the outside of the case. Can be prevented in advance.

In the instrument apparatus of the present invention, a finger示計unit, a driving circuit for driving the indicating instrument is mounted, and a circuit board connector for electrically routed formed is provided to the outside, the circuit board wherein the lower case for accommodating the indicating instrument, and an upper case made of see-through perspective panels will be arranged in the front opening covering the indicating instrument of the lower case, the upper is provided on the lower case and A ventilation portion having a ventilation hole communicating the inside of the storage space constituted by the case and the lower case and the outside air side, an opening provided in the lower case facing the connector, and through the opening In an instrument device comprising: an external connection connector connected to the connector; and a wiring member connected to the external connection connector and routed to the outside of the case Since the bulging part which positions and guides the connector for external connection is provided on the periphery of the opening part, and the ventilation part is provided at the bulging part part, the instrument device is characterized in that The connector for external connection is positioned along the bulging portion provided in the lower case with respect to the connector mounted on the circuit board through the opening provided in the lower case, and can be easily assembled and fixed while being guided. In addition, it is possible to increase the volume of the instrument device consisting of the upper and lower cases by the bulging part, which can suppress the temperature rise per unit volume compared to the conventional case, and the occurrence of fogging phenomenon It can suppress compared with.

FIG. 1 is a front view showing an instrument device according to a first embodiment of the present invention. FIG. 2 is a rear view showing the instrument device of FIG. FIG. 3 is a cross-sectional view taken along line AA showing a state before the instrument device and the connector member of FIG. 1 are assembled. FIG. 4 is a cross-sectional view showing a state where the connector member of FIG. 3 is set.

  FIG. 1 and FIG. 2 show a first embodiment of the present invention, and the case where the embodiment of the present invention is applied to an instrument device mounted on, for example, a motorcycle will be described based on these.

  In the figure, in the instrument device according to the present embodiment, an indicator instrument D which is a display device including a speedometer in the center, and an indicator instrument D which is a display device including a fuel gauge on the left side and a water temperature meter on the right side are arranged. Each of the indicating instruments D is assembled and fixed in the case 1 (inside the storage space S composed of the upper case 11 and the lower case 12) which is an exterior member.

  In this case, in the indicator instrument D which is each indicator for displaying various information such as a speedometer, a fuel gauge, and a water temperature gauge, a circuit board made of a hard material behind the middle case 2 made of a synthetic resin frame. 3 is assembled and fixed, and an instrument main body 4 constituting a part of each indicating instrument D is assembled and fixed to the back side of the circuit board 3, and the tip of a pointer shaft provided in each instrument main body 4 is fixed. On the side, the pointers 5 that rotate around the pointer shaft are press-fitted and fixed.

  On the front side of the middle case 2 located behind the pointer 5, a display board 6 provided with a display portion 6a made of scales, numbers, symbols, and the like is disposed.

  An electronic component B, which is a driving means for driving the indicator instrument D, is mounted on the circuit board 3, and an instrument for transmitting and illuminating the display section 6a of the display board 6 on the circuit board 3. A light source 7 (LED) for illumination is assembled.

  On the back side of the circuit board 3, a connector C <b> 1 is provided to be electrically routed to the outside through an opening 120 provided in the lower case 12.

  The external connection connector C2 connected to the connector C1 mounted on the back side of the circuit board 3 is connected to a wiring cord 8 which is a wiring member electrically connected to the battery side which is the power source side of the motorcycle. And a waterproof connector cover made of an elastic member for covering the connector for external connection C2 while keeping watertight between the wiring member (wiring cord 8) and the opening 120 provided in the lower case 12. 9 is provided. In this case, in order to maintain waterproofness between the wiring cord 8 and the opening 120 of the case 12, the wiring cord 8 is inserted into the waterproof connector cover 9.

  Further, the case 1 in this embodiment includes an upper case 11 and a lower case 12, and the upper case 11 can visually recognize the display portion 6a region provided on the display board 6 and the indication state of the pointer 5. A transparent panel 111 made of a transparent synthetic resin material and an upper case body 112 made of an opaque synthetic resin are integrally formed at the peripheral portion of the transparent transparent panel 111 by molding.

  Further, the lower case 12 is provided with a substantially U-shaped bulging portion 121 projecting outward from the bottom of the lower case 12 so as to surround the periphery of the opening 120 described above, and A ventilation portion 122 having a cylindrical shape having a ventilation hole 122a for communicating outside air and inside air in the storage space S in the case 1 bulges from the bottom surface portion of the lower case 12 so that the panel 111 is not fogged. It is set and provided at the bottom portion of the part 121.

  In this embodiment, the barrier portion 122b is integrally formed at the inner wall portion of the vent hole 122a, and the barrier portion 122b keeps the air permeability of the vent hole 122a while the cylindrical portion is formed by the barrier portion 122b. The inner wall portion of the ventilation portion 122 is formed so as to communicate in a labyrinth, thereby preventing water and dust from directly entering from the outside of the case 1.

  Further, the lower case 12 is provided with a cylindrical portion 123 along the periphery of the opening 120 toward the outside of the lower case 12.

  As described above, according to the present embodiment, the indicator instrument D provided with the display board 6 on the front surface side and the drive circuit for driving the indicator instrument D are mounted and electrically routed to the outside to form. The circuit board 3 provided with the connector C1, the lower case 12 for housing the circuit board 3 and the indicator instrument D, and the indicator instrument D which is disposed in the front opening of the lower case 12 in a sealed state. An upper case 11 made of a see-through see-through panel 111, and a vent hole provided in the lower case 12 and connecting the inside S of the storage space constituted by the upper case 11 and the lower case 12 and the outside air side. A ventilation portion 122 having 122a, an opening 120 provided in the lower case 12 facing the connector C1, and an external connection connector connected to the connector C1 through the opening 120. In the instrument device comprising a cuter C2 and a wiring member 8 connected to the external connection connector C2 and routed to the outside of the case 1, the external connection connector is provided at the periphery of the opening 120. A bulging portion 121 that can position and guide C1 is provided so as to protrude, and the ventilation portion 122 is provided at the bulging portion 121, thereby providing a circuit board via an opening 120 provided in the lower case 12. 3 can be easily assembled and fixed while guiding the external connection connector C2 along the bulging portion 121 provided in the lower case 12 with respect to the connector C1 mounted on the upper and lower sides. It is possible to increase the volume of the instrument device comprising the side cases 11 and 12, thereby suppressing the temperature rise per unit volume compared to the conventional case. Can, the occurrence of fogging phenomenon can be suppressed compared with the conventional. At this time, convection is performed in the depth direction of the storage space S in the case 1 by the ventilation portion 122 provided in the bulging portion 121 and the ventilation portion 122 provided in the bottom portion of the lower case 12 other than the bulging portion 121. It is possible to enhance the ventilation effect as compared with the prior art.

  Further, in the present embodiment, the lower case 12 is provided with a cylindrical portion 123 along the periphery of the opening 120 toward the outside of the lower case 12, surrounding the cylindrical portion 123, and for the external connection By providing the waterproof connector cover 9 that covers the connector C2, water and dust can be prevented from directly entering from the outside.

  Further, in the present embodiment, the barrier 122b integrally protrudes from the inner wall portion of the vent hole 122a, so that the inner wall portion of the cylindrical vent portion 122 is mazed by the barrier portion 122b while maintaining the breathability of the vent hole 122a. In this way, water and dust can be prevented from entering directly from the outside of the case 1.

  The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the embodiment, the transparent panel 111 may be clouded in the case 1. The ventilation part 122 having a ventilation hole 122a that communicates the outside air with the inside air in the storage space S of the case 1 has a predetermined portion on the bottom surface of the lower case 12 and the bulging part 121 protruding from the bottom surface. A plurality of portions are provided on the bottom portion, but may be set as appropriate depending on the size and shape of the case 1 such as the number and arrangement position of the ventilation portions 122, and the barrier portion provided on the inner wall of the ventilation hole 122a. The arrangement and shape of 122b can be changed as appropriate. Further, although the LED is used as an example of the light source 7 in the present embodiment, a small lamp or the like is also possible.

  In addition, as described in detail in the above-described embodiment, the description has been given by taking an example of an instrument device for a vehicle such as a motorcycle. However, the instrument device is not limited to an instrument for a vehicle, but is used for a special instrument such as a marine instrument or an agricultural machine or a construction machine. The present invention can also be applied to an instrument device.

B Electronic component C1 Connector C2 External connector D Indicator instrument S
DESCRIPTION OF SYMBOLS 1 Case 2 Middle case 3 Circuit board 4 Instrument main body 5 Pointer 6 Display board 6a Display part 7 Light source (LED)
8 Wiring cord (wiring member)
DESCRIPTION OF SYMBOLS 9 Waterproof connector cover 11 Upper case 12 Lower case 111 See-through panel 112 Upper case body 120 Opening part 121 Bulging part 122 Ventilation part 122a Venting hole 122b Barrier part 123 Cylindrical part

Claims (3)

And fingers示計unit is driven circuit implementation for driving the indicating instrument, accommodating a circuit board connector for electrically routed formed is provided to the outside, and a circuit board the indicating instrument configuration and the lower case, an upper case disposed on the front surface opening of the lower case made of see-through perspective panel will covering the indicating instrument that, by the lower case and the upper case provided in the lower case A ventilation part having a ventilation hole communicating between the inside of the storage space and the outside air side, an opening provided in a lower case facing the connector, and an external connection connected to the connector via the opening An instrument device, and a wiring member connected to the external connection connector and routed to the outside of the case, wherein the external connection is provided at the periphery of the opening. Together's a position a connector provided with projecting guide can bulge portion, the meter apparatus characterized by comprising providing the ventilation portion on the expanded portion locations.   The lower case is provided with a cylindrical portion along the periphery of the opening toward the outer side of the lower case, and a waterproof connector cover is provided so as to surround the external connection connector. The instrument device according to claim 1, wherein the instrument device is provided. The instrument device according to claim 1, wherein a barrier portion protrudes integrally from an inner wall portion of the vent hole.

Images