JP2015087138A - Vehicular display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular display device capable of taking static electricity measures without increasing the number of components by improving a strength of an inner case by making a member for conducting a panel stopper of a liquid crystal display panel and a circuit board and a reinforcing member of the inner case into common member.SOLUTION: The vehicular display device includes a liquid crystal display panel 1 and a plurality of pointer-type displays partially neighboring to the liquid crystal display panel 1. The vehicular display device also includes the circuit board disposed at a back of the liquid crystal display panel 1 and the inner case configured to surround the liquid crystal display panel 1. By providing the reinforcing member disposed in the inner case, the member for conducting the panel stopper of the liquid crystal display panel 1 and the circuit board and the member for reinforcing the inner case are made into common member.

Description

  The present invention provides a vehicle capable of increasing the strength of the middle case without increasing the number of members by using a common member for conducting the panel restraint of the liquid crystal display panel and the circuit board and a reinforcing member for the middle case. The present invention relates to a display device.

  2. Description of the Related Art Conventionally, as a vehicle display device arranged so that a display indicator is sandwiched in the center of an analog instrument, for example, the one described in Patent Document 1 is known. This vehicular display device is formed by surrounding a space in which a display indicator is stored in the center of an intermediate case made of synthetic resin, with a part of the intermediate case.

Further, such a display device includes a ground member for grounding static electricity charged on the display panel to the circuit board (Patent Document 2).
In recent years, unitized display panels have been sold, and many of them are specified in size, so it is not necessary to design individual inner cases according to the size of the display panel. It was necessary to make a design in which a space that can be placed in the middle case was provided in advance.

JP 2006-126071 A Japanese Patent No. 5141962

  However, when the overall size of the display device for a vehicle is determined and a large display panel is used according to customer requirements, the space where the display panel is arranged becomes the same size as the middle case There is. Therefore, a method of dividing the middle case without changing the size of the vehicle instrument device is conceivable.

  At this time, the display panel is normally held by being surrounded by the middle case, but the middle case is not integrated and is provided at a distant position. Therefore, a structure for ensuring the overall rigidity of the vehicle display device is required.

  Also, when using an off-the-shelf display panel, the distance from the display support frame to the circuit board is not constant depending on the difference in thickness, and a grounding member corresponding to the length from the display panel to the circuit board should be prepared. However, there is a problem that the cost is increased in a simplified structure.

  Therefore, the present invention has been made in view of the above points, and by increasing the strength of the middle case by using a common member for connecting the support frame of the display panel and the circuit board and the reinforcing member of the middle case. An object of the present invention is to provide a vehicle display device capable of taking countermeasures against static electricity without increasing the number of parts.

  The present invention includes a display panel, a plurality of display units at least partially adjacent to the display panel, a circuit board disposed behind the display panel, a middle case configured to surround the display panel, The vehicle display device provided with a reinforcing member disposed in the middle case.

  In the present invention, the reinforcing member is made of a metal material.

  In the present invention, the reinforcing member is fixed between the rear surface side of the display panel and the circuit board.

  In the present invention, the reinforcing member has a plurality of arm pieces, and at least one of the reinforcing members is in contact with the display panel.

  According to the present invention, since the member that conducts the metal frame of the display panel and the circuit board and the reinforcing member of the middle case are made common, the strength of the middle case is increased, and the countermeasure against static electricity can be achieved without increasing the number of parts. A possible vehicle display device can be provided.

1 is a front view of a liquid crystal display device according to a first embodiment of the present invention. The middle case front view same as the above. The enlarged view of a reinforcement member same as the above. The enlarged view of a reinforcement member same as the above. The perspective view of a liquid crystal panel same as the above.

  Embodiments of the liquid crystal display device of the present invention will be described with reference to a panel display A using a liquid crystal display panel and a composite instrument using a pointer-type display B that indicates an indicator with a pointer as an example, with reference to the accompanying drawings. Explained.

  As shown in FIGS. 1 and 2, the liquid crystal display device includes a panel display A and a pointer-type display B. The panel display A includes the liquid crystal display panel 1, the holding member 2, the light source 3, The pointer type indicator B is composed of a pointer 6, a light source 7, a lower case 8, a display plate 9, and a middle case 10, and is composed of a circuit board 4 and a flexible printed wiring board 5. A panel display A and a pointer type display B are accommodated in a lower case 8 made of a permeable resin.

  As shown in FIG. 5, the liquid crystal display panel 1 includes liquid crystal molecules sealed between a front glass substrate 1A and a rear glass substrate 1B, and a polarizing film attached to each of the glass substrates 1A and 1B. When a signal (voltage) corresponding to an external measurement amount is applied to an electrode portion (not shown) provided on each glass substrate 1A, 1B, the operation state of the vehicle (for example, the travel distance of the vehicle and the remaining fuel amount) is displayed. The panel display will appear in black.

  The holding member 2 is a cell case 21 that holds a liquid crystal display panel 1 to be described later. The cell case 2 is made of, for example, white synthetic resin, and the periphery of the liquid crystal display panel 1 is placed thereon.

  The panel retainer 22 is made of, for example, a stainless copper plate, which is a metal material, and has a panel edge and a panel enclosure. After placing the liquid crystal display panel 1 on the mounting portion of the cell case 21, although not shown, the panel enclosure of the panel holder 22 can be held by being fitted into the panel enclosure of the cell case 22, and the liquid crystal display panel 1 is It can be assembled to the cell case 22.

  The back case 23 is made of, for example, a stainless copper plate that is a metal material, and a mounting portion 231 into which a screw to be described later is inserted is integrally formed. Further, a positioning hole 232 into which a positioning pin described later is inserted is formed.

  Although not shown in detail, the flexible printed wiring board 5 is made of, for example, a copper base film made of a synthetic resin made of polyimide resin and connected to an electrode portion provided on the liquid crystal display panel 1 and a circuit provided on the circuit board 4. After forming the electrode part which consists of foils, for example by the etching method, the protective film used as insulation protection except the electrode part of the location connected with the liquid crystal display panel 1 and the circuit board 4 is bonded together. One end of the flexible printed wiring board 7 is fixed to the rear glass substrate 1 </ b> B of the liquid crystal display panel 1, and the other end is inserted into a connector mounted on the circuit board 4.

  The pointer type indicator B is disposed on the same circuit board 4 as the panel indicator A.

  As the circuit board 4, a hard circuit board made of glass epoxy resin can be applied. As shown in FIG. 1, in addition to the light source 7 that illuminates the pointer 6, a control circuit is mounted on the same surface. A circuit pattern (not shown) for supplying power is formed.

  The pointer 6 is a light emitting pointer that is molded from a translucent resin material and emits light by light from the light source 7.

  The display board 9 is obtained by printing a design such as a warning or a number on a light transmissive plate material. The display plate 9 is formed with a through hole for allowing a pointer shaft of a movement (not shown) to pass through the surface side of the display plate 9, and the pointer 6 is attached to the tip of the pointer shaft.

  The middle case 10 is molded from, for example, a white synthetic resin and is disposed on the circuit board 4. In the present embodiment, the middle case 10 includes a first middle case 10 a located on the right side of the liquid crystal display panel 1 and a second middle case 10 b located on the left side of the liquid crystal display panel 1. In addition, the middle case 10 is formed with a reflecting portion 101 that reflects light from the light source 7 mounted on the circuit board 4 around the pointer axis to the display board 9.

  The first middle case 10a and the second middle case 10b are arranged so as to be adjacent to the liquid crystal display panel 1, and each includes a plurality of spacers 11a and 11b protruding toward the liquid crystal display panel 1 side. Positioning pins 12 a and 12 b are formed integrally with the spacers 11 a and 11 b and are inserted into the positioning holes 232 of the back case 23.

  The reinforcing member 15 is formed of a metallic material, and includes a main body portion 150, a screw fastening portion 151, and an arm portion 152. The main body 150 extends in the longitudinal direction, and at least from the liquid crystal display panel end portion of the first middle case 10 a disposed on the right side of the liquid crystal display panel 1 in the middle case 10 to the left side of the liquid crystal display panel 1. The liquid crystal display panel 1 has a length that allows the liquid crystal display panel 1 to be connected to the end portion of the second middle case 10b that is disposed.

  The reinforcing member 15 is disposed between the back surface side of the liquid crystal display panel 1 and the circuit board 5, and the circuit board 4, the screw fastening portion 151 of the reinforcing member 15, and the mounting portion 231 of the back case 23 are connected to the circuit board. 4 is screwed from the back side.

  The arm portion 152 is formed in a direction perpendicular to the main body portion 150, and is arranged so that the plurality of arm portions 152 abut against the panel holding member 22 as shown in FIG. 3. Static electricity charged on the liquid crystal display panel 1 can be released to the circuit board 4 by contacting the metallic arm portion 152 and the panel holding member 22. Further, as shown in FIG. 4, the arm portion 152 has a spring property and thus has a plurality of steps rather than hanging at a right angle.

  The spacers 11a and 11b do not need to be provided if the gap from the mounting portion 231 provided on the back case 23 of the liquid crystal display panel 1 to the circuit board 4 is small, or if the backlash does not occur due to the gap. .

  Thus, according to the present invention, the liquid crystal display panel 1, a plurality of pointer-type displays at least partially adjacent to the liquid crystal display panel 1, the circuit board 4 disposed behind the liquid crystal display panel 1, In the vehicle display device including the middle case 10 configured to surround the liquid crystal display panel 1, the reinforcing member 15 disposed in the middle case 10 is provided. A vehicle display device can be provided in which a member that conducts electricity to the circuit board 4 and a member that reinforces the middle case 10 can be made common.

  Moreover, according to this invention, the reinforcement member 15 can raise the intensity | strength of the middle case 10 by connecting the middle case 10 divided | segmented into right and left by consisting of a metallic material.

  In addition, according to the present invention, the reinforcing member 15 is fixed between the back side of the liquid crystal display panel 1 and the circuit board 4, so that the static electricity charged in the liquid crystal display panel 1 is released to the circuit board 4. Therefore, it is possible to provide a vehicle display device capable of taking countermeasures against static electricity without increasing the number of members.

  Further, according to the present invention, the reinforcing member 15 has a plurality of arms 152, and at least one of the reinforcing members 15 is in contact with the panel holding member 22 of the liquid crystal display panel 1. Since it can escape to the circuit board 4, the display apparatus for vehicles which can take countermeasures against static electricity without increasing the number of parts can be provided.

  The middle case 10 has been described as being composed of a first middle case 10a located on the right side of the liquid crystal display panel 1 and a second middle case 10b located on the left side of the liquid crystal display panel 1. The first middle case 10a and the second middle case 10b are connected so as to cover the periphery of the liquid crystal display panel 1 on the side facing the one side of the liquid crystal display panel 1 on which the reinforcing member is disposed, and are integrated. In this case as well, the strength of one side of the liquid crystal display panel 1 in which the first middle case 10a and the second middle case 10b are not connected can be increased by arranging the reinforcing member. Can be achieved and the intended purpose can be achieved.

1 Liquid crystal display panel 2 Holding member 3 Light source 4 Circuit board 5 Flexible printed wiring board 6 Pointer 7 Light source 8 Lower case 9 Display plate 10 Middle case 10a First middle case 10b Second middle case 11a, 11b Spacers 12a, 12b Positioning Pin 15 Reinforcement member 21 Cell case 22 Panel restraint 23 Back case 150 Body portion 151 Screw fastening portion 152 Arm portion (arm piece portion)
231 Mounting portion 232 Positioning hole A Panel display (display panel)
B Pointer type indicator (display unit)

Claims (4)

A display panel;
A plurality of display portions at least partially adjacent to the display panel;
A circuit board disposed behind the display panel;
A middle case configured to surround the display panel;
In a vehicle display device comprising:
A vehicle display device comprising a reinforcing member disposed in the middle case. The vehicle display device according to claim 1, wherein the reinforcing member is made of a metallic material. The vehicle display device according to claim 1, wherein the reinforcing member is fixed between a rear surface side of the display panel and the circuit board. 4. The vehicle display device according to claim 1, wherein the reinforcing member has a plurality of arm pieces, and at least one of the reinforcing members is in contact with the display panel. 5.

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