JP7004213B2

JP7004213B2 - Display device

Info

Publication number: JP7004213B2
Application number: JP2018033839A
Authority: JP
Inventors: 裕藤田
Original assignee: Nippon Seiki Co Ltd
Current assignee: Nippon Seiki Co Ltd
Priority date: 2018-02-27
Filing date: 2018-02-27
Publication date: 2022-01-21
Anticipated expiration: 2038-02-27
Also published as: JP2019148723A

Description

本開示は、表示パネルを有する表示装置に関するものである。 The present disclosure relates to a display device having a display panel.

従来より、表示器を保護する保護カバーを備えた表示装置が種々提案されており、例えば特許文献１に開示されている。斯かる表示装置は、液晶表示器と回路基板とを、保護カバーとハウジングからなる筐体に収容したものである。保護カバーは、透光性樹脂からなるものであり、液晶表示器の画面は、保護カバーを通して視認される。液晶表示器は、液晶表示パネル及びバックライトモジュールをケース体に収納したものである。液晶表示器のケース体は、回路基板の前面に固定されている。 Conventionally, various display devices provided with a protective cover for protecting the display device have been proposed, and are disclosed in, for example, Patent Document 1. In such a display device, the liquid crystal display and the circuit board are housed in a housing including a protective cover and a housing. The protective cover is made of a translucent resin, and the screen of the liquid crystal display is visually recognized through the protective cover. The liquid crystal display is a case in which a liquid crystal display panel and a backlight module are housed. The case body of the liquid crystal display is fixed to the front surface of the circuit board.

特開２０１７－１１１３１２号公報JP-A-2017-1111312

近年、画面と表示装置の外形との距離が狭いデザインが好まれるようになっている。しかしながら、上記した表示装置では、液晶表示器をケース体で覆い、更に、その外側をハウジングで覆う必要があるため、画面と表示装置の外形との距離が大きくなるといった問題点を有していた。 In recent years, designs in which the distance between the screen and the outer shape of the display device is narrow have come to be preferred. However, in the above-mentioned display device, since it is necessary to cover the liquid crystal display with a case body and further cover the outside thereof with a housing, there is a problem that the distance between the screen and the outer shape of the display device becomes large. ..

そこで、本開示は、上記問題点に鑑みてなされたものであり、表示パネルを有する表示装置において、デザイン性に優れた表示装置を提供することを目的とする。 Therefore, the present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a display device having an excellent design in a display device having a display panel.

本開示は、情報を表示画面１１に表示する表示パネル１と、前記表示パネル１の前記表示画面１１側に配置され、前記表示画面１１を視認可能とする透光部２１を有する保護カバー２と、前記表示パネル１を背後から照明する照明部材３と、前記表示パネル１と前記照明部材３とを収容するハウジング部材５と、を備え、前記照明部材３と前記ハウジング部材５とは、初期的に流動性を有し、後に硬化する接着部材６により固定され、
前記照明部材３は、光源３１と、前記光源３１からの光を透過する光学シート３３と、を有し、
前記接着部材６は、前記光学シート３３と前記ハウジング部材５のみを固定することを特徴とする。
The present disclosure comprises a display panel 1 that displays information on a display screen 11 and a protective cover 2 that is arranged on the display screen 11 side of the display panel 1 and has a translucent portion 21 that makes the display screen 11 visible. A lighting member 3 that illuminates the display panel 1 from behind, and a housing member 5 that houses the display panel 1 and the lighting member 3, and the lighting member 3 and the housing member 5 are initially used. Is fixed by the adhesive member 6 which has fluidity and is cured later.
The lighting member 3 has a light source 31 and an optical sheet 33 that transmits light from the light source 31.
The adhesive member 6 is characterized in that only the optical sheet 33 and the housing member 5 are fixed .

本開示によれば、表示パネルを有する表示装置において、デザイン性に優れた表示装置を提供することができる。 According to the present disclosure, it is possible to provide a display device having an excellent design in a display device having a display panel.

本開示の第１の実施形態を示す表示装置の正面図。The front view of the display device which shows the 1st Embodiment of this disclosure. 図１中のＡ－Ａ線に沿った断面図。A cross-sectional view taken along the line AA in FIG. 図１中のＢ－Ｂ線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line BB in FIG. 図１のハウジング部材と照明部材を示す図。The figure which shows the housing member and the lighting member of FIG. 図２における本開示の第２の実施形態を示す図FIG. 2 is a diagram showing a second embodiment of the present disclosure in FIG.

本開示の表示装置の第１の実施形態を図１乃至４に示す。表示装置は、車両（例えば、自動車）のダッシュボードの上に搭載され、図１に示すように、所定の計測量（車両速度など）を表示する計器装置（いわゆるメータ）１００である。 The first embodiment of the display device of this disclosure is shown in FIGS. The display device is an instrument device (so-called meter) 100 mounted on the dashboard of a vehicle (for example, an automobile) and displaying a predetermined measured amount (vehicle speed or the like) as shown in FIG.

尚、以下では、計器装置１００の構成の理解を容易にするために、説明中、計器装置１００から車両運転席に着座したユーザーを見る方向を「前」といい、奥側を「後」という。 In the following, in order to facilitate understanding of the configuration of the instrument device 100, the direction in which the user sitting in the driver's seat of the vehicle is viewed from the instrument device 100 is referred to as "front", and the back side is referred to as "rear". ..

計器装置１００は、車両情報を表示画面１１に表示する表示パネル１と、表示画面１１側に配置され、表示画面１１を視認可能とする透光部２１を有する保護カバー２と、表示パネル１を背後から照明する照明部材３と、表示パネル１を制御する制御手段を実装し表示パネル１に駆動信号を出力する回路基板４と、表示パネル１，照明部材３，回路基板４を収容するハウジング部材５と、照明部材３とハウジング部材５とを接着固定する接着部材６と、表示パネル１と照明部材３との間に配置される第１の緩衝部材７と、保護カバー２とハウジング部材５との間に配置される第２の緩衝部材８と、から構成される。 The instrument device 100 includes a display panel 1 that displays vehicle information on the display screen 11, a protective cover 2 that is arranged on the display screen 11 side and has a translucent portion 21 that makes the display screen 11 visible, and a display panel 1. A housing member that houses a lighting member 3 that illuminates from behind, a circuit board 4 that mounts a control means for controlling the display panel 1 and outputs a drive signal to the display panel 1, and a display panel 1, a lighting member 3, and a circuit board 4. 5, an adhesive member 6 for adhesively fixing the lighting member 3 and the housing member 5, a first cushioning member 7 arranged between the display panel 1 and the lighting member 3, a protective cover 2 and a housing member 5. It is composed of a second cushioning member 8 arranged between the two.

表示パネル１は、例えば、ＴＦＴ（ＴｈｉｎＦｉｌｍＴｒａｎｓｉｓｔｏｒ）型の液晶ディスプレイ（ＬＣＤ：ＬｉｑｕｉｄＣｒｙｓｔａｌＤｉｓｐｌａｙ）からなる。また、表示パネル１は、表示画面１１に、車両速度１１ａや残燃料１１ｂ等の車両情報を表示する。 The display panel 1 is made of, for example, a TFT (Thin Film Transistor) type liquid crystal display (LCD: Liquid Crystal Display). Further, the display panel 1 displays vehicle information such as the vehicle speed 11a and the remaining fuel 11b on the display screen 11.

また、表示パネル１は、図示しないフレキシブル配線板（ＦＰＣ：ＦｌｅｘｉｂｌｅＰｒｉｎｔｅｄＣｉｒｃｕｉｔｓ）を有し、このフレキシブル配線板が、回路基板４に実装されたコネクタに接続されることにより、回路基板４と通電される。 Further, the display panel 1 has a flexible wiring board (FPC: Flexible Printed Circuits) (not shown), and the flexible wiring board is connected to a connector mounted on the circuit board 4 to be energized with the circuit board 4. Ru.

保護カバー２は、透光性の合成樹脂（例えばアクリルなど）からなり、平面状に形成され、表示パネル１の前面を覆うものである。また、保護カバー２は、裏面に遮光性インクが印刷された遮光部２２を有する。遮光部２２は、表示パネル１の表示画面１１を透視可能とする透光部２１を除き、保護カバー２の外周の縁に至るまで形成されている。また、遮光部２２は、接着部材６を前面側から視認不可とするように形成されている。尚、保護カバー２は、無機ガラスからなるものであってもよい。 The protective cover 2 is made of a translucent synthetic resin (for example, acrylic), is formed in a flat shape, and covers the front surface of the display panel 1. Further, the protective cover 2 has a light-shielding portion 22 on which a light-shielding ink is printed on the back surface. The light-shielding portion 22 is formed up to the outer peripheral edge of the protective cover 2, except for the translucent portion 21 that allows the display screen 11 of the display panel 1 to be seen through. Further, the light-shielding portion 22 is formed so that the adhesive member 6 cannot be visually recognized from the front surface side. The protective cover 2 may be made of inorganic glass.

表示パネル１と保護カバー２は、透明樹脂層９により接着されている。透明樹脂層９は、透明光学粘着（ＯＣＡ：ＯｐｔｉｃａｌＣｌｅａｒＡｄｈｅｓｉｖｅ）シートから構成されており、保護カバー２の裏面と表示パネル１の前面の表示画面１１との間に隙間なく重ね合わされて、両者を接着する。尚、透明樹脂層９は、ゲル状の透明材料が充填されてもよい。 The display panel 1 and the protective cover 2 are adhered to each other by the transparent resin layer 9. The transparent resin layer 9 is composed of a transparent optical adhesive (OCA) sheet, and is laminated without a gap between the back surface of the protective cover 2 and the display screen 11 on the front surface of the display panel 1, and both are overlapped with each other. Glue. The transparent resin layer 9 may be filled with a gel-like transparent material.

透明樹脂層９は、その厚さは３００μｍ～１０００μｍ程度となっており、また、その屈折率は１．４５～１．５５となっており、保護カバー２の屈折率と略同等の屈折率に設定されている。 The transparent resin layer 9 has a thickness of about 300 μm to 1000 μm and a refractive index of 1.45 to 1.55, which is substantially the same as the refractive index of the protective cover 2. It is set.

また、透明樹脂層９は、図２，３に示すように、透光部２１に対向し、かつ、遮光部２２に重なるように形成されている。また、透明樹脂層９は、表示パネル１と保護カバー２とを接合するにあたって、少なくとも一方に塗布し、その後、透明樹脂層９を用いて表示パネル１と保護カバー２とを貼り合わせた後、透明樹脂層９を硬化（例えばＵＶ硬化）させることで、接着性を得ることができる。 Further, as shown in FIGS. 2 and 3, the transparent resin layer 9 is formed so as to face the translucent portion 21 and overlap the light-shielding portion 22. Further, the transparent resin layer 9 is applied to at least one of the display panel 1 and the protective cover 2 when the display panel 1 and the protective cover 2 are joined, and then the display panel 1 and the protective cover 2 are bonded to each other by using the transparent resin layer 9. By curing the transparent resin layer 9 (for example, UV curing), adhesiveness can be obtained.

照明部材３は、表示パネル１の後方に配設されており、表示パネル１を透過照明する。また、照明部材３は、光源３１と、光源３１からの光を導光する導光部材３２と、導光部材３２からの光を透過する光学シート３３と、を有する。 The lighting member 3 is arranged behind the display panel 1 and illuminates the display panel 1 in a transmitted manner. Further, the lighting member 3 includes a light source 31, a light guide member 32 that guides light from the light source 31, and an optical sheet 33 that transmits light from the light guide member 32.

光源３１は、適宜色を発するトップビュー型のチップ型発光ダイオード（ＬＥＤ：ＬｉｇｈｔＥｍｉｔｔｉｎｇＤｉｏｄｅ）からなる。光源３１は、光源基板３４の上に複数個実装されている。この光源基板３４は、ハウジング部材５に固定されている。また、光源基板３４は、ＦＰＣ等の各種導通手段により、回路基板４に接続されている。 The light source 31 is composed of a top-view type chip-type light emitting diode (LED: Light Emitting Diode) that emits an appropriate color. A plurality of light sources 31 are mounted on the light source substrate 34. The light source substrate 34 is fixed to the housing member 5. Further, the light source substrate 34 is connected to the circuit board 4 by various conductive means such as FPC.

導光部材３２は、図３に示すように、透光性の合成樹脂（例えばアクリルなど）からなり、光源３１の点灯によりその照射光を端部３２ａから受けて、導光部材３２内に光を入射し、その光を表示パネル１の方へ出射する。また、導光部材３２の背後には、反射シート３５が密着配置されている。反射シート３５は、白色の樹脂シートからなり、導光部材３２を導光する光の導光効率を向上させると共に、光を表示パネル１の方へ反射させる。 As shown in FIG. 3, the light guide member 32 is made of a translucent synthetic resin (for example, acrylic), receives the irradiation light from the end portion 32a by lighting the light source 31, and emits light into the light guide member 32. Is incident, and the light is emitted toward the display panel 1. Further, a reflective sheet 35 is closely arranged behind the light guide member 32. The reflective sheet 35 is made of a white resin sheet, improves the light guiding efficiency of the light guiding the light guide member 32, and reflects the light toward the display panel 1.

光学シート３３は、表示パネル１と導光部材３２の間に配設されており、導光部材３２から発せられた照明光を拡散させる。本開示では、光学シート３３は、前面に２枚設けられる表面に筋状の凹凸のあるプリズムシート３３ａ，３３ｂと、その背後に１枚設けられる表面に粒々状の凹凸のある拡散シート３３ｃと、の計３枚が設けられている。尚、本開示のプリズムシートは、表面に凹凸のあるＢＥＦ（ＢｒｉｇｈｔｎｅｓｓＥｎｈａｎｃｅｍｅｎｔＦｉｌｍ）等の光学フィルムである。光学シート３３としての枚数や順序、種類としては、適宜設定して配置するようにしてもよい。 The optical sheet 33 is arranged between the display panel 1 and the light guide member 32, and diffuses the illumination light emitted from the light guide member 32. In the present disclosure, the optical sheet 33 includes two prism sheets 33a and 33b having streaky irregularities on the surface provided on the front surface, and one diffusion sheet 33c having grain-like irregularities on the surface provided behind the prism sheets 33a and 33b. A total of 3 sheets are provided. The prism sheet of the present disclosure is an optical film such as BEF (Brightness Enhancement Film) having an uneven surface. The number, order, and types of the optical sheets 33 may be appropriately set and arranged.

また、図４に示すように、導光部材３２，光学シート３３，反射シート３５は、それぞれ位置決め孔Ｈを有する。位置決め孔Ｈは、ハウジング部材５に形成された位置決めピン５２に挿入される。このように形成されることで、導光部材３２，光学シート３３，反射シート３５は、ハウジング部材５に位置決めされる。 Further, as shown in FIG. 4, the light guide member 32, the optical sheet 33, and the reflective sheet 35 each have a positioning hole H. The positioning hole H is inserted into the positioning pin 52 formed in the housing member 5. By being formed in this way, the light guide member 32, the optical sheet 33, and the reflective sheet 35 are positioned on the housing member 5.

回路基板４は、例えばＦＲ－４（ＦｌａｍｅＲｅｔａｒｄａｎｔ－４）等の平板状のガラスエポキシ系基材に配線パターンを施した硬質配線基板からなる。また、回路基板４は、表示パネル１や光源基板３４を駆動・制御させるための指令信号（駆動信号）を出力する制御手段，抵抗，コンデンサ等の各種回路部品（図示せず）を実装する。 The circuit board 4 is made of a hard wiring board in which a wiring pattern is applied to a flat glass epoxy-based substrate such as FR-4 (Flame Retardant-4). Further, the circuit board 4 mounts various circuit components (not shown) such as a control means, a resistor, and a capacitor for outputting a command signal (drive signal) for driving and controlling the display panel 1 and the light source board 34.

また、回路基板４は、照明部材３の背後のハウジング部材５の一部が背後に突出して形成された凸部５１に収容されている。また、回路基板４は、ネジなどの固定具で、ハウジング部材５に固定されている。また、回路基板４は、表示パネル１，光源基板３４と電気的に接続されている。 Further, the circuit board 4 is housed in a convex portion 51 formed by a part of the housing member 5 behind the lighting member 3 projecting to the rear. Further, the circuit board 4 is fixed to the housing member 5 with a fixing tool such as a screw. Further, the circuit board 4 is electrically connected to the display panel 1 and the light source board 34.

ハウジング部材５は、マグネシウム等の金属からなり、前方が開口した箱体形状に形成され、内部に表示パネル１，照明部材３，回路基板４を収容する。また、ハウジング部材５は、表面の酸化を防止する処置として、例えば、表面全体に陽極酸化被膜処理が施されている。回路基板４を収容する凸部５１は、図４に示すように、ハウジング部材５の外形の内側に形成されている。尚、ハウジング部材５は、アルミニウム等の金属からなるものであってもよい。 The housing member 5 is made of a metal such as magnesium and is formed in a box shape having an open front, and houses a display panel 1, a lighting member 3, and a circuit board 4 inside. Further, as a measure for preventing the surface of the housing member 5 from being oxidized, for example, the entire surface of the housing member 5 is subjected to an anodic oxide film treatment. As shown in FIG. 4, the convex portion 51 accommodating the circuit board 4 is formed inside the outer shape of the housing member 5. The housing member 5 may be made of a metal such as aluminum.

第１の緩衝部材７は、黒色等の遮光性で弾性を有する例えばゴムやスポンジ等の材料からなり、厚みのある略長方形に形成されている。第１の緩衝部材７は、図２、３に示すように、表示パネル１と照明部材３との間に圧縮状態で保持されることで反発力を持ち、照明部材３の防振用として機能する。 The first cushioning member 7 is made of a material such as rubber or sponge, which has elasticity and is light-shielding, such as black, and is formed into a thick substantially rectangular shape. As shown in FIGS. 2 and 3, the first cushioning member 7 has a repulsive force by being held in a compressed state between the display panel 1 and the lighting member 3, and functions as a vibration isolator for the lighting member 3. do.

また、第１の緩衝部材７は、図４に示すように、照明部材３の外周に配置され、照明部材３側の面に両面接着テープが貼着され、照明部材３に貼り付けられている。また、第１の緩衝部材７は、接着部材６の塗布範囲の内側に配置されているため、接着部材６の塗布時において、接着部材６が表示パネル１と照明部材３との隙間に流入することを防止することができる。 Further, as shown in FIG. 4, the first cushioning member 7 is arranged on the outer periphery of the lighting member 3, and a double-sided adhesive tape is attached to the surface of the lighting member 3 side, and is attached to the lighting member 3. .. Further, since the first cushioning member 7 is arranged inside the coating range of the adhesive member 6, the adhesive member 6 flows into the gap between the display panel 1 and the lighting member 3 when the adhesive member 6 is applied. It can be prevented.

第２の緩衝部材８は、黒色等の遮光性を有する厚みのある両面テープからなる。第２の緩衝部材８は、図２、３に示すように、保護カバー２とハウジング部材５との間に保持される。また、第２の緩衝部材８は、保護カバー２の外周を取り巻くように配置され、保護カバー２とハウジング部材５とを接着する。 The second cushioning member 8 is made of a thick double-sided tape having a light-shielding property such as black. As shown in FIGS. 2 and 3, the second cushioning member 8 is held between the protective cover 2 and the housing member 5. Further, the second cushioning member 8 is arranged so as to surround the outer periphery of the protective cover 2, and adheres the protective cover 2 and the housing member 5.

このように形成されることにより、計器装置１００は、保護カバー２とハウジング部材５とにより閉じられた筐体で形成される。 By being formed in this way, the instrument device 100 is formed of a housing closed by the protective cover 2 and the housing member 5.

接着部材６は、接着性のエポキシ系樹脂材料やシリコン系樹脂材料などからなり、初期的に液状で流動性を有し、後に自然乾燥により硬化する常温硬化性の接着剤である（後に熱を加えて硬化する熱硬化性の接着剤であってもよい）。また、接着部材６は、黒色顔料を配合した黒色の着色接着剤からなり、遮光性を有する。また、接着部材６は、図２に示すように、照明部材３の側面とハウジング部材５との間に注入され、両者を接着固定する。 The adhesive member 6 is made of an adhesive epoxy resin material, a silicon resin material, or the like, and is a room temperature curable adhesive that is initially liquid and has fluidity and is later cured by natural drying (later heat is applied). It may be a thermosetting adhesive that cures in addition). Further, the adhesive member 6 is made of a black colored adhesive containing a black pigment and has a light-shielding property. Further, as shown in FIG. 2, the adhesive member 6 is injected between the side surface of the lighting member 3 and the housing member 5, and both are adhered and fixed.

また、接着部材６は、図４に示すように、照明部材３の外周の光源３１以外の３辺に塗布される。つまり、接着部材６は、光学シート３３，導光部材３２，反射シート３５と、ハウジング部材５とを接着固定する。このように形成されることにより、光源３１に接着部材６が塗布されてしまい、光源３１からの光を遮蔽する虞を回避することができる。 Further, as shown in FIG. 4, the adhesive member 6 is applied to three sides other than the light source 31 on the outer periphery of the lighting member 3. That is, the adhesive member 6 adheres and fixes the optical sheet 33, the light guide member 32, the reflective sheet 35, and the housing member 5. By being formed in this way, it is possible to avoid the possibility that the adhesive member 6 is applied to the light source 31 and the light from the light source 31 is shielded.

以上、このように形成されることにより、保護カバー２の面方向において、保護カバー２とハウジング部材５は第２の緩衝部材８で接着されるので、幅を取る固定構造を必要としない。また、ハウジング部材５は金属なので、板厚を薄くできる。また、照明部材３とハウジング部材５との間は接着部材６で固定されるので、幅を取る固定構造を必要としない。よって、表示画面１１と計器装置１００の外形との距離が小さい（遮光部２２の外周方向の幅Ｗが小さい）、見栄えの商品性の高い表示装置を提供することができる。 As described above, by being formed in this way, the protective cover 2 and the housing member 5 are adhered to each other by the second cushioning member 8 in the surface direction of the protective cover 2, so that a fixing structure having a large width is not required. Further, since the housing member 5 is made of metal, the plate thickness can be reduced. Further, since the lighting member 3 and the housing member 5 are fixed by the adhesive member 6, a fixing structure having a large width is not required. Therefore, it is possible to provide a display device having a small distance between the display screen 11 and the outer shape of the instrument device 100 (the width W in the outer peripheral direction of the light-shielding portion 22 is small) and having a high-quality commercial value.

また、このように形成されることにより、保護カバー２の法線方向において、保護カバー２と表示パネル１との間は透明樹脂層９のみなので、空隙を小さくできる。また、照明部材３とハウジング部材５は密着しているので、空隙がほぼ無し（零）にできる。また、ハウジング部材５は金属なので、板厚を薄くできる。また、ハウジング部材５の凸部５１は、外周側には形成されない。よって、保護カバー２の前面とハウジング部材５の背面の厚さＴが薄い、見栄えの商品性の高い表示装置を提供することができる。 Further, by being formed in this way, since only the transparent resin layer 9 is formed between the protective cover 2 and the display panel 1 in the normal direction of the protective cover 2, the gap can be reduced. Further, since the lighting member 3 and the housing member 5 are in close contact with each other, the void can be made almost zero (zero). Further, since the housing member 5 is made of metal, the plate thickness can be reduced. Further, the convex portion 51 of the housing member 5 is not formed on the outer peripheral side. Therefore, it is possible to provide a display device having a thin thickness T on the front surface of the protective cover 2 and the back surface of the housing member 5 and having a high appearance and high commercial value.

本開示の第２の実施形態を図５に示す。前述した第１の実施形態と同一部分、均等部箇所については同一符号を付して説明する。 A second embodiment of the present disclosure is shown in FIG. The same parts and equal parts as those of the first embodiment described above will be described with the same reference numerals.

第１の実施形態では、接着部材６は、接着部材６は、光学シート３３，導光部材３２，反射シート３５と、ハウジング部材５とを接着固定していたが、第２の実施形態では、接着部材６は、光学シート３３とハウジング部材５のみを接着固定する。より詳細に説明すると、接着部材６は、プリズムシート３３ａのみに塗布され、プリズムシート３３ａのみをハウジング部材５に接着する。このとき、プリズムシート３３ｂ，拡散シート３３ｃ，導光部材３２，反射シート３５は、適宜両面テープで固定されている。 In the first embodiment, the adhesive member 6 adheres and fixes the optical sheet 33, the light guide member 32, the reflective sheet 35, and the housing member 5 to the adhesive member 6, but in the second embodiment, the adhesive member 6 is adhered and fixed. The adhesive member 6 adheres and fixes only the optical sheet 33 and the housing member 5. More specifically, the adhesive member 6 is applied only to the prism sheet 33a, and only the prism sheet 33a is adhered to the housing member 5. At this time, the prism sheet 33b, the diffusion sheet 33c, the light guide member 32, and the reflective sheet 35 are appropriately fixed with double-sided tape.

図２及び図５に示すように、プリズムシート３３ａは、プリズムシート３３ｂや拡散シート３３ｃよりも外形が大きく形成されているため、プリズムシート３３ａのみをハウジング部材５に接着することを容易にすることができる。 As shown in FIGS. 2 and 5, since the prism sheet 33a has a larger outer shape than the prism sheet 33b and the diffusion sheet 33c, it is easy to bond only the prism sheet 33a to the housing member 5. Can be done.

このように形成されることにより、接着部材６の塗布量を少なくし、接着部材６の塗布工程の時間を短縮することができる。 By being formed in this way, the coating amount of the adhesive member 6 can be reduced, and the time of the coating process of the adhesive member 6 can be shortened.

尚、本発明の表示装置を上記した実施形態の構成にて例に挙げて説明したが、本発明はこれに限定されるものではなく、他の構成においても、本発明の要旨を逸脱しない範囲において種々の改良、並びに設計の変更が可能なことは勿論である。 Although the display device of the present invention has been described by way of example in the configuration of the above-described embodiment, the present invention is not limited to this, and other configurations do not deviate from the gist of the present invention. Of course, various improvements and design changes are possible.

表示装置の表示手段である表示パネル１は、マルチドットタイプやセグメントタイプのものであってもよく、単色表示やフルカラー表示及びポジ・ネガ表示は問わない。また、照明手段である光源３１としてＬＥＤを用いていたが、他の照明手段であってもよい。 The display panel 1 which is a display means of the display device may be a multi-dot type or a segment type, and may be a single color display, a full color display, or a positive / negative display. Further, although the LED is used as the light source 31 which is the lighting means, other lighting means may be used.

本開示は、車両用の表示装置に関し、例えば、自動車やオートバイ、あるいは農業機械や建設機械を備えた移動体に搭載される車両用の表示装置に適用することができる。 The present disclosure relates to a display device for a vehicle, and can be applied to, for example, a display device for a vehicle mounted on a moving body equipped with an automobile, a motorcycle, or an agricultural machine or a construction machine.

１表示パネル
１１表示画面
２保護カバー
２１透光部
２２遮光部
３照明部材
３１光源
３２導光部材
３３光学シート
５ハウジング部材
６接着部材
７第１の緩衝部材
８第２の緩衝部材
９透明樹脂層 1 Display panel 11 Display screen 2 Protective cover 21 Translucent part 22 Light-shielding part 3 Lighting member 31 Light source
32 Light guide member
33 Optical sheet
5 Housing member 6 Adhesive member 7 First cushioning member 8 Second cushioning member 9 Transparent resin layer

Claims

A display panel that displays information on the display screen, and
A protective cover arranged on the display screen side of the display panel and having a translucent portion that makes the display screen visible,
A lighting member that illuminates the display panel from behind, and
A housing member for accommodating the display panel and the lighting member is provided.
The lighting member and the housing member are initially fluidized and fixed by an adhesive member that cures later.
The lighting member includes a light source and an optical sheet that transmits light from the light source.
The adhesive member is a display device characterized in that only the optical sheet and the housing member are fixed .

The display device according to claim 1, wherein the adhesive member has a light-shielding property.

The display device according to claim 1, further comprising a first cushioning member arranged between the display panel and the lighting member.

The display device according to claim 1, further comprising a second cushioning member arranged between the protective cover and the housing member.

The display device according to claim 1, wherein the protective cover has a light-shielding portion that makes the adhesive member invisible.

The display device according to claim 1, further comprising a transparent resin layer for adhering the display panel and the protective cover.