A7 B7 五、發明説明（j ) 〔發明之所屬技術領域〕 本發明係有關針對在暗處可使鍵端發光，適於使用在 行動電話等之各種電子機器之照光式按鈕開關。 〔以往之技術〕 針對最近普及率上昇之行動電話等，爲了使希望表示 數字、文字等之鍵端在夜間等之暗處也能使使用者明確辨 視，所以鍵端之顯示部份則利用L E D (發光二極體）等 光源來進行照光之按鈕開關則被廣範地採用。 經濟部中央樣準局貝工消费合作社印氧 (請先閱讀背面之注項再填寫本頁) 作爲如此之照光式按鈕開關之以往技術係於搭載 L E D及接績器等之電路基板上，依序重量附加碰觸手段 之薄膜開關等開關層與，接績丙烯鍵端於矽墊表面之按鈕 薄板層之構成爲主流，而在丙烯鍵端底面印刷形成有表示 其鍵端之操作內的顯示部。即，有關以往複數配設之照光 式按鈕開關的操作面板係當利用者按壓所希望之鍵端時， 該鍵端週邊部之矽墊則會彎曲，然後薄膜開關則伴隨觸感 來驅動按壓，另使L E D發光時，因其光線則經由接續層 之開口部照射於矽墊，所以擴散在乳白色之矽墊之光則照 射於按鈕薄板層3各顯示部，然後在無色透明之各鍵端底 面照射表示各自操作內容之數字及文字。 〔欲解決發明之課題〕 但，上述之以往技術係因使擁.有只須發揮光擴散機亨g 之厚度之矽墊與，折返形狀之薄膜開關等接續層介在於鍵 本纸張尺度適用中國國家標準（CNS ) A4规格（210X297公釐) " — -4 - 經濟部中央揉準局員工消费合作杜印製 A7 _B7_ 五、發明説明（2 )A7 B7 V. Description of the invention (j) [Technical field of invention] The present invention relates to a light-operated push button switch for various electronic devices that can make a key terminal emit light in a dark place and is suitable for use in a mobile phone or the like. [Previous technology] For mobile phones and other devices that have recently increased in popularity, in order to make the keypads showing numbers and characters visible in dark places such as nighttime, users can clearly see them, so the display part of the keypads is used. Pushbutton switches for illuminating light sources such as LEDs (light emitting diodes) are widely used. The Central Technology Bureau of the Ministry of Economic Affairs, Printed Oxygen Cooperative Co., Ltd. (please read the note on the back before filling this page). The conventional technology for such illuminated push button switches is based on circuit boards equipped with LEDs and relays. The switch layer, such as a membrane switch with additional touch means, and the button sheet layer with the acrylic key on the surface of the silicon pad are the mainstream, and the bottom of the acrylic key is printed with a display indicating the operation of the key. unit. That is, the operation panel of the illuminated push-button switch provided with a reciprocating number is that when a user presses a desired key end, the silicon pad around the key end is bent, and then the membrane switch is driven with a touch, In addition, when the LED is made to emit light, the light is irradiated to the silicon pad through the opening of the connection layer, so the light diffused in the milky white silicon pad is irradiated to each display portion of the button sheet layer 3, and then irradiated to the bottom of the colorless and transparent key end Numbers and words indicating the contents of each operation. [The problem to be solved by the invention] However, the above-mentioned conventional technology is because of the support. There are silicon pads that only need to make use of the thickness of the light diffusing machine, and connection layers such as film switches with a folded shape are applied to the paper size of the keypad. China National Standard (CNS) A4 Specification (210X297 mm) " — -4-Consumption Cooperation between Staff and Workers of the Central Bureau of the Ministry of Economic Affairs Du A7 _B7_ V. Description of Invention (2)
端與電路基板之間，所以有著不易促使最近行動電話等之 薄型化之問題。另，有關以往之技術係因L E D的光則經 由接續層之開口部照射於矽墊，以導致被接績層遮蔽無法 有效利用光線，所以如不增加L E D數置則無法得到充份 的亮度。也就是，作爲照光用光源則必需要多數之L E D ，還有，因矽墊構件單價較髙，結果上述之以往技術係有 著高成本問題，不利於低價化之促進。 〔爲解課題乏手段〕 本發明係介設光擴散薄板於與鍵端成爲一體之透光性 薄板與搭載光源及開關元件之電路基板之間，再於此光擴 散薄板正反兩面設置因應鍵端與開關元件之突起部。如根 據如此構成之照光式按鈕開關，因對於各薄板材可使用 P E T等低價位且薄的薄膜，所以可採用使鍵端與電路基 板極爲接近之薄型化構造;5：同時，也促進低成本化。 〔發明之實施形態〕 在本發明之照光式按鈕開關之中，係備有透光性鍵端 則一體形成於透光性薄板材表面，且顯示部則設置在前述 鍵端配設處之第1薄板餍與，設置突起部在擁有光擴散功 能之透光性薄板材正反兩面，再對向配置於前述第1薄板 層之薄板反面之第2薄板層與，對於前述第2薄板層搭載 從和前述第1薄板層側之相反側照射光線之光源及接受從 前述鍵端的按壓力，然後，進行驅動之開關元件之電路基 本紙張尺度適用中國國家標率（CNS ) Α4规格（210X297公釐） (請先Η讀背面之注$項再填寫本頁) 訂 -5 - 經濟部中央標準局貝工消费合作社印氧 A7 B7 五、發明説明Q ) 板，而前述突起部則安置在因應各自之前述鍵端與前述開 關元件之位置所構成者。 前述第1薄板層係可根據接著及表面形成技術等一體 形成由丙烯等而成之透光性的鍵端於由P E T等而成之透 光性薄板材表面來構成。 另，前述顯示部係爲表示數字及文字等之鍵端操作內 容之構成，可印刷形成在所因應之鍵端底面及頂面或第1 薄板層之薄板材表面或者反面。 另，前迷第2薄板層係作爲光擴散薄板來發揮其功能 之構成，根據施於梨地處理在薄板材表面及使用乳白色材 料，將可維持光擴散功能。 另，前述突起部係利用浮雕加工使第2薄板層薄板材 自體膨出形成也可以，但，當如果以印刷將環氧樹脂等形 成在該薄板材正反兩面時，則希望確保在突起部所需要之 硬度與高度。 另加上於上述之構成，如前述第2薄板層覆蓋前述電 路基板表面，則可密閉此電路基板之電氣電路露出之空間 ，所以可廉價地實現防塵防水構造。 〔實施例〕 有關實施例，當參照圖面進行說明時，圖1則有關本 發明之一實施例的按鍵開關群之分解斜視圖，圖2則是表 示在圖1之按鈕開關群組裝後之剖面圖。 表示於圈1，2之照光式按鈕開關群係由作爲行動電 本紙張尺度適用中國國家揲準（CNS ) A4洗格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 订 -6- 經濟部中央標準局貝工消费合作社印製 A7 B7 五、發明説明（4 ) 話作盤所使用之構成，配例丙烯製無色或有色透明之複數 鍵端1於縱横列，然後接著於P E T薄膜2之表面而成之 第1薄板餍3與，將複數無色或有色之透明突起部5設置 在經梨地處理之表面的P E T薄膜4正反兩面而成之第2 薄板層6與，搭載複數L E D 7及複數間歇開關8及無圖 示之連接器等，然後由焊錫安裝之電路基板9所槪略構成 〇 針對第1薄板層3，於各鍵端1底面係印刷形成有表 示其鍵端1之操作內容的數字及文字等頋示部1 0 (參照 圖2)。但，此顯示部10係如有因應鍵端1之裝配處， 設置在PET薄膜2表面及反面，或者鍵端1之頂面都可 以。另，在本實施例2中，關於接著各鍵端1在P E T薄 膜之情形已有例示，但，利用浮雕形成技術來射出形成複 數鍵端於P E T薄膜上也可以。 另，第2薄板層6係對向配置在第1薄板層3之 P E T薄膜2反面，而各突起部5則安置在與鍵端1中央 部對應之位置。又，在本實施例之中，作爲突起部5之材 料係使用環氧樹脂，而其形成方法係將採用對於P E T薄 膜2之印刷塗膜法。但根據由平板印刷及浮雕加工也可形 成同樣的突起部。 另，電路基板9係對向配置在第2薄板層6之PET 薄膜4反面，由使突設在該薄膜4反面之各突起部5與各 間歇開關8之頂面中央部對向，可將任何的間歇開關8按 壓驅動於其上方的突起部5。 (請先閱讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) A4规格（210X297公釐) ~ A7 _B7__ 五、發明説明（g ) 如圖2所示，第1薄板層3與第2薄板層6及電路基 板9係利用軟質之彈性體及比此還髙咖性之合成樹脂所形 成之框體1 1來成爲一體化，有關組裝時，第1薄板層3 之P E T薄膜2周邊部係只將反面塗抹接著劑，然後與框 體接著固定，但，有關第2薄板層6之P ET薄膜4係塗 抹接著劑在包括其週邊部全周正反兩面，再接著固定於框 體1 1與電路基板9之雙方。 經濟部中央樣準局貝工消费合作社印裝 (讀先閱讀背面之注意事項再填寫本頁) 如上述所構成之照光式按鈕開關群係當利用者按壓所 希望的按鈕時，其鍵端1則因按下下方突起部5，所以在 使該鍵端1下降於規定的接觸點時，所因應之間歇開關8 則伴隨著觸感驅動按壓。此時，PET薄膜2，4係局部 彎曲，但除去按壓操作力時，因優起的復原力消解其彎曲 ，所以按壓下之鍵端1及突起部5則迅速地返回原本的高 度位置。另，此照光式按鈕開關群係可將從安裝在電路基 板9上無間歇開關8之領域的複數L E D 7所射出的光， 從反面側照射到擁有光擴散機能的PET薄膜4，所以在 夜間之暗處，如使各LED7發光，而在PET薄膜4所 擴散的光則可大致平均地照射在P E T 2全面。其結果可 將印刷於無色或有色透明薄板1底面之數字及文字等顯示 部1 0充份且均勻地照射，而利用者則可則確地辨視各顯 示部1 0。 並且，此照光式按鈕開關群係作爲介在於鍵端1群與 電路基板9之間的薄板材，因使用低價且極薄之P E T薄 膜，所以實現薄型化與低成本化。 本紙張尺度逋用中國國家橾準（CNS ) A4规格（210X297公釐） ，8 · 388897 A7 B7 五、發明説明（g ) (請先W讀背面之注$項再填寫本頁) 更加地，有關照光式按鈕開關群係組裝於框體1 1成 一體化，但因第2薄板層6之p E T薄膜4係包括其週邊 部全週接著固定正反兩面於框體1與電路基板9之雙方， 所以並不是只有介由PE T薄膜4來固定電路基板9在框 體1 1，而且利用PET薄膜4，也可密閉電路基板9之 電氣電路露出之空間1 2 *進而得到性賴高之防塵防水構 造。 又，上述之實施例之中，作爲第1及第2薄板層3， 6之薄板材，關於使用PET薄膜2，4之情況已說明過 ，但如爲低價格其薄，擁有優越的法線方向復原力之構成 ，使用由其他材料而成之薄板材也可以。另外，鍵端如可 以以無色或有色爲標準且可確保其透光性的構成，利用丙 烯以外之材料來形成也可以。 〔發明之效果〕 * 本發明係以如以上所說明形態實施行，得到記載於以 下之效果。 經濟部中央標準局貝工消费合作社印装 備有透光性之鍵端一體形成於透光性之薄板材表面， 且設置顯示部於前述鍵端之配設處之第1薄板層與，設置 突起部在擁有光擴散機能之透光性薄板材正反兩面，再對 向配置在前述第1薄板層之薄板材反面之第2薄板層與， 對於前述第2薄板層搭載從與前述第1薄板層側相反側照 射光線之光源及接受從前述鍵端之按壓力來進行驅動之開 關元件之電路基板，而當前述突起部各自安置於因應前述 本紙張尺度適用中國國家標丰（CNS ) A4規格（210X297公釐） -9 - 388897 五、發明説明（7 ) 鍵端與前述開關元件之位置所構成時，因可使用P E T等 低價且薄之薄膜在第1及第2薄板層之各薄板材，所以可 提供低價，適合於薄型化之照光式按鈕開關。 另，當第2薄板層爲覆蓋電路基板表面之構成時，因 可以密閉此電路基板之電氣電路霣出空間，所以可實現低 價防塵防水構造》 〔圖面之簡單說明〕 〔圖1〕有關本發明唯一實施例之按鈕開關群之分解 斜視圖。 〔圖2〕表示於圖1之按鈕開關群組裝後之剖面圖〃 〔符號之說明〕 1 鍵端 2 · 4 PET薄膜（薄板材） 3 第1薄板層 ^5 突起部 經濟部中央揉準局i消费合作社印製 6 第2薄板層 7 L E D (光源） 8 間歇開關（開關元件） 9 電路基板 10 顯示部 1 1 框體 -10- (請先Μ讀背面之注f項再填寫本筲) 本紙張尺度適用中國國家揉準（CNS ) A4规格（210X297公釐）There is a problem that it is difficult to promote the reduction in thickness of mobile phones and the like between the terminal and the circuit board. In addition, in the related art, the light of the LED is irradiated to the silicon pad through the opening of the connection layer, which prevents the light from being effectively shielded by the performance layer. Therefore, sufficient brightness cannot be obtained without increasing the number of LEDs. That is, as a light source for illumination, a large number of LEDs are necessary. In addition, since the unit price of the silicon pad member is relatively high, the above-mentioned conventional technology has a high cost problem, which is not conducive to the promotion of lower prices. [Lack of means to solve the problem] The present invention interposes a light diffusion sheet between a light-transmissive sheet integrated with a key end and a circuit board on which a light source and a switching element are mounted, and then sets corresponding keys on the front and back sides of the light diffusion sheet. End and the protruding portion of the switching element. For example, according to the illuminated push-button switch constructed in this way, low-cost and thin films such as PET can be used for each thin plate, so a thin structure that makes the key end very close to the circuit board can be used; 5: At the same time, it also promotes low Cost. [Embodiment of the invention] In the illuminated push-button switch of the present invention, a light-transmitting key end is integrally formed on the surface of a light-transmitting sheet material, and a display portion is provided at the first position of the key-end arrangement. (1) A thin plate is provided with protrusions on both sides of a light-transmitting thin plate having a light diffusing function, and the second thin plate layer disposed on the reverse side of the thin plate of the first thin plate layer is opposite to the second thin plate layer. The basic paper size of the circuit of the switching element that drives the light source and receives the pressing force from the key end from the side opposite to the first sheet layer side applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ) (Please read the note on the back before filling in this page.) -5-5-Printed oxygen A7 B7, Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention Q) board, and the aforementioned protrusions are placed in accordance with their respective The position of the aforementioned key end and the aforementioned switching element. The first thin plate layer may be formed by integrally forming a light-transmitting key end made of acryl or the like on the surface of a light-transmitting thin plate made of P E T or the like according to a bonding and surface forming technique. In addition, the aforementioned display portion is a structure showing the key-end operation contents such as numerals and characters, and can be printed and formed on the bottom or top surface of the corresponding key end or the surface or reverse side of the sheet material of the first sheet layer. In addition, the second thin sheet layer of the front fan is a light diffusing sheet that performs its function. The light diffusing function can be maintained by applying a pear to the sheet surface and using a milky white material. In addition, the protrusions may be formed by self-bulging of the second thin plate layer and thin plate by embossing. However, if epoxy resin or the like is formed on both sides of the thin plate by printing, it is desirable to ensure the protrusions. The hardness and height required by the Ministry. In addition to the above structure, if the second thin plate layer covers the surface of the circuit board, the exposed space of the electrical circuit of the circuit board can be sealed, so that a dust-proof and waterproof structure can be realized at low cost. [Embodiment] As for the embodiment, when it is described with reference to the drawings, FIG. 1 is an exploded perspective view of a key switch group according to an embodiment of the present invention, and FIG. 2 is shown after the push switch group of FIG. 1 is installed. Section view. The illuminated push-button switches shown in circles 1, 2 are ordered by China National Standards (CNS) A4 (210X297 mm) as the paper size of the mobile phone (please read the precautions on the back before filling this page). -6- Printed by A7 B7, Shellfish Consumer Cooperative, Central Standards Bureau, Ministry of Economic Affairs 5. Description of the Invention (4) The composition of the dial, with examples of colorless or colored transparent acrylic key terminals 1 in the vertical and horizontal columns, and then The first thin sheet 餍 3 formed on the surface of the PET film 2 and the second thin sheet layer 6 formed by placing a plurality of colorless or colored transparent protrusions 5 on the front and back sides of the PET film 4 on the surface of the pear field, It is equipped with a plurality of LEDs 7 and a plurality of intermittent switches 8 and connectors (not shown). The circuit board 9 is solder-mounted. The first thin plate layer 3 is printed on the bottom surface of each key end 1 to indicate its appearance. Numbers and characters of the operation contents of the key end 1 are displayed on the display portion 10 (see FIG. 2). However, the display portion 10 may be provided on the surface and the reverse side of the PET film 2 or the top surface of the key end 1 if there is an assembly place corresponding to the key end 1. In the second embodiment, the case where each of the key terminals 1 is on the P E T film has been exemplified. However, it is also possible to use a relief formation technique to inject and form a plurality of key terminals on the P E T film. The second thin plate layer 6 is opposite to the P E T film 2 opposite to the first thin plate layer 3, and each protruding portion 5 is disposed at a position corresponding to the central portion of the key end 1. In this embodiment, epoxy resin is used as the material of the protrusions 5, and the formation method is a printing coating method for the P E T film 2. However, similar projections can be formed by lithography and embossing. In addition, the circuit board 9 faces the reverse side of the PET film 4 disposed on the second sheet layer 6, and the protrusions 5 protruding on the reverse side of the film 4 are opposed to the center of the top surface of each intermittent switch 8. Any of the intermittent switches 8 presses the protrusion 5 driven above it. (Please read the precautions on the back before filling this page) The size of the paper is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) ~ A7 _B7__ V. Description of the invention (g) As shown in Figure 2, the first sheet The layer 3 and the second thin plate layer 6 and the circuit board 9 are integrated by using a frame body 11 made of a soft elastomer and a synthetic resin more than that. In assembly, the first thin plate layer 3 The peripheral part of PET film 2 only applies the adhesive on the reverse side, and then fixes it to the frame. However, the ET film 4 on the second sheet layer 6 is applied on both the front and back sides of the entire periphery, and then It is fixed to both the housing 11 and the circuit board 9. Printed by the Central Laboratories of the Ministry of Economic Affairs, Shellfish Consumer Cooperative (read the precautions on the back, and then fill out this page) The illuminated pushbutton switch group as described above is the key end 1 when the user presses the desired button Since the lower protruding portion 5 is pressed, when the key end 1 is lowered to a predetermined contact point, the corresponding intermittent switch 8 is driven with a tactile sensation. At this time, the PET film 2 and 4 are partially bent, but when the pressing operation force is removed, the bending force is eliminated by the superior restoring force, so the pressed key end 1 and the protruding portion 5 return to the original high position quickly. In addition, this illuminated push-button switch system can illuminate the light emitted from the plurality of LEDs 7 mounted on the circuit board 9 in the area without the intermittent switch 8 from the reverse side to the PET film 4 having a light diffusing function, so at night In the dark place, if each LED 7 is made to emit light, the light diffused in the PET film 4 can be irradiated on the entire surface of the PET 2 approximately evenly. As a result, the display portions 10 such as numbers and characters printed on the bottom surface of the colorless or colored transparent sheet 1 can be fully and uniformly irradiated, and the user can surely recognize each display portion 10. In addition, this illuminated push-button switch system is a thin plate interposed between the key terminal group 1 and the circuit board 9, and uses a low-priced and extremely thin P E T film, thereby achieving a reduction in thickness and cost. This paper uses China National Standards (CNS) A4 (210X297 mm), 8 · 388897 A7 B7. 5. Description of the invention (g) (please read the note on the back before filling this page). The illuminated push button switch system is integrated into the frame body 11, but the p ET film 4 of the second thin plate layer 6 includes the entire periphery of the peripheral part, and then the front and back sides are fixed to the frame body 1 and the circuit board 9 Both sides, so it is not only the circuit board 9 that is fixed to the frame 1 1 through the PET film 4, but also the PET film 4 can also be used to seal the space 1 2 where the electrical circuit of the circuit board 9 is exposed. Dust- and water-resistant construction. Moreover, in the above-mentioned embodiment, as the sheet material of the first and second sheet layers 3 and 6, the case of using the PET film 2, 4 has been explained, but if it is low in price, it has a thin normal and has an excellent normal. The direction restoring force may be made of a thin plate made of other materials. In addition, the bond end may have a structure that is colorless or colored as a standard and can ensure its light transmittance, and may be formed using a material other than propylene. [Effects of the invention] * The present invention is implemented as described above, and the following effects are obtained. The Central Standard Bureau of the Ministry of Economic Affairs, the Shellfish Consumer Cooperative, is equipped with a translucent key end integrally formed on the surface of the translucent sheet, and a display section is provided on the first sheet layer of the aforementioned key end arrangement and is provided with a protrusion. The front and back sides of the light-transmitting sheet material having a light diffusing function are arranged opposite to the second sheet layer disposed on the reverse side of the sheet material of the first sheet layer, and the second sheet layer is mounted from the first sheet. The light source that irradiates light on the opposite side of the layer side and the circuit board that receives the switching element driven by the pressing force from the key end, and when the protrusions are respectively placed in accordance with the aforementioned paper size, China National Standards (CNS) A4 specifications apply (210X297 mm) -9-388897 V. Description of the invention (7) When the positions of the key end and the aforementioned switching element are formed, low-cost and thin films such as PET can be used in each of the first and second sheet layers. Plate, so it can be provided at a low price, which is suitable for a thin, illuminated push button switch. In addition, when the second thin plate layer is configured to cover the surface of the circuit board, since the electrical circuit space of the circuit board can be sealed, a low-cost dust-proof and waterproof structure can be realized. [Simplified description of the drawing] [Figure 1] Related An exploded perspective view of the push button switch group of the only embodiment of the present invention. [Fig. 2] Cross-section view of the push-button switch group shown in Fig. 1 [Description of symbols] 1 Key end 2 · 4 PET film (thin sheet) 3 First sheet layer ^ 5 Protruding part Center of the Ministry of Economy Printed by Bureau i Consumer Cooperatives 6 Second sheet layer 7 LED (light source) 8 Intermittent switch (switching element) 9 Circuit board 10 Display section 1 1 Frame -10- (Please read the note f on the back before filling in this card. ) This paper size is applicable to China National Standard (CNS) A4 (210X297 mm)