200926249 九、發明說明 【發明所屬之技術領域】 本發明關於內裝有冷陰極螢光管之冷陰極螢光燈，更 詳細而言，關於確保與以往的螢光燈相同的使用自由度及 光量’且即使在低溫下使用也不會有壽命降低之冷陰極螢 光燈。 φ 【先前技術】 冷陰極螢光管，因在電極不具有細絲，所以具有可管 徑可成爲極細者的特長。又，可承受閃爍點燈，故壽命也 長’且，構造或點燈電路的結構也比較簡單，因此具有可 達到低成本之特長。因此，多數使用於收容空間有限且對 購買者而言不需要更換爲前提之液晶顯示器的背光等。另 外’由後記的理由得知，作爲一般的照明器具用並未普及 ’但’在具有透過性之框體內配設有光源之建築物內的誘 Ο 導燈或電飾招牌’使用冷陰極螢光管作爲光源（專利文獻 1 ) ° 一般，冷陰極螢光管之對被裝設側裝置的裝設，因對 購買者而言’不以自己更換爲前提，故，藉由將燈之兩端 的電極線焊接於電源側的導體來進行（專利文獻2 )。 [專利文獻1]日本特開2002-202738號公報 [專利文獻2]日本特開2002-324592號公報 [專利文獻3]日本特開平i〇_189259號公報 [專利文獻4]日本特開2000-313279號公報 -5- 200926249 【發明內容】 [發明所欲解決之課題] 然而，冷陰極螢光管比起以往的熱陰極螢光燈（以下 僅略稱爲「螢光燈」），具有在低溫，輝度或壽命減少的 特性，特是在使用於屋外用之器具的情況，會有因外氣溫 度降低，導致輝度降低，無法獲得充分的照明效果之情況 @ 。又，關於使用壽命，即使非爲零下溫度，當周圍溫度成 爲10°c以下時，則使用壽命會極端地變短。在此情況，爲 了防止冷陰極螢光管在低溫下性能降低，而提案有附加低 溫時動作保證電路之發明（專利文獻3)，或使用加熱器 之發明（專利文獻4)，但，會有構造變得複雜，也變高 之問題產生。 又，例如液晶顯示器般，在工廠或作業場所進行裝設 、更換的光源，使用冷陰極螢光管之情況，在前述的裝設 〇 構造上不會產生任何缺失，但，作爲在現場之施行或更換 作業多之屋外用之誘導燈或電飾招牌的光源，使用冷陰極 螢光管之情況，以這樣的裝設構造會產生缺失。即，由於 經由焊接，無法以單觸控來裝設、更換螢光管，現場的作 業效率顯著變差。又，冷陰極螢光管，多數以直徑未滿 1 cm之玻璃管來構成，在呈長條狀之情況，在進行裝設、 更換作業之際，必須充分地注意不會受到折損，因此仍會 顯著地有損在現場之作業效率。 另外，作爲冷陰極螢光管之裝設構造，容易聯想到， -6 - 200926249 將由口環突設的燈銷插入至燈插座之一般的螢光燈所採用 的形式，但，在想定爲一般人進行處理之情況時，因冷陰 極螢光管驅動的電壓高，所以必須考量，洩漏電流檢測電 路或聯鎖（interlock)電路等之感電事故的防止對策。 根據以上的理由，就算有前述的特長，將冷陰極螢光 管使用於一般的照明器具之嘗試並非一般容易。 Q [用以解決課題之手段] 本發明是爲了解決上述問題而開發完成之發明，其目 的在於提供可解決以上的問題點之冷陰極螢光燈。即，請 求項1所記載的冷陰極螢光管，是在筒狀的燈罩內收容有 複數支的冷陰極螢光管與變頻裝置，藉由在燈罩的兩端， 設有用來插入至燈插座並導通之口環及燈銷，經由燈銷， 對由變頻裝置與冷陰極螢光管所構成的點燈電路供給電力 。又，在此冷陰極螢光燈，複數支的冷陰極螢光管是以在 〇 燈罩內相互地排列於横向的方式，並列地配置，且，在冷 陰極螢光管彼此之間設置空間，將變頻裝置收容於此空間 〇 請求項2所記載的發明，是著眼於在光量的確保及使 用環境，與一般的螢光燈之互換性者，如前述請求項i所 記載的冷陰極螢光燈，其中，在由螢光燈用玻璃管或塑膠 樹脂管所構成的管徑15.5mm〜32.5mm之燈罩內，收容有 2支的冷陰極螢光管。 請求項3所記載的發明，是著眼於變頻裝置之具體的 200926249 收容手段，如前述請求項1或2所記載的冷陰極營光燈’ 其中，具有複數個橋接構件，其在中央設有可供變頻裝置 插通之變頻器支承孔，並且在前述變頻器支承孔的外側以 與冷陰極螢光管彼此之間隔一致的方式設有複數個螢光管 插通孔，藉由將各冷陰極螢光管插通於前述橋接構件’來 將冷陰極螢光管彼此結合’並且藉由將變頻裝置掛架於前 述各橋接構件間，來支承於冷陰極螢光管彼此之間。 φ 請求項4所記載的發明’是如前述請求項1至3中任 一項所記載的冷陰極螢光燈，其中，對變頻裝置實施淡色 的塗佈，來提高來自於冷陰極螢光管之照明光的反射效率 〇 請求項5所記載的發明，是如前述請求項1至4中任 一項所記載的冷陰極螢光燈，其中，將由螢光燈用玻璃管 所構成的燈罩做成光透過率爲90%以上的無光澤（frost) 狀，來以燈罩的管壁將來自於冷陰極螢光管之照明光予以 Q 散亂反射。 請求項6所記載的發明，是如前述請求項1至4中任 一項所記載的冷陰極螢光燈，其中，將由塑膠樹脂管所構 成的燈罩做成光透過率爲90%以上的半透明狀，使得來自 於冷陰極螢光管之照明光藉由折射來擴散。 [發明效果] 若本發明的話，因以封入冷陰極螢光管之燈罩內的空 氣作爲熱媒體，藉由熱媒體，使冷陰極螢光管之陰極附近 -8 - 200926249 的一部分發熱擴散至燈全體，藉此使冷陰極螢光管之表面 全面溫度提高’所以，即使在外氣溫度降低之情況，也能 將燈罩內的環境溫度保持於1(TC以上，冷陰極螢光管之表 面溫度可與外氣溫度相同地不會降低，在與以往的螢光燈 相同的使用溫度範圍下，輝度也不會降低，可達到長壽命 〇 其次，若根據本發明的話，因冷陰極螢光管被收容於 φ 筒狀的燈罩內，將兩端的燈銷插入至一對的燈插座加以裝 設，所以，在進行連接不需要使用焊接，即使一般的使用 者，也能與一般的螢光燈同樣地進行更換。在此情況，藉 由將用來驅動冷陰極螢光管的變頻器內裝於燈內，對燈， 僅供給一般的商用電源或低壓的直流電源，即使使用與以 往的照明器具相同的燈插座等，也可保障使用者的安全。 另外，在將變頻器收容於燈罩內之情況，會有在進行 點燈時，產生變頻器的影子之虞。將變頻器收容於收容有 〇 螢光管之燈罩內，在電球型螢光燈之領域中爲習知者。但 ，在這種的螢光燈，照明光被分佈於與口環相對向的方向 ，並且因口環本身也爲電球用之大型者，所以，變頻器的 大部分可退避至口環附近，變得不需要考量前述的影子問 題之技術的必然性。相對於此，在將變頻器收納於與通常 的螢光燈相同之燈罩內的情況時，無法取得這樣的退避手 段，在本發明成爲特有的技術性課題。 針對此問題，在本發明，因將複數支的冷陰極螢光管 以相互排列於橫方向的方式配置於燈罩內，且，在冷陰極 -9- 200926249 螢光管彼此之間設置空間，將變頻裝置收容於此空間，所 以變頻裝置原位於死空間之冷陰極螢光管彼此之間，可將 因變頻裝置所產生的影子之影響抑制在最小限度。又，將 複數支的冷陰極螢光管收容於燈罩內，亦有助於確保相當 於相同尺寸的1支螢光燈之光量，可產生影子之防止與光 量的確保之複合作用。 且，若根據請求項4所記載的發明的話，因藉由對變 0 頻裝置實施淡色的塗装來提高反射效率，所以，即使來自 於冷陰極螢光管之照明光受到變頻裝置所遮斷，也會對其 反射並加以照射，所以，可將因變頻裝置所造成之影子之 影響抑制於最小限度。再者，此效果的詳細內容如後述的 發明方式所記載。 又，若根據請求項5所記載的發明的話，因藉由將由 螢光燈用玻璃管所構成的燈罩做成光透過率爲90 %以上的 無光澤狀，來以燈罩的管壁，將來自於冷陰極螢光管之照 Q 明光散亂反射，所以’可將因變頻裝置所造成之影子之影 響抑制於最小限度。 又，若根據請求項6所記載的發明的話，因藉由將由 塑膠樹脂管所構成的燈罩做成爲光透過率爲90%以上的半 透明狀，以折射，使來自於冷陰極螢光管之照明光擴散’ 所以，可將因變頻裝置所造成之影子之影響抑制於最小限 度。 其次，若根據請求項3所記載的發明的話’將變頻裝 置橋接於供各冷陰極螢光管插通之複數個橋接構件間’這 -10- 200926249 是意味著’各冷陰極螢光管同時被橋接構件所結合而成集 合體化’加上收容變頻裝置，藉由集合體化，亦會產生使 各冷陰極螢光管對外部衝撃之強度提升的複合作用。 具有以上的作用、效果的本發明之冷陰極螢光燈，從 商業性觀點來看’第1，藉由將用來驅動冷陰極螢光管之 變頻器內裝於燈內，使得不需要另外在照明器具內安裝穩 定器與輝光起動器或變頻器等的燈點燈用之其他零件與對 Q 這些零件之配線，可達到節構件單、緊緻、廉價的照明器 具。第2’因與以往的螢光燈呈相同形狀，又，—般的商 用電源或低壓的直流電源即可，所以，器具的本體與燈插 座可使用既存之物，容易加以製品化。 【實施方式】 以下，根據圖面，說明關於本發明之具體實施例。圖 1是顯示本發明之冷陰極螢光燈1全體結構之一部分切開 〇 的斜視圖。圖中之符號2爲燈罩，在內部收容有複數支的 冷陰極螢光管3。在這個實施例，收容有2支冷陰極螢光 管，但支本數不限於此。 圖8是顯示冷陰極螢光燈1的組裝構造之圖。圖中的 符號4爲用來將上述的冷陰極螢光管3保持於燈罩2內之 口環，藉由塑膠等的絕緣材料所構成。此口環4爲在由兩 側夾持著冷陰極螢光管3之狀態下，安裝於燈罩2的兩端 ，在裏面側，設有供燈罩的端部嵌入用之環狀溝6與用來 供冷陰極螢光管之端部嵌的保持孔5。在口環4的表面側 -11 - 200926249 ，突設有用來插通於燈插座並導通之燈銷7，此燈銷連接 於冷陰極螢光管之點燈電路。圖10爲此點燈電路的方塊 圖。在此電路，燈銷7連接於變頻裝置10，此變頻裝置用 來驅動連接於該不爲之冷陰極螢光管3。 前述的冷陰極螢光管3，是以在燈罩1內相互地排列 於橫向的方式並列配置，且，在冷陰極螢光管彼此之間設 置空間，將變頻裝置收容於此空間。圖中的符號10爲變 Q 頻裝置，在基板11安裝有輸出變壓器12、電容13、抗流 線圈1 4等的零件。 圖中的符號20爲用來將前述的變頻裝置10支承於冷 陰極螢光管彼此之間的橋接構件，在此，藉由塑膠等的絕 緣材料所構成。此橋接構件20，在中央設有可供變頻裝置 1〇插通之變頻器支承孔21，並且在前述變頻器支承孔的 外側’以與冷陰極螢光管3彼此之間隔一致的方式設有複 數個螢光管插通孔23來構成的（參照圖5〜7)。此橋接 〇 構件20至少準備2個，藉由將各冷陰極螢光管3插通於 螢光管插通孔23，來將冷陰極螢光管彼此結合，並且藉由 橋接於隔著間隔所配置的各橋接構件之承接部分22間， 來支承變頻裝置10。 再者，雖未圖示，前述的橋接構件20，其外周的一部 分亦可抵接於燈罩1的內壁面，在該情況，藉由橋接構件 所結合而被集合體化之各冷陰極螢光管3也與燈罩一同一 體化，可更進一步提高強度。 前述的燈罩2爲由玻璃或樹脂所構成之圓筒形者，例 -12- 200926249 如由螢光燈用玻璃管或塑膠樹脂管所構成，在此，收容2 支的冷陰極螢光管3。在此情況，當將冷陰極螢光管3收 容於燈罩2內之際，需要其內周壁與螢光管外周壁之間設 置適度的空隙。此空隙爲用來在燈罩與螢光管外周壁之間 確保空氣者。此空氣是作爲熱媒體來發揮作用，使來自於 冷陰極螢光管之部分的發熱擴散至冷陰極螢光燈全體’來 將冷陰極螢光管全面之表面溫度提高者。因此，若空隙窄 φ 、空氣量過少’或相反地空隙廣、空氣量過大，作爲熱媒 體也不會發揮功能，所以，爲了能作爲熱媒體來發揮功能 ，必須設定燈罩內徑燈外徑之尺寸。在此實施例，藉由對 外徑 3_0〜6_0mm、全長 400〜1200mm、燈電流 8.0〜 1 5.0mA之 2支的冷陰極螢光管，使用管徑 15.5mm〜 32.5mm (厚度1.0〜1.5 mm)之鈉玻璃製或聚碳酸酯製的 燈罩，來達到前述作用。 如前述，在本發明，藉由使變頻裝置位於原本死空間 φ 之冷陰極螢光管彼此之間，可將因變頻裝置所造成之影子 之影響抑制於最小限度，但，在此實施例，爲了更進一步 減少影響，可採用下述的各手段。首先，在此，藉由對變 頻裝置10實施例如白色等的淡色的塗装，來提高反射效 率。藉此’如圖9所示，即使來自於上下的冷陰極螢光管 3、3之照明光受到變頻裝置i 〇所遮斷，也會對其反射而 照射’所以，可將因變頻裝置所造成之影子之影響抑制於 最小限度。即’在圖中，由上方的冷陰極螢光管3朝下方 之照明光受到變頻裝置1 0所遮斷，但在其上面反射，而 -13- 200926249 朝上方的χ、χ方向照射。另外，由下方的冷陰極螢光管 3朝上方之照明光受到變頻裝置1 〇所遮斷，但，在其下面 反射而朝下方的Y、Y方向照射。在此情況，因朝上方的 X、X方向之照射，是相當於不存在有變頻裝置1〇之情況 時的來自於下方的冷陰極螢光管3之照射，朝下方的Y、 Y方向之照射，是不存在有變頻裝置10之情況時的來自 於上方的冷陰極螢光管3之照射，所以，結果可將影子之 Φ 影響抑制於最小限度。 再者，雖未圖示，亦可藉由對因在基板上11安裝零 件使得表面形狀成爲不規則之變頻裝置10的上面實施被 覆，使來自於冷陰極螢光管3之照明光容易反射在該表面 0 其次，在此使用螢光燈用玻璃管作爲燈罩2之情況， 將其做成爲光透過率爲90%以上的無光澤狀。藉此，因來 自於冷陰極螢光管3之照明光的一部分，會被玻璃管之內 φ 壁面所散亂反射後，透過並照射至外部，所以，在外觀上 ，變得不易看見變頻裝置之影子。 又，在此，使用聚碳酸酯等的塑膠樹脂管作爲燈罩2 之情況，做成爲光透過率爲90%以上的半透明狀。藉此， 因透過燈罩之來自於冷陰極螢光管3的照明光會因折射而 擴散’並照射至外部，所以，在外觀上，變得不易看見變 頻裝置之影子。 【圖式簡單說明】 -14 - 200926249 圖1是本發明之冷陰極螢光燈的一部分切開之斜視圖 〇 圖2是同上，取下燈罩及口環之狀態的平面圖。 圖3是同上，取下燈罩及口環之狀態的底面圖。 圖4是同上，取下燈罩及口環之狀態的正面圖。 圖5是同上，取下燈罩及口環之狀態的左側面圖。 圖6是同上，取下燈罩及口環之狀態的右側面圖。 〇 圖7是同上，取下燈罩及口環之狀態的圖4的A-A線 端面圖。 圖8是本發明之冷陰極螢光燈之口環附近的斷面圖。 圖9是顯示本發明之冷陰極螢光燈之作用的省略一部 分之斷面圖。 圖10是本發明之冷陰極螢光燈之點燈電路的方塊圖 〇 © 【主要元件符號說明】 1 :冷陰極螢光燈 2 :燈罩 3 :冷陰極螢光管 4 : 口環 7 :燈銷 1〇 :變頻裝置 2〇 :橋接構件 -15-200926249 IX. Description of the Invention [Technical Field] The present invention relates to a cold cathode fluorescent lamp incorporating a cold cathode fluorescent tube, and more particularly to ensuring the same degree of freedom of use and amount of light as conventional fluorescent lamps. 'And there is no cold cathode fluorescent lamp with a reduced lifetime even when used at low temperatures. φ [Prior Art] Since the cold cathode fluorescent tube does not have a filament, the electrode has a feature that the tube diameter can be extremely fine. Moreover, since it can withstand flashing light, the life is also long, and the structure of the structure or the lighting circuit is relatively simple, so that it has the advantage of being low-cost. Therefore, most of them are used in backlights of liquid crystal displays that have limited storage space and do not need to be replaced by the purchaser. In addition, it is known from the reason of the postscript that it is not popular as a general lighting fixture. However, the lure in the building with a light source in the transparent frame or the electric signboard 'Use cold cathode firefly' The light pipe is used as a light source (Patent Document 1) ° Generally, the installation of the side device of the cold cathode fluorescent tube is not necessary for the purchaser to replace it, so by the two lamps The electrode wire at the end is welded to the conductor on the power supply side (Patent Document 2). [Patent Document 1] JP-A-2002-324592 (Patent Document 3) Japanese Laid-Open Patent Publication No. Hei-189259 (Patent Document 4) JP-A-2000- [Announcement] [Problem to be Solved by the Invention] However, the cold cathode fluorescent tube has a higher thermal cathode fluorescent lamp than the conventional hot cathode fluorescent lamp (hereinafter simply referred to as "fluorescent lamp"). The characteristics of low temperature, brightness, or reduced life, especially in the case of appliances used outdoors, may cause a decrease in luminance due to a decrease in outside air temperature, and a sufficient illumination effect may not be obtained. Further, regarding the service life, even if the temperature is not zero, when the ambient temperature becomes 10 ° C or less, the service life is extremely shortened. In this case, in order to prevent the performance of the cold cathode fluorescent tube from degrading at a low temperature, an invention of an operation guarantee circuit for adding a low temperature (Patent Document 3) or an invention using a heater (Patent Document 4) is proposed. The problem that the structure becomes complicated and becomes high is also generated. Further, in the case of a liquid crystal display, for example, when a cold cathode fluorescent tube is used as a light source that is installed or replaced in a factory or a work place, there is no loss in the above-described mounting structure, but it is performed on site. In the case of replacing the light source of the induction lamp or the electric signboard used outside the house, the use of the cold cathode fluorescent tube may cause a defect in such a mounting structure. That is, since the fluorescent tube cannot be mounted and replaced with a single touch by soldering, the work efficiency at the site is remarkably deteriorated. In addition, most of the cold cathode fluorescent tubes are made of glass tubes having a diameter of less than 1 cm. In the case of a long strip, it is necessary to pay sufficient attention to the fact that they are not damaged when they are installed or replaced. Will significantly detract from the efficiency of the work on site. In addition, as a mounting structure of a cold cathode fluorescent tube, it is easy to associate with the form of a general fluorescent lamp in which a lamp pin protruding from a mouth ring is inserted into a lamp socket, but it is considered to be an ordinary person. In the case of processing, since the voltage driven by the cold cathode fluorescent tube is high, it is necessary to take measures against the occurrence of electric shock accidents such as a leakage current detecting circuit or an interlock circuit. For the above reasons, even with the above-described advantages, attempts to use a cold cathode fluorescent tube for a general lighting fixture are not generally easy. Q [Means for Solving the Problem] The present invention has been developed to solve the above problems, and an object of the invention is to provide a cold cathode fluorescent lamp which can solve the above problems. In other words, in the cold cathode fluorescent tube according to claim 1, the plurality of cold cathode fluorescent tubes and the inverter device are housed in the cylindrical lamp cover, and are provided at the both ends of the lamp cover for insertion into the lamp socket. The conduction ring and the lamp pin supply electric power to the lighting circuit composed of the inverter device and the cold cathode fluorescent tube via the lamp pin. Further, in the cold cathode fluorescent lamp, a plurality of cold cathode fluorescent tubes are arranged side by side in the lateral direction in the xenon lamp cover, and a space is provided between the cold cathode fluorescent tubes. In the invention described in the second aspect of the present invention, the invention relates to a cold cathode fluorescent light as described in the above-mentioned claim i, in consideration of compatibility with a general fluorescent lamp in consideration of the amount of light and the environment in which it is used. In the lampshade, a cold cathode fluorescent tube having two diameters of 15.5 mm to 32.5 mm, which is composed of a glass tube for a fluorescent lamp or a plastic resin tube, is housed. The invention described in claim 3 is a specific cold-cavity light-storing device according to the above-mentioned claim 1 or 2, which has a plurality of bridging members, which are provided at the center. a frequency converter supporting hole through which the inverter device is inserted, and a plurality of fluorescent tube insertion holes are provided on the outer side of the inverter supporting hole so as to be spaced apart from the cold cathode fluorescent tubes by the cold cathodes The fluorescent tubes are inserted into the bridging members 'to bond the cold cathode fluorescent tubes to each other' and are supported between the cold cathode fluorescent tubes by arranging the frequency conversion devices between the respective bridging members. The cold cathode fluorescent lamp according to any one of claims 1 to 3, wherein the inverter device is applied in a pale color to improve the cold cathode fluorescent tube. The cold cathode fluorescent lamp according to any one of the above claims 1 to 4, wherein the lampshade comprising the glass tube for a fluorescent lamp is made of the fluorescent lamp. The light transmittance of the light transmittance is 90% or more, and the illumination light from the cold cathode fluorescent tube is scattered and reflected by Q on the wall of the lamp cover. The cold cathode fluorescent lamp according to any one of claims 1 to 4, wherein the lamp cover made of a plastic resin tube has a light transmittance of 90% or more. Transparent, the illumination light from the cold cathode fluorescent tube is diffused by refraction. [Effect of the Invention] According to the present invention, a part of the vicinity of the cathode of the cold cathode fluorescent tube -8 - 200926249 is diffused to the lamp by the heat medium by using the air enclosed in the lamp cover of the cold cathode fluorescent tube as a heat medium. As a whole, the overall temperature of the surface of the cold cathode fluorescent tube is increased. Therefore, even when the temperature of the external air is lowered, the ambient temperature in the lamp cover can be maintained at 1 (TC or higher, and the surface temperature of the cold cathode fluorescent tube can be maintained. It does not decrease in the same temperature as the outside air temperature, and the luminance does not decrease in the same operating temperature range as in the conventional fluorescent lamp, and the long life can be achieved. Secondly, according to the present invention, the cold cathode fluorescent tube is It is housed in a φ cylindrical lampshade, and the lamp pins at both ends are inserted into a pair of lamp sockets. Therefore, it is not necessary to use soldering for connection, even for ordinary users, it can be the same as a general fluorescent lamp. Replace the ground. In this case, by installing the inverter for driving the cold cathode fluorescent tube in the lamp, the lamp is only for general commercial power supply or low voltage DC power supply, even if It is also possible to protect the safety of the user by using the same lamp socket as the conventional lighting fixture. In addition, when the inverter is housed in the lampshade, there is a shadow of the inverter when lighting is performed. The frequency converter is housed in a lamp housing in which a fluorescent tube is housed, and is known in the field of a ball type fluorescent lamp. However, in such a fluorescent lamp, illumination light is distributed in a direction opposite to the mouth ring. Because the ring itself is also a large one for the electric ball, most of the inverter can be retracted to the vicinity of the mouth ring, and it becomes unnecessary to consider the technical necessity of the aforementioned shadow problem. In contrast, the inverter is used. In the case where it is housed in the same lampshade as a normal fluorescent lamp, such a retracting means cannot be obtained, and this invention becomes a peculiar technical problem. In response to this problem, in the present invention, a plurality of cold cathode fluorescent lamps are used. The tubes are arranged in the shade in such a manner that they are arranged in the horizontal direction, and a space is provided between the cold cathodes of the cold cathodes -9-200926249, and the inverter device is housed in the space. The cold cathode fluorescent tubes in the dead space can minimize the influence of the shadow generated by the inverter device. Moreover, it is also helpful to ensure that a plurality of cold cathode fluorescent tubes are housed in the lamp cover. The amount of light corresponding to one fluorescent lamp of the same size can be combined with the prevention of the amount of light. In addition, according to the invention described in claim 4, the light-emitting device is light-colored by the variable-frequency device. Since the coating is used to improve the reflection efficiency, even if the illumination light from the cold cathode fluorescent tube is blocked by the inverter device, it is reflected and irradiated, so that the influence of the shadow caused by the inverter device can be suppressed. In addition, the details of the effect are as described in the invention mode described below. According to the invention described in the claim 5, the light cover formed by the glass tube for a fluorescent lamp is made to transmit light. The rate is 90% or more, and the light from the tube wall of the lampshade is scattered and reflected from the cold cathode fluorescent tube, so it can be affected by the frequency conversion device. The inhibiting influence to a minimum. According to the invention of claim 6, the lampshade formed of the plastic resin tube has a semitransparent shape having a light transmittance of 90% or more, and is refracted to be used from the cold cathode fluorescent tube. Illumination light diffusion' Therefore, the influence of the shadow caused by the inverter device can be minimized. Next, according to the invention described in claim 3, 'the inverter device is bridged between a plurality of bridge members through which the cold cathode fluorescent tubes are inserted'. --10-200926249 means that each cold cathode fluorescent tube is simultaneously The combination of the bridging members and the assembly of the variable frequency device, together with the integration of the inverter, also produces a composite effect of increasing the strength of the external cold cathode fluorescent tubes. The cold cathode fluorescent lamp of the present invention having the above effects and effects is, from a commercial point of view, the first one, by incorporating the frequency converter for driving the cold cathode fluorescent tube into the lamp, so that no additional Install a stabilizer, a glow light starter, a light-emitting starter, or other parts for lamp lighting, such as a glow lighter, or a wiring for these parts, to achieve a single, compact, and inexpensive lighting fixture. The second ''s shape is the same as that of the conventional fluorescent lamp, and the general commercial power supply or the low-voltage DC power supply is sufficient. Therefore, the main body of the appliance and the lamp socket can be easily used as products. [Embodiment] Hereinafter, specific embodiments of the present invention will be described based on the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a portion of a whole structure of a cold cathode fluorescent lamp 1 of the present invention. Reference numeral 2 in the figure is a lamp cover in which a plurality of cold cathode fluorescent tubes 3 are housed. In this embodiment, two cold cathode fluorescent tubes are housed, but the number of branches is not limited thereto. FIG. 8 is a view showing an assembled structure of the cold cathode fluorescent lamp 1. Reference numeral 4 in the figure is a ring for holding the above-described cold cathode fluorescent tube 3 in the globe 2, and is made of an insulating material such as plastic. The mouth ring 4 is attached to both ends of the globe 2 in a state in which the cold cathode fluorescent tubes 3 are sandwiched by the both sides, and the annular groove 6 for embedding the end portions of the lamp cover is provided on the inner side. A retaining hole 5 is provided for the end of the cold cathode fluorescent tube. On the surface side -11 - 200926249 of the mouth ring 4, a lamp pin 7 for inserting through the lamp socket and conducting is protruded, and the lamp pin is connected to a lighting circuit of the cold cathode fluorescent tube. Figure 10 is a block diagram of the lighting circuit for this purpose. In this circuit, the lamp pin 7 is connected to the inverter unit 10, and the inverter unit is used to drive the cold cathode fluorescent tube 3 connected thereto. The cold cathode fluorescent tubes 3 described above are arranged side by side in the horizontal direction in the globe 1, and a space is provided between the cold cathode fluorescent tubes to accommodate the inverter device in the space. Reference numeral 10 in the figure is a variable Q frequency device, and components such as an output transformer 12, a capacitor 13, and a choke coil 14 are attached to the substrate 11. Reference numeral 20 in the figure is a bridge member for supporting the above-described inverter device 10 between the cold cathode fluorescent tubes, and is constituted by an insulating material such as plastic. The bridging member 20 is provided at the center with a frequency converter supporting hole 21 through which the inverter device 1 is inserted, and is provided on the outer side of the inverter supporting hole so as to be spaced apart from the cold cathode fluorescent tubes 3 A plurality of fluorescent tubes are inserted through the through holes 23 (see FIGS. 5 to 7). At least two of the bridging members 20 are prepared, and the cold cathode fluorescent tubes 3 are inserted into the fluorescent tube insertion holes 23 to bond the cold cathode fluorescent tubes to each other and bridged by the spacers. The receiving portion 22 of each of the bridging members is disposed to support the inverter device 10. Further, although not shown, a part of the outer periphery of the bridge member 20 may be in contact with the inner wall surface of the globe 1, in which case each cold cathode fluorescent light that is integrated by the bridging member is integrated. The tube 3 is also integrated with the lampshade to further increase the strength. The above-mentioned lampshade 2 is a cylindrical body made of glass or resin. For example, -12-200926249 is composed of a glass tube for fluorescent lamps or a plastic resin tube, and here, two cold cathode fluorescent tubes 3 are accommodated. . In this case, when the cold cathode fluorescent tube 3 is housed in the globe 2, it is necessary to provide a proper gap between the inner peripheral wall and the outer peripheral wall of the fluorescent tube. This gap is used to ensure air between the lamp cover and the outer peripheral wall of the fluorescent tube. This air acts as a heat medium to diffuse heat from the portion of the cold cathode fluorescent tube to the entire cold cathode fluorescent lamp to improve the surface temperature of the cold cathode fluorescent tube. Therefore, if the gap is narrow φ and the amount of air is too small, or conversely, the gap is wide and the amount of air is too large, it does not function as a heat medium. Therefore, in order to function as a heat medium, it is necessary to set the outer diameter of the lamp inner diameter lamp. size. In this embodiment, a cold cathode fluorescent tube having an outer diameter of 3_0 to 6_0 mm, a total length of 400 to 1200 mm, and a lamp current of 8.0 to 1 5.0 mA is used, and a diameter of 15.5 mm to 32.5 mm (thickness: 1.0 to 1.5 mm) is used. The lampshade or polycarbonate lampshade is used to achieve the aforementioned effects. As described above, in the present invention, the influence of the shadow caused by the inverter device can be minimized by placing the inverter device between the cold cathode fluorescent tubes of the original dead space φ, but in this embodiment, In order to further reduce the impact, the following means can be employed. First, here, the frequency conversion device 10 is coated with a pale color such as white to improve the reflection efficiency. Therefore, as shown in FIG. 9, even if the illumination light from the upper and lower cold cathode fluorescent tubes 3 and 3 is blocked by the inverter i 〇, it is reflected and irradiated, so that the inverter device can be used. The effects of the shadows are suppressed to a minimum. That is, in the figure, the illumination light directed downward from the upper cold cathode fluorescent tube 3 is blocked by the inverter device 10, but is reflected thereon, and -13-200926249 is irradiated upward in the direction of χ and χ. Further, the illumination light upward from the lower cold cathode fluorescent tube 3 is blocked by the inverter device 1 ,, but is reflected on the lower surface thereof and irradiated in the Y and Y directions below. In this case, the irradiation in the X and X directions toward the upper side corresponds to the irradiation of the cold cathode fluorescent tube 3 from the lower side when the inverter device 1 is not present, and the Y and Y directions are downward. Irradiation is the irradiation of the cold cathode fluorescent tube 3 from the upper side in the case where the inverter device 10 is not present, and as a result, the influence of the shadow Φ can be minimized. Further, although not shown, the illumination light from the cold cathode fluorescent tube 3 can be easily reflected by coating the upper surface of the inverter device 10 in which the surface shape is irregular due to the mounting of the components on the substrate 11. This surface 0 is a case where a glass tube for a fluorescent lamp is used as the cover 2, and this is made into a matte shape having a light transmittance of 90% or more. As a result, a part of the illumination light from the cold cathode fluorescent tube 3 is scattered by the φ wall surface in the glass tube, and is transmitted and irradiated to the outside. Therefore, it is difficult to see the inverter device in appearance. The shadow. Here, in the case where a plastic resin tube such as polycarbonate is used as the globe 2, a translucent shape having a light transmittance of 90% or more is obtained. As a result, the illumination light from the cold cathode fluorescent tube 3 that has passed through the lamp cover is diffused by the refracting and is radiated to the outside, so that the appearance of the frequency conversion device is less likely to be seen. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a part of a cold cathode fluorescent lamp according to the present invention. Fig. 2 is a plan view showing the state in which the lamp cover and the mouth ring are removed. Fig. 3 is a bottom plan view showing the state in which the lamp cover and the mouth ring are removed, as in the above. Fig. 4 is a front elevational view showing the state in which the lamp cover and the mouth ring are removed, as in the above. Fig. 5 is a left side view showing the state in which the lamp cover and the mouth ring are removed, as in the above. Fig. 6 is a right side view showing the state in which the lamp cover and the mouth ring are removed, as in the above. 〇 Fig. 7 is a side elevational view taken along line A-A of Fig. 4 showing the state in which the lamp cover and the mouth ring are removed. Figure 8 is a cross-sectional view showing the vicinity of a mouth ring of a cold cathode fluorescent lamp of the present invention. Fig. 9 is a cross-sectional view showing an abbreviated part of the action of the cold cathode fluorescent lamp of the present invention. Figure 10 is a block diagram of the lighting circuit of the cold cathode fluorescent lamp of the present invention. 【© [Main component symbol description] 1 : Cold cathode fluorescent lamp 2 : Lamp cover 3 : Cold cathode fluorescent tube 4 : Ring 7 : Lamp Pin 1〇: frequency conversion device 2〇: bridging member-15-