200538823 (1) 九、發明說明 【發明所屬之技術領域】 - 本發明係有關利用在投影機裝置的光源裝置。特別是 ，有關一種在具備相對向配置的一對電極之放電空間內密封 水銀、稀釋氣體、以及鹵等短弧（Short Arc)型放電燈，並 且設置有前面玻璃之光源裝置以及配置該光源裝置之顯示 • 裝置。 【先前技術】 以往，在液晶顯示器等影像投影型顯示裝置中，使用 在凹面反射境內配置高壓水銀放電燈之光源裝置。在該光 源裝置多使用例如在以石英玻璃構成的旋轉橢圓體形狀的 凹面反射鏡設置由介電體多層膜構成的反射層之反射鏡。 ' 又，在該反射鏡內配置在具有相對向配置的一對電極之放 •電空間內密封水銀、稀釋氣體、鹵等短弧型高壓水銀放電 # 燈作爲發光物質。這種光源裝置隨著最近的液晶顯示器， 特別是可動式（Movable type )之更普及的小型輕量化、 高性能要求，該光源裝置本身亦要求小型且高亮度者。 另外，配置於該光源裝置內的該高壓水銀放電燈在點 亮時必須使密封至該放電空間內的水銀充分蒸發，使該放 電容器全體變成非常高溫。又，從該放電空間突出的密封 部亦隨著該放電空間的溫度成爲高溫。在該密封部內設置 有用來供電至一對相對向配置的電極之由Mo等構成的金 屬箔及與該金屬箔連接的外部導線，當該密封部的溫度變 -4- 200538823 (2) 得過商時，此等金屬部因爲氧化等腐鈾產生不良情況。因 此，以往在該光源裝置的反側鏡側面或前面玻璃等設置空 孔’利用該空孔在該高壓水銀放電燈送風並冷卻冷卻風。 例如，在專利第3 1 83 2 1 3號公報記載有於該反射鏡的前面 玻璃設置空孔，藉由從該空孔突出該高壓水銀放電燈的密 封部，部分自然空冷該密封部，或進行強制空冷而冷卻。 又，例如，根據專利第3 3 8 1 5 66號公報，揭示有隨著在該 反射鏡開口側的側面設置空孔，於該反射鏡的頭部設置排 風用的孔，藉著從該反射鏡的開口側在該反射鏡的頭部方 向製作空氣的流動，冷卻該密封部的構造。 在第6圖顯示以往的光源裝置。光源裝置5 〇由：反射 鏡5 1、配置在該反射鏡5 1內的放電燈5 2、及以覆蓋該反射 鏡51的前面開口部之方式配置的前面玻璃53。又，該放電 燈5 2係由··放電容器54、與該放電容器54內相對向配置的 ~對電極5 5、從該放電容器5 4突出的密封部5 6、密封在該 密封部5 6內且與該電極5 5連接的金屬箔5 7、熔接在該金屬 箔5 7的另一端之外部導引棒58所構成。該放電燈52介以接 著材60與基部59連接。該基部59係設置有冷卻風排出用孔 6 1。又，在該反射鏡5 1設置安裝有冷卻風的空孔62，如第 6圖中的箭號表示，從該空孔62流入的冷卻風冷卻該放電 燈52的外部導引棒58等，最後從該冷卻風排出用孔61排出 〇 然而，在該光源裝置的該前面玻璃設置空孔，從該前 面玻璃突出該高壓水銀放電燈的密封部而冷卻時，萬一引 200538823 (3) 起燈破損等而使該密封部脫落，則猜測將產生該高壓水銀 放電燈的構成物從該前面玻璃的空孔剝落等不良狀況。又 ，在該反射鏡側面於設置空孔用來取入冷卻風時，有所謂 引起該高壓水銀放電燈的構成物剝落至該光源裝置外的問 因此，若在該反射鏡設置空孔，雖可解決上述問題， 反之’若在該反射鏡設置空孔，則配置於該反射鏡內的該 高壓水銀放電燈的密封部等變成非常高溫，產生所謂早期 的照度惡化或短壽命，更有破損等問題產生。因此，提案 一種在該反射鏡不具有空孔，在所謂密閉形式的該光源裝 置中，提案有用來冷卻成爲該密封部等高溫的部分之方法 〇 例如，根據日本特開2 0 0 1 - 2 2 2 9 7 6號公報，記載有在 該反射鏡內不導入冷卻風時的該光源裝置。根據該公報， 爲了冷卻配置於該反射鏡內的該高壓水銀放電燈的密封部 ，而使該密封部的一部分從該前面玻璃突出或一體化，在 反射鏡前面吹送冷卻風使之冷卻。進一步揭示：藉由由銅 板等構成的熱傳導率高的材料橫跨該密封部大致全長捲繞 的吸收構件、該吸收構件貫通該反射鏡將熱導出至外部的 導熱部、以及放出所被導入的熱之放熱部，來冷卻該密封 部。 〔專利文獻1〕日本專利第3 1 8 3 2 1 3號 〔專利文獻2〕日本專利第3 3 8 1 5 6 6號 〔專利文獻3〕日本特開第2 0 0 1 - 2 2 2 9 7 6號 200538823 (4) 【發明內容】 〔發明所欲解決之課題〕 然而，即使在該光源裝置單體可降低該密封部等的溫 度，當實際上對於液晶投影機等顯示裝置進行組裝、點亮 試驗時，產生的所謂位於該反射鏡的開口側之密封部或外 部導引、與該外部導引熔接的供電部等異常加熱之問題。 特別是，在使用數位•鏡•裝置（DMD : TEXAS INSTRUMENTSI的登陸商標）或使用反射型液晶之顯示裝 置等，在聚光來自該光源裝置的光之型式的顯示裝置中， 該密封部等異常加熱的比例明顯增加。再者，該加熱亦有 產生所謂導致外部導引部與供電線之間的熔接部斷線之原 因的問題。 因此，本發明所欲解決之課題爲提供一種配置於光源 裝置內的該高壓水銀放電燈沒有異常加熱之光源裝置。特 別是，提供一種不會異常加熱配置於聚光從該光源裝置放 射的光之型式的顯示裝置之該光源裝置內的該高壓水銀放 電燈的該密封部等的光源裝置。 [用以解決課題之手段] 對於該光源裝置之異常加熱，詳細調查的結果。該密 封部的異常加熱原因在於從該光源裝置放射出的光反射至 該顯示裝置的光學元件等，而產生再入射至該光源裝置之 返回光。特別是因爲，當該顯示裝置爲聚光型式時，反射 至該顯示裝置側的光學元件等之光的路徑會聚光至該密封 200538823 (5) 部之緣故。藉由該返回光，加熱配置於該光源裝置的反射 層（Re fleet or)開口側的該密封部之外部導引與鉬（Mo)箔而 氧化，最後產生所謂斷線的不良狀況。 因此，本發明的光源裝置係具備有：在具有相對向配 置的一對電極之放電空間內密封發光物質之放電容器及從 該放電容器突出於的一對密封部所構成的高壓水銀放電燈 ;內包該高壓水銀放電燈，並且反射從該高壓水銀放電燈 放射出的光之反射鏡；以及配置於該反射鏡的開口側之前 面玻璃，其特徵在於：在該前面玻璃附近設置吸收返回光 且變換爲熱的返回光吸收構件。該返回光吸收構件例如以 所謂鋁或銅之材料構成。又，該返回光吸收構件藉著吸收 返回光變換爲熱排出至外部。再者，藉著適當選擇將該返 回光吸收構件的表面狀態例如設爲粗糙面等，藉著擴散該 返回光的一部分，可降低返回至該光源裝置的光。此外， 在本發明中，所謂前面玻璃附近係指包含該前面玻璃上之 該前面玻璃的周邊，不僅反射鏡外部亦可爲該反射鏡內部 〇 又，在該返回光吸收構件設置放熱用的散熱片。將入 射至該返回光吸收構件的光變換爲熱，從該散熱片有效排 出至外部。 再者，該返回光吸收構件在該返回光吸收構件的表面 具有與該返回光相對的擴散功能、及/或吸收功能。此外 ，所謂該擴散功能及/或吸收功能係爲了吸收該返回光而 附加黑色等顏色，或是使該光吸收構件的表面爲粗面’以 -8- 200538823 (6) 擴散該返回光的方式，而可取得具有微小的凹凸之擴散面 等各種形態。 又，上述反射鏡以熱傳導性佳的金屬構成。此外，所 謂本發明之熱傳導性佳的金屬意指具有高的耐熱性，並爲 熱傳導率高的材料，例如，鋁、銅、鎂、或包含此等金屬 至少一種之合金等。 而且’在從配置於該反射鏡的開口側之該高壓水銀放 電燈的一方之密封部突出的外部導引棒設置放熱板。 又，該放熱板以具有柔軟性的材料構成。 再者’本發明之顯示裝置係具備有：由在具備相對向 配置的一對電極之放電空間內密封發光物質之放電容器及 從該放電容器突出於的一對密封部所構成的高壓水銀放電 燈；內包該高壓水銀放電燈，並且反射從該高壓水銀放電 燈放射出的光之反射鏡；以及配置於該反射鏡的開口側之 前面玻璃所構成的光源裝置所放射出的光，透過光學元件 部，介以空間調變元件投射者，其特徵在於：將從光學元 件部、及/或空間調變元件吸收該光源裝置的返回光且變 換爲熱的返回光吸收構件設置於該光學裝置的前面玻璃附 近。 [發明之效果] 根據本發明的申請專利範圍第1項之發明，從該光源 裝置的反射鏡暫時放射出的光再度返回該反射鏡內時，吸 收該返回光且變換爲熱之返回光吸收構件的作用，該返回 -9- 200538823 (7) 光不會加熱該高壓水銀放電燈的密封部或外部導弓丨彳奉與供 電部之熔接部等。又，該返回光吸收構件例如以所謂纟呂或 銅之材料構成。該返回光吸收構件係具有所謂：1 )D及收返 回光變換爲熱的並放熱至外部、2)吸收返回光變換爲熱並 傳導至該光源裝置而放熱、3)藉由適當選擇該返回光吸收 構件之表面狀態例如設爲粗糙面等，擴散返回光的一部分 ，使入射至該返回光吸收構件之光亮降低之功能。藉此’ 有所謂防止返回光之該密封部的溫度上升，解除氧化該密 封部內的金屬構件等之不良狀況之優點。 又，在本發明的申請專利範圍第2項之發明，藉由設 置於該返回光吸收構件之放熱用散熱片，具有所謂容易進 行冷卻再度返回該光源裝置之光變換爲熱之該返回光吸收 構件本身。 而且，根據本發明的申請專利範圍第3項之發明，由 於在該返回光吸收構件的表面具備擴散功能或吸收功能， 因此除了抑制該密封部之返回光引起的加熱之效果，亦有 所謂防止過度加熱該返回光吸收構件本身之優點。 根據本發明的申請專利範圍第4項之發明，由於以熱 傳導性佳的金屬構成該反射鏡，因此藉著反射光吸收構件 吸收反射光可有效排出所產生的熱之優點。在此，在以金 屬構成的反射鏡之基體部分使用熱傳導性佳的材料，在該 基體的反射面側設置有例如由介電體多層膜等構成的可見 光反射構件。此外，在本發明中所謂熱傳導性佳的金屬係 鋁、銅、鎂、或包含此等金屬至少一種之合金等。此等金 -10- 200538823200538823 (1) IX. Description of the invention [Technical field to which the invention belongs]-The present invention relates to a light source device used in a projector device. In particular, the present invention relates to a short arc type discharge lamp that seals mercury, diluent gas, and halogen in a discharge space having a pair of electrodes disposed opposite to each other, and a light source device provided with front glass and the light source device. Display • device. [Prior Art] Conventionally, in a projection type display device such as a liquid crystal display, a light source device in which a high-pressure mercury discharge lamp is arranged in a concave reflection area has been used. In this light source device, for example, a mirror in which a reflective layer made of a dielectric multilayer film is provided on a concave mirror of a spheroid shape made of quartz glass. 'Also, a pair of electrodes disposed opposite to each other is disposed in the reflector. The electric space is sealed with a short-arc high-pressure mercury discharge such as mercury, diluent gas, and halogen. # The lamp is used as a light-emitting substance. With the recent popularization of the liquid crystal display, especially the movable type (Movable type), such a light source device is required to be compact, lightweight, and high-performance, and the light source device itself is also required to be small and have high brightness. In addition, when the high-pressure mercury discharge lamp arranged in the light source device is lit, the mercury sealed in the discharge space must be sufficiently evaporated, so that the entire discharge vessel becomes extremely high temperature. The sealing portion protruding from the discharge space also becomes high in accordance with the temperature of the discharge space. A metal foil made of Mo or the like and an external lead connected to the metal foil for power supply to a pair of oppositely disposed electrodes are provided in the sealing portion. When the temperature of the sealing portion changes -4- 200538823 (2) During the commercial period, these metal parts caused bad conditions due to uranium decay such as oxidation. Therefore, conventionally, a hole 'is provided on the side of the side mirror of the light source device, the front glass, or the like, and the high-pressure mercury discharge lamp is used to blow air and cool the cooling air by using the hole. For example, in Patent No. 3 1 83 2 1 3, it is described that a hole is provided in the front glass of the reflector, and the sealing portion of the high-pressure mercury discharge lamp protrudes from the hole, and the sealing portion is partially air-cooled naturally, or Cool by forced air cooling. In addition, for example, according to Patent Publication No. 3 3 8 1 5 66, it is disclosed that as a hole is provided on the side surface of the opening side of the mirror, a hole for exhausting air is provided on the head of the mirror. The opening side of the mirror creates a flow of air in the direction of the head of the mirror, and cools the structure of the sealing portion. FIG. 6 shows a conventional light source device. The light source device 50 is composed of a reflecting mirror 51, a discharge lamp 52 arranged inside the reflecting mirror 51, and a front glass 53 arranged to cover a front opening of the reflecting mirror 51. The discharge lamp 5 2 is composed of a discharge vessel 54, a counter electrode 5 disposed opposite to the inside of the discharge vessel 54, a sealing portion 5 6 protruding from the discharge vessel 5 4, and sealing in the sealing portion 5. 6 and a metal foil 5 7 connected to the electrode 5 5, and an external guide rod 58 welded to the other end of the metal foil 5 7. The discharge lamp 52 is connected to the base 59 via an adhesive 60. The base 59 is provided with a cooling air discharge hole 61. In addition, an empty hole 62 is provided in the reflecting mirror 51 for cooling air. As indicated by the arrow in FIG. 6, the cooling air flowing in from the empty hole 62 cools the external guide rod 58 and the like of the discharge lamp 52. Finally, it is discharged from the cooling air discharge hole 61. However, when a hole is provided in the front glass of the light source device, and the sealing portion of the high-pressure mercury discharge lamp is projected from the front glass to cool, in case of 200538823 (3) If the lamp is broken or the like and the sealing portion is peeled off, it is presumed that problems such as peeling of the structure of the high-pressure mercury discharge lamp from a hole in the front glass may occur. In addition, when an empty hole is provided on the side of the reflector for taking in cooling air, there is a problem that the structure of the high-pressure mercury discharge lamp is peeled out of the light source device. Therefore, if an empty hole is provided in the reflector, although The above problem can be solved, otherwise, if an empty hole is provided in the mirror, the sealing part of the high-pressure mercury discharge lamp arranged in the mirror becomes very high temperature, resulting in the so-called early deterioration of the illuminance or short life and more damage. And so on. Therefore, a method is proposed in which the reflector does not have a hole, and in a so-called hermetically sealed light source device, a method for cooling a portion that becomes a high temperature such as the sealing portion is proposed. For example, according to Japanese Patent Application Laid-Open No. 2 0 1-2 Japanese Patent No. 2 2 976 describes the light source device when cooling air is not introduced into the reflector. According to the publication, in order to cool the sealing portion of the high-pressure mercury discharge lamp arranged in the reflector, a part of the sealing portion protrudes or is integrated from the front glass, and cooling air is blown in front of the reflector to cool it. It was further revealed that an absorption member wound with a material having a high thermal conductivity made of a copper plate or the like across the substantially entire length of the sealing portion, the absorption member penetrating the reflector to conduct heat to the outside, and a heat-conducting portion that is introduced to the outside The heat exothermic portion cools the sealing portion. [Patent Document 1] Japanese Patent No. 3 1 8 3 2 1 3 [Patent Document 2] Japanese Patent No. 3 3 8 1 5 6 6 [Patent Document 3] Japanese Patent Laid-Open No. 2 0 0 1-2 2 2 9 7 No. 200538823 (4) [Summary of the Invention] [Problems to be Solved by the Invention] However, even when the light source device alone can reduce the temperature of the sealing portion and the like, when a display device such as a liquid crystal projector is actually assembled, During the lighting test, problems such as abnormal heating such as a sealing portion located on the opening side of the mirror, an external guide, and a power supply portion fused to the external guide occurred. In particular, in a display device using a digital / mirror device (registered trademark of DMD: TEXAS INSTRUMENTSI) or a reflective liquid crystal, etc., in a display device of a type that collects light from the light source device, the seal portion is abnormal. The proportion of heating increased significantly. Furthermore, this heating also has a problem that causes a so-called disconnection of the welding portion between the external guide portion and the power supply line. Therefore, the problem to be solved by the present invention is to provide a light source device in which the high-pressure mercury discharge lamp arranged in the light source device is not abnormally heated. In particular, it provides a light source device that does not abnormally heat the sealing portion of the high-pressure mercury discharge lamp arranged in the light source device of a display device that collects light emitted from the light source device. [Means to Solve the Problem] The results of detailed investigation on abnormal heating of the light source device. The abnormal heating of the sealing portion is caused by the light emitted from the light source device being reflected to the optical elements of the display device, etc., and the return light re-incident to the light source device is generated. In particular, when the display device is a light-condensing type, a path of light reflected to an optical element or the like on the side of the display device condenses light to the seal 200538823 (5). By the returning light, the external guide of the sealing portion disposed on the opening side of the reflective layer (Re fleet or) of the light source device is heated and oxidized with molybdenum (Mo) foil, and finally a problem such as a disconnection occurs. Therefore, the light source device of the present invention is provided with: a discharge vessel that seals a luminescent substance in a discharge space having a pair of electrodes disposed opposite to each other, and a high-pressure mercury discharge lamp composed of a pair of sealed portions protruding from the discharge vessel; A reflecting mirror which contains the high-pressure mercury discharge lamp and reflects the light emitted from the high-pressure mercury discharge lamp; and a front glass arranged on the opening side of the mirror, which is characterized in that an absorption-return light is provided near the front glass. And converted into heat returning light absorbing member. The returning light absorbing member is made of, for example, a so-called aluminum or copper material. The returning light absorbing member converts the returning light into heat and discharges it to the outside. Furthermore, by appropriately selecting the surface state of the returning light absorbing member to be, for example, a rough surface, etc., and by diffusing a part of the returning light, the light returning to the light source device can be reduced. In addition, in the present invention, the vicinity of the front glass refers to the periphery of the front glass including the front glass, and not only the outside of the mirror but also the inside of the mirror, and a heat radiation is provided for the return light absorbing member. sheet. The light incident on the returning light absorbing member is converted into heat, and is efficiently discharged from the heat sink to the outside. Furthermore, the returning light absorbing member has a diffusing function and / or absorbing function on the surface of the returning light absorbing member as opposed to the returning light. In addition, the diffusing function and / or absorbing function is to add a color such as black in order to absorb the returning light, or to make the surface of the light absorbing member a rough surface. , And can obtain various forms such as a diffuse surface with minute unevenness. The reflecting mirror is made of a metal having excellent thermal conductivity. In addition, the metal having good thermal conductivity in the present invention means a material having high heat resistance and high thermal conductivity, such as aluminum, copper, magnesium, or an alloy containing at least one of these metals. Further, a heat radiation plate is provided on an external guide rod protruding from one of the sealing portions of the high-pressure mercury discharge lamp disposed on the opening side of the reflector. The heat radiation plate is made of a flexible material. Furthermore, the display device of the present invention includes a high-pressure mercury discharge composed of a discharge vessel in which a light-emitting substance is sealed in a discharge space including a pair of electrodes disposed opposite to each other, and a pair of sealing portions protruding from the discharge vessel. A lamp; a reflector that contains the high-pressure mercury discharge lamp and reflects light emitted from the high-pressure mercury discharge lamp; and light emitted from a light source device composed of a front glass disposed on an opening side of the reflector and transmitted The optical element section is a projector through which a spatial modulation element is projected, and is characterized in that a returning light absorbing member that absorbs the returned light of the light source device from the optical element section and / or the spatial modulation element and converts it into heat is provided in the optical Near the front glass of the unit. [Effects of the Invention] According to the invention of claim 1 in the scope of patent application of the present invention, when the light temporarily radiated from the mirror of the light source device returns to the mirror again, the returned light is absorbed and converted into heat. The function of the component, the return-9- 200538823 (7) The light will not heat the sealing part of the high-pressure mercury discharge lamp or the external guide bow, and the welding part with the power supply part. The returning light absorbing member is made of, for example, a material called copper or copper. The returning light absorbing member has so-called: 1) D and the returned light are converted into heat and radiated to the outside, 2) the absorbed return light is converted into heat and transmitted to the light source device to release heat, and 3) the return is appropriately selected The surface state of the light absorbing member is, for example, a rough surface or the like, and has a function of diffusing a part of the return light and reducing the light incident on the return light absorbing member. This has the advantage of preventing the temperature of the sealed portion from returning light from rising, and eliminating the disadvantages such as oxidizing the metal member in the sealed portion. In addition, in the second invention of the scope of patent application of the present invention, the heat-releasing heat sink provided on the returning light absorbing member has the so-called returning light absorption which is easy to cool and return the light returned to the light source device to heat. The component itself. In addition, according to the invention of claim 3 in the scope of patent application of the present invention, since the surface of the returning light absorbing member has a diffusing function or an absorbing function, in addition to the effect of suppressing the heating caused by the returning light of the sealing portion, there is also a so-called prevention An advantage of excessively heating the returning light absorbing member itself. According to the invention of claim 4 in the scope of patent application of the present invention, since the reflecting mirror is made of a metal having good thermal conductivity, the reflected light absorbing member absorbs the reflected light and can effectively discharge the generated heat. Here, a base member of a metal reflector is made of a material having high thermal conductivity, and a visible light reflecting member made of, for example, a dielectric multilayer film is provided on the reflecting surface side of the base member. Further, in the present invention, a metal-based aluminum, copper, magnesium, or an alloy containing at least one of these metals is referred to as a thermally conductive material. Such gold -10- 200538823
屬係具有高的耐熱性，並且爲熱傳導率高的材料。 又’根據本發明的申請專利範圍第5項之發明，藉著 於從該高壓水銀放電燈的一方之密封部突出的外部導引棒 設置加熱板’藉由來自放電容器之傳導或輻射降低被加熱 的外部導引棒之溫度，就具有所謂可降低配置於密封部的 金屬材料之氧化等之優點。 而且，根據本發明的申請專利範圍第6項之發明，由 於上述的放熱板是以具有柔軟性的材料構成，因此具有藉 著返回光吸收構件吸收返回光就可有效排出已產生的熱之 優點。在此，由於可充分吸收在該高壓水銀放電燈之點亮 時或熄滅時產生的熱膨脹之應力，因此不會對該高壓水銀 放電燈或該反射鏡施加負荷，亦具有不會產生所謂破損的 問題之優點。 又，根據本發明的申請專利範圍第7項之發明，由於 藉由配置於顯示裝置的光學元件等反射從光源裝置放射出 的光，再藉由入射至該光源裝置的返回光加熱該高壓水銀 放電燈之密封部等’因此可抑制設置於該顯示裝置之光源 裝置內的該高壓水銀放電燈的加熱之不良狀況’亦具有可 實現穩定的壽命之優點。 【實施方式】 本發明光源裝置之不透過顯示裝置的光學元件等而在 該光學元件等表面被反射的光，因爲會妨礙聚光在配置於 該反射鏡內的該高壓水銀放電燈之返回光’而在該反射鏡 -11 - 200538823 (9) 的前面玻璃或在該附近設置吸收該返回光並轉換爲熱且放 出至外部的返回光吸收構件。以下，使用圖面說明具體實 施例。 [實施例1] 依據第1圖說明本發明之第1實施例。第1圖係說明本 發明之顯示裝置16的槪略圖。該顯示裝置16係由：光源裝 置15、將來自該光源裝置15所放射的光分解爲單色成分之 旋轉型的濾色鏡1 1、以及可讓透過該濾色鏡1 1之光入射的 光學系統1 2所構成。此外，雖未顯示於第1圖，但該光學 系統1 2例如包含有：使透過該濾色鏡1 2的光均勻之圓柱形 透鏡；藉由液晶元件或DMD等所構成的影像信號生成用 的反射型空間調變元件；將在該空間調變元件構成的畫像 信號投射至屏幕等顯示板之投射透鏡等。又，配置在該顯 示裝置1 6內的該光源裝置1 5是由以下構件所構成：高壓水 銀放電燈5 ;內包該高壓水銀放電燈5之反射鏡8 ;與該反 射鏡8的頭部8 a側接合且固持該高壓水銀放電燈5的基部7 ;以覆蓋該反射鏡8的開口部8b側之方式設置的前面玻璃 9 ;以及配置於該前面玻璃9的返回光吸收構件1 〇。該返回 光吸收構件1 0例如以所謂的鋁或銅之材料構成。又，該高 壓水銀放電燈5具有：將相對向配置的一對電極1設置於放 電空間2內之放電容器3、以及突出於該放電容器3的兩端 之密封部4，且該密封部4是由：藉由與該電極1電性連接 的Μ 〇等構成的金屬箔6 a、及與該金屬箔6 a熔接的外部導 -12- 200538823 (10) 引棒6b所構成。該返回光吸收構件1 0，是以返回光不入 射至該高壓水銀放電燈5的金屬箔6a或外部導引棒6b之方 式，具有使此等部份成爲影（被遮住）的充分的大小。在本 實施例中，例如該前面玻璃9的直徑與φ 70mm相對配置 直徑Φ 7mm之鋁板。 第1圖的箭頭係表示從該高壓水銀放電燈5所放射的光 之路徑，具體而言，從該高壓水銀放電燈5放射，以反射 鏡8反射，透過濾色鏡1 1並入射至光學系統1 2。在此，從 該光源裝置1 5放射的光之一部分不需透過濾色鏡1 1或光學 元件1 2，例如返回光路徑r(虛線箭頭）般從濾色鏡1 1反射 至該光源裝置15側作爲返回光。由於該返回光藉由返回光 吸收構件1 〇被吸收，且變換爲熱而被排出，因此可抑制內 包於該光源裝置1 5的該高壓水銀放電燈5，特別是抑制該 外部導引部6b或金屬箔6a之該返回光的異常加熱。又， 由於在該返回光吸收構件1 0的返回光入射側設置有細的散 熱片1 7，因此當返回光被該返回光吸收構件1 〇吸收且變換 爲熱之後，可藉由該散熱片有效排出至外部。再者，若將 該返回光吸收構件1 〇的表面設爲粗糙面，可使該返回光擴 散，可降低返回至該光源裝置的光。又，若在該返回光吸 收構件1 0的表面附上黑色系的顏色，可提高返回光的吸收 效率且提高熱的變換效率。此外，在本實施例中，吸收返 回光變換爲熱之後，雖藉由送風至外部的冷卻風等冷卻， 惟在該光源裝置側傳遞利用傳導所產生的熱，亦可冷卻該 光源裝置全體。 -13- 200538823 (11) [實施例2] 第2圖係本發明之光源裝置的第2實施例之槪略剖面圖 。該光源裝置47在實施例1所示的光源裝置16中，將返回 光吸收材10設置在反射鏡9內。從光源裝置47放射的光之 一部分不透過濾色鏡11或光學元件12等，反射至該光源裝 置4 7側作爲返回光。該返回光透過前面玻璃25，藉由配置 於反射鏡23內部的返回光吸收構件48吸收而變換爲熱。在 該返回光吸收材48設置有用來保持固定該返回光吸收材48 之固定棒49，該固定棒49的一方之端是與設置在該反射鏡 23的開口部23a側之前面玻璃保持用蓋24連接。在該返回 光吸收構件48產生的熱是透過該固定棒49傳達至該前面玻 璃保持用蓋24，並排出至外部。藉此，不需使該高壓水銀 放電燈22的外部導引棒29之溫度上升而可使熱放散。該返 回光吸收材4 8例如以所謂鋁或銅之材料構成。又，在該返 回光吸收構件2 6之表面附加黑色系的顏色，提高返回光的 吸收效率，並提高熱的變換效率。在本實施例之情況下， 由於該返回光吸收構件26配置於反射鏡23內，因此與其將 該返回光吸收構件26之表面設爲擴散面，不如爲了提高吸 收率而附加黑色系的顏色較佳。此外，在本實施例中，以 鋁等金屬構成反射鏡23或前面玻璃保持用蓋24。 [實施例3] 第3圖係本發明之光源裝置的第3實施例之槪略剖面圖 - 14- 200538823 (12) 。該光源裝置2 1係由以下構件所構成：高壓水銀放電燈2 2 、內包該高壓水銀放電燈2 2之反射鏡2 3 ;設置於該反射鏡 23的開口部23a側之前面玻璃保持用蓋24 ;保持在該前面 玻璃保持用蓋24之前面玻璃25 ;以及設置於該前面玻璃的 中央附近之返回光吸收構件2 6。又，該高壓水銀放電燈22 由以下構件所構成：放電容器27、從該放電容器27突出的 密封部2 8、以及埋設於該密封部2 8之外部導引棒2 9，在該 外部導引棒29連接有電力供給線3 0。在本實施例中，該反 射鏡23由熱傳導性佳的金屬構成，例如以鋁等形成，在該 反射鏡2 3的頭部3 1側設置有放熱片3 2。又，該電力供給線 3 0是與在該反射鏡23貫通絕緣材23之供電插銷34連接。進 一步，於埋設在該密封部28之外部導引棒29連接有放熱板 35，就可有效排出該外部導引棒29的熱。又，設置於該前 面玻璃25的返回光吸收構件26在返回光的入射側形成有細 的放熱用散熱片36，將在該返回光吸收構件26吸收的光變 換爲熱，從該散熱片36有效排出。該返回光吸收構件26例 如以所謂鋁或銅的材料構成。又，若將該返回光吸收構件 2 6的表面設爲粗糙面，可使該返回光擴散，且可降低返回 該光源裝置之光。又，若在該返回光吸收構件2 6的表面附 上黑色系的顏色，提高返回光的吸收效率，且可提高熱的 變換效率。 [實施例4] 第4圖係本發明之光源裝置的第4實施例之槪略剖面圖 -15- 200538823 (13) 。該光源裝置40是設有貫通前面玻璃25並與配置在反射鏡 23內的高壓水銀放電燈22之外部導引棒29連接之放熱板41 ，該放熱板4 1的前端是與放熱器4 2連接。該放熱器4 2例如 設置有放熱用的散熱片。又，在該放熱器42的前面於側面 方向（第4圖的上側方向）設置有用來使冷卻風通過的孔之 返回光吸收構件26，由於該返回光吸收構件2 6遮蔽入射至 該放熱器42之返回光，因此放熱器42不會因爲該返回光反 而被加熱。在此，該高壓水銀放電燈22的外部導引棒29因 爲從該高壓水銀放電燈22所傳導的熱變成非常高溫，惟例 如藉著在該光源裝置40的前面玻璃側送風冷卻風，就可有 效冷卻該返回光吸收構件26或放熱器42，防止該外部導引 棒2 9等被過度加熱。又，由於該放熱板41以具有柔軟性的 材料構成，因此在該高壓水銀放電燈22點亮時即使該高壓 水銀放電燈22熱膨脹，由於不會對該密封部28或外部導引 棒2 9施加多餘的應力，因此不會使該高壓水銀放電燈22破 損。 [實施例5] 第5圖係本發明之光源裝置的第5實施例之槪略剖面圖 。該光源裝置45係在被設置於反射鏡23的開口側之前面玻 璃保持用蓋2 4設置放熱片4 6之情況。藉著設置該放熱片4 6 ，可有效排出從與該返回光吸收構件2 6或該局壓水銀放電 燈2 2的外部導引棒2 9連接的放熱板3 5所傳導的熱。 -16- 200538823 (14) 【圖式簡要說明】 第1圖係本發明之顯示裝置的光之路徑的說明用槪略 圖。 第2圖係本發明之光源裝置的第2實施例之說明用槪略 圖。 第3圖係本發明之光源裝置的第3實施例之說明用槪略 圖。 第4圖係本發明之光源裝置的第4實施例之說明用槪略 圖。 第5圖係本發明之光源裝置的第5實施例之說明用槪略 圖。 第6圖係以往的光源裝置之槪略的說明用槪略圖。 【主要元件符號說明】 1 :電極 2 :放電空間 3 :放電容器 4 :密封部 5 :高壓水銀放電燈 6a :金屬范 6b :外部導引棒 7 :基部 8 :反射鏡 9 :前面玻璃 -17- 200538823 (15) 1 0 :返回光吸收構件 1 1 :濾色鏡 1 2 :光學系統 1 5 :光源裝置 16 :顯示裝置 1 7 :散熱片 r :返回光路徑 2 1 :光源裝置 2 2 :高壓水銀放電燈 2 3 :反射鏡 2 3 a :開口部 24 :前面玻璃保持用桿 2 5 :前面玻璃 2 6 :返回光吸收構件 2 7 :放電容器 2 8 :密封部 29 :外部導引棒 3 0 :電力供給線 3 1 :頭部 3 2 :放熱片 3 3 :絕緣材 3 4 :供電銷 3 5 :放熱板 3 6 :散熱片 -18- 200538823 (16) 40 :光源裝置 4 1 :放熱板 4 2 :放熱器 45 :光源裝置 4 6 :放熱片 47 :光源裝置 4 8 :返回光吸收構件 4 9 :固定棒 5 0 :光源裝置 5 1 :反射鏡 5 2 :放電燈 5 3 :前面玻璃 5 4 :放電容器 5 5 :電極 5 6 :密封部 5 7 ·_金屬箔 58 :外部導引棒 5 9 :基部 6 0 :接著材The genera has high heat resistance and is a material with high thermal conductivity. According to the invention of claim 5 of the scope of patent application of the present invention, the heating plate is provided by an external guide bar protruding from a sealing portion of one side of the high-pressure mercury discharge lamp, and is reduced by conduction or radiation from the discharge vessel. The temperature of the heated external guide bar has the advantage of reducing the oxidation of the metal material arranged in the sealing portion. In addition, according to the invention of claim 6 of the scope of patent application of the present invention, since the heat radiation plate is made of a flexible material, there is an advantage that the heat generated can be efficiently discharged by absorbing the return light by the return light absorbing member. . Here, since the stress of thermal expansion generated when the high-pressure mercury discharge lamp is lit or extinguished can be sufficiently absorbed, no load is applied to the high-pressure mercury discharge lamp or the reflector, and so-called damage is not caused. The advantages of the problem. In addition, according to the invention in claim 7 of the scope of patent application of the present invention, the light emitted from the light source device is reflected by an optical element or the like arranged on the display device, and the high-pressure mercury is heated by the return light incident on the light source device. The sealing portion of the discharge lamp and the like, "thereby suppressing the heating failure of the high-pressure mercury discharge lamp provided in the light source device of the display device" also has the advantage of achieving a stable life. [Embodiment] The light of the light source device of the present invention, which does not pass through the optical element of the display device and is reflected on the surface of the optical element, prevents the return light of the high-pressure mercury discharge lamp arranged in the reflector from being collected. 'A return light absorbing member that absorbs the return light, converts it into heat, and emits it to the outside is provided on the front glass of the mirror-11-200538823 (9). Hereinafter, specific examples will be described using drawings. [Embodiment 1] A first embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a schematic diagram illustrating a display device 16 of the present invention. The display device 16 is composed of a light source device 15, a rotary color filter 11 that decomposes light emitted from the light source device 15 into a monochromatic component, and an optical system 12 that allows light transmitted through the color filter 11 1 to enter. Made up. In addition, although not shown in FIG. 1, the optical system 12 includes, for example, a cylindrical lens that makes the light transmitted through the color filter 12 uniform; and a reflection for generating an image signal by a liquid crystal element, DMD, or the like. Type spatial modulation element; a projection lens that projects an image signal composed of the spatial modulation element onto a display panel such as a screen. In addition, the light source device 15 arranged in the display device 16 is composed of the following components: a high-pressure mercury discharge lamp 5; a reflector 8 including the high-pressure mercury discharge lamp 5; and a head of the reflector 8 A base portion 7 of the high-pressure mercury discharge lamp 5 is bonded to and held on the 8 a side; a front glass 9 provided to cover the opening portion 8 b side of the reflector 8; and a return light absorbing member 10 disposed on the front glass 9. The returning light absorbing member 10 is made of, for example, a so-called aluminum or copper material. In addition, the high-pressure mercury discharge lamp 5 includes a discharge vessel 3 in which a pair of electrodes 1 disposed oppositely are disposed in the discharge space 2, and a sealing portion 4 protruding from both ends of the discharge vessel 3, and the sealing portion 4 It is composed of a metal foil 6 a made of MOS or the like electrically connected to the electrode 1 and an external guide -12-200538823 (10) lead rod 6 b welded to the metal foil 6 a. The returning light absorbing member 10 is sufficient to make these portions become shadows (covered) in such a manner that the returning light does not enter the metal foil 6a or the external guide rod 6b of the high-pressure mercury discharge lamp 5. size. In this embodiment, for example, an aluminum plate having a diameter of 7 mm and a diameter of the front glass 9 opposite to 70 mm is arranged. The arrow in FIG. 1 indicates the path of light radiated from the high-pressure mercury discharge lamp 5. Specifically, the arrow radiated from the high-pressure mercury discharge lamp 5 is reflected by a reflector 8, passes through the color filter 11, and enters the optical system 1. 2. Here, part of the light radiated from the light source device 15 does not need to pass through the color filter 11 or the optical element 12, and is reflected from the color filter 11 to the light source device 15 side as return light, such as a return light path r (dotted arrow). . Since the returning light is absorbed by the returning light absorbing member 10 and converted into heat and discharged, it is possible to suppress the high-pressure mercury discharge lamp 5 contained in the light source device 15, and particularly to suppress the external guide portion. 6b or the metal foil 6a is abnormally heated by the returned light. In addition, since a thin heat sink 17 is provided on the return light incident side of the return light absorbing member 10, after the return light is absorbed by the return light absorbing member 10 and converted into heat, the heat sink may be used. Effectively discharged to the outside. Furthermore, if the surface of the returning light absorbing member 10 is made rough, the returning light can be diffused, and the light returning to the light source device can be reduced. In addition, if a black color is attached to the surface of the returning light absorbing member 10, the efficiency of absorbing returning light and the efficiency of heat conversion can be improved. In addition, in this embodiment, after the returned light is converted into heat, it is cooled by the cooling air supplied to the outside, but the entire light source device can be cooled by transmitting heat generated by conduction on the light source device side. -13- 200538823 (11) [Embodiment 2] Fig. 2 is a schematic sectional view of a second embodiment of the light source device of the present invention. In the light source device 47 in the light source device 16 shown in the first embodiment, the returning light absorbing material 10 is provided in the reflecting mirror 9. Part of the light radiated from the light source device 47 is not transmitted through the color filter 11 or the optical element 12, and is reflected to the light source device 47 side as return light. This returning light passes through the front glass 25 and is absorbed by the returning light absorbing member 48 disposed inside the reflector 23 and converted into heat. The returning light absorbing material 48 is provided with a fixing rod 49 for holding and fixing the returning light absorbing material 48, and one end of the fixing rod 49 is a cover for holding front glass and a front surface provided on the opening 23a side of the reflecting mirror 23. 24 connections. The heat generated in the returning light absorbing member 48 is transmitted to the front glass holding cover 24 through the fixing rod 49 and is discharged to the outside. Thereby, it is not necessary to raise the temperature of the external guide rod 29 of the high-pressure mercury discharge lamp 22, and the heat can be dissipated. The returning light absorbing material 48 is made of, for example, a so-called aluminum or copper material. In addition, a black color is added to the surface of the returning light absorbing member 26 to improve the absorption efficiency of the returning light and improve the heat conversion efficiency. In the case of this embodiment, since the returning light absorbing member 26 is disposed in the reflecting mirror 23, instead of setting the surface of the returning light absorbing member 26 as a diffusing surface, it is better to add a black color to increase the absorption rate. good. In this embodiment, the reflecting mirror 23 or the front glass holding cover 24 is made of metal such as aluminum. [Embodiment 3] Figure 3 is a schematic sectional view of a third embodiment of the light source device of the present invention-14- 200538823 (12). The light source device 21 is composed of the following components: a high-pressure mercury discharge lamp 2 2, a reflecting mirror 2 3 including the high-pressure mercury discharge lamp 22, and a front glass holding member provided on the opening 23 a side of the reflecting mirror 23. A cover 24; a front glass 25 held by the front glass holding cover 24; and a return light absorbing member 26 provided near the center of the front glass. The high-pressure mercury discharge lamp 22 is composed of a discharge vessel 27, a sealing portion 28 protruding from the discharge vessel 27, and an external guide rod 29 embedded in the sealing portion 28. The lead rod 29 is connected to a power supply line 30. In this embodiment, the reflecting mirror 23 is made of a metal having good thermal conductivity, for example, aluminum, and a heat radiating sheet 32 is provided on the head 31 side of the reflecting mirror 23. The power supply line 30 is connected to a power supply pin 34 penetrating the insulating material 23 in the reflecting mirror 23. Further, a heat radiation plate 35 is connected to the outer guide rod 29 buried in the sealing portion 28, so that the heat of the outer guide rod 29 can be effectively discharged. The returning light absorbing member 26 provided on the front glass 25 is formed with a thin heat radiation fin 36 on the incident side of the returning light. The light absorbed by the returning light absorbing member 26 is converted into heat, and the returning light absorbing member 26 Effectively discharged. The returning light absorbing member 26 is made of, for example, a so-called aluminum or copper material. Further, if the surface of the returning light absorbing member 26 is made rough, the returning light can be diffused, and the light returning to the light source device can be reduced. In addition, if a black color is attached to the surface of the returning light absorbing member 26, the absorption efficiency of the returning light is improved, and the heat conversion efficiency can be improved. [Embodiment 4] Fig. 4 is a schematic sectional view of a fourth embodiment of the light source device of the present invention -15- 200538823 (13). The light source device 40 is provided with a heat radiation plate 41 penetrating the front glass 25 and connected to the external guide rod 29 of the high-pressure mercury discharge lamp 22 arranged in the reflector 23. The front end of the heat radiation plate 41 is connected to the heat radiator 4 2 connection. The heat radiator 42 is provided with, for example, a heat radiation fin. In addition, a return light absorbing member 26 is provided on the front surface of the heat radiator 42 in a lateral direction (upward direction in FIG. 4) to allow cooling air to pass therethrough. The return light absorbing member 26 is shielded from entering the heat radiator. The return light of 42 does not cause the radiator 42 to be heated by the return light. Here, the external guide rod 29 of the high-pressure mercury discharge lamp 22 becomes very high because of the heat conducted from the high-pressure mercury discharge lamp 22, but for example, by supplying cooling air to the front glass side of the light source device 40, The returning light absorbing member 26 or the radiator 42 is effectively cooled to prevent the external guide rods 29 and the like from being excessively heated. In addition, since the heat radiation plate 41 is made of a flexible material, even when the high-pressure mercury discharge lamp 22 is thermally expanded when the high-pressure mercury discharge lamp 22 is turned on, the sealing portion 28 or the external guide rod 29 is not caused. Since excessive stress is applied, the high-pressure mercury discharge lamp 22 is not damaged. [Embodiment 5] Fig. 5 is a schematic sectional view of a fifth embodiment of a light source device according to the present invention. This light source device 45 is provided in the case where a heat radiation sheet 46 is provided on the front glass holding cover 24, which is provided on the front side of the reflecting mirror 23. By providing the heat radiating sheet 4 6, the heat conducted from the heat radiating plate 35 connected to the return light absorbing member 26 or the external guide rod 29 of the partial pressure mercury discharge lamp 22 can be efficiently discharged. -16- 200538823 (14) [Brief description of the drawings] Fig. 1 is a schematic diagram for explaining the light path of the display device of the present invention. Fig. 2 is a schematic diagram for explaining a second embodiment of the light source device of the present invention. Fig. 3 is a schematic diagram for explaining a third embodiment of the light source device according to the present invention. Fig. 4 is a schematic diagram for explaining a fourth embodiment of the light source device according to the present invention. Fig. 5 is a schematic diagram for explaining a fifth embodiment of the light source device according to the present invention. Fig. 6 is a schematic explanatory diagram of a conventional light source device. [Description of main component symbols] 1: electrode 2: discharge space 3: discharge vessel 4: seal 5: high-pressure mercury discharge lamp 6a: metal fan 6b: external guide rod 7: base 8: reflector 9: front glass-17 -200538823 (15) 1 0: return light absorbing member 1 1: color filter 1 2: optical system 1 5: light source device 16: display device 1 7: heat sink r: return light path 2 1: light source device 2 2: high-pressure mercury Discharge lamp 2 3: Reflector 2 3 a: Opening 24: Front glass holding rod 2 5: Front glass 2 6: Returning light absorbing member 2 7: Capacitor 2 8: Sealing part 29: External guide bar 3 0 : Power supply line 3 1: Head 3 2: Heat sink 3 3: Insulating material 3 4: Power supply pin 3 5: Heat sink 3 6: Heat sink-18- 200538823 (16) 40: Light source device 4 1: Heat sink 4 2: Heat radiator 45: Light source device 4 6: Heat radiation sheet 47: Light source device 4 8: Return light absorbing member 4 9: Fixing rod 5 0: Light source device 5 1: Reflector 5 2: Discharge lamp 5 3: Front glass 5 4: discharge vessel 5 5: electrode 5 6: seal 5 7 · _metal foil 58: external guide rod 5 9: base 6 0: bonding material
6 1 2 :冷卻封排出用孔 6 2 :空孑L -19-6 1 2: Hole for cooling seal discharge 6 2: Air hole L -19-