M318140 八、新型說明： 【新型所屬之技術領域】 本創作係有關一種背投顯示裝置，特別是有關一種具有鏡頭遮光裝置之背 投顯示裝置。 【先前技術】 請參考第1A圖所示，在一背投顯示裝置1中係包括一殼體19、一光學引 、擎10、一擋光板13、一鏡頭遮光罩11、一螢幕15以及一反射鏡η。光學引擎 修10上係設置有至少一光機主體102與一鏡頭101，擋光板13係遮蓋在光學引擎 10上，且係具有一開口使鏡頭101穿出，一具有另一開口 111之鏡頭遮光罩Η 係配置於鏡頭101上，以有效阻擋鏡頭101所散射出的雜散光線。其中撞光板 13之功用係用以遮蓋光學引擎10漏光所發散出的雜散光線（圖中係以虛線箭頭 表示光線之前進方向），使得成像在螢幕15上的光線係僅來自鏡頭遮光罩u上 之開口 111區域内所射出之有效光、線（圖中係以實線箭頭表示光線之前進方 向）。相反地，未遮蓋檔光板13的光學引擎10，會使得螢幕上之成像受到光學 _ 5丨擎1G射出的散射光線變得模糊。請參考第1β圖與第ic圖所示，在第出圖 中係提供-未使用鏡糧光罩η的鏡頭1〇1，其所構成的有效影像14周圍係被 來自鏡頭11四周雜散光線包圍著，但在第lc圖中係提供一有使用鏡頭遮光罩 11 101 14 11 m避免漏光且四周雜散的光線可被阻擒，僅留下有效光線通過而讓有效影像 14受到干擾的機率降低。 而在、’予弓j擎1〇與擋光板13之間的組裝方式，則是利用擔光板13的開 _ 1上的鏡職光罩u。然而，由於不同^計的背投顯示裝置 5 M318140 所搭配的鏡頭ΗΠ时不同，所職 _ _ 兀4早1UI與擋光板13的設計也皆 需改變，但針對每-種光學引擎1〇之鏡頭1〇 11 白眾重新美供一種特定的鏡頭 遮先罩II麟歧13，非常地崎成本與不符合生產之考量。 【新型内容】 本創作之-_提供-種_讀置，対鋪示裝置中賴光板結 構改變或更換鏡頭時，僅需要改變單一零件即可進行新結構之域，而由於零 件數目減少’故可減少模具數量、降低零件成本、減少組褒工時。 本創作的其他目的和伽可峨本鑛所财賴麟财制進一步的 了解0 為達上述之-或部份或全部目的或是其他目的，本創作係提供一種背投 顯示裝置’其係包括-破體、—擂光板、—光機引擎、—鏡頭遮絲置、一榮 幕及-反賴。其帽光板餘裝於光判擎上，域與光裝置係裝設於光 學引擎與擋光板之間，此鏡頭遮光裝置係包括一遮光部與一罩體部，其中遮光 部係與罩體部為_體麵之結構，且遮光部係具有至少_開口贿來自鏡頭之 光線可自開口射出。另外，在鏡頭遮光裝置中更包括複數固定部，以用來使鏡 頭遮光裝置可與光學引擎之鏡頭、擋光板之間進行固定，而固定的方法則可為 卡合、搭接或鎖固。因此，當背投顯示裝置之光學引擎、擋光板中任一或兩者 同時進行結構的改變時，僅需重新修改鏡頭遮光裝置即可使得改變結構之光學 引擎、擋光板之間仍可保持相互吻合的組裝關係。 【實施方式】 有關本創作之前述及其他技術内容、特點與功效，在以下配合參考圖式之 一較佳實施例的詳細說明中，將可清楚的呈現。以下實施例中所提到的方向用 M318140 语’例如：上、下、左、亡 < fflA, ㈤錢等，僅是參考附加圖式的方向。因此，使 用的方向用語是絲說明並非用來限制本創作。 首先請同時參考第2圖、第q '、第4圖所示，在一背投顯示裝置2中係 包括一殼體30、一擋光板22、一光與” @ 9λ 先子引擎20、一鏡頭遮光裝置21、一螢幕25 及一反射鏡27。擋光板22係且古势ΒΒ 〜、 幵口 221，且設於殼體30内，用以將殼 之容刚娜1蝴缘容卿，其巾納丨擎2〇盘鏡 頭遮光裝置21設於第-容置空_，螢幕25與反概27則設於第二容置空間 内光予引擎20更包括光機主體2〇2及一鏡頭观光機主體⑽適於提供 一影像光束，綱2G1顺蝴主請之-端，舰繼束之_ 徑上’且穿出播光板22之第—開口 221，而鏡頭遮光裝置21之一端則組裝於鏡 頭2〇1上，另一端係遮蔽部份之第一開口泣卜當光機主體2〇2發出影像光束， 經過鏡賴出射第二容置空間，藉由位於影像光束之傳遞路徑上的反射鏡⑺ 將影像光束反射至螢幕25成像。 鏡頭遮光裝置21係包括-遮光部212與一罩體部211，遮光部212係組裝 於鏡頭201上’且具有至少一第二開口 213,而罩體部2ιι組裝於遮光部犯上， 本實施例中罩體部211與遮光部212之間係為一體成型的結構，其中，遮光部 212適於之遮蔽鏡頭201出射之部份之影像光束，並使其餘部份之影像光束由第 二開口 213射出。 就整體的背投顯示裝置2而言，其中的綱遮光裝置21之遮光部212係對 準在光學引擎20的鏡頭201上，因此，鏡頭2〇1在進行成像時，係可利用裝設 在其上的鏡頭遮光裝置21中的遮光部212以遮蔽鏡頭201四周圍的雜散光線， 並使得光線僅由遮光部212上的開口 213射出，而使得有效影像可更為清晰。 7 M318140 而為了使鏡頭遮光裝置21與鏡頭201之間的組裝更為穩固，請同時參考第 4圖、第5圖與第6圖所示，更在鏡頭遮光裝置21中設置至少一固定部214以 使鏡頭遮光裝置21固定在鏡頭201上，且在本實施態樣中係以卡合之組合方式 為例，固定部214包括複數個設置在鏡頭遮光裝置21上之卡榫，鏡頭2〇1具有 段差面’卡榫係直接卡合在鏡頭2〇1的段差面上，以將鏡頭遮光裝置21之一端 組裝於鏡頭201上，而組合後的鏡頭遮光裝置21之另一端相當貼近擋光板22(如 、第7圖所示），使鏡頭遮光裝置21與擋光板22之間的間隙相當地小，並利用鏡 φ頭遮光裝置21中的罩體部211適於遮蔽部份之第一開口 221，因此可有效避免 來自鏡頭201的光線自檔光板22的第一開口 221散射而干擾有效光線的成像效 果，同時，更因為有鏡頭遮光裝置21的設置，可有效地阻擋來自光機主體2〇2 的光線自擋光板22的第一開口 221散射。然而，除了於此所述之實施態樣以外， 上述之卡榫亦可以利用固定孔與鎖固元件相互搭配以取代其功能，並以鎖固方 式進行鏡頭遮光裝置21與鏡頭201之間的固定，或是利用搭接部的設計以使鏡 頭遮光裝置21與鏡頭201進行搭接組合。 φ 請參考第4圖與第6圖所示，由於整個鏡頭遮光裝置21係介在光學引擎20 與擋光板22之間，因此透過鏡頭遮光裝置21中，遮光部212提供一介面予光 學引擎20，同時亦利用罩體部211提供另一介面貼近擋光板22，以遮蔽部份之 第一開口 221，以使得光學引擎20與擋光板22之間可有效避免散射光線之干擾。 根據上述可知，由於本創作之鏡頭遮光裝置21係包括一體成型之遮光部212 與罩體部211，因此，當背投顯示裝置中，光學引擎2〇上的鏡頭201進行更換 而改變時’僅需針對鏡頭遮光裝置21中遮光部212與鏡頭201之間的介面結構 進行相對應之修改，因此在無須改變擂光板22之結構設計的前提下，即可吻合 8 M318140 改變後的光學引擎20，反之，當背投顯示裝置中的擋光板22進行結構上之改變 時，則僅需針對鏡頭遮光裝置21中罩體部211與擂光板22之間的貼近介面結 構進行相對應之修改，因此在無須改變光學引擎20之結構設計的前提下，即可 吻合改變後的擋光板22。此外，當光學引擎20中鏡頭201的規格變換時，除了 上述更改遮光部212之外，更可依據鏡頭201的結構以更改固定部214之設計， 則可在無須改變光學引擎20與擋光板22等結構設計的前提下，即可吻合改變 後的鏡頭201規格。 故，上述背投顯示裝置中的無論是光學引擎上的鏡頭進行更換而有尺寸上的 變化時或是擂光板有發生結構上的改變時，皆僅需改變鏡頭遮光裝置的遮光部 和罩體部的設計，因此，本_之背棚示裝置射姻其巾的鏡頭遮光 裝置在設計上進行不同的變化以使得背投顯示裝置在進行組裝時，降低需要更 動設計之零件數；且更由於本創作所提供之背投顯示裝置係包括-罩體部與遮 光邛體成型之鏡頭遮光裝置，僅需利用少數的固定部便可與光學引擎上之鏡 頭進行良好的組合’對於背投齡裝置整體的組裝來說，更可達到減少模具的 使用、降低模具成本、縮短組裝時間的目的。 惟以上所赫，僅為本_之難實關Μ，# —以此蚊本創作實施 之範圍，即大凡依本創作巾請專利細及創作說日肋容所作之簡單的等效變化 與修飾’皆仍屬本創作專·蓋之範_。另外本創作的任一實施例或申請 專利範圍不錢成本作朗揭露之全部目的或優點或_。此外，摘要部 分和標題僅是絲辅助專利文件搜尋之用，並非絲限制本創作之權利範 M318140 【圖式簡單說明】 第1A圖為習知以擋光板遮蓋在光機主體之光機成像示意圖。 第1B圖為習知未使用鏡頭遮光罩之鏡頭成像示意圖。 第1C圖為習知使用鏡頭遮光罩之鏡頭成像示意圖。 第2圖為本創作之背投顯示装置之結構示意圖。 第3圖為本創作之背投顯示裝置中的鏡頭遮光裝置之立體結構示意圖。 .第4圖為第2圖中之背投顯示裝置之立體分解結構示意圖。 鲁第5圖為第3圖中之鏡頭遮光裝置之另一視角下的立體分解結構示意圖。 第6圖為擋光板、鏡頭遮光裝置與鏡頭之組合結構示意圖。 第7圖為第6圖中之擋光板、鏡頭遮光裝置與鏡頭之另一視角下的立體組合 構示意圖。 鏡頭 11鏡頭遮光罩 U擋光板 15 螢篡 【主要元件符號説明】 1 背投顯示裝置 10光機主體 0 102發光模組 111 開口 14有效影像 17反射鏡 2 背投顯示裝置 20光學引擎 202光機本體 211罩體部 2〇1鏡頭 21鏡頭遮光裝置 212遮光部 M318140 213開口 22擋光板 221開口 25螢幕 30殼體 27反射鏡M318140 VIII. New description: [New technical field] The present invention relates to a rear projection display device, and more particularly to a rear projection display device having a lens shading device. [Previous Art] Referring to FIG. 1A, a rear projection display device 1 includes a housing 19, an optical guide, a stern 10, a light barrier 13, a lens hood 11, a screen 15, and a Mirror η. The optical engine repair 10 is provided with at least one optical machine main body 102 and a lens 101. The light blocking plate 13 is covered on the optical engine 10, and has an opening for the lens 101 to pass through, and a lens having another opening 111 to block the light. The cover is disposed on the lens 101 to effectively block stray light scattered by the lens 101. The function of the illuminating plate 13 is to cover the stray light emitted by the optical engine 10 (the dotted arrow indicates the forward direction of the light), so that the light imaged on the screen 15 is only from the lens hood u The effective light and the line emitted in the area of the upper opening 111 (the solid arrow in the figure indicates the direction in which the light is advanced). Conversely, the optical engine 10 that does not cover the light guide plate 13 causes the image on the screen to be blurred by the scattered light emitted by the optical engine 1G. Please refer to the 1β and ic diagrams. In the first figure, the lens 1〇1, which does not use the mirror reticle η, is provided, and the effective image 14 is surrounded by stray light from the lens 11. Surrounded by, but in the lc figure, there is a possibility to use the lens hood 11 101 14 11 m to avoid light leakage and the surrounding stray light can be blocked, leaving only effective light to pass through and the effective image 14 is disturbed. reduce. However, the assembly method between the front panel and the light-shielding plate 13 is to use the mirror mask u on the opening _1 of the light-retaining plate 13. However, since the different lenses of the rear projection display device 5 M318140 are different in time, the design of the _ _ 兀 4 early 1 UI and the light blocking plate 13 also needs to be changed, but for each optical engine 1 Lens 1〇11 Baizhong re-US for a specific lens cover hood II Linqi 13, very costly and does not meet production considerations. [New content] This creation--providing-species_reading, when changing the structure of the slab in the splicing device or changing the lens, only need to change a single part to carry out the domain of the new structure, and because the number of parts is reduced, Reduces the number of molds, reduces part costs, and reduces group downtime. The other purposes of this creation and the further understanding of the company's financial resources, such as the above-mentioned or some or all of the objectives or other purposes, the creation of a rear-projection display device Body, - twilight board, - light machine engine, - lens shading, one honor screen and - rebellion. The cap light plate is mounted on the optical engine, and the domain and the optical device are installed between the optical engine and the light blocking plate. The lens shading device comprises a light shielding portion and a cover portion, wherein the light shielding portion and the cover portion are The structure is _ decent, and the opaque portion has at least _ open bribes from the lens light can be emitted from the opening. In addition, the lens shading device further includes a plurality of fixing portions for fixing the lens shading device to the lens of the optical engine and the light blocking plate, and the fixing method may be engaging, overlapping or locking. Therefore, when the optical engine and the light blocking plate of the rear projection display device are simultaneously changed in structure, only the lens shading device needs to be newly modified, so that the optical engine and the light blocking plate of the changing structure can still maintain each other. An anastomotic assembly relationship. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. The directions mentioned in the following embodiments use M318140 words 'for example: upper, lower, left, negative < fflA, (5) money, etc., only referring to the direction of the additional schema. Therefore, the directional term used is not intended to limit the creation. First, please refer to FIG. 2, FIG. 2, and FIG. 4 simultaneously. In a rear projection display device 2, a housing 30, a light barrier 22, a light and a "@9λ" sub-engine 20, and a The lens shading device 21, a screen 25 and a mirror 27. The light blocking plate 22 is provided with an ancient 〜 〜 幵 221 221 and is disposed in the casing 30 for accommodating the shell of the Rong Ganga. The towel 丨 〇 2 2 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 , , , , , , , , , , , , , , , , , , 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头The main body (10) of the lens sightseeing machine is adapted to provide an image beam, and the end of the lens is arranged on the end of the beam, and the first end of the lens shading device 21 is provided. It is assembled on the lens 2〇1, and the other end is the first opening of the shielding portion. When the optical machine main body 2〇2 emits an image beam, the mirror passes through the second accommodating space, and is located on the transmission path of the image beam. The mirror (7) reflects the image beam to the screen 25. The lens shading device 21 includes a light blocking portion 212 and a cover portion 211, which shields the light. The 212 is assembled on the lens 201 and has at least one second opening 213, and the cover portion 2 is assembled to the light shielding portion. In this embodiment, the cover portion 211 and the light shielding portion 212 are integrally formed. The light blocking portion 212 is adapted to shield the image beam emitted from the portion of the lens 201 and cause the remaining portion of the image beam to be emitted from the second opening 213. For the overall rear projection display device 2, the light shielding device 21 therein The light shielding portion 212 is aligned on the lens 201 of the optical engine 20. Therefore, when the lens 2〇1 is imaged, the light shielding portion 212 in the lens shading device 21 mounted thereon can be used to shield the lens 201. The surrounding stray light causes the light to be emitted only by the opening 213 on the light shielding portion 212, so that the effective image can be made clearer. 7 M318140 And in order to make the assembly between the lens shading device 21 and the lens 201 more stable, please Referring to FIGS. 4 , 5 , and 6 , at least one fixing portion 214 is further disposed in the lens shading device 21 to fix the lens shading device 21 on the lens 201, and in the embodiment, Combination of snaps For example, the fixing portion 214 includes a plurality of cassettes disposed on the lens shading device 21, and the lens 2〇1 has a step surface, and the cassette is directly engaged with the step surface of the lens 2〇1 to shield the lens shading device. One end of the lens 21 is assembled on the lens 201, and the other end of the combined lens shading device 21 is relatively close to the light blocking plate 22 (as shown in FIG. 7), so that the gap between the lens shading device 21 and the light blocking plate 22 is equivalent. The cover portion 211 of the mirror φ head shading device 21 is adapted to shield a portion of the first opening 221, thereby effectively preventing light from the lens 201 from scattering from the first opening 221 of the light shielding plate 22 and interfering with effective light. The imaging effect, at the same time, can effectively block the light from the optical machine main body 2〇2 from being scattered from the first opening 221 of the light blocking plate 22 because of the arrangement of the lens shading device 21. However, in addition to the embodiment described above, the above-mentioned cassette can also be matched with the locking element by a fixing hole to replace its function, and the fixing between the lens shading device 21 and the lens 201 can be performed in a locking manner. Or, the design of the lap portion is used to make the lens shading device 21 and the lens 201 overlap and combine. φ, as shown in FIGS. 4 and 6 , since the entire lens shading device 21 is interposed between the optical engine 20 and the light blocking plate 22 , the light shielding portion 212 provides an interface to the optical engine 20 through the lens shading device 21 . At the same time, the cover portion 211 is used to provide another interface to the light blocking plate 22 to shield the first opening 221 of the portion, so that the interference between the optical engine 20 and the light blocking plate 22 can be effectively avoided. According to the above, since the lens shading device 21 of the present invention includes the integrally formed light shielding portion 212 and the cover portion 211, when the lens 201 on the optical engine 2 is replaced and changed in the rear projection display device, only Corresponding modification is needed for the interface structure between the light shielding portion 212 and the lens 201 in the lens shading device 21, so that the optical engine 20 after the modification of the 8 M318140 can be matched without changing the structural design of the calender plate 22, On the contrary, when the light barrier 22 in the rear projection display device is structurally changed, only the corresponding interface structure between the cover portion 211 and the calender plate 22 in the lens shading device 21 needs to be modified correspondingly. The changed light barrier 22 can be matched without changing the structural design of the optical engine 20. In addition, when the specification of the lens 201 in the optical engine 20 is changed, in addition to the above-described modification of the light shielding portion 212, the design of the fixing portion 214 can be changed according to the structure of the lens 201, and the optical engine 20 and the light blocking plate 22 need not be changed. Under the premise of structural design, the changed lens 201 specifications can be matched. Therefore, when there is a change in the size of the lens on the optical engine in the rear projection display device or when the structure of the calender is changed, only the light shielding portion and the cover of the lens shading device need to be changed. The design of the part, therefore, the lens shading device of the vestibule of the present invention is differently designed to make the rear projection display device reduce the number of parts requiring more design when assembling, and more The rear projection display device provided by the present invention comprises a cover portion and a light-shielding body-shaped lens shading device, which can be combined with the lens on the optical engine only by using a small number of fixing portions. In terms of overall assembly, the purpose of reducing the use of the mold, reducing the cost of the mold, and shortening the assembly time can be achieved. However, the above is only the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 'All are still the scope of this creation. In addition, any embodiment of the present invention or the scope of the patent application does not cover all of the objects or advantages or advantages disclosed. In addition, the abstract part and the title are only for the use of silk-assisted patent documents, and are not intended to limit the scope of this creation. M318140 [Simple description of the drawing] Figure 1A is a schematic diagram of the optical machine that covers the main body of the optical machine with a light barrier. . Figure 1B is a schematic view of a conventional lens that does not use a lens hood. Figure 1C is a schematic view of a conventional lens using a lens hood. Figure 2 is a schematic view showing the structure of the rear projection display device of the present invention. FIG. 3 is a schematic perspective view showing the lens shading device in the rear projection display device of the present invention. Fig. 4 is a perspective exploded perspective view of the rear projection display device of Fig. 2. Lu 5 is a schematic exploded perspective view of the lens shading device in FIG. 3 from another perspective. Fig. 6 is a schematic view showing the combined structure of the light blocking plate, the lens shading device and the lens. Fig. 7 is a perspective view showing the three-dimensional combination of the light barrier, the lens shading device and the lens in the sixth view. Lens 11 lens hood U light barrier 15 篡 篡 [main component symbol description] 1 rear projection display device 10 optical machine body 0 102 lighting module 111 opening 14 effective image 17 mirror 2 rear projection display device 20 optical engine 202 optical machine Main body 211 cover body part 2〇1 lens 21 lens shading device 212 light shielding part M318140 213 opening 22 light blocking plate 221 opening 25 screen 30 housing 27 mirror