201018237 九、發明說明： - 【發明所屬之技術領域】 本發明涉及一種投影裴置。 【先前技術】 投影機廣泛使用於影片播放、照片播放及演 料播放之場合’特別是投影機可以將顯示畫面投^轉資 已有電視機或顯示器所無法達成之大尺寸顯示幕〇大至 投影機適用於空間寬廣且人數眾多之場合。 上，使 先前之投影機結構，是藉由大型之高電壓齒素 ?壓氣體放電燈泡作為投影総之元件，必須配合=或 電燈回路及散熱系統，從而使投影機内部元件結構= 得複雜、耗電，且體積也相對變得較為笨重龐大，除了不 便於隨身攜帶使用外，也不便於隨時安裝使用，而成為會 議室或室内固定不動之配備。 上述先前之投影機體積不僅龐大，且不適合個人普及 ❹化之使用，使用者無法實現便攜式使用。 【發明内容】 有鑑於此’有必要提供一種可實現手持之投影裝置。 一種投影裝置，其包括一上蓋、一下蓋、一電池蓋、 一光機及一電路板。所述下蓋包括一光機容置區及一電性 容置區，在所述光機容置區及電性容置區之間開設有一電 性連接槽，在所述電性容置區内凹陷形成一電池槽，所述 電池槽通過電性連接槽與所述光機容置區相連通。所述光 機容置於光機容置區，所述電路板固設於電性容置區。所 7 201018237 之一側卡設於下蓋，所述電池蓋 述上蓋從光機容置區所在 卡設於下蓋之電池槽上。 相較於先前技術，本發明通過將投影裝置内各元件小 型化及緊凑性配置，使整個投影裝置之體積減小，從而可 實現投影裝置之手持。 【實施方式】 以下將結合附圖對本發明作進一步之詳細說明。 如圖1所示，本發明實施方式所提供之投影裝置100 〇包括一上蓋10、一下蓋2〇、一電池蓋30、一光機40、一 電路板50、一電池60及—按鍵7(^所述光機4〇、電路板 5〇及電池60固設於所述下蓋2〇内，所述上蓋1〇及電池 蓋30分別卡設於下蓋20之兩側。 如圖2所示，所述上蓋包括一底板n及形成在底 板11兩侧之兩側壁15,在所述底板n上靠近所述侧壁15 之位置處設置有多個第一連接柱12,所述第一連接柱12 用於與所述下蓋20相固定連接。在所述上蓋10之底板11 上靠近底板11 一端之位置處設置有一貫穿該底板u之按 鍵孔13，在底板11另一端設置有一第一鏡頭容置區14。 所述按鍵70固定在所述按鍵孔13内，並與電路板50相電 性連接，用於控制投影袈置1〇〇之投影。所述第一鏡頭容 置區14為底板11上背離所述侧壁15之延伸方向所形成之 一拱形凹槽’所述第一鏡頭容置區14包覆於光機40之上 表面。在所述第一鏡頭容置區14内固設有兩個固定端 141，其用於使光機4〇保持固定。在所述其中一侧壁15 201018237 上靠近按鍵孔之位置處設有至少一個電性連接孔i51 ’ 所述電性連接孔151用於投影裝置100内部元件與外部設 備進行電性連接。在另一侧壁15上設有一第一卡鉤152， 所述第一卡鉤152用於與所述下蓋2〇進行卡合。所述底板 11上罪近所述電性連接孔151所在側壁I? 一側之第一連 接柱12通過一第一遮罩層與其相鄰之側壁υ相連接。 如圖3、圖4及圖5所示，所述下蓋2〇包括一第一下 蓋201及第二下蓋202。所述第一下蓋2〇1包括一下前蓋 ❹21、一下後蓋22、兩個第一下側蓋2〇11及一第一承載板 2012。所述下前蓋21、下後蓋22及第一下側蓋2〇11固設 於第一承載2012上，所述下前蓋21與下後蓋22分別固設 在所述兩塊第一下侧蓋2011之兩端。在所述第一下蓋201 之下前蓋21上開設有一鏡頭孔211，用於光機4〇之投影 光線射出。所述第二下蓋202包括兩個第二下侧蓋2021 及一第二承載板2022，所述兩個第二下侧蓋2〇21分別固 設於第二承載板2022兩側。在所述第一、第二下蓋201、 ❹202上設有相對應之第二卡扣2〇23和第二卡槽2〇13所述 第二下蓋202通過所述第二卡扣2〇23和第二卡槽2〇13卡 合於第一下蓋201上，並組合形成所述下蓋2〇。所述第一 下蓋201固設於所述上蓋2〇及第二下蓋2〇2之間。為降低 成本，作為投影裝置外殼之上蓋1〇與下蓋2〇 一般採用塑 性材料製成’但為提高投影裝置之散熱能力將下蓋2〇分為 第一下蓋201及第二下蓋2〇2，且所述第二下蓋2〇2採用 塑性材料製成，所述第一下蓋2〇1採用導熱材料製成，用 於將光機40所產生之熱量平均之分配到第一下蓋2〇1上， 201018237 可有效增加光機4〇之散熱面積’防止光機40局部溫度過 高’損壞光機40内之光學元件，從而影響投影裝置1〇〇 之成像效果。 由所述第一下蓋201及第二下蓋202組合而成之下蓋 20包括一位於第一下蓋2〇1上之下前蓋21、一位於第一下 蓋201上之下後蓋22、兩塊由第一下蓋201和第二下蓋202 之第一、第二下側蓋2〇11、2021組成之下側蓋23及一由 第一下蓋201和第二下蓋2〇2之第一、第二承載板2〇12、 ❹2022組成之承載板24。所述下前蓋21及下後蓋22分別固 設在所述兩塊下侧蓋23之兩側。所述下前蓋21、下後蓋 22及兩塊下侧蓋23固設於所述承載板24上，並形成一容 置區域26。在所述容置區26設置有一連接在所述兩塊下 侧蓋23之間之電性連接槽29。所述電性連接槽29將容置 區域26分為一光機容置區27及一電性容置區28,所述光 機容置區27靠近所述下前蓋在所述光機容置區27之 承載板24上設有多個與所述上蓋10之第一連接柱12相對 ❹應之第一連接孔271及多個用於與光機40相固定之第二連 接柱272。在該光機容置區27之承載板24上還設置有一 第二鏡頭容置區273，所述第二鏡頭容置區273包覆於光 機40之下表面。在所述光機容置區27之下側蓋23上活動 設置有一調焦桿231，用於對固設於光機容置區27内之光 機40進行調焦。在所述電性容置區28之承載板24上凹陷 形成一電池槽281 ’其用於容納電池60。所述電池槽281 通過電性連接槽29與所述光機容置區27相連通，用於使 電池60可為投影裝置100提供電力。在該電性容置區28 201018237 之承載板24上與電池槽281相對之一面設置有至少一個第 三連接柱282，用於與所述電路板5〇相固定連接。在所述 電性容置區28内之承載板24與電池槽281相對之一面上 還固設有多個承載塊283，用於承載固設於電性容置區28 上之電路板50。在所述承載板24上朝向電池蓋30所在一 側之邊緣上設置有一凸台284、一切口 285及一電池卡槽 286，所述凸台284與電池卡槽286用於與電池蓋3〇相卡 合，使電池蓋30更穩定之固設在所述下蓋2〇上。所述切 ❹口 285用於方便使用者從電池槽281内取出電池60。在所 述電性容置區28之下側蓋23上還設有與上蓋1〇上之第一 卡釣152相對應之第一卡槽287 ’用於與上蓋1〇之第一卡 鉤152相卡合’將上蓋1〇固設於下蓋2〇上。 如圖1所示，所述光機40包括一鏡頭41及一光學引 擎42’所述光學引擎42包括一進光部421及一出光部 422，所述鏡頭41與所述進光部421沿同一方向分別垂直 於出光部422之兩端，在所述鏡頭41上設有一調焦凸塊 ❹411，用於對鏡頭1〇進行調焦。所述光機40上設有多個與 下蓋20之第二連接柱272相對應之第二連接孔43，用於 將光機40固定在所述下蓋20之光機容置區27内。 所述電池蓋30包括兩個相對之侧邊31，連接該兩個 側邊31之第一頂邊32,與該第一頂邊32相對之第一底邊 33及面向電池槽281之内表面34。在内表面34之兩個侧 邊31及第一頂邊32上分別固設有多個固定卡鉤35，在内 表面31上罪近所述第一底邊33處设有一凹槽36，所述固 定卡鉤35及凹槽36分別與承載板24上電池卡槽286及凸 11 201018237 台284相配合’使電池蓋3〇緊密之卡合 如圖1及圖6所示，在 蓋20 入$，丨mo之鏡頭客替「 先將光機40組 入到下蓋20之鏡碩谷置區28内，使光 置於上蓋1〇之第-鏡頭容置區14:= 40之鏡頭41谷 署π t間。再使所、t 及下蓋2〇之第二鏡頭容 置£ 273之 €斤攻調焦凸塊411與活設於下蓋 20上之調f、撥桿23^目卡合，用於對光機仙進行調焦。 然後使光機⑽上之第二連接孔43與固設在光機容置區域 27之承載板24上之第二連接柱272相配合。再將所述電 ❹ 路板50固設於電性容置區28之承載板24之承載塊283 上，並使所述電路板50與所述電性容置區28之承載板24 上之第三連接柱282相固定。所述電池6〇組入到電池槽 281内，所述電路板50通過電性連接槽27與電池6〇相電 性相連，所述電池60為電路板50提供電源。在本實施方 式中，所述電池60為鋰電池。然後，再將上蓋10從下蓋 20之光機容置區27方向卡設到所述下蓋20上，使位於上 蓋10上之第一卡鉤152及第一連接柱12分別與下蓋2〇 ❹上之第一卡槽287及第一連接孔271相固定，所述按鍵7〇 卡設於上蓋10按鍵孔13與電路板50之間，通過按壓按鍵 70，可控制位於電路板50上之感應裝置控制投影機開關。 所述電池蓋30從下蓋20之電池槽281方向卡設於所述下 蓋10,所述固定卡鉤35卡設於電性容置區28之承栽板24 上之電池卡槽286内，所述凹槽36與電池槽281邊緣上之 凸台284相配合。 本發明通過將投影裝置内各元件小型化及緊凑性配 置，使整個投影裝置之體積減小，且可實現投影裝置之手 12 201018237 . 持。 綜上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施方式，本 發明之範圍並不以上述實施方式為限，舉凡熟悉本案技藝 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1為本發明實施方式所提供之投影裝置之分解示意 ❹圖。 圖2為圖1中投影裝置之上蓋之立體示意圖。 圖3為圖1中投影裝置之下蓋之第一角度立體示意 圖。 圖4為圖1中投影裝置之下蓋之第二角度立體示意 圖。 圖5為圖1中投影裝置之下蓋之分解示意圖。 圖6為圖1中投影裝置之組合示意圖。 【主要組件符號說明】 投影裝置 100 上蓋 10 底板 11 第一連接柱 12 按鍵孔 13 第一鏡頭容置區 14 固定端 141 侧壁 15 電性連接孔 151 第一卡鉤 152 第一遮罩層 16 下蓋 20 13 201018237 , 第一下蓋 201 第二下蓋 202 下前蓋 21 下後蓋 22 第一下侧蓋 2011 第一承載板 2012 鏡頭孔 211 第二下側蓋 2021 第二承載板 2022 第二卡扣 2023 第二卡槽 2013 下侧蓋 23 承載板 24 容置區域 26 光機容置區 27 電性容置區 28 ©電性連接槽 29 第一連接孔 271 第二連接柱 272 第二鏡頭容置區 273 調焦桿 231 電池槽 281 第三連接柱 282 承載塊 283 凸台 284 切口 285 電池卡槽 286 第一卡槽 287 電池蓋 30 側邊 31 第一頂邊 32 第一底邊 33 Q 内表面 34 固定卡鉤 35 凹槽 36 光機 40 鏡頭 41 調焦凸塊 411 光學引擎 42 進光部 421 出光部 422 第二連接孔 43 電路板 50 電池 60 按鍵 70 Η201018237 IX. Description of the invention: - Technical field to which the invention pertains The invention relates to a projection device. [Prior Art] The projector is widely used in video playback, photo playback, and material playback. In particular, the projector can transfer the display screen to a large-size display that cannot be achieved by an existing TV or display. The projector is suitable for applications with a wide space and a large number of people. In the past, the structure of the previous projector is made up of a large high-voltage tooth-pressure gas-discharged light bulb as a component of the projection device, which must be matched with the = or the lamp circuit and the heat dissipation system, so that the internal component structure of the projector is complicated. Power consumption, and the volume has become relatively bulky and bulky, in addition to being inconvenient to carry around, it is also not easy to install and use at any time, and become a fixed meeting room or indoor. The above-mentioned previous projectors are not only bulky, but also unsuitable for personal use and use, and users cannot implement portable use. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a projection device that can realize handheld operation. A projection device includes an upper cover, a lower cover, a battery cover, a light machine and a circuit board. The lower cover includes a optomechanical receiving area and an electrical accommodating area, and an electrical connecting slot is defined between the optomechanical receiving area and the electrical accommodating area, and the electrical receiving area is The inner recess forms a battery slot, and the battery slot communicates with the optical machine receiving area through an electrical connection slot. The optomechanical device is disposed in the accommodating area of the optomechanical device, and the circuit board is fixed in the electrical accommodating area. One of the 7201018237 cards is disposed on the lower cover, and the battery cover is attached to the battery slot of the lower cover from the accommodating area of the optical machine. Compared with the prior art, the present invention can reduce the volume of the entire projection device by miniaturizing and compacting the components in the projection device, thereby realizing the handheld device. [Embodiment] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings. As shown in FIG. 1 , the projection apparatus 100 of the embodiment of the present invention includes an upper cover 10 , a lower cover 2 , a battery cover 30 , a light machine 40 , a circuit board 50 , a battery 60 , and a button 7 ( The optical unit 4, the circuit board 5, and the battery 60 are fixed in the lower cover 2, and the upper cover 1 and the battery cover 30 are respectively disposed on both sides of the lower cover 20. The upper cover includes a bottom plate n and two side walls 15 formed on two sides of the bottom plate 11, and a plurality of first connecting posts 12 are disposed on the bottom plate n near the side walls 15, the first The connecting post 12 is fixedly connected to the lower cover 20. The bottom plate 11 of the upper cover 10 is provided with a button hole 13 extending through the bottom plate 11 at a position close to one end of the bottom plate 11, and the other end of the bottom plate 11 is provided with a first a lens receiving area 14. The button 70 is fixed in the button hole 13 and electrically connected to the circuit board 50 for controlling the projection of the projection device 1 . 14 is an arched groove formed on the bottom plate 11 away from the extending direction of the side wall 15; the first lens receiving area 14 is covered by The upper surface of the optical machine 40. Two fixed ends 141 are fixed in the first lens accommodating area 14 for holding the optical machine 4 。 fixed on the side wall 15 201018237 At least one electrical connection hole i51 ′ is disposed at the position of the hole. The electrical connection hole 151 is used for electrically connecting the internal components of the projection device 100 with an external device. A first hook 152 is disposed on the other sidewall 15 . The first hook 152 is configured to engage with the lower cover 2 . The first connecting post 12 on the side of the side wall I? A mask layer is connected to the adjacent side wall 。. As shown in FIG. 3, FIG. 4 and FIG. 5, the lower cover 2 includes a first lower cover 201 and a second lower cover 202. The cover 2〇1 includes a front cover ❹21, a lower rear cover 22, two first lower side covers 2〇11 and a first carrier plate 2012. The lower front cover 21, the lower rear cover 22 and the first lower side cover The second front cover 21 and the lower rear cover 22 are respectively fixed to the two ends of the two first lower side covers 2011. A lens aperture 211 is defined in the front cover 21 for projecting light from the optical unit 4 . The second lower cover 202 includes two second lower side covers 2021 and a second carrier plate 2022. Two second lower side covers 2〇21 are respectively fixed on two sides of the second carrier plate 2022. The first and second lower covers 201 and 202 are provided with corresponding second buckles 2〇23 and The second lower cover 202 of the second card slot 2 is engaged with the first lower cover 201 through the second buckle 2〇23 and the second card slot 2〇13, and is combined to form the lower cover 2〇 The first lower cover 201 is fixed between the upper cover 2 〇 and the second lower cover 2 〇 2 . In order to reduce the cost, the cover 1 〇 and the lower cover 2 作为 are generally made of plastic material as the outer casing of the projection device. However, in order to improve the heat dissipation capability of the projection device, the lower cover 2 is divided into a first lower cover 201 and a second lower cover 2 〇2, and the second lower cover 2〇2 is made of a plastic material, and the first lower cover 2〇1 is made of a heat conductive material for distributing the heat generated by the optical machine 40 to the first one. On the lower cover 2〇1, 201018237 can effectively increase the heat dissipation area of the optical machine 4' to prevent the local temperature of the optical machine 40 from being too high' to damage the optical components in the optical machine 40, thereby affecting the imaging effect of the projection device. The lower cover 20 is composed of a first lower cover 201 and a second lower cover 202. The lower cover 20 includes a front cover 21 located below the first lower cover 201 and a lower cover on the lower cover 201. 22. Two lower side covers 23 composed of first and second lower side covers 2〇11, 2021 of the first lower cover 201 and the second lower cover 202, and a first lower cover 201 and a second lower cover 2 The carrier plate 24 composed of the first and second carrier plates 2〇12 and 2022 of the 〇2. The lower front cover 21 and the lower rear cover 22 are respectively fixed to both sides of the two lower side covers 23. The lower front cover 21, the lower rear cover 22 and the two lower side covers 23 are fixed to the carrier plate 24 and form a receiving area 26. An electrical connection groove 29 connected between the two lower side covers 23 is disposed in the accommodating area 26. The electrical connection slot 29 divides the accommodating area 26 into a optomechanical accommodating area 27 and an electrical accommodating area 27, and the optomechanical accommodating area 27 is adjacent to the lower front cover in the optical unit The carrier plate 24 of the receiving area 27 is provided with a plurality of first connecting holes 271 corresponding to the first connecting posts 12 of the upper cover 10 and a plurality of second connecting posts 272 for fixing to the optical machine 40. A second lens receiving area 273 is further disposed on the carrier plate 24 of the optomechanical housing area 27, and the second lens accommodating area 273 is wrapped around the lower surface of the illuminator 40. A focusing rod 231 is disposed on the lower cover 23 of the optomechanical housing area 27 for focusing the illuminator 40 fixed in the accommodating area 27 of the optomechanical unit. A battery slot 281' is recessed in the carrier plate 24 of the electrical receiving area 28 for receiving the battery 60. The battery slot 281 is in communication with the opto-mechanical receiving area 27 via an electrical connection slot 29 for enabling the battery 60 to provide power to the projection device 100. At least one third connecting post 282 is disposed on the carrying plate 24 of the electrical receiving area 28 201018237 opposite to the battery slot 281 for fixed connection with the circuit board 5 . A plurality of load-bearing blocks 283 are further disposed on a side of the carrier plate 24 and the battery-slot 281 in the electrical receiving area 28 for carrying the circuit board 50 fixed on the electrical receiving area 28. A boss 284, a port 285 and a battery card slot 286 are disposed on the edge of the carrying plate 24 facing the side of the battery cover 30. The boss 284 and the battery card slot 286 are used for the battery cover 3 When the phases are engaged, the battery cover 30 is fixed to the lower cover 2〇 more stably. The cutting port 285 is for facilitating the user to take out the battery 60 from the battery slot 281. A first card slot 287 ′ corresponding to the first card fishing 152 on the upper cover 1 is further disposed on the lower cover 23 of the electrical receiving area 28 for the first hook 152 of the upper cover 1 The phase engagement 'fixes the upper cover 1〇 to the lower cover 2〇. As shown in FIG. 1 , the optical machine 40 includes a lens 41 and an optical engine 42 ′. The optical engine 42 includes a light entering portion 421 and a light exiting portion 422 , and the lens 41 and the light entering portion 421 are along The same direction is perpendicular to both ends of the light exiting portion 422, and a focusing bump 411 is disposed on the lens 41 for focusing the lens 1 。. The optical machine 40 is provided with a plurality of second connecting holes 43 corresponding to the second connecting posts 272 of the lower cover 20 for fixing the optical machine 40 in the optomechanical receiving area 27 of the lower cover 20. . The battery cover 30 includes two opposite side edges 31, and a first top edge 32 connecting the two side edges 31, a first bottom edge 33 opposite the first top edge 32 and an inner surface facing the battery slot 281 34. A plurality of fixing hooks 35 are respectively fixed on the two side edges 31 and the first top edge 32 of the inner surface 34, and a groove 36 is disposed on the inner surface 31 near the first bottom edge 33. The fixing hooks 35 and the recesses 36 are respectively matched with the battery card slots 286 and the protrusions 11 201018237 284 of the carrier board 24, so that the battery cover 3 is tightly engaged as shown in FIG. 1 and FIG. 6, and the cover 20 is inserted. $, 丨mo lens for the "first light machine 40 into the lower cover 20 of the mirror Shuo Valley area 28, so that the light placed on the top cover 1 第 - lens accommodation area 14: = 40 lens 41 Between the two departments, the second lens of the t, the lower cover and the lower cover is accommodated with a 273 focus and a focus adjustment knob 411 which is placed on the lower cover 20 and a lever 23 Engagement for focusing the optical machine. Then, the second connecting hole 43 on the optical machine (10) is matched with the second connecting post 272 fixed on the carrying plate 24 of the optical machine receiving area 27. The electrical circuit board 50 is fixed on the carrying block 283 of the carrying board 24 of the electrical receiving area 28, and the circuit board 50 and the carrying board 24 of the electrical receiving area 28 are The three connection posts 282 are fixed. The battery 6 The circuit board 50 is electrically connected to the battery 6 through the electrical connection slot 27, and the battery 60 provides power to the circuit board 50. In the embodiment, the battery 60 is Then, the upper cover 10 is latched from the optomechanical receiving area 27 of the lower cover 20 to the lower cover 20, so that the first hook 152 and the first connecting post 12 on the upper cover 10 respectively The first card slot 287 and the first connecting hole 271 are fixed on the lower cover 2, and the button 7 is clamped between the button hole 13 of the upper cover 10 and the circuit board 50, and can be controlled to be located in the circuit by pressing the button 70. The sensor device on the board 50 controls the projector switch. The battery cover 30 is latched from the battery cover 281 of the lower cover 20 to the lower cover 10, and the fixed hook 35 is locked in the electrical receiving area 28. In the battery card slot 286 on the bearing plate 24, the recess 36 cooperates with the boss 284 on the edge of the battery slot 281. The present invention makes the entire projection by miniaturizing and compacting the components in the projection device. The volume of the device is reduced, and the hand of the projection device can be realized 12 201018237. In summary, the present invention In accordance with the invention patent requirements, the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art can assist the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a projection apparatus according to an embodiment of the present invention. FIG. 3 is a perspective view of the upper cover of the projection device. FIG. 3 is a perspective view of the first angle of the lower cover of the projection device of FIG. Figure 4 is a perspective view showing the second angle of the lower cover of the projection device of Figure 1. FIG. 5 is an exploded perspective view of the lower cover of the projection device of FIG. 1. FIG. FIG. 6 is a schematic diagram of the combination of the projection device of FIG. 1. FIG. [Main component symbol description] Projection device 100 Upper cover 10 Base plate 11 First connecting post 12 Key hole 13 First lens receiving area 14 Fixed end 141 Side wall 15 Electrical connection hole 151 First hook 152 First mask layer 16 Lower cover 20 13 201018237 , First lower cover 201 Second lower cover 202 Lower front cover 21 Lower rear cover 22 First lower side cover 2011 First carrier plate 2012 Lens hole 211 Second lower side cover 2021 Second carrier plate 2022 Two buckles 2023 Second card slot 2013 Lower side cover 23 Carrier board 24 accommodating area 26 Optical machine accommodating area 27 Electrical accommodating area 28 © Electrical connection slot 29 First connection hole 271 Second connection post 272 Second Lens accommodating area 273 focusing rod 231 battery slot 281 third connecting post 282 bearing block 283 boss 284 slit 285 battery card slot 286 first card slot 287 battery cover 30 side 31 first top edge 32 first bottom edge 33 Q Inner surface 34 Fixing hook 35 Groove 36 Light machine 40 Lens 41 Focusing projection 411 Optical engine 42 Light-in part 421 Light-emitting part 422 Second connection hole 43 Circuit board 50 Battery 60 Button 70 Η