M410837 五、新型說明： 【新型所屬之技術領域】 本創作係有關於照明裝置，尤指一種以發光二極體為光 源’且發光二極體發光產生的熱能可傳遞至燈座，以提供良 好散熱效果之發光二極體燈具。 【先前技術】 發光二極體（light emitting diode ; LED)是一種半導體 • 元件，其具有高亮度、省電、環保等優點，近年來，已逐 漸取代傳統光源，而被廣泛地運用於各種照明裝置中。 請參見圖11所示’為一種現有技術之發光二極體燈 具，其主要結構係於一燈座30上間隔設置有複數日光燈管 40’該曰光燈管40具有一透光罩41及該透光罩41上連接 有一散熱板42’於透光罩41及散熱板42所形成的内部空 間設有一電路板，該電路板上設有複數發光二極體，電路 板與散熱板42相互貼合接觸’藉此，發光二極體產出的亮 • 光可透過透光罩41提供照明，發光二極體發光時產生的熱 能可經由散熱板42予以排除。 然而，上述之發光二極體燈具於實際使用時存在有以 下的缺點：由於散熱板42所提供的散熱效率與其面積大小 有關’而日光燈管40所設的散熱板42的面積有限，故散 熱效果無法提升’發光二極艘產生的熱能無法充分的獲得 排除’過熱的發光二極體的發光效能會降低且使用壽命會 減損’因此，如何增進散熱效率，使發光二極體能在適當 的溫度下穩定發光，實有待加以改良。 p 3 M410837 【新型内容】 有鏗於前述現有技術之缺點’本創作之目的係在於提 供一種燈座及具有該燈座的發光二極體燈具，藉由於燈座 上設計有導熱塊可與日光燈管之電路板相互接觸，使得發 光二極體產生的熱能可透過燈座予以排除，進而達到提升 散熱效率之功效。 為達到前述之創作目的，本創作所設計之燈座，其是 以導熱材質製成’該燈座具有一底板，該底板兩端邊連接 有兩端板’底板兩側邊連接有兩側板，該兩端板相向的内 側面分別設有至少一可移動的插座’各插座遠離端板的内 側面設有一插槽’兩端板所設的插座係相互對應，於底板 表面且位在對應的兩插座之間突伸有一導熱塊。 所述之燈座，其令該端板的板體上貫穿設有至少一組 相鄰的兩定位孔，該定位孔為長形孔，各插座兩側朝向端 板突伸有兩抵掣片’該抵掣片具有彈性且其端部形成有一 卡塊’插座以其兩抵掣片對應貫穿相鄰的兩定位孔中，抵 掣片之卡塊位在端板的外側面，抵掣片可在定位孔中滑 移’使插座可相對於端板進行移動。 所述之燈座’其中該端板遠離底板的一端邊朝向内側 面彎折形成有一定位槽’該插座上朝向端板之定位槽突伸 有一凸柱’一壓縮彈簧設置在該凸柱與端板之定位槽之 間’該壓縮彈簧一端套設於凸柱外侧，另一端固設於端板 之定位槽中。 所述之燈座，其中該端板遠離底板的一端邊朝向内側 面彎折形成有一定位槽，該插座與端板之定位槽之間設置 M410837 有一钮力彈簧’該扭力彈簧樞設於端板的内側面，扭力彈 菁·一端抵擎於端板之定位槽的槽面’另一端抵擎於插座上。 所述之燈座’其中該端板之相鄰的兩定位孔之間的距 離小於插座之兩抵掣片之間的距離，相鄰的兩定位孔分別 於鄰近底板的一端朝向相互遠離的外側延伸有—^孔，該 插座之抵掣片係卡抵於該卡孔中。 * 所述之燈座，其中該導熱塊為一長形塊體，其長軸方 向平行於底板的側邊。 所述之燈座，其中該導熱塊的斷面呈凸字形而具有一 突出面。 一種發光一極鱧燈具，其具有一所述之燈座以及至少 一曰光燈管’該日光燈管對應於該導熱塊設置，該日光燈 管具有一燈罩、一電路板及兩電性接頭，該燈罩為一中空 管體’其管壁一側形成有呈轴向的一開口，於燈罩的該開 口處設置有該電路板’電路板朝向燈罩的内面設有複數發 φ 光二極體，該兩電性接頭分別罩設於燈罩及電路板的兩 端’各電性接頭設有兩導電端子，該導電端子與電路板形 成電性連接’該日光燈管以其電性接頭之導電端子結合於 燈座所設之對應的兩插座之插槽中，且電路板朝向外部的 外面與導熱塊相互貼合接觸》 本創作所提供之燈座及具有該燈座的發光二極體燈 具，可以獲得的優點及功效增進至少包括：利用日光燈管 之電路板與燈座之導熱塊相互接觸，使發光二極體發光時 產生的熱能可傳遞至燈座，透過大面積的燈座有效率的將 熱能予以排除，使發光二極體能確實維持在適當的溫度，2 5 M410837 進而提供發光二極體具有穩定的發光效能與使用壽命。 【實施方式】 請參見圖1至3所示，本創作之發光二極體燈具，其 係包括有一燈座10以及至少一日光燈管2〇，其中： 該燈座10是以導熱材質製成，其具有一底板11,該底 板11兩端邊連接有兩端板12,底板11兩側邊連接有兩側 板1 3 ’該兩端板1 2相向的側面為内側面，朝向外部的侧面 為外側面’各端板12遠離底板1彳的一端邊朝向内侧面蠻 折形成有一定位槽121，端板12的板體上貫穿設有至少一 組相鄰的兩定位孔1 22，該定位孔1 22為長形孔，其長轴 方向為縱向，於圖中所示的實施例為垂直於底板^，於端 板12的内側面設有至少一可移動的插座14，該插座I#兩 側朝向端板12突伸有兩抵掣片141,該抵掣片141具有彈 性且其端部形成有一卡塊14u，插座14遠離端板12的内 側面設有一插槽142,插座14以其兩抵掣片141對應貫穿 相鄰的兩定位孔122中，抵掣片141之卡塊1411位在端板 12的外側面’抵掣片141可在定位孔122中滑移，使插座 14可相對於端板12進行縱向移動，兩端板12所設的插座 係相互對應，於底板1彳表面且位在對應的兩插座，斗之 間突伸有一導熱塊15’該導熱塊15為一長形塊體，其長軸 方向平行於底板11的側邊，導熱塊15的斷面呈凸字形而 具有一突出面151 ; 如圖中所示的第一實施例，該插座14上朝向端板12 之疋位槽121突伸有一凸柱143，一壓縮彈簧16設置在該 凸柱143與端板12之定位槽121之間，該壓縮彈簧16 — M410837 端套設於凸柱143外側，另一端固設於端板12之定位槽 121中； 目 該曰光燈管20的數量與該導熱塊15的數量為相對應 設置，請配合參見圖4所示，該日光燈管2〇具有一燈罩21、 一電路板22及兩電性接頭23，該燈罩21為一中空管體， 其管壁一側形成有呈軸向的一開口 211，使燈罩21的斷面 呈C形，於燈罩21的内壁面且相鄰該開口 211兩側處形成 有兩相對的容置槽212,該電路板22以其兩側邊對應嵌入 該容置槽212中，電路板22朝向燈罩21的内面設有複數 發光二極體221，該兩電性接頭23分別罩設於燈罩21及 電路板22的兩端，各電性接頭23設有兩導電端子231， 該導電端子231與電路板22的電路形成電性連接，該日光 燈管20以其電性接頭23之導電端子231結合於燈座1〇 所設之對應的兩插座14之插槽彳42中，請配合參見圖6所 示，電路板22朝向外部的外面與導熱塊15之突出面151 相互貼合接觸。 請參見圖5所示，本創作第一實施例實際操作曰光燈 管20安裝於燈座10時，先將插座彳4朝向端板12之定位 槽121的方向移動，使壓縮彈簧16壓縮而儲存有彈力，再 將日光燈管20之導電端子231對應插入插座14之插槽 142,請參見圖6所示，進一步將日光燈管2〇旋轉9〇度， 使導電端子231可與插座14内部所設之導電片接觸，日光 燈管20可定位在插座14上，且電路板22對應於導熱塊 15,藉由壓縮彈簧16提供有恢復彈力以推抵插座14，並 帶動日光燈管20朝向燈座1〇之底板η移動進而電路^ 7 M410837 22可確實貼合於導熱塊15之突出面151，如此，發光二極 體221發光時產生的熱能可經由導熱塊15傳遞至燈座 之底板11,利用具有大面積的燈座1〇可有效將熱能予以排 除，進而達到提升散熱效率之目的。M410837 V. New description: [New technical field] This creation is about lighting devices, especially one with a light-emitting diode as the light source' and the heat generated by the light-emitting diode can be transmitted to the lamp holder to provide good Light-emitting diode lamps for heat dissipation. [Prior Art] A light emitting diode (LED) is a semiconductor component that has the advantages of high brightness, power saving, environmental protection, etc. In recent years, it has gradually replaced conventional light sources and is widely used in various lightings. In the device. Referring to FIG. 11 , a light-emitting diode lamp of the prior art is mainly provided with a plurality of fluorescent tubes 40 ′ spaced apart from each other on a socket 30. The neon tube 40 has a transmissive cover 41 and the same. A transparent circuit board 42 is connected to the inner space formed by the transparent cover 41 and the heat dissipation plate 42. The circuit board is provided with a plurality of light emitting diodes, and the circuit board and the heat dissipation plate 42 are attached to each other. In combination, the light produced by the light-emitting diode can be illuminated through the transparent cover 41, and the heat generated by the light-emitting diode can be removed via the heat sink 42. However, the above-mentioned light-emitting diode lamp has the following disadvantages in practical use: since the heat dissipation efficiency provided by the heat dissipation plate 42 is related to the size of the area thereof, and the area of the heat dissipation plate 42 provided by the fluorescent tube 40 is limited, the heat dissipation effect is obtained. It is impossible to improve the heat energy generated by the 'light-emitting diodes'. The luminous efficiency of the overheated LEDs will be reduced and the service life will be degraded. Therefore, how to improve the heat dissipation efficiency and enable the LEDs to be at the proper temperature. Stable luminescence needs to be improved. p 3 M410837 [New content] The disadvantages of the prior art are as follows. The purpose of the present invention is to provide a lamp holder and a light-emitting diode lamp having the same, since the lamp holder is provided with a heat-conducting block and a fluorescent lamp. The circuit boards of the tubes are in contact with each other, so that the heat energy generated by the light-emitting diodes can be removed through the lamp holder, thereby achieving the effect of improving heat dissipation efficiency. In order to achieve the above-mentioned creative purpose, the lamp holder designed by the present invention is made of a heat-conducting material. The lamp holder has a bottom plate, and the two ends of the bottom plate are connected with two end plates. The opposite inner side surfaces of the two end plates are respectively provided with at least one movable socket. The sockets are provided with a slot on the inner side of the end plate. The sockets provided on the two end plates correspond to each other on the surface of the bottom plate and are corresponding to each other. A heat conducting block protrudes between the two sockets. The lamp holder has at least one set of two adjacent positioning holes penetrating through the plate body of the end plate, wherein the positioning hole is an elongated hole, and two sides of each socket protrude toward the end plate with two abutting pieces. 'The yoke piece is elastic and has a card block' socket formed at its end portion. The two gussets are correspondingly inserted through the adjacent two locating holes, and the damper piece is located on the outer side of the end plate, and the damper piece Sliding in the locating hole allows the socket to move relative to the end plate. The lamp holder 'the end of the end plate away from the bottom plate is bent toward the inner side to form a positioning groove. The positioning groove of the socket facing the end plate protrudes with a protrusion. A compression spring is disposed at the protrusion and the end. The one end of the compression spring is sleeved on the outer side of the protruding post, and the other end is fixed in the positioning groove of the end plate. The lamp holder, wherein the end plate is bent away from the one end side of the bottom plate toward the inner side surface to form a positioning groove, and the M410837 has a button force spring between the socket and the positioning groove of the end plate. The torsion spring is pivoted on the end plate The inner side of the torsion is one end of the grooved surface of the positioning groove of the end plate, and the other end is abutted on the socket. The lamp holder 'the distance between two adjacent positioning holes of the end plate is smaller than the distance between the two abutting pieces of the socket, and the adjacent two positioning holes respectively face the outer side away from each other at an end adjacent to the bottom plate The extension has a hole, and the abutting plate of the socket is in the hole of the card. * The lamp holder, wherein the heat conducting block is an elongated block whose longitudinal axis is parallel to the side of the bottom plate. The lamp holder, wherein the heat conducting block has a convex shape in cross section and has a protruding surface. A light-emitting one-pole lamp having a lamp holder and at least one fluorescent tube. The fluorescent tube is disposed corresponding to the heat-conducting tube. The fluorescent tube has a lamp cover, a circuit board and two electrical connectors. The lampshade is a hollow pipe body. The pipe wall side is formed with an opening in the axial direction. The circuit board is disposed at the opening of the lampshade. The circuit board is provided with a plurality of φ photodiodes facing the inner surface of the lampshade. The two electrical connectors are respectively disposed at the two ends of the lamp cover and the circuit board. The electrical connectors are provided with two conductive terminals, and the conductive terminals are electrically connected with the circuit board. The fluorescent tube is coupled to the conductive terminal of the electrical connector. The socket of the two sockets corresponding to the socket and the outer surface of the circuit board and the heat conducting block are in contact with each other. The lamp holder provided by the present invention and the LED lamp having the lamp holder can be obtained. The advantages and enhancements include at least: the circuit board of the fluorescent tube and the heat conducting block of the lamp holder are in contact with each other, so that the heat energy generated when the light emitting diode emits light can be transmitted to the lamp holder, and the lamp holder through the large area has The efficiency of the thermal energy is eliminated, so that the light-emitting diode can be maintained at an appropriate temperature, 2 5 M410837 to provide a luminous diode with stable luminous efficacy and service life. [Embodiment] Referring to Figures 1 to 3, the LED lamp of the present invention comprises a lamp holder 10 and at least one fluorescent tube 2, wherein: the lamp holder 10 is made of a heat conductive material. The bottom plate 11 has a bottom plate 12 connected to both ends thereof, and the two sides of the bottom plate 11 are connected with two side plates 1 3 'the opposite side faces of the two end plates 1 2 are inner side faces, and the outer side faces are outer A positioning groove 121 is formed on the side of the end plate 12 away from the bottom plate 1 , and a plurality of positioning holes 1 22 are formed in the plate body of the end plate 12 . The positioning hole 1 is disposed on the plate body of the end plate 12 . 22 is an elongated hole whose longitudinal direction is a longitudinal direction. The embodiment shown in the figure is perpendicular to the bottom plate, and at least one movable socket 14 is provided on the inner side of the end plate 12, and the socket I# is on both sides. Two abutting pieces 141 are protruded toward the end plate 12, and the abutting piece 141 is elastic and has a block 14u formed at an end thereof. The socket 14 is provided with a slot 142 away from the inner side of the end plate 12, and the socket 14 is provided with two The abutting piece 141 is correspondingly inserted through the two adjacent positioning holes 122, and the block 1411 of the abutting piece 141 is located at the end plate 12. The side yoke piece 141 can slide in the positioning hole 122, so that the socket 14 can be longitudinally moved relative to the end plate 12, and the sockets of the two end plates 12 are corresponding to each other, and are located on the surface of the bottom plate 1 and corresponding thereto. The two sockets protrude from the bucket with a heat conducting block 15'. The heat conducting block 15 is an elongated block whose longitudinal direction is parallel to the side of the bottom plate 11. The heat conducting block 15 has a convex shape and a protruding surface. 151. In the first embodiment shown in the figure, a protrusion 143 protrudes from the clamping slot 121 of the socket 14 toward the end plate 12, and a compression spring 16 is disposed on the positioning slot of the protrusion 143 and the end plate 12. Between 121, the compression spring 16-M410837 is sleeved on the outer side of the protrusion 143, and the other end is fixed in the positioning groove 121 of the end plate 12. The number of the fluorescent tube 20 and the number of the heat-conducting block 15 are For the corresponding arrangement, please refer to FIG. 4, the fluorescent tube 2 has a lamp cover 21, a circuit board 22 and two electrical connectors 23, the lamp cover 21 is a hollow tube body, and one side of the tube wall is formed. An opening 211 in the axial direction, so that the cross section of the lamp cover 21 is C-shaped, on the inner wall surface of the lamp cover 21 and adjacent to the opening Two opposite receiving slots 212 are formed at two sides of the port 211. The circuit board 22 is embedded in the receiving slot 212 with its two sides, and the circuit board 22 is provided with a plurality of LEDs 221 facing the inner surface of the lamp cover 21. The two electrical connectors 23 are respectively disposed at the two ends of the lamp cover 21 and the circuit board 22, and the electrical connectors 23 are provided with two conductive terminals 231. The conductive terminals 231 are electrically connected to the circuit of the circuit board 22, and the fluorescent tubes are electrically connected. 20, the conductive terminal 231 of the electrical connector 23 is coupled to the corresponding sockets 42 of the two sockets 14 of the socket 1 , please refer to FIG. 6 , the outer surface of the circuit board 22 facing the outside and the heat conducting block The protruding faces 151 of 15 are in close contact with each other. Referring to FIG. 5, in the first embodiment of the present invention, when the lamp tube 20 is actually mounted on the lamp holder 10, the socket 彳4 is first moved toward the positioning groove 121 of the end plate 12, so that the compression spring 16 is compressed. The storage is elastic, and the conductive terminal 231 of the fluorescent tube 20 is correspondingly inserted into the slot 142 of the socket 14. Referring to FIG. 6, the fluorescent tube 2 is further rotated by 9 degrees to make the conductive terminal 231 and the socket 14 internal. With the conductive sheet contacted, the fluorescent tube 20 can be positioned on the socket 14, and the circuit board 22 corresponds to the heat conducting block 15, and the compression spring 16 is provided with a resilient force to push against the socket 14, and the fluorescent tube 20 is directed toward the socket 1. The bottom plate η moves and the circuit ^ 7 M410837 22 can be surely attached to the protruding surface 151 of the heat conducting block 15 . Thus, the heat energy generated when the light emitting diode 221 emits light can be transmitted to the bottom plate 11 of the lamp socket via the heat conducting block 15 . The lamp holder 1 with a large area can effectively eliminate the heat energy, thereby achieving the purpose of improving the heat dissipation efficiency.
請參見圖7及8所示，為本創作第二實施例其結構 與第一實施例不同之處在於：該插座14A 鈕力彈簧16A設置在插座14A與端板12A之^位槽121A 之間，該扭力彈簧16A樞設於端板12A的内側面，扭力彈 簧16A —端抵掣於端板12A之定位槽121八的槽面，另一 端抵擎於插座14 A上。 本創作第二實施例實際操作日光燈管20A安裝於燈座 10A的步驟與第一實施例相同，即先將插座14A朝向端板 12A之定位槽121A的方向移動，使扭力彈簧16A扭轉而儲 存有彈力，再將日光燈管20A之導電端子231A對應插入 插座14A之插槽142A並旋轉90度，藉由扭力彈簧16A提 供有恢復彈力以推抵插座14a，進而使電路板22A可確實 貼合於導熱塊15A » 請參見圖9及10所示，為本創作第三實施例，其結構 與第一實施例不同之處在於：該插座14B未設有凸柱及彈 簧，該端板1 2B之相鄰的兩定位孔1 22B之間的距離小於 插座14B之兩抵掣片141B之間的距離，相鄰的兩定位孔 1 2 2 B分別於鄰近底板彳彳B的一端朝向相互遠離的外側橫向 延伸有一卡孔123B，該卡孔123B係供插座14B之抵擎片 1 41 B卡抵定位。 本創作第三實施例實際操作日光燈管20B安裝於燈座 M410837 10B時’先將插座14A之兩抵掣片141B朝向内側壓缩，使 兩抵掣片141B之間的距離縮小而可對應貫穿相鄰的兩定位 孔122B中，再將日光燈管2〇B之導電端子231B對應插入 插座14B之插槽142B，將日光燈管2〇B旋轉9〇度，使日 光燈官2GB定位在插座14B上，且電路板22B對應於導熱 塊15B’進一步將插座14B朝向底板nB的方向移動使 電路板22B可貼合於導熱塊ι5Β，且插座14B之抵掣片“π 卡抵於卡孔123B中，藉以使曰光燈管2〇B完成定位於燈座 10B 上。 【圖式簡單說明】 圖1係本創作第一實施例之立體外觀圖。 圖2係本創作第一實施例之局部分解圖。 圖3係本創作第一實施例之局部剖面圖。 圖4係本創作之日光燈管分解圖。 圖5及6係本創作第一實施例之日光燈管安裝於燈座 之動作圖。 圖7及8係、本創作第二實施例之日光燈管安裝於燈座 之動作圖。 圖9及10係本創作第三實施例之日光燈管安裝於燈座 之動作圖。 圖11係現有技術之立體外觀圖。 【主要元件符號說明】 、10A、10B燈座彳彳、11B底板 12 12A、12B 端板 121、121A 定位槽 9 M410837 122 、122B 定位孔 123B卡孔 13 側板 14、14A、14B 141 、141B 抵掣片 1411卡塊 142 、142A 插槽 143凸柱 15、 15A ' 15B導熱塊 151 突出面 16壓縮彈簧 16A 鈕力彈簧 20、20A、20B 21 燈罩 21 1 開口 212 容置槽 22、22A、22B 221 發光二極體 23電性接頭 231 、231A 、231B 導電端子 30 燈座 40日光燈管 41 透光罩 42散熱板 插座 曰光燈管 電路板Referring to Figures 7 and 8, the second embodiment of the present invention is different in structure from the first embodiment in that the socket 14A button force spring 16A is disposed between the socket 14A and the slot 121A of the end plate 12A. The torsion spring 16A is pivotally disposed on the inner side surface of the end plate 12A. The torsion spring 16A is abutted against the groove surface of the positioning groove 121 of the end plate 12A, and the other end is abutted on the socket 14A. The second embodiment of the present invention is the same as the first embodiment in that the fluorescent tube 20A is mounted on the socket 10A, that is, the socket 14A is first moved toward the positioning groove 121A of the end plate 12A, and the torsion spring 16A is twisted and stored. Elastically, the conductive terminal 231A of the fluorescent tube 20A is correspondingly inserted into the slot 142A of the socket 14A and rotated by 90 degrees, and the torsion spring 16A is provided with a resilient force to push against the socket 14a, so that the circuit board 22A can be surely adhered to the heat conduction. Block 15A » Referring to Figures 9 and 10, a third embodiment of the present invention is different in structure from the first embodiment in that the socket 14B is not provided with a stud and a spring, and the end plate 1 2B is The distance between the adjacent two positioning holes 1 22B is smaller than the distance between the two abutting pieces 141B of the socket 14B, and the adjacent two positioning holes 1 2 2 B are respectively facing the outer side away from each other at an end adjacent to the bottom plate 彳彳B. A card hole 123B is extended, and the card hole 123B is for positioning of the abutting plate 1 41 B of the socket 14B. In the third embodiment of the present invention, when the fluorescent tube 20B is actually mounted on the lamp holder M410837 10B, the two abutting pieces 141B of the socket 14A are first compressed toward the inner side, so that the distance between the two abutting pieces 141B is reduced to correspond to the adjacent one. In the two positioning holes 122B, the conductive terminal 231B of the fluorescent tube 2B is correspondingly inserted into the slot 142B of the socket 14B, the fluorescent tube 2〇B is rotated by 9 degrees, and the fluorescent lamp 2GB is positioned on the socket 14B, and the circuit The plate 22B corresponding to the heat conducting block 15B' further moves the socket 14B toward the bottom plate nB so that the circuit board 22B can be attached to the heat conducting block ι5 Β, and the yoke "" of the socket 14B abuts against the card hole 123B, thereby causing 曰Fig. 1 is a perspective view of the first embodiment of the present invention. Fig. 2 is a partially exploded view of the first embodiment of the present invention. Fig. 3 is a schematic view of the first embodiment of the present invention. Figure 4 is an exploded view of the fluorescent tube of the present invention. Figures 5 and 6 are diagrams showing the operation of the fluorescent tube of the first embodiment of the present invention mounted on the lamp holder. The fluorescent lamp of the second embodiment of the present creation Fig. 9 and Fig. 10 are diagrams showing the operation of the fluorescent tube of the third embodiment of the present invention mounted on the lamp holder. Fig. 11 is a perspective view of the prior art. [Main component symbol description], 10A, 10B Lamp holder 彳彳, 11B bottom plate 12 12A, 12B End plate 121, 121A Locating groove 9 M410837 122, 122B Locating hole 123B Snap hole 13 Side plate 14, 14A, 14B 141, 141B Abutting piece 1411 Block 142, 142A Slot 143 Studs 15, 15A ' 15B Heat-conducting block 151 Projecting surface 16 Compression spring 16A Button force spring 20, 20A, 20B 21 Lamp cover 21 1 Opening 212 accommodating groove 22, 22A, 22B 221 Light-emitting diode 23 Electrical joint 231, 231A , 231B conductive terminal 30 lamp holder 40 fluorescent tube 41 translucent cover 42 heat sink socket twilight tube circuit board