201248069 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種燈條裝置，特別是指一種應用於 LED封裝結構的燈條裝置。 【先前技術】 參閱圖1，以往的一種燈條裝置i包含一背板u、一黏 結於該背板11上的燈條12，及一黏結於該背板u與該燈 條12間的雙面膠材13。該背板u包括一底板部^，及一 連接該底板部111側邊的内板部112，而該燈條12包括一 黏結於該内板部112内側面的電路板121，及複數安裝於該 電路板121的發光元件122。 該雙面膠材13由於散熱功能不佳，容易造成該燈條12 與該背板11間的廢熱囤積、排熱困難，而在該雙面膠材13 中添加導熱材料，仍無法有效提升該雙面膠材13的散熱功 能，此外，由於該雙面膠材13的黏性隨溫度升高而減弱， 使得長時間熱㈣，該燈條12與該背板u 的結構強度不 足，進而衍生該燈條12與該背板11剝離、燈條12翹曲等 問題。 參閱圖2,以往另一種連接該燈條12與該背板u的方 式為利用螺絲14鎖固，但由於螺絲頭佔有一定的寬度使 該等發光元件122間距離過遠而造成亮度分佈不均的光學 問題。 因此，一種可以強化該燈條12與該背板u結合強度， 且可以避免衍生光學問題的燈條裝置i，為目前相關業者的 4 201248069 研發目標之一。 【發明内容】 因此，本發明之目的，即在提供一種可以強化結構強 度且可以避免衍生光學問題的燈條裝置。 於是’本發明燈條裝置包含一背板、一燈條、一蓋板 ’及一定位單元’該背板包括一底板部，及一連接該底板 部側邊的内板部’該燈條包括一設置於該内板部内側面的 電路板’及複數安裝於該電路板的發光元件，該蓋板包括 一頂板部，及一連接該頂板部側邊的外板部，該定位單元 包括一開設於該背板底板部與蓋板頂板部其中一者的銷孔 ’及一自該底板部與頂板部另外一者朝該銷孔延伸的插銷 〇 本發明之功效在於’該插銷插置於該銷孔中連結該背 板與該蓋板的同時’該插銷同步將該燈條抵靠於該背板上 ’而透過限制該插銷的寬度，將可有效避免光學問題的衍 生。 【實施方式】 有關本發明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數個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内谷中，類似的元件是以相同的編號來表示。 參閱圖3與圖4，本發明燈條裝置之第一較佳實施例包 含-背板2、-燈條3、_蓋板4，及—定位單元5。 201248069 該背板2包括一底板部21，及一連接該底板部21側邊 的内板部22。 該燈條3包括一設置於該内板部22内側面的電路板31 ，及複數安裝於該電路板31的發光元件32，在本第一較佳 貫把例中是採用發光二極體，該等發光元件可以是發光 晶片或發光二極體。 該蓋板4包括一頂板部41，及一連接該頂板部41側邊 的外板部42，該背板2内板部22位於該燈條3電路板31 與該蓋板4外板部42間。 該定位單元5包括一開設於該背板2底板部21與蓋板 4頂板部41其中一者的銷孔51、一自該底板部21與頂板 部41另外一者朝該銷孔51延伸的插銷52、一自該插銷52 朝該燈條3凸出的卡抵部53，及一形成於該插銷52末端的 勾部54，其中，該銷孔51為貫穿孔，該勾部54勾抵於該 銷孔51孔緣。 該燈條裝置可以依規格尺寸等條件，而設置有不同數 量的定位單元5。 在本第一較佳實施例中，該銷孔51開設於該背板2的 底板部21 ’且該銷孔51緊鄰該燈條3電路板31設置，該 插銷52自該蓋板4頂板部41朝該背板2底板部21延伸， 在組裝狀態時，該插銷52插置於該銷孔5丨中連結該背板2 與該蓋板4的同時’該插銷52同步將該燈條3抵靠於該背 板2内板部22上，且透過該卡抵部53強化該背板2與燈 條3間的結構強度，而透過限制該插銷52的寬度，使得該 201248069 等發光元件32的間距不受該插銷52影響，將可有效避免 光學問題的衍生。 參閱圖5，本發明燈條裝置的第二較佳實施例與該第一 較佳實施例構件與組裝方式大致相同，不同處在於該第二 較佳實施例中，該銷孔51與該插銷52相反設置，也就是 該銷孔51開設於該蓋板4的頂板部41，該插銷52則自該 背板2的底板部21朝該蓋板4頂板部41延伸，組裝時， 將該燈條3設置於該插銷52與該背板2的内板部22間， 即可透過該卡抵部53將該燈條3抵靠於該背板2内板部22 ，而再透過該插銷52與該銷孔51的結合，可以連結該背 板2與該蓋板4。 综上所述，該插銷52插置於該銷孔51連結該背板2 與該蓋板4時，該插銷52同步將該燈條3抵靠於該背板2 上，且透過該卡抵部53強化該背板2與燈條3間的結構強 度，而限制該插銷52的寬度將可避免亮度分佈不均的光學 問題的衍生，故確實能達成本發明之目的。 准以上所述者’僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是立體圖，說明以往的一種燈條裝置的一背板及 一燈條； 圖2是立體圖，說明以往的另一種燈條裝置的該背板 201248069 及該燈條； 圖3是立體圖，說明本發明燈條裝置的第一較佳實施 例；及 圖4是剖面圖，說明本第一較佳實施例的一定位單元 連結一背板、一蓋板及定位一燈條；及 圖5是剖面圖，說明本發明燈條裝置的第二較佳實施 201248069 【主要元件符號說明】 2…… •…背板 41…. .....頂板4 21..... •…底板部 42.... ••…外板部 22 •…内板部 5…… .....定位單元 Q ...... ς 1 *7J >且惊 3 1 · · * ·- .....鋼札 31 •…電路板 52...·. •…插銷 32··..· •…發光元件 53 …·. …··卡抵部 4…… •…蓋板 54 ••…勾部201248069 VI. Description of the Invention: [Technical Field] The present invention relates to a light bar device, and more particularly to a light bar device applied to an LED package structure. [Previous Art] Referring to FIG. 1 , a conventional light bar device i includes a back plate u, a light bar 12 bonded to the back plate 11 , and a double bond between the back plate u and the light bar 12 . Face rubber 13. The backplane u includes a bottom plate portion and an inner plate portion 112 connected to the side of the bottom plate portion 111. The light bar 12 includes a circuit board 121 bonded to the inner side surface of the inner plate portion 112, and the plurality of circuit boards 121 are mounted on the inner side of the inner plate portion 112. The light-emitting element 122 of the circuit board 121. The double-sided adhesive material 13 is difficult to cause waste heat accumulation and heat dissipation between the light bar 12 and the back plate 11 due to poor heat dissipation function, and the addition of the heat conductive material to the double-sided adhesive material 13 cannot effectively improve the double-sided adhesive material 13 The heat dissipation function of the double-sided adhesive material 13 is further reduced because the viscosity of the double-sided adhesive material 13 is weakened with an increase in temperature, so that the structural strength of the light strip 12 and the back sheet u is insufficient for a long time of heat (4), and further The light bar 12 is separated from the back plate 11 and the light bar 12 is warped. Referring to FIG. 2, another way of connecting the light bar 12 and the back plate u is to use a screw 14 to lock, but because the screw head occupies a certain width, the distance between the light-emitting elements 122 is too far, resulting in uneven brightness distribution. Optical problem. Therefore, a light bar device i capable of strengthening the bonding strength between the light bar 12 and the back plate u and avoiding the problem of derivative optics is one of the research and development targets of the current related industry 4 201248069. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a light bar apparatus that can enhance structural strength and avoid derivative optical problems. Thus, the light bar device of the present invention comprises a back plate, a light bar, a cover plate and a positioning unit. The back plate includes a bottom plate portion and an inner plate portion connecting the side edges of the bottom plate portion. a circuit board disposed on an inner side surface of the inner panel portion and a plurality of light-emitting components mounted on the circuit board, the cover plate includes a top plate portion, and an outer plate portion connecting the side edges of the top plate portion, the positioning unit includes an opening a pin hole ' of one of the back plate bottom plate portion and the cover top plate portion and a latch extending from the bottom plate portion and the top plate portion toward the pin hole 〇 the effect of the present invention is that the plug is inserted into the pin In the pin hole, the back plate is coupled with the cover plate, and the pin is synchronously pressed against the back plate. By limiting the width of the pin, the optical problem can be effectively avoided. The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 3 and 4, a first preferred embodiment of the light bar assembly of the present invention comprises a backing plate 2, a light bar 3, a cover plate 4, and a positioning unit 5. 201248069 The backboard 2 includes a bottom plate portion 21 and an inner plate portion 22 that connects the side edges of the bottom plate portion 21. The light bar 3 includes a circuit board 31 disposed on an inner side surface of the inner panel portion 22, and a plurality of light-emitting elements 32 mounted on the circuit board 31. In the first preferred embodiment, a light-emitting diode is used. The light emitting elements may be light emitting wafers or light emitting diodes. The cover plate 4 includes a top plate portion 41 and an outer plate portion 42 connecting the side edges of the top plate portion 41. The inner plate portion 22 of the back plate 2 is located on the circuit board 31 of the light bar 3 and the outer plate portion 42 of the cover plate 4. between. The positioning unit 5 includes a pin hole 51 formed in one of the bottom plate portion 21 of the back plate 2 and the top plate portion 41 of the cover plate 4, and one of the bottom plate portion 21 and the top plate portion 41 extending toward the pin hole 51. a latching portion 52, a latching portion 53 projecting from the latching member 52 toward the light strip 3, and a hook portion 54 formed at an end of the latching pin 52, wherein the pinhole 51 is a through hole, and the hook portion 54 is hooked At the edge of the pin hole 51. The light bar device can be provided with a different number of positioning units 5 depending on conditions such as size. In the first preferred embodiment, the pin hole 51 is defined in the bottom plate portion 21 ′ of the back plate 2 , and the pin hole 51 is disposed adjacent to the circuit board 31 of the light bar 3 , and the pin 52 is from the top plate portion of the cover plate 4 . 41 extends toward the bottom plate portion 21 of the back plate 2, and in the assembled state, the pin 52 is inserted into the pin hole 5丨 to join the back plate 2 and the cover plate 4 while the pin 52 synchronizes the light bar 3 Abutting against the inner plate portion 22 of the back plate 2, and strengthening the structural strength between the back plate 2 and the light bar 3 through the card abutting portion 53, and limiting the width of the pin 52 to make the light-emitting element 32 such as 201248069 The spacing is not affected by the pin 52 and will effectively avoid the derivation of optical problems. Referring to FIG. 5, the second preferred embodiment of the light bar device of the present invention is substantially identical to the assembly of the first preferred embodiment, except that the pin hole 51 and the pin are in the second preferred embodiment. 52 is oppositely disposed, that is, the pin hole 51 is opened in the top plate portion 41 of the cover plate 4, and the pin 52 extends from the bottom plate portion 21 of the back plate 2 toward the top plate portion 41 of the cover plate 4. When assembled, the lamp is assembled The strip 3 is disposed between the latch 52 and the inner panel portion 22 of the back panel 2, and the light strip 3 can be abutted against the inner panel portion 22 of the back panel 2 through the latching portion 53 and then passed through the latch 52. The back plate 2 and the cover plate 4 can be coupled to the pin hole 51. In summary, when the pin 52 is inserted into the pin hole 51 to connect the back plate 2 and the cover plate 4, the pin 52 synchronously abuts the light bar 3 against the back plate 2, and passes through the card. The portion 53 strengthens the structural strength between the back plate 2 and the light bar 3, and limiting the width of the pin 52 prevents the optical problem of uneven brightness distribution from being derived, so that the object of the present invention can be achieved. The above-mentioned ones are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention, All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a back plate and a light bar of a conventional light bar device; FIG. 2 is a perspective view showing the back plate 201248069 and the light bar of another lamp bar device of the prior art; 3 is a perspective view showing a first preferred embodiment of the light bar device of the present invention; and FIG. 4 is a cross-sectional view showing a positioning unit of the first preferred embodiment coupled to a back plate, a cover plate, and a light. And FIG. 5 is a cross-sectional view showing a second preferred embodiment of the light bar device of the present invention 201248069. [Main component symbol description] 2... •...back plate 41...... top plate 4 21.... • The bottom plate portion 42.... ••...outer plate portion 22 •...inner plate portion 5.............. positioning unit Q ...... ς 1 *7J > and 3 1 · * ·- ..... 钢札31 •...Circuit board 52...·.•...Latch 32·····•...Light-emitting element 53 ...·.......··卡抵部4... •... Cover 54 ••...hook