The utility model provides a caution board including a rating plate, a luminous caution device, an acoustic caution device and a caution control unit. The utility model has the advantages that the caution board with an audible-visual device has a simple structure, and is easy to identify and availab.....
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本發明可應用於顯示器, 街燈, LCD背光, 照明系統等。本實用新型公開了一種有機電致發光器件(OLED), 摻雜熱穩定性高及傳輸能力佳的空穴注入材料,可降低器件的驅動電壓,提高發光效率, 且空穴注入層的厚度不影響器件的性能,從而減少由於氣化物透明陽極薄膜材料表面粗糙而對OLED器件壽命的影響.
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The invention provides a side emitting light emitting diode light source within the lens. Its role is to change the light emitting diode chip emitting direction, most of the light from the side of the light emitting diode chip along the central vertical axis of the very small angle inward gathered a.....
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Disclosed is an extendible emergency bump guard post arranged underground comprising a base with open top, a post placed in the base not in use and in vertical place in use and a protecting hood movably connected with one end of the base, wherein when the post is located in the vertical or horizonta.....
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