Patent ID: 7306360

Claim:
A decorative lighting device comprising: a light-emitting unit including a plug-in base made from an insulating material, and including upper and lower bodies disposed opposite to each other along an axis, said upper body including an end wall surface that has a cavity extending towards said lower body to define a bulb-receiving space, said lower body including two lateral guiding walls which are opposite to each other in a first transverse direction relative to the axis, and a light bulb having a lower bulb portion, and first and second lead-in wires which extend downwardly and outwardly of said lower bulb portion, and which are configured such that when said lower bulb portion is inserted into said bulb-receiving space, said first and second lead-in wires extend downwardly and outwardly of said upper body of said plug-in base to be located between said two lateral guiding walls in the first transverse direction; a holding unit made from an insulating material and including an inner surrounding wall which extends downwardly along the axis to terminate at an inner surrounding edge, and which has inner and outer wall surfaces opposite to each other in radial directions relative to the axis, an outer surrounding wall which extends downwardly along the axis to terminate at an outer surrounding edge, and which has a surrounding engaging surface that confronts and that is spaced apart from said outer wall surface of said inner surrounding wall with a surrounding clearance, an annular connecting wall extending radially from said outer surrounding edge to attach to said outer wall surface of said inner surrounding wall that is proximate to said inner surrounding edge so as to form a surrounding abutment surface which confronts said surrounding clearance, and two electrical terminals disposed to be secured to said inner wall surface of said inner surrounding wall such that once said lower body of said plug-in base is brought to be fitted into said inner surrounding wall by virtue of sliding movement of said two lateral guiding walls relative to said inner wall surface, said first and second lead-in wires are brought into electrical contact with said two electrical terminals, respectively; and a light-transmissive housing defining a hollow chamber for receiving said light-emitting unit therein, and including an annular neck portion which extends along the axis to terminate at an annular edge that defines an opening to provide access into said hollow chamber, and which has inner and outer annular surfaces opposite to each other in radial directions, said annular neck portion being configured such that once said annular edge is brought to abut against said surrounding abutment surface of said annular connecting wall, said outer annular surface is engaged with said surrounding engaging surface of said outer surrounding wall, while said inner annular surface is spaced apart from said outer wall surface of said inner surrounding wall to thereby cut off creepage of intruding extraneous water into said inner surrounding wall.