1. Field of the Invention
The present invention relates to a lighting device and more particularly to a lighting device with an adjusting mechanism which is configured to adjust an illuminating range.
2. Description of Related Art
A conventional lighting device with a focusing mechanism comprises a lighting module and an adjusting module. The lighting module has a base and a light source disposed on the base. The adjusting module has a barrel, a convex lens and a position member. The convex lens is mounted to the barrel and retained by the position member. Specifically, the base has an external thread defined at an outer periphery thereof. The barrel has an internal thread defined at an inner periphery thereof and corresponding to the external thread of the base. With the internal thread of the barrel and the external thread of the base, the barrel could be assembled with the base and rotated relative to the base so as to adjust a distance between the convex lens and the light source.
Accordingly, a user could rotate the barrel to move the barrel back and forth relative to the base to adjust an illuminating range, while the convex lens is moving backward or forward to increase or spotlight the illuminating range. However, the internal thread of the barrel and the external thread of the base are relative high manufacturing cost.
The present invention has arisen to mitigate and/or obviate the disadvantages of the conventional lighting device.
The main objective of the present invention is to provide an improved lighting device with an adjusting mechanism.
To achieve the objective, a lighting device comprises a lighting module and a focusing module. The lighting module has a body and a barrel. The body has a base at one side to couple with the barrel and a light source on the base. The barrel has a pair of inclined grooves in an inner periphery thereof at opposite sides. The focusing module has a reflecting cup and a focusing member. The reflecting cup is attached to the base of the body around the light source and received in the barrel. The reflecting cup has a pair of slots horizontally disposed therein. The focusing member has a focusing lens corresponding to the light source and two bolts extending from opposite sides of the focusing lens, wherein each of the two bolts passes through the respective slot of the reflecting cup and is movably inserted in the respective inclined groove of the barrel with one end such that rotational movement of the barrel drives the focusing member to move horizontally along the slots of the reflecting cup.
Specifically, the focusing member is movable between a first position in which each of the two bolts is located in one end of the respective slot, and a second position in which each of the two bolts is located in an opposite end of the respective slot so as to adjust a distance between the focusing member and the light source. Furthermore, the reflecting cup has two wings respectively and horizontally extending from an outer side of the reflecting cup toward the barrel; and each of the two wings has a passage communicating with the respective slot of the reflecting cup for accommodating the respective bolt of the focusing member.
Moreover, the lighting device further comprises a cap mounted around the barrel and a handle extending downward from the body. The cap has at least one positioning groove in an inner periphery thereof. The barrel has an annular groove therein and at least one protrusion defined in the annular groove for coupling with the positioning groove of the cap. The handle has a plurality of holding grooves defined around the handle.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
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Furthermore, a handle 113 extends downward from the body 11, as shown in
Although embodiments of this invention have been fully described with reference to the accompanying drawings, it is to be understood that various modifications can be made by those skilled in the art without departing from the scope of the invention as hereinafter claimed.