Patent Application
20170211799
The disclosure relates to a lamp assembly, more particularly to a lamp assembly that can illuminate toward opposite directions, and a lamp device having the lamp assembly.
A conventional lamp device generally includes a base plate, and a plurality of light-emitting diodes (hereinafter abbreviated as LEDs) mounted on the base plate. During operation of the conventional lamp device, the LEDs may generate heat which, without being efficiently dissipated, may cause damage to the LEDs.
Therefore, an object of the disclosure is to provide a two-sided lighting lamp assembly that has a relatively high heat dissipating efficiency.
According to the disclosure, a lamp assembly includes a base plate and a plurality of light emitting units. The base plate has a first surface and a second surface opposite to the first surface. The base plate is formed with a plurality of first heat-dissipating holes extending through the first and second surfaces, and a plurality of second heat-dissipating holes extending through the first and second surfaces and possessing a diameter smaller than that of the first heat-dissipating holes. The light emitting units are mounted on the first and second surfaces.
Another object of the disclosure is to provide a lamp device having the abovementioned lamp assembly.
Accordingly, a lamp device includes a lamp seat, the abovementioned lamp assembly, and a transparent lamp cover that is connected to the lamp seat and that encloses the lamp assembly therein.
Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiments with reference to the accompanying drawings, of which:
Before the present invention is described in greater detail, it should be noted that like elements are denoted by the same reference numerals throughout the disclosure.
Referring to
As shown in
The base plate 21 has a center (C), an outer edge 213 radially distal from the center (C), a first surface 211, and a second surf ace 212 opposite to the first surface 211. Moreover, the base plate 21 is formed with a plurality of first heat-dissipating holes 23 extending through the first and second surfaces 211, 212, and a plurality of second heat-dissipating holes 24 extending through the first and second surfaces 211, 212 and possessing a diameter smaller than that of the first heat-dissipating holes 23. The first heat-dissipating holes 23 of the base plate 21 are angularly spaced apart from each other and surround the center (C). The second heat-dissipating holes 24 surround the light emitting units 22.
In this embodiment, the light emitting units 22 are LEDs, and are mounted on the first and second surfaces 211, 212, so that the lamp assembly 2 is able to emit light from both of the first and second surfaces 211, 212. Some of the light emitting units 22 are angularly spaced apart from each other, are mounted on the first surface 211 of the base plate 21, are respectively and radially spaced apart from the first heat-dissipating holes 23, and are disposed between the center (C) of the base plate 21 and the first heat-dissipating holes 23. The remainder of the light emit ting units 22 are angularly spaced apart from each other, are mounted on the second surface 212 of the base plate 21, are respectively and radially spaced apart from the first heat-dissipating holes 23, and are disposed between the first heat-dissipating holes 23 and the outer edge 213 of the base plate 21 (i.e., the light emitting units 22 mounted on the first surface 211 are located closer to the center (C) than the remainder of the light emitting units 22 mounted on the second surface 212).
The driving unit 25 is mounted on the second surface 212 of the base plate 21, and is connected electrically to the light emitting units 22 for driving operation of the light emitting units 22.
By virtue of the arrangement of the first heat-dissipating holes 23 and the arrangement of the second heat-dissipating holes 24 that are evenly distributed on the base plate 21, air flow through the lamp assembly 2 is facilitated, thereby enhancing neat dissipating efficiency of the lamp assembly 2.
As shown in
Specifically, the mounting seat 33 of the lamp shade 3 has a round wall 331 and a fastening wall 332. The round wall 331 has a top surface 331a that supports the second surface 212 of the base plate 21 thereon. The fastening wall 332 is flexible, and has a surrounding portion 332a that is connected to the top surface 331a of the round wall 331 and that surrounds the base plate 21, and a lock portion 332b that is connected to a top end of the surrounding portion 332a, that extends inwardly, that abuts against the first surface 211 of the base plate 21, and that has an inclined inner surrounding surface 332c for facilitating mounting of the base plate 21. Therefore, the base plate 21 can be snap-fitted to the mounting seat 33 with the guidance of the inclined inner surrounding surface 332c.
As shown in
As shown in
In summary view of the foregoing embodiments, due to the fact that the light-emitting units 22 of the lamp assembly 2 are mounted on the first and second surfaces 211, 212 of the base plate 21, the lamp device according to the disclosure is able to provide a two-sided lighting function for a broader area of illumination. Furthermore, by virtue of the first and second heat dissipating holes 23, 24 that extend through the base plate 21 and that are aptly-arranged relative to the light-emitting units 22, the lamp device according to the disclosure can provide better heat dissipating efficiency.
While the present invention has been described in connection with what is considered the exemplary embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
