Lamp and air-guiding ring thereof

Abstract

A lamp includes a lamp unit and an air-guiding ring. The lamp unit has a housing receiving a light-emitting element, as well as a fitted portion formed on an outer periphery of the housing. The air-guiding ring has an inner periphery forming a fitting hole and is fitted around the fitted portion of the lamp unit via the fitting hole. The air-guiding ring comprises a venting portion extending from an outer periphery to the inner periphery of the air-guiding ring.

Claims

1. A lamp comprising: a lamp unit having a housing, wherein a fitted portion is formed on an outer periphery of the housing; a light-emitting element received in the housing and located inside the fitted portion of the housing; and an air-guiding ring having an inner periphery forming a fitting hole, wherein the air-guiding ring comprises a venting portion extending from an outer periphery to the inner periphery of the air-guiding ring and a plurality of air channels extending from the outer periphery to the inner periphery and in fluid communication with the fitting hole, wherein the fitting hole of the air-guiding ring is fit around the fitted portion with the fitted portion blocking fluid communication between the plurality of air channels and the fitted portion to prevent air from flowing through the plurality of air channels into the fitted portion.

2. The lamp as claimed in claim 1, wherein the venting portion is in a form of a plurality of openings defining the plurality of air channels, wherein a plurality of protrusions protrudes from a face of the air-guiding ring extending between the inner periphery and the outer periphery, wherein the plurality of protrusions is spaced from each other to form a respective one of the plurality of openings between each two adjacent protrusions, and wherein the plurality of openings extends from the outer periphery to the inner periphery of the air-guiding ring.

3. The lamp as claimed in claim 2, wherein a plurality of positioning members is arranged on the air-guiding ring, wherein the plurality of positioning members is located on the plurality of protrusions, wherein each of the plurality of positioning members has an abutting face and a coupling face between the abutting face and the outer periphery of the air-guiding ring, wherein the abutting face abuts with the fitted portion of the housing, and wherein the coupling face is adapted to abut with an inner periphery of an installation hole of a ceiling.

4. The lamp as claimed in claim 3, wherein the abutting face is an arc-liking face.

5. The lamp as claimed in claim 2, wherein at least one of the plurality of protrusions includes an abutting protrusion, and wherein the abutting protrusion is closer to the inner periphery of the air-guiding ring than to the outer periphery of the air-guiding ring.

6. The lamp as claimed in claim 2, wherein at least one of the plurality of protrusions includes a radial extension extending outwards from the outer periphery of the air-guiding ring in a radial direction.

7. The lamp as claimed in claim 1, wherein the inner periphery and the outer periphery terminate in an upper peripheral edge and a lower peripheral edge, wherein the venting portion is in a form of a plurality of slits defining the plurality of air channels and extending from the outer periphery to the inner periphery of the air-guiding ring, and wherein each of the plurality of slits is located between and spaced from the upper peripheral edge and the lower peripheral edge.

8. The lamp as claimed in claim 1, wherein the lamp unit is coupled with a fan in fluid communication with the fitted portion and the plurality of air channels.

9. The lamp as claimed in claim 8, wherein the housing comprises a decorative protrusion adjoining the fitted portion and covering the air-guiding ring.

10. The lamp as claimed in claim 9, wherein an outer cover is arranged on the outer periphery of the air-guiding ring, wherein the outer cover is coupled with the decorative protrusion of the housing, wherein the outer cover extends away from the fan in an axial direction of the air-guiding ring, and wherein the outer cover is configured to guide air flow into the plurality of air channels.

11. The lamp as claimed in claim 8, wherein an outer cover is arranged on the outer periphery of the air-guiding ring, wherein the outer cover extends away from the fan in an axial direction of the air-guiding ring, and wherein the outer cover is configured to guide air flow into the plurality of air channels.

12. A lamp comprising: a housing having a fitted portion and an annular protrusion extending radially from the fitted portion, with the fitted portion being annular and extending away from a first side of the annular protrusion in a first axial direction, and with the annular protrusion including an annular outer edge radially spaced from the fitted portion; a light-emitting element received in the housing and located inside the fitted portion of the housing; and an air-guiding ring having an inner periphery forming a fitting hole and an outer periphery, with the air-guiding ring fit around the fitted portion of the lamp unit via the fitting hole and located in the first axial direction of and axially abutting with the first side of the annular protrusion in the first axial direction, and with the air-guiding ring including a venting portion extending from the outer periphery to the fitting hole of the air-guiding ring and a plurality of channels extending from the annular outer edge of the annular protrusion to the fitting hole of the air-guiding ring and in fluid communication with the fitting hole.

13. The lamp as claimed in claim 12, wherein the venting portion is in a form of a plurality of openings defining the plurality of air channels, wherein a plurality of protrusions protrudes from a face of the air-guiding ring in the first axial direction and between the inner periphery and the outer periphery, wherein the plurality of protrusions is spaced from each other to form a plurality of openings between each two adjacent protrusions, and wherein the plurality of openings extends from the outer periphery to the inner periphery of the air-guiding ring.

14. The lamp as claimed in claim 13, wherein a plurality of positioning members is arranged on the air-guiding ring, wherein the plurality of positioning members is located on the plurality of protrusions, wherein each of the plurality of positioning members has an abutting face and a coupling face between the abutting face and the outer periphery of the air-guiding ring, wherein the abutting face abuts with the fitted portion of the housing, and wherein the coupling face is adapted to abut with an inner periphery of an installation hole of a ceiling.

15. The lamp as claimed in claim 12, wherein the inner periphery and the outer periphery terminate in an upper peripheral edge and a lower peripheral edge, wherein the venting portion is in a form of a plurality of slits defining the plurality of air channels and extending from the outer periphery to the inner periphery of the air-guiding ring, and wherein each of the plurality of slits is located between and spaced from the upper peripheral edge and the lower peripheral edge.

16. The lamp as claimed in claim 12, further comprising a fan in fluid communication with the fitted portion and the plurality of air channels.

17. The lamp as claimed in claim 16, further comprising an outer cover arranged on the outer periphery of the air-guiding ring, wherein the outer cover is coupled with the annular protrusion of the housing, wherein the outer cover extends away from the fan in a second axial direction opposite to the first axial direction, and wherein the outer cover is configured to guide air flow into the plurality of air channels.

18. The lamp as claimed in claim 17, wherein each of the plurality of channels extends radially parallel to the annular protrusion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will become more fully understood from the detailed description given hereinafter and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:

(2) FIG. 1 is an exploded view of a conventional lamp.

(3) FIG. 2 shows another conventional lamp.

(4) FIG. 3 is a perspective view of a further conventional lamp.

(5) FIG. 4 is an exploded view of a lamp according to an embodiment of the invention.

(6) FIG. 5 shows an air-guiding ring of the lamp of the embodiment of the invention.

(7) FIG. 6 shows an air-guiding ring of the lamp according to another embodiment of the invention.

(8) FIG. 7 shows an air-guiding ring of the lamp according to a further embodiment of the invention.

(9) FIG. 8 is a cross sectional view of the lamp of the invention.

(10) FIG. 9 is an exploded view of another type of lamp equipped with the air-guiding ring according to the invention.

(11) FIG. 10 is a cross sectional view of the lamp in FIG. 9.

(12) FIG. 11 shows an air-guiding ring having a plurality of protrusions according to a still further embodiment of the invention, with each protrusion comprising an abutting protrusion and a radial extension.

(13) FIG. 12 is a cross-sectional view of a lamp equipped with the air-guiding ring of FIG. 11.

(14) In the various figures of the drawings, the same numerals designate the same or similar parts. Furthermore, when the terms first, second, third, fourth, inner, outer, top, bottom, front, rear and similar terms are used hereinafter, it should be understood that these terms have reference only to the structure shown in the drawings as it would appear to a person viewing the drawings, and are utilized only to facilitate describing the invention.

DETAILED DESCRIPTION OF THE INVENTION

(15) FIGS. 4 and 5 show a lamp including at least a lamp unit 1 and an air-guiding ring 2 according to an embodiment of the invention. Air-guiding ring 2 is fitted around lamp unit 1. In this embodiment, the lamp may include a fan 3 that is installed in a ceiling, a wall or other proper locations. In the embodiment shown in FIG. 4, the lamp may be installed in an installation hole 41 of a ceiling 4.

(16) Lamp unit 1 includes a housing 11 receiving a light-emitting element 12 (as shown in FIG. 8) capable of emitting light. A fitted portion 111 is formed on an outer periphery of housing 11 in order to couple with air-guiding ring 2. Housing 11 may further include a decorative protrusion 112 adjoining the fitted portion 111, such that decorative protrusion 112 is able to cover air-guiding ring 2 when air-guiding ring 2 is fitted around lamp unit 1. Accordingly, a desired decorative function is provided.

(17) Air-guiding ring 2 includes a first face 21 and a second face 22 opposite to first face 21. Air-guiding ring 2 includes an inner periphery forming a fitting hole 23, extending from first face 21 to second face 22. Air-guiding ring 2 can be fitted around the fitted portion 111 of lamp unit 1 via fitting hole 23. Air-guiding ring 2 may be preferably coupled with lamp unit 1 by loose fitting. Alternatively, air-guiding ring 2 may be coupled with lamp unit 1 by press fitting, adhesion, fastening, screwing or the like. The coupling mechanism between air-guiding ring 2 and lamp unit 1 is not limited to the above. Furthermore, air-guiding ring 2 further includes a venting portion 24 extending from an outer periphery to the inner periphery of air-guiding ring 2. Namely, venting portion 24 may extend from the outer periphery to fitting hole 23 of air-guiding ring 2.

(18) Venting portion 24 of air-guiding ring 2 may be of any structure that extends from the outer periphery to the inner periphery of air-guiding ring 2. For example, venting portion 24 may be in the form of an opening or a slit that allows air to flow therethrough. In the embodiment of FIG. 5, air-guiding ring 2 may include a plurality of protrusions 241. The protrusions 241 are spaced from each other to form an opening 242 between two adjacent protrusions 241. Opening 242 extends from the outer periphery to the inner periphery of air-guiding ring 2. Alternatively, as shown in FIG. 6, venting portion 24 is in the form of a plurality of slits 243 extending from the outer periphery to the inner periphery of air-guiding ring 2.

(19) Air-guiding ring 2 may be a plastic ring. Preferably, air-guiding ring 2 is a ring that can expand or shrink elastically (such as a rubber ring), so that air-guiding ring 2 can be easily fitted around the fitted portion 111 of housing 11 and enhance the coupling between air-guiding ring 2 and lamp unit 1.

(20) Referring to FIGS. 7 and 8, a plurality of positioning members 25 is preferably arranged on first face 21 of air-guiding ring 2. Each positioning member 25 includes an abutting face 251 and a coupling face 252 opposite to abutting face 251. Abutting face 251 may abut with the fitted portion 111 of housing 11. Coupling face 252 may abut with an inner periphery of ceiling 4 that forms installation hole 41. In addition, abutting face 251 is preferably in the form of an arc-like face in order not to scrape the surface of lamp unit 1 while lamp unit 1 is securely mounted in installation hole 41 of ceiling 4 via the plurality of positioning members 25.

(21) Lamp unit 1 may have different types of appearances or structures. FIGS. 9 and 10 show a lamp unit 1 with another type of appearance or structure. Moreover, an outer cover 26 is preferably arranged on an outer periphery of air-guiding ring 2. Outer cover 26 extends in an axial direction perpendicular to the radial direction and can be used to cover an outer edge of decorative protrusion 112 for aesthetics when air-guiding ring 2 is fitted around the fitted portion 111 of lamp unit 1.

(22) Referring to FIGS. 8 and 10, during the use of the lamp, the lamp in the embodiment may be installed in a ceiling, a wall or other proper locations. For example, when the lamp is installed in ceiling 4, air-guiding ring 2 is fitted around the fitted portion 111 of lamp unit 1, 1 and fixed to installation hole 41, of ceiling 4. Air-guiding ring 2 may be fixed to installation hole 41 of ceiling 4 by press fitting, adhesion, fastening or screwing. Since air-guiding ring 2 has venting portion 24, an air channel can be formed between venting portion 24 and ceiling 4 for the air to pass through. In this regard, when fan 3 is installed in ceiling 4 (fan 3 may be directly affixed to ceiling 4 or directly coupled with lamp unit 1, 1), fan 3 is able to guide the air into and out of the lamp via venting portion 24. As such, the desired ventilation effect is provided while the heat generated during the operation of the lamp is expelled, thereby prolonging the service life of the lamp.

(23) Referring to FIGS. 11 and 12, at least one of the plurality of protrusions 241 may include an abutting protrusion 241a adjacent to the inner periphery of air-guiding ring 2. In addition, at least one of the plurality of protrusions 241 may include a radial extension 241b extending outwards from the outer periphery of air-guiding ring 2 in a radial direction. In this arrangement, when lamp unit 1 is fixed at installation hole 41 of ceiling 4 via air-guiding ring 2, abutting protrusion 241a may couple with air-guiding ring 2, such that an edge of abutting protrusion 241a is adjacent to or aligned with the inner periphery of installation hole 41 of ceiling 4. Thus, an air channel may be formed between venting portion 24 and ceiling 4. Furthermore, radial extension 241b may increase the contact area between venting portion 24 and ceiling 4, and outer cover 26 may be coupled with decorative protrusion 112 of lamp unit 1 to effectively reinforce the coupling effect between air-guiding ring 2, ceiling 4 and lamp unit 1.

(24) Based on the above structure of the lamp, air-guiding ring 2 can be easily fitted around lamp unit 1, 1 before the lamp is installed in installation hole 41 of ceiling 4. Due to this property, the installation of the lamp does not require complex procedures, thus reducing the assembly complexity of the lamp.

(25) Furthermore, since the lamp in the embodiment is able to directly form the air channel between venting portion 24 and ceiling 4 when installed in installation hole 41 of ceiling 4, fan 3 can provide the desired ventilation effect simply using the venting portion 24 without having to drill extra vents on ceiling 4 in addition to installation hole 41. Advantageously, convenient use and cost reduction are attained.

(26) Furthermore, air-guiding ring 2 can also be directly fitted around any kind of lamp with suitable structure (such as a sleeve-like lamp) without changing the structures of modem lamps. In this regard, fan 3 may also be used to provide a ventilation effect for improved utility.

(27) Although the invention has been described in detail with reference to its presently preferable embodiments, it will be understood by one of ordinary skill in the art that various modifications can be made without departing from the spirit and the scope of the invention, as set forth in the appended claims.