Shield for a small lamp

• US 5,165,788 A
• Filed: 08/16/1991
• Issued: 11/24/1992
• Est. Priority Date: 08/16/1991
• Status: Expired due to Term

• Current Assignee: Lucifer Lighting Company
• Original Assignee: Lucifer Lighting Company
• Inventors: McLaughlin, Donald D.
• Primary Examiner(s): Husar, Stephen F.
• Application Number:
  US07/745,867
• Time in Patent Office: 466 Days
• Field of Search: 362/310, 362/362, 362/373, 362/360, 362/374, 362/375, 362/455, 362/376
• US Class Current: 362/375
• CPC Class Codes: F21V 17/14 Bayonet-type fastening
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 29/60 characterised by the use of a forced flow of gas, e.g. air
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels

Abstract

A cover (70) for a small lamp, the cover having a flat, ring-shaped member (16) with locking legs (28) projecting vertically downward from the underside (26) of the ring (18) for locking into notches in the base (62) of the lamp. The ring-shaped member (18) has locking upright members (24) which project vertically from the top surface (22) thereof, which hold a glass shield (20) in place and which receive on the upper portions thereof a locking ring member (16).

Claims

1. A shield for a lamp, the lamp having a housing comprised of a circular base, side walls, and perimeter member integral with the side walls, the housing having a reflector and bulb on the interior thereof, the housing further having receipt means therein for adaption to and receipt of the shield, the shield comprising:

cover means, said cover means being ring shaped with a top surface and a bottom surface thereon, said cover means defining an opening, said cover means having standoffs on the top surface thereof, said cover means for covering the perimeter member of the housing;

uprights, said uprights extending vertically upward from the top surface of said cover means, said uprights having a means for locking thereon;

legs, said legs being flexible and extending vertically downward from the bottom surface of said cover means, said legs having engagement means on the removed end thereof, for removable engagement with receipt means of the housing;

transparent member dimensioned resting on the standoffs of said cover means; and

locking ring for lockingly engaging the locking means of said uprights to thereby hold said transparent means against the standoffs of said cover means, and to hold said lock ring to said uprights.

2. The device of claim 1 wherein the standoffs of said cover means are integral with said uprights.

3. The device of claim 1 wherein the uprights have an inner and an outer surface thereon, the outer surface defining a channel therein and wherein the lock ring has an inner and an outer surface, the inner surface thereof defining boss means, dimensioned for receipt snugly within the channel of said uprights, the channel thereby providing the means for locking to the boss means of said lock ring for holding said lock ring to said uprights.

4. The device of claim 1 wherein the engagement means of said legs are comprised of a wedge dimensioned to slidably engage the receipt means of the housing of the lamp.

5. The device of claim 3 wherein the channel of the outer surface of said uprights is open at a first end and closed at a second end and wherein the boss means of the inner surface of said lock ring is dimensioned to slide into the open end and seat snugly within the channel upon placement of said lock ring over said cover and said transparent member, upon rotation of said lock ring.

6. The device of claim 5 wherein the standoffs of said cover and the locking ring are dimensioned to allow for a gap between the top surface of said cover and said transparent member, thereby allowing the circulation of air over the bulb of the lamp.

7. The device of claim 1 wherein the standoffs of said cover means are integral with said uprights and wherein the standoffs of said cover and the locking ring are dimensioned to allow for a gap between the top surface of said cover and the bottom surface of said transparent member, thereby allowing the circulation of air over the bulb of the lamp.

8. The device of claim 7 wherein the uprights have an inner and an outer surface thereon, the outer surface defining a channel therein and wherein the lock ring has an inner and an outer surface, the inner surface thereof defining boss means, the boss means dimensioned for receipt snugly within the channel of said uprights, the channel thereby providing the means for locking to the boss means of said lock ring thereby holding said lock ring to said uprights.

9. The device of claim 8 wherein the engagement means of said legs are comprised of a wedge dimensioned to slidably engage the receipt means of the housing of the lamp.

10. A shield for a lamp, the lamp having a housing comprised of a circular base, side walls, and perimeter member integral with the side walls, the housing having a reflector and bulb on the interior thereof, the housing further having receipt means therein for adaption to and receipt of the shield, the shield comprising:

cover means, said cover means being ring shaped at the top surface and a bottom surface thereon, the cover means defining an opening, said cover means having stand-offs on the top surface thereof, said cover means for covering the perimeter member of the housing;

uprights, said uprights extending vertically upright from the top surface of said cover means, said uprights having a means for locking thereon, said uprights having standoffs integral at the base thereof;

legs, said legs being flexible and extending vertically downward from the bottom surface of said cover means, said legs having an engagement means on the removed end thereof, for a removable engagement with receipt means of the housing;

transparent member for substantially covering the opening of said cover means, the transparent member resting on the standoffs of said cover means; and

lock ring for lockingly engaging the lock means of said uprights to thereby hold said transparent means against the standoffs of said cover means, to hold said lock ring to said uprights;

wherein the standoffs of said cover and the locking ring are dimensioned to allow for a gap between the top surface of said cover and said transparent member, thereby allowing the circulation of air over the bulb of the lamp.