JP2003016820A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely prevent an incandescent lamp from attaching. SOLUTION: This luminaire is provided with a socket 4, capable of attaching both a compact fluorescent lamp 1 or 2, and the incandescent lamp 3. A cylindrical reflector shade 5, of which the inside diameter is completely fit toward the socket 4, is provided in the front face of the socket 4, an inwardly-protruded protrusion 6 is integrally formed in the vicinity of the socket 4 in the reflector shade 5, the compact fluorescent lamp 1 or 2 is attached to the socket 4, without being encumbered by the protrusion 6, but the incandescent lamp 3 is incapable of being attached to the socket 4 because of encumbrance by the protrusion 6.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus provided with a lamp socket. 2. Description of the Related Art A lighting apparatus having a socket to which both a compact fluorescent lamp and an incandescent lamp can be mounted is known. When an incandescent lamp which generates a large amount of heat is mounted in the socket, a problem occurs in the heat resistant temperature. Because it was easy, it was made impossible to attach. As means for this, a bar-shaped incandescent lamp having a large bulb diameter is separately provided near the socket. However, separately providing such a bar-shaped member tends to increase the number of assembly steps and increase the cost. Therefore, an object of the present invention is to provide a lighting fixture that makes it impossible to mount an incandescent lamp easily and reliably. [0004] It is as set forth in the claims. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described, which are merely exemplary embodiments adopted based on the present invention, and the present invention is not limited to the specific embodiments. The technical interpretation of the present invention should be determined based on the matters stated in the claims and the matters substantially equivalent to the matters described in the claims. The illustrated embodiment is a lighting apparatus provided with a socket 4 to which both a compact fluorescent lamp 1 or 2 and an incandescent lamp 3 can be mounted. In addition to having a narrowed cylindrical reflector 5, a reflector 6 having an inward projection 6 formed integrally with the reflector 4 near the socket 4 so that the compact fluorescent lamp 1 or 2 does not interfere with the reflector 6. The incandescent lamp 3 can be attached to the socket 4 without being
Reference numeral denotes a lighting fixture that cannot be mounted on the socket 4 because it is obstructed by the protrusion 6. [0007] More specifically, this lighting fixture is equipped with a ceiling 7.
The socket 4 is fixed to the lower surface of the main body 8 attached to the main body 8, and the resin shade 5 is attached to the main body 8 by appropriate means. In FIG. 1, two types of compact fluorescent lamps are shown at the same time.
Are of high W and can be mounted in the socket 4 without being hindered by the protrusions 6. On the other hand, as shown in FIG.
Since the incandescent lamp 3 has a large bulb outer diameter, it cannot be mounted on the socket 4 because it is hindered by the projection 6. According to the present embodiment, since there is no possibility that the incandescent lamp 3 is mistakenly mounted in the socket 4, it is safe in terms of temperature rise, and it is only necessary to form the projection 6 integrally with the reflector 5. And can be realized at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional view when a compact fluorescent lamp is mounted. FIG. 2 is a sectional view of a main part when an incandescent lamp is mounted. 3 Incandescent lamp 4 Socket 5 Reflector shade 6 Projection

Claims (1)

Claims 1. A lighting device comprising a socket to which both a compact fluorescent lamp and an incandescent lamp can be mounted, wherein a tube whose inner diameter decreases toward the socket at the front of the socket. In addition to the reflector, the reflector has an inward projection integrally formed near the socket, and the compact fluorescent lamp can be mounted on the socket without being obstructed by the projection. A lighting device in which the lamp is disturbed by the protrusion and cannot be mounted on the socket.