JP2567111Y2 - lighting equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a high pressure discharge lamp (HI
D lamp) as a light source.

[0002]

2. Description of the Related Art This type of lighting equipment used for mall lights (street lights), lighting equipment for service stations, and the like is formed as shown in FIG. A pair of socket bases 2 are attached at intervals to a top plate 1a of a square box-shaped appliance main body 1 that opens downward, and a flat plate-like reflector 3 parallel to the top plate 1a is attached to the socket base 2. . The sockets 4 are respectively attached to the socket bases 2 via the reflection plate 3,
A high-pressure discharge lamp 5 of a double-ended mold is disposed below the reflector 3, and both ends of the high-pressure discharge lamp 5 are supported by a socket 4. At the lower end of the frame portion 1b around the appliance body 1, there is provided a mounting edge 1c protruding inward, and the peripheral edge of the glass panel 6 arranged so as to close the lower surface opening of the appliance body 1 is placed on the mounting edge 1c. It is placed in.

[0003]

The high-pressure discharge lamp 5 of the two-die type has a compact shape in comparison with the wattage, and is suitable for downsizing and thinning of the lighting equipment. However, when the apparatus is made smaller or thinner, the gap between the high-pressure discharge lamp 5 and the reflector 3 becomes narrower, and the high-pressure discharge lamp 5 is gripped with the hand 8 as shown in FIG. There is a problem that the work when doing it is difficult.

In the specification of the high-pressure discharge lamp 5, it is necessary to maintain the lamp voltage of the high-pressure discharge lamp 5 to be used at a constant level. If this lamp voltage is lower than the reference, the output of the high-pressure discharge lamp 5 becomes full. However, in the above-described conventional example, the light reflected by the reflecting plate 3 is not exhibited when the flat reflecting plate 3 is provided on the high-pressure discharge lamp 5 only. There is a problem that the temperature of the high-pressure discharge lamp 5 does not rise due to the heat of the reflected light without being concentrated on the high-pressure discharge lamp 5, and the lamp voltage becomes lower than the reference, resulting in insufficient light.

The present invention has been made in view of the above problems, and it is an object of the present invention that a high pressure discharge lamp can be easily attached and detached, and sufficient light emission can be achieved by increasing the temperature of the high pressure discharge lamp. To provide lighting fixtures that can be used.

[0006]

In order to achieve the above object, the lighting fixture of the present invention has a flat plate-like reflector 3 attached below a top plate 1a of a fixture body 1, and a high-pressure discharge lamp below the reflector 3. In a lighting apparatus in which the high-pressure discharge lamp 5 is arranged and both ends of the high-pressure discharge lamp 5 are supported by the socket 4, a concave curved surface portion 7 for condensing the light on the reflector 3 directly above the high-pressure discharge lamp 5 is provided. I do.

[0007]

According to the above construction, since the reflecting plate 3 has the concave curved surface portion 7 just above the high pressure discharge lamp 5, the high pressure discharge lamp 5 is attached to the socket 4 by putting a hand in the concave curved surface portion 7, It can be removed from the socket 4 and the high pressure discharge lamp 5 can be easily attached and detached. When the high-pressure discharge lamp 5 is turned on, the light can be condensed by the concave curved surface portion 7 and intensively reflected on the high-pressure discharge lamp 5, and the temperature of the high-pressure discharge lamp 5 can be raised to sufficiently emit light at a reference lamp voltage.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, the instrument body 1 is formed in a rectangular box shape with an opening at the bottom, and a top plate 1a is provided on the upper surface.
It has a surrounding frame 1b. At the lower end of the frame portion 1b, a mounting edge 1c protruding inward is provided. The frame portion 1b has an opening 1d, and a transparent plate or the like can be attached to the opening 1d. A pair of socket bases 2 is attached to the lower surface of the top plate 1a with a space therebetween, and a flat plate-like reflecting plate 3 is provided below this so as to be substantially parallel to the top plate 1a.
The reflector 3 is mounted on the socket base 2 with the reflector mounting screws 9. A socket 4 is disposed below the socket base 2 via a reflection plate 3, and the socket 4 is attached to the socket base 2. The high-pressure discharge lamp 5 is a sodium lamp, a metal halogen lamp, or the like, and is a double-necked die. The high-pressure discharge lamp 5 is installed between the sockets 4, and both ends of the high-pressure discharge lamp 5 are connected to the socket 4. Immediately above the high-pressure discharge lamp 5, the reflecting plate 3 is provided with a concave curved surface portion 7 having a shape condensing on the high-pressure discharge lamp 5. The concave curved surface portion 7 has a hemispherical surface as shown in FIG. 3A and a semi-cylindrical surface as shown in FIG. A glass panel 6 is arranged at an opening on the lower surface of the instrument body 1, and the peripheral edge of the glass panel 6 is mounted on the mounting edge 1 c.

When the high-pressure discharge lamp 5 is turned on, the lamp is illuminated by the direct light from the high-pressure discharge lamp 5 and illuminated by the reflected light from the reflector 3. At this time, the light condensed and reflected by the concave curved surface portion 7 concentrates on the high-pressure discharge lamp 5,
The temperature of the high-pressure discharge lamp 5 is raised, and light is sufficiently emitted at a reference lamp voltage. When the high-pressure discharge lamp 5 is to be attached or detached by grasping it with the hand 8, the hand 8 can be inserted into the concave curved surface portion 7 as shown in FIG. 4, so that the high-pressure discharge lamp 5 can be easily attached or detached. .

[0010]

According to the present invention, as described above, the concave plate portion is provided on the reflector just above the high pressure discharge lamp.
It can be removed from the socket, the high-pressure discharge lamp can be easily attached and detached, and the high-pressure discharge lamp can be easily replaced.In addition, since the concave curved surface can be accessed, the reflector and high-pressure discharge lamp should be used as much as possible. The lighting fixture can be made thinner as a whole, and when the high-pressure discharge lamp is turned on, it can be condensed on the concave curved surface and can be reflected intensively on the high-pressure discharge lamp, reducing the temperature of the high-pressure discharge lamp. It is possible to emit light sufficiently at a reference lamp voltage by raising the reference voltage, and to exhibit the original light output without changing the light distribution.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a partially omitted perspective view of the same.

FIGS. 3A and 3B are perspective views showing the shape of a concave curved surface portion.

FIG. 4 is an explanatory diagram for explaining attachment and detachment of the high-pressure discharge lamp according to the first embodiment.

FIG. 5 is a sectional view of a conventional example.

FIG. 6 is a perspective view illustrating attachment and detachment of the high pressure discharge lamp according to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 1a Top plate 3 Reflector 4 Socket 5 High pressure discharge lamp 7 Concave curved surface part

Claims (1)

(57) [Scope of request for utility model registration] 1. A lighting apparatus in which a flat reflector is mounted below a top plate of a fixture body, a high-pressure discharge lamp is arranged below the reflector, and both ends of the high-pressure discharge lamp are supported by sockets. A lighting fixture comprising a concave curved surface portion for condensing light on a reflector just above a lamp.