JPS5913693Y2 - lighting equipment - Google Patents

Description

[Detailed explanation of the idea] This invention relates to lighting equipment.

BACKGROUND ART Conventionally, ceiling-embedded emergency lighting fixtures shown in FIGS. 1 and 2 have been manufactured.

In the figure, reference numeral 1 denotes a cylindrical device main body with an open bottom, and a charger 2 and a storage battery 3 are installed vertically as an emergency lighting unit on the bottom surface of a clay wall 1a.

A socket 4 is provided protruding from the bottom surface of the storage battery 3, and a lamp 5 such as a mini halogen lamp is attached thereto.

The fixture body 1 has a fixture mounting bracket 7 that engages with the top surface of the ceiling board 6.
Installed in.

Reference numeral 8 denotes a front cover, which is held pressed against the lower surface of the ceiling plate 6 by a cover mounting spring 9 provided on the inner surface of the appliance main body 1.

The front cover 8 is formed into an annular shape, and a bowl-shaped reflecting plate 10 is placed thereon facing downward.

The reflecting plate 10 has a lamp insertion hole 11 in the center into which the lamp 5 is loosely fitted.

The reflector 10 is formed into a combined paraboloid centered on the filament position of the lamp 5 in order to obtain a predetermined light distribution.

Specifically, the upper part 10a of the reflecting plate 10 is formed into a curved surface that reflects light directly below, and the lower part 10b is formed into a curved surface that reflects light in a 45° direction.

However, since the reflector plate 10 is simply installed on the front cover 8, there is a problem in that the reflection curved surface is vertically shifted due to variations and irregularities in the ceiling plate 6, and the desired light distribution cannot be obtained.

In addition, rattling of the cover mounting spring 9 that holds the front cover 8 and the fixture mounting bracket 7 that attaches the fixture body 1 causes fluctuations in the vertical position of the reflector 10, causing variations in light distribution, and furthermore, There is also a problem in that variations in light distribution occur due to variations within tolerances in the dimensions of each component such as 1 and the front cover 8.

In addition, the heat of the lamp 5 is transferred to the lamp insertion hole 11 of the reflector 10.
In other words, even if the design is such that when the reflector plate 10 is installed in the proper position, the maximum beam can be obtained in the 45° direction as shown in FIG. If the reflector 10 is mounted below its normal position due to various reasons, a light distribution curve as shown in FIG. 3B will result.

FIG. 3C shows the light distribution curve when the reflector 10 is installed above the normal position, and the third figure shows the light distribution curve when the reflector 10 is shifted left and right or tilted diagonally.

In addition, the heat of the lamp 5 is transferred to the lamp insertion hole 11 of the reflector 10.
There has been a problem in that the rising air flowing from the battery is transmitted to components such as the storage battery 3 and the charger 2 that are sensitive to high heat, which adversely affects the lifespan of these components.

In particular, the halogen light bulb used in this type of appliance has a higher lamp surface temperature when lit than other lamps (mini light bulbs, raw light bulbs, etc.), and if the heat of the lamp enters the main body tube 2, it is likely to cause harm. .

Note that if the reflector plate 10 is directly fixed to the appliance main body 1, the problem of variations in light distribution will be solved.

However, doing so poses a problem in standardizing parts.

In other words, various types of ceiling-embedded lighting fixtures are manufactured that use cylindrical fixture bodies, and there is a demand for these various lighting fixtures to use the same fixture body in order to standardize parts. There is.

If the reflector is fixed to the instrument body, the above-mentioned request cannot be met because a reflector attachment part is required on the instrument body.

Therefore, the purpose of this invention is to maintain a constant positional relationship between the center of the lamp filament and the reflector in lighting devices that use a cylindrical body and have a reflector installed on the front cover. To provide a lighting fixture that does not cause variations in light distribution and can prevent heat from a lamp from being transmitted to components that do not want high heat.

An embodiment of this invention is shown in FIGS. 4 and 5.

That is, in this lighting fixture, a flange-forming tube 14' (FIG. 5) that protrudes from the lamp insertion hole 13 is provided on the bowl-shaped reflector 12, and this flange-forming tube 14' is attached to the center of the reflector mounting spring 15. After passing through the matching hole 16 and the guide fitting 17, the guide fitting 17 is bent outward to form a flange 14 (FIG. 4), and the guide fitting 17 and the reflection plate mounting spring 15 are crimped and fixed by the flange 14.

The reflection plate mounting spring 15 is provided in an arch shape extending over the outside of the reflection plate 12, and has locking protrusions 18 bent outward at both ends thereof.

These locking protrusions 18 engage with slots -19a of a spring mounting bracket 19 attached to the front cover 8.

The reflector mounting spring 15 expands and has a biasing force when attached by the spring mounting bracket 19, and presses the flange 14 of the reflector 12 against the neck end surface 4a of the socket 4.

The guide fitting 17 has a peripheral wall portion 17a that fits loosely around the outer periphery of the neck portion of the socket 4, and an annular bottom plate portion 17b that is crimped to the flange 14 of the reflector plate 12.

With this configuration, the reflector 12 is always pressed against the neck end surface 4a of the socket 4 by the reflector attachment spring 15, and the relative position of the filament of the lamp 5 and the reflector 12 in the vertical direction is always constant.

That is, the filament position and the flange 1 of the reflector 12
The distance l between the outer surface of 4 and the outer surface of 4 is always constant.

In addition, the guide fitting 17 that fits onto the socket 4 is connected to the reflector 1.
Since the reflection plate 12 and the reflection plate 12 are crimped together with the reflection plate mounting spring 15, the reflection plate 12 is prevented from shifting or tilting in the left-right direction.

Therefore, the curved surface of the reflector 12, which is designed around the filament position, can always emit the correct reflected light as required. It is not affected by rattling or variations in dimensions of other parts.

Furthermore, since the flange 14 of the reflector 12 is in close contact with the neck end surface 4a of the socket 4, the heat of the lamp 5 and the high-temperature air inside the reflector 12 do not enter into the appliance body 1, and the storage battery 3 avoids high temperatures inside. It is also possible to prevent the temperature of the charger 2 from rising.

As described above, in the lighting device of this invention, the reflector is provided with a flange that is folded back outward from the lamp insertion hole, and the locking hole of the reflector mounting spring arranged straddling the outside of the reflector is connected to the reflector. Since the flange is engaged with the flange of the lamp and pressed against the end face of the neck of the socket, the positional relationship between the center of the lamp filament and the reflector plate is always maintained constant, eliminating variations in light distribution. This also has the effect of preventing the heat of the lamp from being transmitted to parts that do not like high heat.

[Brief explanation of drawings]

Figure 1 is a sectional view of a conventional lighting fixture, Figure 2 is an explanatory diagram of its operation, Figure 3 is a diagram of its light distribution, Figure 4 is a sectional view of an embodiment of this invention, and Figure 5 is its It is an exploded perspective view. 1... Appliance body, 2... Charger, 3.
...Storage battery, 4...Socket, 5...
...Lamp, 6...Ceiling board, 8...
Front cover, 12...Reflector, 13...
・Lamp insertion hole, 14...Flange, 14'・
... Flange forming cylinder, 15 ... Reflector mounting spring, 16 ... Engagement hole, 17 ... Guide metal fitting, 19 ... Spring Mounting hardware.

Claims (1)

[Scope of utility model registration request] A device body formed in a cylindrical shape with a downward opening and having a downward facing socket therein, the whole of which is embedded in a hole in the ceiling and attached to the ceiling, and a window in the center with an opening on the bottom surface of the device body a front cover that is attached to the appliance main body with a cover mounting spring so that the peripheral edge thereof is in contact with the lower peripheral edge of the hole in the ceiling; and a lamp of the socket that is disposed between the socket and the front cover and that is attached to the bottom of the socket. a downward bowl-shaped reflector having a lamp insertion hole through which the lamp is inserted and a flange folded back outward from the lamp insertion hole; and a reflection plate mounting spring having an engagement hole provided in the center that engages with the flange of the reflection plate and presses the flange against the neck end surface of the socket.