JP3755264B2 - lighting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting apparatus such as a spotlight that irradiates a specific area of an irradiated surface.
[0002]
[Prior art]
A conventional technique will be described with reference to FIG. FIG. 5 is a partially cutaway side view of the lighting fixture.
[0003]
The luminaire shown in FIG. 5 includes a lamp body 1, a mini-halogen bulb 2 corresponding to a lamp, a reflecting mirror 3, a protection panel 4, a translucent panel 5 for additional functions, and a front frame 6.
[0004]
The lamp body 1 is generally cylindrical and has a light projecting opening 1a at one end, and the other end 1b is pivotally supported by an arm 7 so that the irradiation direction can be freely changed.
[0005]
The mini-halogen bulb 2 is disposed so as to be located on the center line L1 of the lamp body 1 inside the lamp body 1.
[0006]
The reflecting mirror 3 covers the side and rear of the mini-halogen bulb 2 and irradiates light forward from the front projection opening 3a.
[0007]
The protection panel 4 is provided in the lamp body 1 in front of the mini-halogen bulb 2 and the reflecting mirror 3 so as to close the light projecting opening 1a of the lamp body 1. The protective panel 4 prevents the broken pieces from being scattered outside the lamp body 1 even when the mini-halogen bulb 2 is damaged.
[0008]
The additional function translucent panel 5 is provided in the lamp body 1 in front of the mini-halogen bulb 2 and the reflecting mirror 3 and further in front of the protective panel 4 so as to cover the protective panel 4. The additional function translucent panel 5 is specifically a color filter, a color temperature conversion filter, a heat ray cut filter, or the like.
[0009]
A desired light distribution can be obtained by attaching a desired additional function translucent panel 5 in advance before projecting light.
[0010]
[Problems to be solved by the invention]
By the way, the protective panel 4 is pressed down by the side surface of the convex portion 6a protruding from the inner side surface of the front frame 6 fitted to the light-transmitting opening 1a of the instrument body 1 on the side where the mini-halogen bulb 2 is disposed (rear side). In order not to fall off. On the other hand, the translucent panel 5 for additional functions is pressed against the translucent direction side surface opposite to the side surface of the convex portion 6a by the locking spring 8 so that it does not fall off.
[0011]
Therefore, the convex part 6a is interposed between the mutually opposing surfaces of the protective panel 4 and the additional function translucent panel 5, and an air layer A having the thickness of the convex part 6a exists between both surfaces.
[0012]
Since this air layer A has a function as a heat insulating layer, in the conventional lighting fixture, heat generated in the lamp body is prevented from being radiated from the protective panel 4 side, and the temperature in the lamp body rises. There was a problem of doing.
[0013]
The present invention has been made to improve the above-described problems, and an object of the present invention is to provide a lighting fixture that can suppress the temperature rise of the lamp body.
[0014]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention is characterized in that in the invention according to claim 1, a lamp is provided in the lamp body, the light-transmitting opening on the front surface of the lamp body is closed and the light-transmitting opening is closed. A luminaire comprising a substantially annular front frame fitted with the light-transmitting opening, which is provided with a protective panel that transmits light, and a restricting convex portion that restricts movement of the protective panel to the front side. In this case, an additional function translucent panel thicker than the thickness of the restricting convex portion in the protruding direction inside the restricting convex portion is disposed in contact with the protective panel, and a groove portion is provided in the vicinity of the front surface of the restricting convex portion. In addition, a locking spring that presses and locks the additional function translucent panel from the front side is provided in engagement with the groove.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a partially broken side view of a lighting fixture. FIG. 2 is a cross-sectional view of a main part of the lighting fixture. FIG. 3 is a front view of the locking spring. FIG. 4 is a front view of the lighting fixture.
[0016]
The luminaire shown in FIG. 1 includes a lamp body 9, a mini-halogen bulb 10 corresponding to a lamp, a reflecting mirror 11, a protection panel 12, a translucent panel 13 for additional functions, a front frame 14, and a locking spring 15. It is.
[0017]
The lamp body 9 is generally cylindrical and has a light-transmitting opening 9a at one end, and the other end 9b is pivotally supported by the arm 16 so that the irradiation direction can be freely changed.
[0018]
The mini-halogen bulb 10 is disposed so as to be positioned on the center line L2 of the lamp body 9 inside the lamp body 9.
[0019]
The reflecting mirror 11 covers the side and rear of the mini-halogen bulb 10 and irradiates light from the front projection opening 10a to the projection direction side (hereinafter referred to as the front side).
[0020]
The protection panel 12 is provided in the lamp body 9 so as to close the light projecting opening 1a of the lamp body 9 on the front side of the mini-halogen bulb 10 and the reflecting mirror 11. As shown in FIG. 2, the peripheral portion of the surface of the protective panel 12 on the side of the mini-halogen bulb 10 (hereinafter referred to as the rear side) is a regulating piece 9 c that is erected inward from the inner surface of the lamp body 9. The protective panel 12 is prevented from moving to the rear side. This protective panel 4 prevents the broken pieces from being scattered outside the lamp body 1 even when the mini-halogen bulb 10 is broken.
[0021]
The front frame 14 is a generally annular frame that fits into the light-transmitting opening 9 of the lamp body 9, and has a regulating convex portion 14 a on the inner surface facing inward. And the control convex part 14a is the surface of the back side of the control convex part 14a, presses the protection panel 12, and controls the movement to the front side of the protection panel 12. FIG. Further, a groove portion 14b into which the locking spring 15 is fitted is formed on the front side of the restricting convex portion 14a of the front frame 14.
[0022]
The additional function translucent panel 13 is provided in front of the mini-halogen bulb 10 and the reflecting mirror 11 and on the inner side of the restricting convex portion 14a as shown in FIG. is there. The additional function translucent panel 13 is specifically a color filter, a color temperature conversion filter, a heat ray cut filter, or the like.
[0023]
As shown in FIG. 3, the locking spring 15 is a substantially circular piano wire having a diameter of 1.8 [mm], and both ends thereof are bent to form knob portions 15a and 15a. Angle-shaped protrusions 15b, 15b, 15b are formed by being bent inward at the portion. The locking spring 15 is bent by bringing the knob portions 15 a and 15 a closer to each other, and engages with the groove portion 14 b of the front frame 14. When the locking spring 15 is engaged with the groove 14b, as shown in FIGS. 1 and 4, the apex portions of the protrusions 15b, 15b, and 15b of the locking spring 15 are the translucent panel 13 for additional functions. Is pressed from the front side with a spring force. Therefore, the additional function translucent panel 13 does not move to the front side but closely contacts the front side surface of the protection panel 12.
[0024]
In the lighting fixture configured as described above, the locking spring 15 presses the additional function translucent panel 13 so that the protective panel 12 and the additional function translucent panel 13 are in close contact with each other. Therefore, it is possible to radiate heat from the additional function translucent panel 13.
[0025]
【The invention's effect】
Since the lighting fixture of the present invention is configured as described above, in the invention according to claim 1, the additional function translucent film is thicker inside the protruding direction of the regulating projection than the thickness in the front-rear direction of the regulating projection. A panel is disposed in contact with the protective panel, a groove is provided in the vicinity of the front surface of the restricting convex portion, and a locking spring that presses and locks the translucent panel for additional functions from the front side is engaged with the groove. Since the locking spring presses the additional function transparent panel and the additional function transparent panel and the protective panel are in close contact with each other, air is interposed between the additional function transparent panel and the protective panel. There is no layer, and the heat generated in the lamp body is also dissipated from the translucent panel for additional functions, and the temperature rise of the lamp body can be suppressed.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a lighting fixture.
FIG. 2 is a cross-sectional view of a main part of the lighting fixture.
FIG. 3 is a front view of a locking spring.
FIG. 4 is a front view of a lighting fixture.
FIG. 5 is a partially cutaway side view of the lighting fixture.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 9 Lamp main body 9a Translucent opening 10 Lamp 12 Protection panel 13 Translucent panel 14 for additional functions Front frame 14a Restriction convex part 14b Groove part 15 Locking spring

Claims (1)

A regulation in which a lamp is provided in the lamp body, a protective panel that closes the transparent opening and transmits light is disposed in the transparent opening on the front surface of the lamp body, and restricts the movement of the protective panel to the front side. In the lighting fixture formed by fitting a substantially annular front frame having a convex portion projecting from the inner peripheral surface to the light transmitting opening,
An additional function translucent panel thicker than the thickness of the restricting convex portion in the protruding direction inside the restricting convex portion is disposed so as to be in contact with the protective panel, and a groove is provided on the front side of the restricting convex portion. A lighting fixture, wherein a locking spring that presses and locks the additional function translucent panel from the front side is engaged with the groove.

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