JP4702260B2 - Reflector for lighting fixture and lighting fixture using the same - Google Patents

Description

  The present invention relates to a reflector for a lighting fixture and a lighting fixture using the same.

2. Description of the Related Art Conventionally, lighting fixtures using a straight tube type discharge lamp as a light source have been provided. For example, as disclosed in Patent Document 1, there is a two-lamp lighting fixture using two discharge lamps as a light source. As shown in FIG. 4 (a), this type of lighting fixture lights two pairs of sockets (not shown) to which a straight tube type discharge lamp (not shown) is detachably attached and the discharge lamp. A substantially flat plate-like long fixture body 10 that has a ballast (not shown) and is attached to the installation surface of the ceiling, and a long reflection that covers the fixture body 10 and reflects light from the discharge lamp And a plate 11. The reflection plate 11 is formed so that a substantially central portion in the short direction of the substantially rectangular plate portion 11b made of a metal material is bent along the longitudinal direction so that a cross section in the longitudinal direction is substantially V-shaped. The substantially V-shaped top portion is attached to the instrument body 10 so as to protrude vertically downward from the opening surface of the instrument body 10. Here, since both ends in the longitudinal direction of the reflecting plate 11 protrude downward from the opening surface of the instrument body 10, the appearance is impaired. A tapered portion 11a made of a resin material that is inclined vertically upward toward the outside is attached. Thus, the taper portion 11a improves the lengthwise fit of the reflector 11 and improves the appearance of the lighting fixture (see FIG. 4B).
Japanese Utility Model Publication No. 6-2509

  However, in the above conventional example, as shown in FIG. 4C, the taper portion 11a and the plate portion 11b are formed separately from the resin material and the metal material, respectively, so that the number of parts increases. Since a machining process is required for each part, there is a problem that the manufacturing cost is generally increased. Further, since the taper portion 11a is formed of a resin material, the taper portion 11a is discolored due to deterioration of the resin material, and a color difference is generated between the taper portion 11a and the plate portion 11b, thereby impairing the sense of unity. There was a problem.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a reflector for a lighting fixture that reduces the manufacturing cost and does not impair the sense of unity, and a lighting fixture using the same.

In order to achieve the above object, the first aspect of the present invention has a substantially V-shaped cross-section perpendicular to the longitudinal direction by bending the substantial center of the long plate-shaped member in the lateral direction along the longitudinal direction. The top of the substantially V-shaped cross section is arranged between the pair of straight tube type discharge lamps so as to project a predetermined dimension vertically below the opening surface of the main body of the appliance housing the discharge lamp. A reflector for a lighting fixture that reflects light from a discharge lamp, and at both ends in the longitudinal direction, tapered portions that are inclined vertically upward from the top toward the outside in the longitudinal direction are integrally formed with the plate-like member, respectively. The tapered portion is formed by abutting two sides of a notch formed by notching a substantially triangular shape toward one side with an arbitrary point inside one side along the short direction of the plate-shaped member as a vertex. The two sides of the notch are each smooth curves Characterized in that that.

The invention of claim 2 is characterized in that, in the invention of claim 1 , the tapered portion is formed such that the top of the notch does not coincide with the approximate center in the short direction of the plate-like member.

Invention of Claim 3 consists of the reflector for lighting fixtures of Claim 1 or 2 , the socket to which a discharge lamp is mounted | worn detachably, and the fixture main body to which the reflector for lighting fixtures and a socket are attached. It is characterized by.

According to the invention of claim 1 , since the taper portion is provided integrally with the plate-like member constituting the reflector, the plate-like member and the taper portion can be formed of the same material, so that the number of parts can be reduced. Therefore, the manufacturing cost can be reduced. Further, since the plate-like member and the tapered portion are integrally formed, it is possible to prevent a color difference from occurring due to the deterioration of the resin material as in the conventional example, and thus the sense of unity of the reflecting plate is impaired. Can be prevented . In addition, since the two sides of the notch are made into a smooth curve, it is possible to prevent a gap from being generated when the two sides of the notch are abutted .

According to the second aspect of the present invention, the notch is formed so that the vertex of the notch does not coincide with the approximate center in the short direction of the plate-like member. Therefore, when the two sides of the notch are abutted, The appearance can be finished beautifully compared with the case where the apex coincides with the approximate center in the short direction of the plate-like member.

According to invention of Claim 3, the lighting fixture which has the effect of Claim 1 or 2 can be provided.

  Hereinafter, embodiments of a reflector for a lighting apparatus according to the present invention will be described with reference to the drawings. In the present embodiment, as shown in FIG. 1A, a substantially center in the short direction of the long plate-like member 1 is bent along the longitudinal direction, and a cross section perpendicular to the longitudinal direction is substantially V-shaped. At both end portions (only one end portion in the figure) in the longitudinal direction, tapered portions 2 that incline vertically upward from the top of the substantially V-shaped cross section toward the outside in the longitudinal direction are formed on the plate-like member 1. And is provided integrally.

  As shown in FIG. 1C, the plate-like member 1 is a single substantially rectangular flat plate made of a metal material, and is formed to have a width that allows insertion of a louver 4 for limiting glare. Linear slits 5 are provided at equal intervals in the longitudinal direction. As shown in FIG. 1 (b), the louver 4 is formed in a substantially rectangular shape having an arcuate lower edge, and a discharge lamp (see FIG. (Not shown) is provided with a substantially semicircular recess 4a. The louver 4 is inserted and fixed to the plate-like member 1 by a fixing means (not shown) by inserting the substantially upper center of the louver 4 into the slit 5.

  At both ends in the longitudinal direction of the plate-like member 1, as shown in FIG. 1C, an arbitrary point on the inner side by a predetermined length from one side along the short-side direction of the plate-like member 1 is defined as the apex portion 3 a. Each of the cutouts 3 is cut into a substantially triangular shape toward the one side (in the drawing, only one end portion). Note that a bending margin having a predetermined width is provided at the apex portion 3 a of the notch 3 in consideration of the thickness of the plate member 1 when the plate member 1 is bent. Thus, the plate-like member 1 is bent so that the cross-section perpendicular to the longitudinal direction is substantially V-shaped, with the middle line A passing through the approximate center in the short direction of the plate-like member 1 and extending along the longitudinal direction. And the taper part 2 is formed by abutting 2 sides 3b and 3c of the notch 3. FIG.

  As described above, since the substantially triangular cutouts 3 are provided at both ends in the longitudinal direction of the plate-like member 1, and the tapered portions 2 are formed by abutting the two sides 3b and 3c of each cutout 3, Since the plate-like member 1 and the tapered portion 2 can be formed of the same material, the number of parts can be reduced, and thus the manufacturing cost can be reduced. Further, since the plate-like member 1 and the tapered portion 2 are integrally formed, it is possible to prevent a color difference from occurring due to the deterioration of the resin material as in the conventional example, and thus the sense of unity of the reflecting plate is impaired. Can be prevented.

  As shown in FIG. 2A, the apex 3a of the notch 3 does not coincide with the middle line A, that is, the notch is shifted so that the upper and lower shapes in FIG. 3 may be formed. In general, when the notch 3 is formed so that the apex 3a of the notch 3 coincides with the center line A, that is, the upper and lower shapes in the figure are symmetrical about the center line A, two sides 3b of the notch 3 are formed. 2c, the lengths of the two sides 3b and 3c are equal to each other, and as shown in FIG. Not preferable. Therefore, if the apex portion 3a of the notch 3 does not coincide with the middle line A as described above, the lengths of the two sides 3b and 3c differ when the two sides 3b and 3c of the notch 3 are abutted. Therefore, as shown in FIG. 2B, there is no step at the abutting portion of the two sides 3b and 3c, and thus the appearance of the reflector can be finished beautifully.

  Further, as shown in FIG. 3A, the notch 3 may be formed so as to draw a smooth curve in which the two sides 3b and 3c of the notch 3 are curved toward each other. When the two sides 3b and 3c of the notch 3 are each formed in a straight line, there is a gap between the butted portions 3b and 3c due to processing variations and the elastic force of the plate-like member 1 when the two sides 3b and 3c are butted. May occur. Therefore, if the two sides 3b and 3c of the notch 3 are formed with smooth curves as described above, it is possible to prevent a gap from being generated at the abutting portion of the two sides 3b and 3c.

  In addition, it cannot be overemphasized that this embodiment can be used instead of the reflecting plate 11 used for the lighting fixture of a prior art example, and is applicable also to lighting fixtures other than a prior art example.

It is a figure which shows embodiment of the reflecting plate for lighting fixtures of this invention, (a) is a principal part perspective view, (b) is the figure seen from the one end side of a reflecting plate, (c) is a principal part expanded view. is there. It is a figure which shows an example of the matching method of a notch same as the above, (a) is a principal part expanded view, (b) is a figure which shows the case where the vertex of a notch is shifted from a centerline, (c) is a notch It is a figure which shows the case where the vertex of is made to correspond with a center line. It is a figure which shows an example of the shape of a notch same as the above, (a) is a principal part expanded view, (b) is a principal part side view of a reflecting plate. It is a figure which shows the conventional lighting fixture, (a) is a whole perspective view, (b) is a principal part side view, (c) is a principal part side view of a reflecting plate.

Explanation of symbols

1 plate-like member 2 taper part 3 notch

Claims (3)

A pair of straight tube discharge lamps are formed so that a substantially center in the short direction of a long plate-like member is bent along the longitudinal direction so that a cross section perpendicular to the longitudinal direction is substantially V-shaped. A reflector for a lighting fixture that is arranged so that a top portion having a substantially V-shaped cross section protrudes a predetermined dimension vertically below the opening surface of the fixture main body that houses the discharge lamp, and reflects light from each discharge lamp. Further, at both end portions in the longitudinal direction, tapered portions that are inclined vertically upward from the top portion toward the outside in the longitudinal direction are respectively provided integrally with the plate-like member, and the tapered portions are provided in the short direction of the plate-like member. It consists of two sides of a notch formed by cutting out an approximately triangular point toward the one side at an arbitrary point inside one side along the two sides, and each of the two sides of the notch consists of a smooth curve A reflector for lighting fixtures. The said taper part is a reflecting plate for lighting fixtures of Claim 1 formed so that the vertex of a notch may not correspond with the approximate center in the transversal direction of a plate-shaped member . 3. A lighting fixture comprising: the reflector for lighting fixture according to claim 1; a socket to which a discharge lamp is detachably mounted; and a fixture main body to which the reflector for lighting fixture and the socket are attached .

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