JP2006012499A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of reducing the light output of a light source with a required brightness maintained. <P>SOLUTION: The light system comprises an apparatus body 2 having a light source 1 that is fixed on a wall, and a globe 3 for covering the light source 1. The globe 3 includes a first globe part 3a arranged in front of the light source 1 and a second globe part 3b that is disposed round the light source 1 in such a way as to engage with the first globe part 3a, and when viewed from the front direction, the second globe part 3b has an extending part 3c that extends outwardly from the engaging portion with the first globe 3a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting device.

  As this type of conventional example, the one described in JP-A-11-213725 can be mentioned. As shown in FIG. 6, this lighting fixture has a fixture body J1 and a globe J2, and the fixture body J1 has a light source J3 and is attached to a wall J4. And the substantially cylindrical attachment part J1b which protrudes ahead is provided in the outer peripheral part of the disk-shaped base J1a, and the convex base J1c for attachment stand holding | maintenance is provided in the center side. Inside the mounting portion J1b, a glove packing holding portion J1d is formed, and a fixing projection J1e in the shape of a thread for fixing the globe is formed at a predetermined pitch. The instrument body J1 is attached to the wall J4 by screwing an attachment screw J8 inserted into the base portion J1a to the wall J4 side so as to press the attachment packing J7 between the wall J4 and the wall J4. The lamp socket J9 is attached to the base J1c at the rear end side of the cylindrical body. A heat shield plate J10 is provided near the upper side of the light source J3 of the lamp socket J9 in order to prevent heat from the light source J3. The light source J3 is composed of, for example, a 60 W incandescent lamp and is attached to the lamp socket J9. J13 is a lead wire drawn from the wall J4 and connected to the lamp socket J9.

In the lighting fixture configured as described above, the globe J2 is provided with a light distribution control unit J11 that refracts light from the light source J3 as a spot light in a direction away from the wall J4 at a position facing downward of the globe J2. It is possible to obtain spot light whose irradiation direction is downward and away from the wall surface. For this reason, for example, when a mirror is installed on the lower wall surface of the luminaire, spot-like light is irradiated in the downward direction, and a brighter light distribution can be obtained during grooming such as face washing and makeup. Moreover, since it is a spreading | diffusion part other than the light distribution control part of a glove, even if it sees a lighting fixture from the front or a side, it is not dazzling.
Japanese Patent Laid-Open No. 11-213725 (FIG. 1)

  However, in the above conventional example, when the luminaire is viewed from the front, the brightness of the globe J2 is uniform. For example, when the light output of the light source is reduced to save energy, the entire globe J2 is used. Will be uniformly dark. Accordingly, the light output of the light source is reduced while maintaining the brightness, that is, the energy saving effect cannot be achieved.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an illumination device capable of reducing the light output of a light source while maintaining brightness.

  In the lighting device according to claim 1, the device includes an instrument body that has a light source and is attached to the wall, and a glove that covers the light source, and the glove includes a first glove portion that is disposed on the entire surface of the light source, A second glove part that engages with the first glove part and is disposed on a side surface of the light source, and a part that engages with the first glove part of the second glove part in a front view, It has the protrusion part which protrudes to the side of a 2nd glove part, It is characterized by the above-mentioned.

  The lighting device according to claim 2 is characterized in that the second globe portion is integrally formed.

  The illumination device according to claim 3 is characterized in that the transmittance of the first globe part with respect to all light rays is smaller than the transmittance of the second globe part.

  The illumination device according to claim 4 is characterized in that an uneven portion for diffusing light is formed on a side surface of the second globe portion.

  In the present specification, the “edge effect” refers to the following effects. That is, for example, a member that is substantially rectangular in cross-sectional view and transmits and guides light (for example, air having a refractive index of about 1.3 to 1.5 and a refractive index of about 1.0. In the case where there is an acrylic whose refractive index is greater than the refractive index, when the member is irradiated with light, a part of the light incident on the member from the side surface of the member is totally reflected inside the member. Is repeated to reach one end of the rectangular member, and the brightness of the end portion (edge portion) is higher than the side surface of the member.

  As described above, in the first aspect of the present invention, the part of the second glove part that engages with the first glove part has a protruding part that protrudes to the side of the second glove part in front view. Therefore, the light emitted from the light source is guided through the second globe part, and the brightness of the edge part protruding to the side of the second globe part increases. That is, even when the light output of the light source is reduced, the brightness of the edge portion does not decrease so much, and the decrease in the brightness of the first glove portion can be compensated.

  In the invention according to claim 2, since the second globe part is integrally formed, the light guide efficiency of the light irradiated from the light source in the second globe part can be increased.

  Furthermore, in the invention described in claim 3, since the transmittance of the first globe part with respect to all the light rays is smaller than the transmittance of the second globe part, the second globe with respect to the first globe part. The brightness and clearness of the part, particularly the edge part, are improved, and the design of the lighting device is improved.

  Furthermore, in the invention described in claim 4, since the uneven portion for diffusing light is formed on at least a part of the side surface of the second globe portion, the brightness of the side surface of the second globe portion is changed. The design of the lighting device can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 shows a cross-sectional view of the illumination device, and FIG. 2 shows a front view of the illumination device. 3 shows a perspective view of the present lighting device, and FIG. 4 shows an edge effect of the protruding portion 3c of the globe 3 in the present lighting device. Further, FIG. 5 shows a modification of the protruding portion 3c. This illuminating device can be installed in various places, such as a bathroom and a washroom, for example.

  Next, the configuration of each unit will be described.

  The light source 1 serves as a light source in the illumination device of the present invention, and is composed of, for example, a krypton bulb having a light emitting portion with a diameter of approximately 30 mm. In the light source 1, a base portion (not shown) is screwed into a front side recess (not shown) of the socket 5. The socket 5 is attached to the wall 8 so as to protrude to the front surface side with respect to the base 6, and a power supply power supply line 10 is connected to the socket 5 on the rear end surface side. Further, the light source 1 is arranged in such a manner that a part of the outer shape of the light source 1 is on the line connecting the protruding portions 3c of the second globe portion 3b provided above and below in the cross-sectional view. In view, it is arranged so as to be approximately in the center of the globe 3.

  In the present embodiment, a krypton bulb is used as the light source 1, but the light source 1 may be a general incandescent bulb of about 60W.

  The instrument body 2 serves as a base on which the light source 1 and the globe 3 are fixed in the illumination device of the present invention, and includes a cylindrical support portion 6 a on the outer peripheral portion of the disc-shaped base 6. . An opening 6 b for attaching the socket 5 is formed at the center of the base 6. Further, a reflector 6c that is substantially parallel to the wall 8 in a cross-sectional view is disposed on the front side of the instrument body 2, and light irradiated upward or downward from the light source 1 is reflected by the reflector 6c. And light is effectively utilized. Furthermore, the base body 6 is tightly fixed to the wall 8 with a mounting screw 9 via packing or the like.

  The globe 3 covers the light source 1, prevents the light source 1 and the socket 5 from being affected by water vapor, moisture, etc., and diffuses light from the light source 1 so as not to be dazzled by the user. is there. The globe 3 further includes a first globe portion 3 a disposed on the entire surface of the light source 1 and a second globe portion 3 b that engages with the first globe portion 3 a and is disposed on the side surface of the light source 1. ing.

  The first globe portion 3a is made of a milky white member, and has a substantially arcuate shape that covers the light source 1 in a cross-sectional view, and a substantially circular shape in a front view. In the present embodiment, as a milky white member of the first globe portion 3a, a white pigment such as titanium oxide or barium sulfate is dispersed in a transparent thermoplastic resin from the viewpoint of further suppressing unnecessary light quantity in the sky direction. Methacrylic resin is used. The wall thickness of the first glove part 3a is 1.0 mm or more required from the strength aspect of the first glove part 3a, and the increase in the weight of the first glove part 3a is suppressed as much as possible. Therefore, the thickness is set to 2.0 mm or less. In addition, if a material having a transmittance with respect to the total light (hereinafter referred to as a total light transmittance) exceeding about 70% is used, the diffusion effect on the surface of the first glove portion 3a becomes insufficient, and the illumination glove's flesh is insufficient. Since the thickness must be increased, titanium oxide, barium sulfate, or the like is appropriately dispersed and blended in the methacrylic resin so that the total light transmittance is 70% or less. In the present embodiment, a methacrylic resin is used. Of course, a milky white member in which a white pigment such as titanium oxide or barium sulfate is mixed with polycarbonate or glass may be used.

  Further, an uneven portion 4 for diffusing light from the light source 1 is provided on the lower surface side of the first globe portion 3a along the periphery of the side surface of the first globe portion 3a. And this uneven | corrugated | grooved part 4 is integrally molded with the 1st glove part 3a. The uneven portion 4 has an effect like a prism that refracts light. The uneven portion 4 irradiates light from the light source 1 as spot light in a direction away from the wall 8 and downward. For this reason, for example, when a mirror is installed on the lower wall surface of the lighting device, spot-like light is irradiated in the downward direction, and a brighter light distribution can be obtained during grooming such as face washing and makeup.

  The second globe portion 3b is made of a transparent member, and the shape of the second globe portion 3b is substantially circular in a front view as the opening expands in the vertical direction as the distance from the wall 8 increases. . And the part which engages with the 1st glove part 3a of the 2nd glove part 3b protrudes to the side of the 2nd glove part 3b at least, and the part which forms this projection part 3c in front view The outer periphery includes a first glove portion 3a. That is, the protruding portion 3c is formed in a substantially ring shape along the outer periphery of the connection portion between the first globe portion 3a and the second globe portion 3b. And all the parts of the 2nd glove part 3b containing this projection part 3c are integrally formed. For this reason, when the light from the light source 1 guides the inside of the second globe portion 3b, light loss can be reduced, and the light can be efficiently guided to the end of the protruding portion 3c. it can.

  As a transparent member of the second globe portion 3b, in this embodiment, a clear methacrylic resin having a total light transmittance of 80% or more is used in order to make the edge effect due to the light of the protruding portion 3c more pronounced. Yes. If the total light transmittance is less than 80%, when the user looks at the second glove part 3b, the outline of light due to the edge effect of the protruding part 3c may not be clearly recognized. In particular, if the difference in total light transmittance between the first globe portion 3a and the second globe portion 3b is about several percent, it may not be clear whether the protruding portion 3c has an edge effect. In the present embodiment, the total light transmittance of the first globe portion 3a is at least 10% smaller than the transmittance of the second globe portion 3b. It becomes.

  And if the transparency of the 2nd glove part 3b is improved as mentioned above, a methacryl resin can be made to look like a glass material, and the high-quality feeling of the whole illuminating device can be improved.

  Further, the wall thickness of the second glove part 3b is 1.0 mm or more required from the strength surface of the second glove part 3b in the same manner as the first glove part 3a. In order to suppress the increase in the weight of the globe part 3b as much as possible, the wall thickness is set to 2.0 mm or less. However, in order to produce the edge effect more effectively, the wall thickness may be about 3.0 mm at the expense of some increase in the weight of the second glove part 3b. The edge effect can be emphasized as the thickness increases, that is, the thickness of the edge portion increases. In particular, when the edge effect is emphasized in this way, it is possible to produce a lightness and a high-class feeling of the lighting device. Further, even if the edge effect is emphasized in this way, the methacrylic resin can be made to look like a glass material, and the high-quality feeling of the entire lighting device can be improved.

  In this embodiment, transparent acrylic is used as the material of the second globe portion 3b. However, as with the first globe portion 3a, other transparent members such as polycarbonate or glass may be used. Good.

  In addition, the protruding portion 3c of the second globe portion 3b may be inclined with respect to the thickness direction as shown in FIG. 5A in cross-sectional view, as shown in FIG. 5B. As shown in FIG. 5C, it may be triangular. In the case shown in FIG. 5 (a), when the user views the present lighting device from an oblique direction, the sharp end of the protruding portion 3c on the wall 8 side is brighter than the front side, so that the user can You can feel the feeling. In the case of the one shown in FIG. 5B, the brightness of the sharp end portion at the approximate center of the protruding portion 3c increases in the thickness direction, so that the user can feel a sharp feeling. In the case of what is shown in FIG.5 (c), since the illuminating device is wound by the ring of double light, the designability of an illuminating device can be improved.

  Further, in the present embodiment, the protruding portions 3c are provided continuously around the entire periphery of the second globe portion 3b. Of course, the protruding portions 3c are provided around the second globe portion 3b at regular intervals. Alternatively, it may be provided discretely. In short, if the protruding portion 3c is provided on at least a part of the periphery of the second globe portion 3b, an edge effect can be obtained.

  As described above, according to the present embodiment, the portion of the second glove part 3b that engages with the first glove part 3a protrudes at least to the side of the second glove part 3a, and the second glove part Since the refractive index of 3b is larger than that of air, the light incident from the light source 1 into the second globe part 3a is guided to the projecting part 3c of the second globe part 3a, and an edge effect can be produced. it can. For this reason, even when the light output of the light source 1 is reduced for energy saving, the brightness of the first globe part 3a can be supplemented by the brightness of the protruding part 3c.

It is sectional drawing which shows this illuminating device. It is a front view which shows this illuminating device. It is a perspective view which shows this illuminating device. It is a figure which shows the edge effect of the protrusion part 3c of the globe 3 in this illuminating device. It is a figure which shows the modification of the protrusion part 3c. It is sectional drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source 2 Instrument body 3 Globe 3a 1st glove part 3b 2nd glove part 4 Uneven part

Claims (4)

An instrument main body having a light source and attached to a wall, and a glove that covers the light source, the glove being engaged with the first glove part and the first glove part disposed on the entire surface of the light source, A second glove portion disposed on the side surface, and a portion engaging with the first glove portion of the second glove portion in a front view protrudes to the side of the second glove portion. A lighting device having a protruding portion. The lighting device according to claim 1, wherein the second globe portion is integrally formed. The lighting device according to claim 2, wherein the transmittance of the first globe part with respect to all light rays is smaller than the transmittance of the second globe part. The illumination device according to any one of claims 1 to 3, wherein an uneven portion for diffusing light is formed on at least a part of a side surface of the second globe portion.

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