BACKGROUND
[0001] In recent years, a lighting system including a semiconductor light-emitting element
such as an LED (Light Emitting Diode) as a light source is used. For example, there
is a lighting system in which a body including a light source is provided to be capable
of turning around a turning center line serving as a center axis in turning the vertical
direction and the horizontal direction of a lighting system main body. In such a lighting
system, a substantially cylindrical inner frame, to which the body is attached, is
attached to and capable of turning by sliding on a substantially cylindrical outer
frame for fixing the lighting system itself to an indoor ceiling. A turning amount
of the inner frame with respect to the outer frame is regulated to a predetermined
amount. A plate of the indoor ceiling is sandwiched by a flange section included in
the outer frame and an elastic member attached to the outer frame, whereby the lighting
system is attached and fixed to the indoor ceiling.
[0002] However, the lighting system is unstably attached and fixed to the indoor ceiling.
When the body including the light source is turned around the turning center line
serving as the center axis in turning the vertical direction and the horizontal direction
of the lighting system main body, the lighting system is sometimes suddenly detached
and unfixed.
[0003] It is an object of the present embodiments to provide a lighting system that is easily
and firmly attached and fixed to an indoor ceiling.
BRIEF DESCRIPTION OF THE DRAWINGS
[0004]
FIG. 1 is a perspective view showing the configuration of the lighting system according
to an embodiment;
FIG. 2 is a top view showing the configuration of the lighting system;
FIG. 3 is a perspective view showing the configuration of a fixing section of the
lighting system;
FIG. 4 is an exploded perspective view showing the configuration of the lighting system;
FIG. 5 is an exploded perspective view showing the configuration of a body of the
lighting system;
FIG. 6 is a perspective view showing the lighting system;
FIG. 7 is a diagram showing an attachment form for attaching the lighting system to
an indoor ceiling; and
FIG. 8 is a diagram showing an attachment form for attaching the lighting system to
the indoor ceiling.
DETAILED DESCRIPTION
[0005] A lighting system according to embodiments is explained below with reference to the
drawings. Components having the same functions in the embodiment are denoted by the
same reference numerals and signs and redundant explanation of the components is omitted.
The lighting system explained in the embodiment below is only an example and does
not limit the embodiment. For example, in the embodiment, the lighting system is a
universal downlight set on a ceiling of a building and including an LED (Light Emitting
Diode) as a light source. However, the lighting system is not limited to this and
may be a lighting system including a semiconductor light source in general as a light
source. The embodiment and modifications of the embodiment may be combined as appropriate
without being contradictory to each other.
[0006] A lighting system (e.g., a lighting system 1) according to the first embodiment includes
a body (e.g., a body 10), a turning frame (e.g., a decoration frame 30), holding sections
(e.g., fixing sections 60a to 60c), and elastic sections (e.g., spring sections 60a2
to 60c2). A light-emitting element is mounted on the body (the body 10). A turning
barrel (e.g., a turning barrel 20) is annularly attached to the body (the body 10).
The turning frame (e.g., the decoration frame 30) includes a circumferential edge
section (e.g., a flange 31) at one circumferential end having a substantially cylindrical
shape fit in an attachment hole of a ceiling plate. The turning barrel (e.g., the
turning barrel 20) is fit in the turning frame (e.g., the decoration frame 30) to
be capable of turning in the turning barrel (e.g., the turning barrel 20). The holding
sections (e.g., the fixing sections 60a to 60c) are attached to the turning frame
(e.g., the decoration frame 30) in a state in which the turning barrel (e.g., the
turning barrel 20) is fit in the turning frame (e.g., the decoration frame 30). The
holding sections (e.g., the fixing sections 60a to 60c) hold the fitting of the turning
barrel (e.g., the turning barrel 20) in the turning frame (e.g., the decoration frame
30). The elastic sections (e.g., the spring sections 60a2 to 60c2) are attached to
the turning frame (e.g., the decoration frame 30). The elastic sections (e.g., the
spring sections 60a2 to 60c2) sandwich the turning frame (e.g., the decoration frame
30), the holding sections (e.g., the fixing sections 60a to 60c), and the ceiling
plate using an elastic force in conjunction with the circumferential edge section
(e.g., the flange 31).
[0007] In a lighting system (e.g., the lighting system 1) according to the second embodiment,
the holding sections (e.g., the fixing sections 60a to 60c) further include pedestal
sections (e.g., pedestal sections 60a1-1 to 60c1-1), elected sections (e.g., erected
surfaces 60a1-3 to 60c1-3), upper surfaces (e.g., upper surfaces 60a1-4 to 60c1-4),
pressing sections (e.g., pressing plate sections 60a1-1L, 60a1-1R to 60c1-1L, and
60c1-1R), and leg sections (e.g., pedestal leg sections 60a1-2L, 60a1-2R-60c1-2L,
and 60c1-2R). The elastic sections (e.g., the spring sections 60a2 to 60c2) are placed
on the pedestal sections (e.g., the pedestal sections 60a1-1 to 60c1-1). The erected
sections (e.g., the erected surfaces 60a1-3 to 60c1-3) are erected on the pedestal
sections (e.g., the pedestal sections 60a1-1 to 60c1-1). The upper surfaces (e.g.,
the upper surfaces 60a1-4 to 60c1-4) extend from the erected sections (e.g., the erected
surfaces 60a1-3 to 60c1-3) to the outer circumferential side of the turning frame
(e.g., the decoration frame 30) and press the elastic sections (e.g., the spring sections
60a2 to 60c2) placed on the pedestal sections (e.g., the pedestal sections 60a1-1
to 60c1-1). The pressing sections (e.g., pressing plate sections 60a1-1L, 60a1-1R
to 60c1-1L, and 60c1-1R) extend from the pedestal sections (e.g., the pedestal sections
60a1-1 to 60c1-1) to the inner circumferential side of the turning frame (e.g., the
decoration frame 30) and, when attached to the turning frame (e.g., the decoration
frame 30), press one circumferential end of the turning barrel (e.g., the turning
barrel 20). The leg sections (e.g., pedestal leg sections 60a1-2L, 60a1-2R-60c1-2L,
and 60c1-2R) respectively extend from both ends of the pedestal sections (e.g., the
pedestal sections 60a1-1 to 60c1-1) on a substantially cylindrical circumference of
the turning frame to the opposite side of a side where the erected sections (e.g.,
the erected surfaces 60a1-3 to 60c1-3) are erected. Surfaces oppose to each other
of the leg sections (e.g., pedestal leg sections 60a1-2L, 60a1-2R-60c1-2L, and 60c1-2R)
come into contact with predetermined parts of the turning frame (e.g., the decoration
frame 30).
[0008] In a lighting system (e.g., the lighting system 1) according to the third embodiment,
the elastic sections (e.g., the spring sections 60a2 to 60c2) further include arm
sections (e.g., arm sections 60a2-2 to 60c2-2) and protecting sections (e.g., cap
sections 60a3 to 60c3). The arm sections (e.g., the arm sections 60a2-2 to 60c2-2)
extend to the outer circumferential side of the turning frame (e.g., the decoration
frame 30). The protecting sections (e.g., the cap sections 60a3 to 60c3) are attached
to distal ends of the arm sections (e.g., the arm sections 60a2-2 to 60c2-2) extending
to the outer circumferential side of the turning frame (e.g., the decoration frame
30) and protect the distal ends.
[0009] In a lighting system (e.g., the lighting system 1) according to the fourth embodiment,
the elastic sections (e.g., the spring sections 60a2 to 60c2) are attached to the
turning frame (e.g., the decoration frame 30) at substantially equal intervals together
with the holding sections (e.g., the fixing sections 60a to 60c).
[0010] In a lighting system (e.g., the lighting system 1) according to the fifth embodiment,
the elastic sections (e.g., the spring sections 60a2 to 60c2) are torsion springs.
[0011] In a lighting system (e.g., the lighting system 1) according to the sixth embodiment,
the elastic sections (e.g., the spring sections 60a2 to 60c2) are leaf springs.
Embodiment
Configuration of a lighting system
[0012] FIG. 1 is a perspective view showing the configuration of a lighting system according
to the embodiment. FIG. 2 is a top view showing the configuration of the lighting
system. FIG. 1 is a perspective view of a lighting system 1 according to the embodiment
viewed from an upward oblique direction on the opposite side of a light irradiating
direction. FIG. 2 is a top view of the lighting system 1 shown in FIG. 1 viewed from
an upward direction on the opposite side of the light irradiating direction. Directions
shown in FIGS. 1 and 2 are the same direction.
[0013] The lighting system 1 is, for example, a downlight embedded and set in a ceiling
of a building. The lighting system 1 causes a semiconductor light-emitting element
such as an LED mounted on the inside thereof to emit light to thereby irradiate light
in a downward direction shown in FIG. 1. The lighting system 1 includes a body 10,
a decoration frame 30, a turning regulating section 40, and fixing sections 60a to
60c.
[0014] The body 10 includes thermal radiation fins 11, a lens frame 15, and a turning barrel
20. The thermal radiation fins 11 are formed of metal excellent in thermal radiation
properties such as aluminum die cast. The lens frame 15 is assembled below the thermal
radiation fins 11 and houses, for example, a board in which an LED is arranged as
a light source. The turning barrel 20 is formed of metal such as aluminum die cast
in a substantially cylindrical shape. In the lighting system 1, the thermal radiation
fins 11 side of the body 10 is referred to upper and the turning barrel 20 side is
referred to as lower. The turning barrel 20 includes, in one part at a substantially
cylindrical upper end, a projecting section 21 extending in an outer circumferential
direction (see FIG. 2).
[0015] The decoration frame 30 is formed of, for example, metal such as aluminum die cast.
The decoration frame 30 has a substantially cylindrical shape opened in substantially
circular shapes respectively at upper and lower ends thereof. The decoration frame
30 adjusts, using the cylindrical shape thereof, an irradiating direction of light
irradiated from the body 10. The decoration frame 30 includes a substantially annular
flange 31 in a lower part thereof and includes a circumferential sidewall 32 erected
from the inner circumference of the flange 31. The decoration frame 30 corresponds
to a turning frame for sliding the fit-in turning barrel 20 to thereby turn the turning
barrel 20 along the inner circumference of the decoration frame 30.
[0016] The turning regulating section 40 is attached to one place of the circumferential
sidewall 32 of the decoration frame 30 by screwing screws 41. The turning regulating
section 40 includes a contact section 40a extending from an attachment position to
the decoration frame 30 toward the center direction of the decoration frame 30 in
an upper part at the circumferential upper end of the turning barrel 20 fit in the
decoration frame 30. When the body 10 turns along the inner circumference of the decoration
frame 30, the projecting section 21 of the turning barrel 20 comes into contact with
the contact section 40a and regulates the turning of the body 10.
[0017] The decoration frame 30 includes attaching sections 33a to 33c arranged on the circumferential
sidewall 32 at substantially equal intervals. As shown in FIG. 1, the fixing sections
60a to 60c are respectively attached to the attaching sections 33a to 33c. Below-mentioned
spring leg sections 60a2-3L and 60a2-3R are fit in predetermined fitting grooves of
the attaching sections 33a to 33c, whereby the fixing sections 60a to 60c are respectively
attached to the attaching sections 33a to 33c. As explained in detail below, the fixing
sections 60a to 60c sandwich a ceiling plate, to which the lighting system 1 is attached,
in conjunction with the flange 31 of the decoration frame 30 to thereby fix the lighting
system 1 to the ceiling plate.
[0018] In FIG. 1, the arm sections 60a2-2 to 60c2-2 of the attaching sections 33a to 33c
are respectively shown in different forms. The attaching sections 33a to 33c have
the same configuration except attachment positions. A form of the arm sections 60a2-2
to 60c2-2 shown below in FIG. 6 is an initial form in a state in which an external
force is not applied thereto.
[0019] The arm section 60a2-2 shown in FIG. 1 is present in a position to which the arm
section 60a2-2 is moved slightly upward from the form shown in FIG. 6 by an external
force resisting an elastic force applied to the arm section 60a2-2. Compared with
the arm section 60a2-2 shown in FIG. 1, the arm section 60b2-2 shown in FIG. 1 is
present in a position to which the arm section 60b2-2 is moved further upward by an
external force resisting an elastic force applied to the arm section 60b2-2. Compared
with the arm section 60b2-2 shown in FIG. 1, the arm section 60c2-2 shown in FIG.
1 is present in a position to which the arm section 60c2-2 is moved upward to the
maximum by an external force resisting an elastic force applied to the arm section
60c2-2.
[0020] As shown in FIGS. 1 and 2, the fixing sections 60a to 60c are attached to the decoration
frame 30 in a state in which the body 10, in which the turning barrel 20 is fit, is
fit in the decoration frame 30. The fixing sections 60a to 60c press the upper end
of the turning barrel 20 from above using pressing plate sections 60a1-1L, 60a1-1R
to 60c1-1L, and 60c1-1R. The pressing plate sections 60a1-1L, 60a1-1R to 60c1-1L,
and 60c1-1R are extending sections extending from below-mentioned pedestal sections
60a1 -1 to 60c1-1 of the fixing sections 60a to 60c attached to the outer circumference
of the decoration frame 30 toward the center direction of the decoration frame 30.
The pressing plate sections 60a1-1L, 60a1-1R to 60c1-1L, and 60c1-1R press the upper
end circumference of the turning barrel 20 of the body 10 fit in the decoration frame
30. Even when the turning barrel 20 turns with respect to the decoration frame 30,
the fixing sections 60a to 60c do not come into contact with the projecting section
21 and regulate the turning.
[0021] The turning barrel 20 is attached to the decoration frame 30 to be capable turning
by the pressing by the pressing plate sections 60a1-1L, 60a1-1R to 60c1-1L, and 60c1-1R
and is suppressed from coming off the decoration frame 30.
[0022] The turning barrel 20 and the decoration frame 30 are formed of the same material
or different materials adopted taking into account frictional resistance and turning
torque in turning the turning barrel 20 with respect to the decoration frame 30. For
example, both of the turning barrel 20 and the decoration frame 30 may be formed of
metal. Alternatively, for example, both of the turning barrel 20 and the decoration
frame 30 may be formed of resin such as ABS (Acrylonitrile Butadiene Styrene). Alternatively,
for example, one of the turning barrel 20 and the decoration frame 30 may be formed
of metal and the other may be formed of resin. Alternatively, for example, the turning
barrel 20 and the decoration frame 30 may be formed of materials having different
coefficients of friction.
Configuration of the fixing section and an attachment form to the decoration frame
Configuration of a fixing section and attachment form to a decoration frame
[0023] FIG. 3 is a perspective view showing the configuration of the fixing section of the
lighting system according to the embodiment. FIG. 4 is an exploded perspective view
showing the configuration of the lighting system. In FIG. 3, the fixing sections 60a
to 60c have the same configuration. Therefore, the fixing section 60a is representatively
explained. In FIG. 4, for simplification of explanation, the body 10 is not shown.
Only a form for attaching the fixing sections 60a to 60c to the decoration frame 30
is shown. However, actually, after the body 10 is fit in the decoration frame 30,
the fixing sections 60a to 60c are attached to the decoration frame 30 to press the
turning barrel 20 of the body 10 not to come off the decoration frame 30.
[0024] As shown in FIGS. 3 and 4, the fixing section 60a includes a pedestal section 60a1,
a spring section 60a2, and a cap section 60a3.
[0025] The pedestal section 60a1 includes pressing plate sections 60a1-1L and 60a1-1R extending
from the vicinities of both ends of a pedestal surface 60a1-1. The pedestal section
60a1 includes pedestal leg sections 60a1-2L and 60a1-2R extending downward respectively
from the pressing plate sections 60a1-1L and 60a1-1R. The pedestal section 60a1 includes
an erected surface 60a1-3 erected from one end side of the pedestal surface 60a1-1
and an upper surface 60a1-4 extending from the erected surface 60a1-4 and forming
a surface substantially parallel to the pedestal surface 60a1-1. The pedestal section
60a1 includes, on the pedestal surface 60a1-1, an insert-through hole 60a1-5 through
which a screw 60a4 is inserted.
[0026] As explained above, the pressing plate sections 60a1-1L and 60a1-1R are sections
that press the turning barrel 20 of the body 10 from the upper end circumference when
the fixing section 60a is attached to the attaching section 33a of the decoration
frame 30. The pedestal leg sections 60a1-2L and 60a1-2R are sections that come into
contact with predetermined parts of the attaching section 33a and hold an attachment
position of the pedestal section 60a1 to the attaching section 33a when the fixing
section 60a is attached to the attaching section 33a of the decoration frame 30.
[0027] The upper surface 60a1-4 includes upper pressing plate sections 60a1-4L and 60a1-4R
extending from the vicinities of both ends of the upper surface 60a1-4 in a direction
opposite to a direction in which the pressing plate sections 60a1-1L and 60a1-1R extend.
The upper surface 60a1-4 and upper pressing plate sections 60a1-4L and 60a1-4R are
formed in a substantially U shape viewed from above. The substantially U-shaped sections
are sections with which the arm section 60a2-2 comes into contact when an arm section
60a2-2 of a below-mentioned spring section 60a2 is elastically deformed by an external
force and pushed upward to the maximum.
[0028] When viewed from a side, the pedestal section 60a1 is formed in a substantially U
shape by the pedestal surface 60a1-1, the erected surface 60a1-3, and the upper surface
60a1-4. As explained below, the substantially U-shaped section is a section in which
coil springs 60a2-1L and 60a2-1R of the spring section 60a2 are housed. The coil springs
60a2-1L and 60a2-1R are pressed from above by the upper pressing plate sections 60a1-4L
and 60a1-4R.
[0029] The spring section 60a2 is formed of metal having elasticity. The spring section
60a2 includes the coil springs 60a2-1L and 60a2-1R, the substantially U-shaped arm
section 60a2-2, and spring leg sections 60a2-3L and 60a2-3R. The spring leg section
60a2-3L extends from a first winding terminal end of a coil of the coil spring 60a2-1L
downward substantially in parallel to the pedestal leg section 60a1-2L.
[0030] Similarly, the spring leg section 60a2-3R extends from a first winding terminal end
of a coil of the coil spring 60a2-1R downward substantially in parallel to the pedestal
leg section 60a1-2R. The spring leg sections 60a2-3L and 60a2-3R respectively pass
near extending bases of the pressing plate sections 60a1-1L and 60a1-1R of the pedestal
section 60a1 and extend from above to below the pedestal section 60a1.
[0031] A substantially U-shaped first end portion of the arm section 60a2-2 is connected
to a second winding terminal end of the coil of the coil spring 60a2-1L. A substantially
U-shaped second end portion of the arm section 60a2-2 is connected to a second winding
terminal end of the coil of the coil spring 60a2-1R.
[0032] The spring section 60a2 is, for example, a torsion spring. The coil springs 60a2-1L
and 60a2-1R of the sprig section 60a2 give an elastic force to the arm section 60a2-2.
The coil springs 60a2-1L and 60a2-1R locate the arm section 60a2-2 in a position shown
in FIG. 6 as an initial state of the arm section 60a2-2 with respect to the decoration
frame 30 in a state in which the spring leg sections 60a2-3L and 60a2-3R are fit in
predetermined fitting grooves of the attaching section 33a of the decoration frame
30.
[0033] When the arm section 60a2-2 is pulled upward from the state shown in FIG. 6, the
arm section 60a2-2 is pulled up resisting the elastic force by the coil springs 60a2-1L
and 60a2-1R. To hold a state in which the arm section 60a2-2 is pulled upward, it
is necessary to hold the arm section 60a2-2 with a resisting force resisting the elastic
force by the coil springs 60a2-1L and 60a2-1R.
[0034] The cap section 60a3 is fit on a substantially U-shaped distal end portion of the
arm section 60a2-2 to protect the substantially U-shaped bending distal end portion.
The cap section 60a3 is formed of resin such as ABS resin.
[0035] As shown in FIG. 4, the spring section 60a2 attached with the cap section 60a3 is
assembled to the pedestal section 60a1. The spring leg sections 60a2-3L and 60a2-3R
of the assembled spring section 60a2 are fit in predetermined fitting grooves of the
attaching section 33a of the decoration frame 30. The pedestal leg sections 60a1-2L
and 60a1-2R of the pedestal section 60a1 come into contact with predetermined parts
of the attaching section 33a of the decoration frame 30.
[0036] The pedestal section 60a1 reinforces the attachment of the fixing section 60a in
the decoration frame 30 using the pedestal leg sections 60a1-2L and 60a1-2R in a state
in which the spring leg sections 60a2-3L and 60a2-3R are fit in the predetermined
grooves of the attaching section 33a of the decoration frame 30. Further, the pedestal
section 60a1 holds an attachment position of the fixing section 60a in the decoration
frame 30 using the pedestal leg sections 60a1-2L and 60a1-2R. The screw 60a4 is inserted
through the insert-through hole 60a1-5 and screwed in a predetermined screw hole of
the attaching section 33a, whereby the pedestal section 60a1 is firmly attached to
the decoration frame 30.
[0037] A method of firmly fixing the pedestal section 60a1 to the decoration frame 30 is
not limited to screwing by the screw. The pedestal section 60a1 may be firmly fixed
to the decoration frame 30 by a push pin or the like. Like the pedestal section 60a1,
the pedestal sections 60b1 and 60c1 are firmly fixed to the decoration frame 30.
[0038] The fixing section 60a is easily attached to the decoration frame 30 by the configuration
explained above. Even when the turning barrel 20 slides on the decoration frame 30
to thereby turn with respect to the decoration frame 30, at least one of surfaces
opposed to each other of the pedestal leg sections 60a1-2L and 60a1-2R comes into
contact with the predetermined part of the attaching section 33a. Therefore, the fixing
section 60a can hold the fixed position of the decoration frame 30.
Configuration of the body
[0039] FIG. 5 is an exploded perspective view showing the configuration of the body of the
lighting system according to this embodiment.
[0040] The body 10 includes thermal radiation fins 11, a board 12, a lens base 13, a color
rendering filter 14, a lens frame 15, and the turning barrel 20. As shown in FIG.
5, the body 10 is configured by assembling the turning barrel 20, the lens frame 15,
the color rendering filter 14, the lens base 13, the board 12, and the thermal radiation
fins 11 in this order from below. The thermal radiation fins 11 radiates heat emitted
by a light source mounted face down on the board 12 located under the thermal radiation
fins 11. The thermal radiation fins 11 include holes at both ends of the diameter
of a substantially circular circumference of a flat placing surface. An electric cable
(not shown in the figure) for supplying electric power to the light source mounted
on the board 12 is laid upward in the thermal radiation fins 11.
[0041] On the lower surface of the board 12, LEDs (not shown in the figure) are arranged
as light sources. The board 12 includes a control circuit (not shown in the figure)
configured to supply electric power to a plurality of LEDs via the electric cable
and control light emission of the LEDs. The board 12 includes cutout sections at both
ends of the diameter of a substantially circular circumference.
[0042] The lens base 13 includes lenses 13a. In FIG. 5, one lens is denoted by reference
sign 13a. However, members having truncated cone shapes formed on the lens base 13
correspond to the lenses 13a. The lens base 13 diffuses or focuses lights emitted
from the LEDs arranged on the board 12. The board 12 is housed in the lens base 13
from above. The color rendering filter 14 is attached to the lens base 13 from below.
Groove sections for attaching the color rendering filter 14 are provided on the inner
circumference of the lens base 13. The groove sections include concave sections on
the inner circumference of the lens base 13 and guide grooves for guiding below-mentioned
projecting sections of the color rendering filter 14 from the lower end of the lens
base 13 to the concave sections.
[0043] The lens base 13 includes bending sections at both ends of the diameter of a substantially
cylindrical main body. The bending sections are concave sections on the outer circumference
of the lens base 13 and are convex sections on the inner circumference of the lens
base 13. When the board is housed in the lens base 13 from above, the cutout sections
of the board 12 are aligned with the convex sections of the lens base 13.
[0044] When the color rendering filter 14 transmits lights emitted by the LEDs arranged
on the board 12, the color rendering filter 14 adds a color to the lights. The color
rendering filter 14 includes, at both ends of the diameter of a substantially circular
circumference, projecting sections for attaching the color rendering filter 14 to
the lens base 13. The projecting sections are inserted from the guide grooves. After
the projecting sections reaches the concave sections, the color rendering filter 14
is rotated a predetermined angle to be attached to the lens base 13. Various members
replacing the color rendering filter 14 may be attached in the same manner as the
color rendering filter 14.
[0045] The lens frame 15 houses the lens base 13 in which the board 12 is housed and to
which the color rendering filter 14 is attached. The lens frame 15 includes, at both
ends of the diameter of a substantially circular circumference, convex sections projecting
to the inner circumference. The convex sections of the lens frame 15 include screw
holes. The thermal radiation fins 11 are attached to the lens frame 15 from above
in a state in which the lens base 13 in which the board 12 is housed and to which
the color rendering filter 14 is attached is housed in the lens frame 15.
[0046] When the lens base 13 is housed in the lens frame 15 from above, the concave sections
of the lens base 13 are aligned with the convex sections of the lens frame 15. The
attachment of the thermal radiation fins 11 to the lens frame 15 is performed by,
after aligning the holes of the thermal radiation fins 11 and the screw holes of the
lens frame 15, screwing screws inserted through the holes of the thermal radiation
fins 11 into the screw holes of the lens frame 15. The attachment of the thermal radiation
fins 11 to the lens frame 15 is not limited to the screwing and may be pinning.
[0047] The lens frame 15 includes turning shaft ports 15a and 15b. The lens frame 15 includes
a turning shaft hole that pierces through the turning shaft ports 15a and 15b along
line I-I shown in FIG. 5.
[0048] The lens frame 15 is housed in the turning barrel 20 from above. The tuning barrel
20 includes turning shaft ports 23a and 23b. After the lens frame 15 is housed in
the turning barrel 20 and line I-I of the lens frame 15 and line II-II of the turning
barrel 20 are aligned, a screw or a pin is inserted through the turning shaft ports
23a and 23b to fix the turning barrel 20. In this way, the body 10 including the lens
frame 15 is fixed to the turning barrel 20. Alternatively, the turning barrel 20 is
annularly attached to the body 10. The body 10 is capable of turning with respect
to the turning barrel 20 around a turning center line serving as a center axis in
turning line II-II (or line I-I).
[0049] The turning center line, which is the center axis in turning the turning barrel 20
on the inner circumference of the decoration frame 30, and line II-II (or line I-I),
which is the turning center line serving as the center axis in turning the body 10
with respect to the turning barrel 20 are in a torsional positional relation in a
space.
[0050] The turning barrel 20 includes the projecting section 21 on the circumference at
the upper end. As explained above, the projecting section 21 of the turning barrel
20 comes into contact with the contact section 40a of the turning regulating section
40 attached to the decoration frame 30 to thereby regulate the turning barrel 20 from
turning with respect to the decoration frame 30 exceeding a predetermined turning
angle.
Appearance of the lighting system attached with the fixing sections
[0051] FIG. 6 is a perspective view showing the lighting system according to the embodiment.
FIG. 6 shows an initial state of a fixed state in which, in the lighting system 1,
the body 10 is attached to the decoration frame 30 and the body 10 is fixed to the
decoration frame 30 by the fixing sections 60a to 60c. In the lighting system 1 in
the state shown in FIG. 6, the cap sections 60a3 to 60c3 are respectively fit to bending
distal end portions of the arm sections 60a2-2 to 60c2-2 of the fixing sections 60a
to 60c. In the following explanation, a state of the lighting system 1 in which the
arm sections 60a2-2 to 60c2-2 are in the state shown in FIG. 6 is referred to as initial
state.
[0052] In the state shown in FIG. 6, the distal end portions, to which the cap sections
60a3 to 60c3 are attached, of the arm sections 60a2-2 to 60c2-2 of the fixing sections
60a to 60c are bent to below the flange 31 of the decoration frame 30. Therefore,
the decoration frame 30 is prevented from directly coming into contact with an arrangement
surface by the distal end portions of the cap sections 60a3 to 60c3 functioning as
legs.
[0053] The lower surface of the decoration frame 30 is a section exposed to the outside
when the lighting system 1 is attached to the ceiling. On the other hand, the fixing
sections 60a to 60c including the cap sections 60a3 to 60c3 are sections hidden in
the ceiling without being exposed to the outside when the lighting system 1 is attached
to the ceiling.
[0054] Therefore, since the decoration frame 30 does not directly come into contact with
the arrangement surface as shown in FIG. 6, for example, before work for attaching
the lighting system 1 to the ceiling surface is started, it is possible to prevent
the decoration frame 30 from being scratched or damaged by contact of a surface on
which the lighting system 1 is provisionally placed.
Attachment form for attaching the lighting system to an indoor ceiling
[0055] FIGS. 7 and 8 are diagrams showing an attachment form for attaching the lighting
system according to the embodiment to an indoor ceiling. FIG. 8 is a diagram of the
attachment form of the lighting system 1 viewed from a B direction shown in FIG. 7.
[0056] When the lighting system 1 is embedded and set in a ceiling plate 100 of a building,
the arm sections 60a2-2 to 60c2-2 of the fixing sections 60a to 60c are lifted to
a position where the arm sections 60a2-2 to 60c2-2 are substantially parallel to the
circumferential sidewall 32 of the decoration frame 30. The lighting system 1 is inserted
in an embedding hole of the ceiling plate 100 in a state in which the fixing sections
60a to 60c are lifted to a position where the fixing sections 60a to 60c are substantially
parallel to the circumferential sidewall 32 of the decoration frame 30. The lighting
system 1 is pushed up until the flange 31 comes into contact with the ceiling.
[0057] Since the arm sections 60a2-2 to 60c2-2 are not pressed by an external force, the
arm sections 60a2-2 to 60c2-2 change to a state shown in FIGS. 7 and 8. The ceiling
plate 100 is sandwiched between the arm sections 60a2-2 to 60c2-2 and the flange 31.
Consequently, the lighting system 1 is embedded and set in the ceiling plate 100.
Modifications
[0058] In the embodiment explained above, the spring sections 60a2 to 60c2 of the fixing
sections 60a to 60c equally arranged on the circumferential sidewall 32 of the decoration
frame 30 of the lighting system 1 are the torsion springs. However, the spring sections
60a2 to 60c2 are not limited to this and may be leaf springs. In the embodiment, the
fixing sections are the three fixing sections 60a to 60c. However, the fixing sections
are not limited to this and may be provided at substantially equal intervals in two
place or four or more places of the decoration frame 30.
[0059] In the embodiment, the pressing plate sections provided in, for example, the fixing
section 60a are the two pressing plate sections 60a1-1L and 60a1-1R. However, the
pressing plate sections are not limited to this. The pressing plate sections extending
from the pedestal surface 60a1-1 may be one or three or more pressing plate sections.
Effects by the embodiment and the modifications
[0060] According to the embodiment and the modifications, in the lighting system 1, the
fixing sections 60a to 60c are arranged at substantially equal intervals on the circumferential
sidewall 32 of the decoration frame 30. The fixing sections 60a to 60c include, in
the pedestal sections 60a1 to 60c1 configured to support the spring sections 60a2
to 60c2, the pressing plate sections 60a1-1L, 60a1-1R to 60c1-1L, and 60c1-1R configured
to press the turning barrel 20 of the body 10 not come off the decoration frame 30.
Consequently, in the lighting system 1, it is possible to press, with an equal force,
the turning barrel 20 fit in the decoration frame 30 and stabilize turning of the
body 10 along the inner circumference of the decoration frame 30. Further, in the
lighting system 1, it is possible to press the turning barrel 20 of the body 10 not
to come off the decoration frame 30 without increasing the number of components.
[0061] According to the embodiment and the modifications, in the lighting system 1, in the
spring sections 60a2 to 60c2 of the fixing sections 60a to 60c, for example, in the
fixing section 60a, the screw 60a4 is arranged between the two coil springs 60a2-1L
and 60a2-1R. The fixing section 60a is fixed to the decoration frame 30 by the screw
60a4. Consequently, in the lighting system 1, it is possible to attach each of the
fixing sections 60a to 60c to the decoration frame 30 in a small space using one screw.
Such a configuration can be applied to each of the fixing sections 60a to 60c equally
arranged on the circumferential sidewall 32 of the decoration frame 30 of the lighting
system 1. Therefore, even in the lighting system 1 having a large size, it is possible
to attach the fixing sections 60a to 60c to the decoration frame 30 in a small space
using one screw.
[0062] According to the embodiment and the modifications, in the initial state of the lighting
system 1, for example, during attachment work for the lighting system 1, the distal
ends of the arm sections 60a2-2 to 60c2-2 of the fixing sections 60a to 60c do not
come into contact with the decoration frame 30. Therefore, in the lighting system
1, in the initial state, the decoration frame 30 is not scratched by the cap sections
60a3 to 60c3 provided for protection of the fingers of an operator in the attachment
work. It is possible to protect the lighting system 1.
[0063] While certain embodiments have been described, these embodiments have been presented
by way of example only, and are not intended to limit the scope of the inventions.
Indeed, the novel embodiments described herein may be embodied in a variety of other
forms; furthermore, various omissions, substitutions and changes in the form of the
embodiments described herein may be made without departing from the spirit of the
inventions. The accompanying claims and their equivalents are intended to cover such
forms or modifications as would fall within the scope and spirit of the inventions.