JP2017174785A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of increasing a rotation angle while one embodiment decreases the number of components and improves assemblability.SOLUTION: A luminaire comprises: a cylindrical enclosure with a bottom; an arm body attached to a bottom surface of the enclosure around a rotation axis in a vertical direction; and a pair of arm parts extending from both ends of the arm body to positions where respective tips of the arm part are opposed to each other. An arm central axis of the arm body in a longer direction includes: an arm member formed to be displaced from a vertical axis and a horizontal axis of the enclosure; a lamp body pivotally supported between tips of the pair of arm parts having a rotation axis in the horizontal direction; and a projection part provided from the bottom surface of the enclosure toward the space inside the enclosure. The arm body is provided with a contact part which touches the projection part and is formed from the horizontal axis of the enclosure toward the arm central axis.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lighting device capable of adjusting a light irradiation direction.

  An illumination device that can change the direction of light irradiation is known. Such an illuminating device is desired to further increase the degree of freedom in changing the angle by rotating the instrument body about an axis perpendicular to the mounting surface such as the ceiling.

JP 2014-186805 A

  Embodiments of the present invention provide an illumination device with a high degree of freedom in changing the angle.

  According to the illuminating device of the embodiment, a bottomed cylindrical housing, an arm main body that is attached to the bottom surface of the housing with a vertical rotation axis as a center, and respective distal ends from both ends of the arm main body And a pair of arm portions extending at positions facing each other, and an arm central axis in the longitudinal direction of the arm main body is formed by shifting from a vertical axis and a horizontal axis of the housing; and A lamp body pivotally supported between the distal ends of the pair of arm portions and having a horizontal rotation axis; a protrusion provided from the bottom surface of the housing toward the space in the housing; The abutting portion that abuts on the protruding portion is formed closer to the arm center axis from the horizontal axis of the housing.

  According to the illumination device of the embodiment, the degree of freedom in the light irradiation direction can be increased.

FIG. 1 is a cross-sectional view showing the appearance of the illumination device of the first embodiment. FIG. 2 is a perspective view showing a lamp body incorporated in the illumination device of the first embodiment. FIG. 3 is a perspective view showing an arm unit incorporated in the illumination device of the first embodiment. FIG. 4 is a plan view showing the internal structure of the lighting apparatus according to the first embodiment. FIG. 5 is a plan view showing the internal structure of the illumination device of the first embodiment.

  1 to 5 show a first embodiment. FIG. 1 is a cross-sectional view showing the appearance of the illumination device of the first embodiment. FIG. 2 is a perspective view showing a lamp body incorporated in the illumination device of the first embodiment. FIG. 3 is a perspective view showing an arm unit incorporated in the illumination device of the first embodiment. FIG. 4 is a plan view showing the internal structure of the lighting apparatus according to the first embodiment. FIG. 5 is a plan view showing the internal structure of the illumination device of the first embodiment.

  The downlight type illumination device 10 of the present embodiment is embedded in a recess Sa provided on a ceiling surface S and has a bottomed cylindrical casing 20 that opens downward, and the casing 20 is disposed in the recess Sa. A mounting spring 30 is provided, and a control board 40 and a control component 41 for supplying power to a lamp body 50 to be described later are provided. A lamp body 50 is disposed in the housing 20 so as to be rotatable about a vertical axis E and a horizontal axis H within a predetermined range.

  An arm member 60 attached around the vertical axis E is attached to the bottom surface 21 of the housing 20. The arm member 60 extends from the arm body 61 toward the opening of the housing 20 from the arm body 61 disposed substantially horizontally along the bottom surface 21 of the housing 20, and has respective distal end portions 62 a and 63 a. Are provided with a pair of arm portions 62 and 63 provided at positions facing each other. A screw 80 is inserted into the central portion of the arm body 61 so as to be rotatable about the vertical axis E. A line connecting the tip portions 62a and 63a is a horizontal axis H. It is preferable that the vertical axis E of the rotation shaft portion 65 coincides with the rotation center of the lamp body 50.

  The arm body 61 is provided with notches 61a and 61b that are offset from the horizontal axis so as to sandwich the vertical axis E therebetween. The notches 61a and 61b are formed up to the central axis direction in the longitudinal direction of the arm main body. This notch restricts rotation by coming into contact with the protrusion 70 that suppresses the angle around the vertical axis E.

  The lamp body 50 includes a bottomed cylindrical lamp body 50 that is pivotally supported between the tip portions 62a and 63a of the pair of arm portions 62 and 63 and has a horizontal rotation axis. In the lamp body 50, an LED light emitting module, a light bulb socket and the like are arranged.

  The bottom surface 21 of the housing 20 is provided with a protruding portion 70 that protrudes downward at a position separated from the vertical axis E.

  A pair of cutout portions (contact portions) 61 a and 61 b provided on the same side surface side of the arm body 61 are provided. When the arm main body 61 is rotated around the vertical axis E, these notches (contact portions) 61 a and 61 b have a function of contacting the protrusion 70 and restricting the rotation range of the arm main body 61. . At this time, since the line connecting the notches 61a and 61b, that is, the line connecting the contact position with the protrusion 70 is set to pass through the vertical axis E, the rotation range of the arm body 61 is 180. °.

  The arm body 61 is provided with protrusions 64 and 66 that protrude downward and abut against the lamp body 50. The protrusions 64 and 66 are provided on the opposite side across the rotation shaft 65 and have a function of restricting the rotation range of the lamp body 50 around the horizontal axis H.

  Next, adjustment (tilt direction and rotation direction) of the irradiation direction of the lamp body 50 in the illumination device 10 described above will be described. For the rotation around the horizontal axis H formed between the tip portions 62a and 63a of the pair of arm portions 62 and 63, that is, the tilt direction, the preferred angle is determined by pressing the lamp body 50 or the like. At this time, the outer wall of the lamp body 50 comes into contact with one of the projecting portions 64 and 66 when the angle exceeds a predetermined value. Therefore, excessive rotation can be prevented and the wiring can be prevented from being tangled.

  On the other hand, for rotation about the vertical axis E, the lamp body 50 is rotated by rotating the arm body 61 around the rotation shaft portion 65. At this time, when the rotation angle is greater than or equal to a predetermined angle, as shown in FIGS. 4 and 5, the protrusion 70 enters the notches 61 a and 61 b and abuts on the arm body 61. Accordingly, it is possible to prevent excessive rotation, prevent the wiring from being tangled, and ensure the rotation angle in a range of 180 °.

  According to the illuminating device 10 configured in this way, it is not necessary to provide a projection for restricting the rotation range around the horizontal axis H on the inner peripheral surface of the housing 20, so that the lamp body 50 is accommodated in the housing 20. The work to do is simplified. Further, since the restriction of the rotation range around the horizontal axis H and the restriction of the rotation range around the vertical axis E can be performed by one arm member 60, the number of parts can be reduced. Therefore, the direction of the light source can be easily adjusted to the direction that the user wants to irradiate.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Illuminating device, 20 ... Housing, 40 ... Control board, 50 ... Lamp body, 60 ... Arm member, 61 ... Arm main body, 61a, 61b ... Notch part (contact part), 62, 63 ... Arm part, 64 , 66 ... Projection part, 65 ... Rotating shaft part, 70 ... Projection part, 80 ... Screw, S ... Ceiling surface.

Claims (2)

A bottomed cylindrical casing;
An arm main body attached to the bottom surface of the housing with a vertical rotation axis as a center, and a pair of arm portions extending from both ends of the arm main body to positions where the respective front end portions face each other; An arm central axis in the longitudinal direction of the arm main body is formed by shifting an arm member from a vertical axis and a horizontal axis of the housing;
A lamp body pivotally supported between the distal ends of the pair of arm portions and having a horizontal rotation axis;
A protrusion provided from the bottom surface of the housing toward the space in the housing;
The lighting device according to claim 1, wherein a contact portion that contacts the protrusion is formed on the arm body closer to the arm center axis than the horizontal axis of the housing.   The lighting device according to claim 1, wherein the arm portion is provided with a protruding portion that protrudes downward and comes into contact with the housing.