JPWO2012157104A1 - Lighting device - Google Patents

Abstract

Provided is an illuminating device which can hold a surface light source panel reliably without causing the surface light source panel to bend without causing the surface light source panel to be easily attached and detached. A lighting device includes a panel support disposed in an opening of a housing, having an outer edge larger than the surface light source panel and holding the surface light source panel on the housing, and a panel support for the housing And a hinge portion that rotatably supports the panel support body. The panel support or the surface light source panel has a temporary fixing portion of a convex portion that hooks and stops the surface light source panel when the panel support is opened.

Description

  The present invention relates to an illumination device using a surface light source panel.

  2. Description of the Related Art A surface light source panel is widely used as a plate-like backlighting means used for a flat display device such as a liquid crystal display device, ie, a backlight light source. The backlight light source includes a row of a plurality of LEDs (light emitting diodes) or CCFL (cold cathode fluorescent lamp), a transparent rectangular light guide plate or diffusion plate that propagates light emitted from the linear light source in a planar shape, and , And planar light emission. An LED surface light emitting panel that emits light in a substantially planar shape in which a plurality of LEDs are arranged in a matrix on a plane is also known as a surface light source panel. Furthermore, organic EL panels and inorganic EL panels, which are self-luminous planar light emitting elements in the form of films or plates using organic EL elements or inorganic EL elements using electroluminescence (hereinafter referred to as EL), are also attracting attention as surface light source panels. Has been.

  In recent years, organic EL elements have been put into practical use in the fields of mobile phones, car navigation systems, and TV displays, and further applied to lighting fixtures as flexible thin surface light source panels. For example, Patent Document 1 proposes a light-emitting panel type luminaire that uses snap coupling in order to improve workability of replacing a light-emitting panel. As shown in FIG. 1, the light-emitting panel type lighting fixture includes a light-emitting panel 1, a holding member 2 that holds the light-emitting panel 1, and a housing 3 that covers and accommodates the back side, and is embedded in a ceiling 6. Arranged. In this lighting fixture, the engaging portion 17 and the engaged portion 35 provided on one edge of the light emitting panel 1 and the opposite edge of the light emitting panel 1 so as to emit light downward from the main surface of the light emitting panel 1. The light emitting panel 1 is held horizontally by the holding member 2 and the swing support portion 33 that sandwich the portion.

  The swing support portion 33 is provided to support the holding member 2 sandwiching the light emitting panel 1 so as to be swingable vertically as shown in FIG. 2 from the horizontal (FIG. 1). It is connected to 33 by a swing shaft to form a hinge.

  As shown in FIG. 3, the front surface of the holding member 2 is provided with a concave groove 21 a that extends over the entire width and is recessed backward. The groove width of the groove 21a is set to be slightly larger than the thickness of the light emitting panel 1, and the edge of one side of the light emitting panel 1 can be inserted into the groove 21a. Moreover, the main-body part 21 can be elastically deformed in the direction which the groove width of the ditch | groove 21a spreads. A hemispherical projection 21b that can be fitted into the fitting hole 18 is provided on each side surface of the concave groove 21a sandwiching the light emitting panel 1 at a position corresponding to the fitting hole 18 of the light emitting panel 1. Then, when the light emitting panel 1 is inserted into the concave groove 21a, the protrusion 21b is pushed by the light emitting panel 1 and elastically deforms so that the main body 21 spreads outward, and the fitting hole 18 is in a position that matches the protrusion 21b. When coming, the projection 21b is fitted into the fitting hole 18 by the restoring force of the main body 21, whereby the light emitting panel 1 and the holding member 2 are engaged (snap-coupled), and the light emitting panel 1 becomes the holding member 2. Retained. On the contrary, if the light emitting panel 1 is pulled out from the concave groove 21a, the fitting state between the projection 21b and the fitting hole 18 is released by elastically deforming the main body portion 21 so as to spread outward again. It can be removed from the holding member 2.

  In such a conventional lighting device, as shown in FIG. 2, the light emitting panel 1 snap-coupled to the holding member 2 is pulled downward from the concave groove 21a while being swung downward by the swing support portion 33. The light emitting panel 1 can be removed, and conversely, the light emitting panel 1 can be snap-coupled to the holding member 2 if one side of the light emitting panel 1 is pushed into the concave groove 21a and pushed up.

JP 2007-250303 A

  There is also a demand for thinner and larger lighting fixtures that use a planar light source such as a planar light source panel.

  However, in the technique disclosed in Patent Document 1, it is necessary to accurately insert the edge of the light-emitting panel as a thin surface light source into the thin concave groove 21a of the holding member. When replacing a large light-emitting panel, workability is significantly deteriorated. In addition, since the large light-emitting panel itself is heavy, there is a problem that it is difficult to sufficiently hold the panel by snap coupling.

  In the case of a thin light-emitting panel or a light-emitting panel made of a film substrate, the strength of the panel is not sufficient, so that the panel itself can not withstand the force of inserting one side of the light-emitting panel into the holding member and bends. Further, when the light emitting panel is held at one end and leveled, there is a problem that the light emitting panel is bent without supporting its own weight.

  Therefore, in the present invention, it is an example of an object to provide an illuminating device that can hold the surface light source panel reliably without causing the surface light source panel to bend with high workability for attaching and detaching the surface light source panel.

  An illuminating device according to the present invention is an illuminating device including a surface light source panel, and is provided with a housing having an opening and an outer edge that is disposed in the opening of the housing and is larger than the surface light source panel and on the housing side. A panel support that holds the panel; and a hinge that rotatably supports the panel support relative to the housing and that allows the panel support to be opened and closed. The illumination device according to the present invention is characterized in that the panel support or the surface light source panel has a temporary fixing portion of a convex portion that hooks and stops the surface light source panel when the panel support is opened.

It is side surface sectional drawing which shows the conventional light emission panel type lighting fixture. It is side surface sectional drawing of the conventional light emission panel type lighting fixture when a holding member is rotated below. It is an expanded sectional side view of the principal part of the holding member and the light emission panel in the conventional light emission panel type lighting fixture. It is a schematic front view which shows the illuminating device of embodiment by this invention. It is a schematic sectional drawing of the AA line in FIG. It is a schematic sectional drawing which shows the illuminating device of embodiment by this invention which shows the state which opened the panel support body. It is a schematic front view which shows the example of the panel support body of the illuminating device of embodiment by this invention. It is a schematic rear view which shows the panel support body of the illuminating device of embodiment by this invention. It is a schematic rear view which shows the surface light source panel of the illuminating device of embodiment by this invention. It is a schematic sectional drawing which shows the illuminating device of embodiment by this invention which shows the state which opened the panel support body. It is a general | schematic partially notched perspective view which shows the hinge part of the illuminating device of other embodiment by this invention. It is a schematic sectional drawing which shows the illuminating device of other embodiment by this invention which shows the state which opened the panel support body. It is a schematic sectional drawing which shows the illuminating device of other embodiment by this invention which shows the state which opened the panel support body. It is a schematic sectional drawing which shows the illuminating device of other embodiment by this invention which shows the state which opened the panel support body.

  Embodiments according to the present invention will be described below with reference to the drawings.

  FIG. 4 is a front view showing the lighting device 51 of this embodiment attached to a ceiling (not shown). FIG. 5 is a cross-sectional view taken along line AA in FIG.

  FIG. 5 shows a state when the lighting device 51 is normally used, and FIG. 6 shows a state where the panel support 53 is opened when the surface light source panel 55 is replaced. In FIG. 6, the downward direction of the illumination device 51 is the light extraction direction. In addition, although the illuminating device 51 demonstrates as what is installed in a ceiling, you may install not only in what is arrange | positioned in a ceiling but in walls other than a ceiling, such as a wall surface perpendicular | vertical to a floor surface, for example. Here, the downward direction is referred to as the gravitational direction (vertical downward), and the upward direction is referred to as the direction opposite to the gravitational direction (vertical upward).

  The illumination device 51 includes a housing 52, a panel support 53, a hinge portion 54, a surface light source panel 55, a drive circuit 56, and a fastener 57. A temporary fixing pin 58 is provided so as to protrude from the panel support 53 to the back side, and passes through a through hole (pin insertion port 59) provided in the surface light source panel 55. The columnar body of the temporary fixing pin 58 and the pin insertion port 59 are formed so that there is a gap in the temporary insertion pin 58 so that the temporary fixing pin 58 is inserted into the pin insertion port 59 to constitute a temporary fixing structure. . The surface light source panel 55 is electrically connected to the drive circuit 56 by a cable connector Cc.

  Below, it demonstrates for every main component of the illuminating device 51. FIG.

[Case]
The housing 52 stores a panel support 53, a hinge portion 54, a surface light source panel 55, a drive circuit 56, and the like. A flange FL is provided around the opening 52a of the casing 52 so as to be an attachment portion to the ceiling, and the panel support 53 is disposed in the opening 52a with a gap G so as to be substantially flush with the flange FL. The panel support 53 is supported by the hinge portion 54 and the fastener 57 so that the side on which the surface light source panel 55 is fixed faces the inside of the housing 52.

[Panel support]
The panel support 53 is a member for fixing the surface light source panel 55, has a mounting portion ST that supports at least the periphery of the surface light source panel 55, and has a frame shape having an outer edge larger than the surface light source panel 55 or It is a plate-shaped rigid body. As shown in FIG. 5, the upper surface of the panel support 53 is configured to hold the lower surface of the surface light source panel 55. However, when the illumination opening 62 of the panel support 53 is a through hole, the surface light source panel 55 is supported only at the periphery thereof, but is not held at least at one point or only one side. . Since the panel support 53 has an outer edge larger than the surface light source panel 55, the surface light source panel 55 is held at a plurality of points or a plurality of edges of the annular mounting portion ST.

  Usually, when using the illuminating device 51, the surface light source panel 55 is fixed horizontally to the housing 52 as shown in FIG. 5 together with the panel support 53. The material of the panel support 53 is not particularly limited as long as the material has sufficient strength, and may be a metal, an alloy, a resin, a plastic, wood, or the like.

  An example of the light extraction structure of the panel support 53 is as follows.

  As shown in FIG. 5, the panel support 53 may be a frame in which a through-hole-shaped illumination opening 62 is provided in a portion where the surface light emitting unit of the surface light source panel 55 is located. Light emission from the surface light source panel 55 is taken out through the illumination opening 62.

  As shown in FIG. 7A, the whole panel support 53a may be a plate formed of a light-transmitting material such as glass, a transparent resin such as acrylic, or transparent plastics. Light emission from the surface light source panel 55 is extracted through the panel support 53a.

  Further, as shown in FIG. 7B, a panel support is provided as a plate body in which a translucent plate 53c made of a translucent material such as glass or acrylic resin is fitted and arranged in the illumination opening 62 of the panel support frame 53b. It may be a body light extraction structure. Light emission from the surface light source panel 55 is extracted through the translucent plate 53c.

  Further, as shown in FIG. 7C, the panel support light extraction structure may be a plate body in which a grid made of metal, resin, or the like is arranged in the illumination opening 62 of the panel support frame 53b. Light emission from the surface light source panel 55 is taken out through the illumination opening 62.

  The panel support may be provided with an optical member (not shown) such as an optical film or a phosphor for the purpose of light emission diffusion and color matching of the surface light source panel. The front side of the panel support 53 also serves as a decorative panel.

[Hinge part]
The hinge portion 54 is a mechanism that rotatably supports the panel support 53 with respect to the casing 52 and allows the panel support 53 to be opened and closed. Specifically, the hinge portion 54 is disposed between the housing 52 and one side of the outer peripheral edge of the panel support 53, and the panel support 53 can be rotated with respect to the housing 52. Is supported. For example, the hinge portion 54 is provided with a tube portion at a part of at least one end of the housing 52 and the panel support 53, and a shaft 54a is fitted to the tube portion, and each is coupled by the shaft 54a. The support 53 is rotated. Therefore, as shown in FIG. 6, when the fastener 57 is removed, the panel support 53 pivotally supported by the housing 52 is rotatable downward about the shaft 54 a of the hinge portion 54. The hinge portion 54 is preferably rotatable so that the casing 52 and the panel support 53 spread to an angle of 45 degrees or more so that the surface light source panel 55 can be easily replaced.

[Surface light source panel]
As the surface light source panel 55, an organic EL panel, which is a self-luminous planar light emitting element, is used in the lighting device, but an inorganic EL panel may be used instead.

  An LED surface light emitting panel may be used as the surface light source panel. The surface light source panel may be a light-emitting plate that uses a light guide plate or a diffusion plate that propagates light emitted from a linear light source of LED or CCFL in a planar shape so that the emitted light can be extracted in a planar shape.

[Temporary fixing part]
FIG. 8 shows a state in which the panel support 53 is viewed from the back side when the panel support 53 is opened. FIG. 9 shows the surface light source panel 55 viewed from the back side. As shown in FIG. 8, the panel support 53 is provided with temporary fixing pins 58 (temporary fixing portions). As shown in FIG. 9, the surface light source panel 55 is provided with a pin insertion port 59 into which the temporary fixing pin 58 is inserted. The arrangement of the temporary fixing pin 58 and the pin insertion port 59 is set in advance so that the surface light source panel 55 is positioned so as to be aligned with the light extraction surface on the panel support 53. Here, when the panel support 53 is opened, the two temporary fixing pins 58 of the convex portion are provided on the mounting portion ST surrounding the illumination opening portion 62 so as to be positioned on the horizontal line. The two pin insertion openings 59 are provided on the periphery of the surface light emitting portion of the surface light source panel 55 so that the surface light emitting portion of the surface light source panel 55 and the illumination opening 62 are aligned. The set of the temporary fixing pin 58 and the pin insertion port 59 is not limited to two, and may be one set or three or more sets.

  The surface light source panel 55 is fixed on the panel support 53 by a latch Lt of the support 53 provided on one side adjacent to the side on which the set of temporary fixing pins 58 is provided as shown in FIG. However, the fixing of the surface light source panel 55 is not limited to the latch, and a known fixing method such as screwing can be applied.

[Drive circuit]
The drive circuit 56 is connected to a power supply line such as the surface light source panel 55 via the conductive cable Cc, and is an electric circuit for supplying power to the surface light source panel 55. When the surface light source panel 55 includes a plurality of light emitting elements, the driving circuit 56 may be configured so that at least two of the light emitting elements can be driven under different conditions.

  At least two power supply lines to the surface light source panel are required for the organic EL panel and the inorganic EL panel. In addition, when a surface light source panel having a plurality of light emitting elements is used or when it is desired to drive each light emitting element under different conditions, three or more power supply lines are required.

[Fastener]
The fastener 57 is a member for fixing the panel support 53 to the housing 52. The fastener 57 is provided on the hinge portion facing side of the casing 52 in order to support one side of the outer peripheral edge of the panel support 53 facing the hinge portion 54. The structure and material of the fastener 57 are not particularly limited as long as the fastener 57 has sufficient strength to withstand the weight of the panel support 53 and the surface light source panel 55. It is desirable that the fastener 57 can be opened and closed with at least one hand. The fastener 57 and the panel support 53 need not be fixed to each other.

[Replacement of surface light source panel]
A procedure for replacing the surface light source panel 55 will be described.

  As shown in FIG. 10, after removing the old surface light source panel from the temporary fixing pin 58 in a state where the panel support 53 is opened downward, the pin insertion port 59 of the new surface light source panel 55 is connected to the panel. The new surface light source panel 55 can be hung on the temporary fixing pin 58 by being inserted into the temporary fixing pin 58 of the support 53. In this state, the panel support 53 and the surface light source panel 55 are fixed by a latch (not shown). The conductive cable Cc from the drive circuit 56 is connected to the surface light source panel 55. When the surface light source panel 55 is replaced, the panel support 53 is only hung on the casing 52, so that it is not necessary to remove the panel support 53 and temporarily place it below.

[Hinge modification]
Further, the hinge portion 54 may have a structure that allows the panel support 53 to be detached from the housing 52.

  FIG. 11 is a schematic partial cutaway perspective view showing a hinge portion between the housing 52 and the panel support 53 of the lighting device, and shows a state in which a part of the housing 52 is cut off. For example, in the removable hinge portion 54 shown in FIG. 11 (a), a pair of grooves 52 b each having a bowl-shaped inner wall surface are formed on the opposing side walls of the casing 52 in a similar shape, and the panel support 53 A pair of fixed shafts 54a is fitted into the groove 52b. Normally, the shaft 54a is pivotally supported by the flange 52c at the end of the bowl shape. When the shaft 54a is removed, the panel support 53 is removed from the casing 52 by moving the shaft 54a upward and moving it horizontally and downward. It becomes possible.

  A removable hinge portion 54 shown in FIG. 11B is formed by forming a pair of grooves 53b having bowl-shaped inner wall surfaces on opposite side walls of the panel support 53 in a similar shape (or through the grooves 53b). And a pair of shafts 54a fixed to the casing 52 may be fitted into the grooves 53b. In the configuration shown in FIG. 11B, the shaft 54a is normally pivotally supported by the flange 53c at the tip of the bowl. When removing the panel support 53, the panel support 53 is turned downward to be vertical, and then lifted and moved in the horizontal direction of the shaft 54a, so that the panel support 53 can be removed from the housing 52.

  When the panel support 53 has a structure that can be removed by the hinge portion 54, the panel support 53 can be removed to work on a table or the like. As a result, the burden on the replacement work can be reduced. In particular, a surface light source panel that easily breaks and a surface light source panel that easily bends such as a film are particularly effective.

[Temporary fixing part deformation example]
In the above embodiment, as the temporary fixing structure, the temporary fixing pin 58 of the convex portion and the pin insertion port 59 of the concave portion are respectively corresponding positions of the panel support 53 and a part of the surface light source panel 55 so as to be caught in the vertical direction. However, the temporary fixing pin and the pin insertion opening of the recess may be reversed. That is, as shown in FIG. 12, two temporary fixing pins 58 are provided in the vicinity of the upper edge of the surface light source panel 55 as temporary fixing portions, and the pin insertion port 59 of the concave portion is used as the panel support 53. You may form in the corresponding position. Again, when the panel support 53 is opened, the two temporary fixing pins 58 of the convex portion are provided on the mounting portion surrounding the illumination opening 62 so as to be positioned on the horizontal line. Thus, the remaining one of the panel support 53 or the surface light source panel 55 having the temporary fixing pin 58 of the temporary fixing portion can have a concave portion that is hooked with the temporary fixing pin 58.

  Further, as shown in FIG. 13, two temporary fixing pins 58 are provided on the lower back side of the light extraction portion of the panel support 53, and one side of the lower end portion of the surface light source panel 55 is temporarily provided there. It can also be set as the structure which mounts and stands. According to this, even if the surface light source panel 55 has a certain degree of strength and is heavy, it can be hooked on the panel support 53.

  Further, as shown in FIG. 14, two convex temporary fixing pins 58 are provided on the upper outer edge of the surface light source panel 55, and the surface light source panel 55 is temporarily fixed on the upper outer edge of the panel support 53. A configuration in which the pin 58 is hooked is also possible. In these modified examples, the temporary fixing pin 58 (pin insertion port 59) is different from the above-described embodiment, and other configurations are the same. Therefore, the same configuration using the same reference numerals will be described. Is omitted, and different configurations are described. As described above, since one of the panel support 53 and the surface light source panel 55 has the temporary fixing portion 58 of the convex portion, the surface light source panel 55 can be hooked and stopped.

  According to the present invention, even when replacing a large surface light source panel, the surface light source panel is temporarily fixed to the panel support by being hooked by a temporary fixing portion such as one temporary fixing pin of the panel support or the surface light source panel. Therefore, both hands of the operator are freed, and the subsequent workability is improved. Even if the surface light source panel is heavy, the frame of the panel support has a structure in which the edge supports at least the edge of the panel. Therefore, the large surface light source panel can be safely and securely held without causing bending.

  In addition, according to the present invention, even in the case of a thin surface light source panel, the surface light source panel is fixed so as to be in close contact with the entire frame of the panel support, so that even a surface light source panel with low strength can be reliably bent without bending. A surface light source panel can be held.

DESCRIPTION OF SYMBOLS 51 Illuminating device 52 Case 52a Opening 53 Panel support body 54 Hinge part 55 Surface light source panel 56 Drive circuit 57 Fastener 58 Temporary fixing pin 59 Pin insertion port 62 Illumination opening part Cc Cable connector

Claims (4)

A lighting device including a surface light source panel,
A housing having an opening;
A panel support disposed in the opening of the housing, having an outer edge larger than the surface light source panel and holding the surface light source panel on the housing side;
A hinge portion that rotatably supports the panel support with respect to the housing and that allows the panel support to be opened and closed.
The said panel support body or the said surface light source panel has a temporary fixing part of the convex part which hooks and stops the said surface light source panel when the said panel support body is opened.   The lighting device according to claim 1, wherein the remaining one of the panel support body or the surface light source panel having the temporary fixing portion has a concave portion that is hooked to the temporary fixing portion.   The said hinge part has a bowl-shaped groove | channel which supports the axis | shaft of the said hinge part so that the said panel support body and the said housing | casing can be mutually attached or detached. Lighting device.   The lighting device according to claim 1, wherein the surface light source panel is an organic EL panel or an inorganic EL panel.

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