JP6402917B2 - Light emitting module holder and lighting device - Google Patents

Description

  The present invention relates to a holder for fixing a light emitting module to a base portion and an illumination device including the holder.

  In recent years, LED (Light Emitting Diode) illumination has been rapidly spread from the viewpoint of energy saving. The LED illumination is configured, for example, by attaching an LED module having a plurality of LEDs arranged on a substrate to a base portion (for example, an instrument body) of the LED illumination.

  When the LED module is attached to the base portion, the LED module needs to dissipate heat. Therefore, the LED module and the base part need to be mechanically and thermally connected.

  Therefore, there is a holder having the above connection function and having an insertion hole into which an external electric wire is inserted. Such a holder can electrically connect the electric wire and the LED module in addition to the connection function.

JP 2006-120557 A

  In the holder as described above, in order to improve the workability of inserting the electric wire, a configuration in which the electric wire is inserted obliquely with respect to the base portion can be considered. For example, Patent Literature 1 discloses an electric wire connecting device in which electric wires are inserted obliquely. In such a configuration, it is desirable that the inserted electric wire is securely connected to the terminal inside the holder.

  The present invention provides a holder that can improve the reliability of connection of a wire to a terminal, and a lighting device including the holder.

  The holder which concerns on 1 aspect of this invention is a holder for fixing the light emitting module arrange | positioned on the arrangement | positioning surface of a base part to the said base part, Comprising: The insertion which has a hole axis which cross | intersects diagonally with respect to the said arrangement | positioning surface A main body provided with a hole; a holding part for holding an electric wire placed on the hole shaft inside the main body and inserted into the insertion hole; and a contact that contacts an electrode provided on the light emitting module A contact terminal having a protrusion portion, and a protruding portion protruding toward an inner side of the main body portion is provided on an edge portion of the inner surface of the main body portion forming the insertion hole.

An illumination device according to an aspect of the present invention includes a base portion, a light emitting module disposed on a placement surface of the base portion, and a holder for fixing the light emitting module to the base portion.
The holder is provided with a main body provided with an insertion hole having a hole axis that obliquely intersects the arrangement surface, and an electric wire arranged on the hole axis inside the main body and inserted into the insertion hole. And a contact terminal having a contact portion that contacts an electrode provided in the light emitting module, and the main body portion is formed on an edge portion of the inner surface of the main body portion where the insertion hole is formed. A protruding portion that protrudes toward the inside is provided.

  The holder and the lighting device according to one embodiment of the present invention can improve the reliability of connection of the electric wire to the terminal.

1 is a perspective view showing a basic structure of a lighting apparatus according to Embodiment 1. FIG. FIG. 2 is a view for explaining the structure of the holder. FIG. 3 is an external perspective view of the contact terminal. FIG. 4 is an enlarged view of a region surrounded by a broken line B in FIG.

  Hereinafter, lighting devices according to embodiments will be described with reference to the drawings. The embodiment described below shows a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of components shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily shown strictly. Moreover, in each figure, the same code | symbol is attached | subjected to substantially the same structure, and the overlapping description may be abbreviate | omitted or simplified.

  Hereinafter, the illumination device according to the embodiment will be described with reference to the drawings.

(Embodiment 1)
[Configuration of lighting device]
First, the outline of the configuration of the lighting apparatus according to Embodiment 1 will be described with reference to FIG. FIG. 1 is a perspective view showing a basic structure of lighting apparatus 10 according to Embodiment 1. FIG.

  As shown in FIG. 1, the lighting device 10 according to Embodiment 1 fixes a base portion 12, a light emitting module 20 arranged on the arrangement surface 13 of the base portion 12, and the light emitting module 20 to the base portion 12. And a holder 30 for the purpose.

  The lighting device 10 may include other members such as a translucent cover arranged to cover the light emitting module 20 in addition to the members illustrated in FIG. However, in order to clearly describe the characteristics of the illumination device 10 according to Embodiment 1, illustration and description of these other members are omitted.

  In the first embodiment, one light emitting module 20 is disposed on the base portion 12, but the number of light emitting modules 20 is not limited, and a plurality of light emitting modules 20 are disposed side by side on the base portion 12. Also good.

  Illumination device 10 according to Embodiment 1 is, for example, an illumination device used as a so-called downlight that is embedded in a ceiling with light emitting module 20 facing downward. Although there is no particular limitation on the posture when using the illuminating device 10, in the first embodiment, the illuminating device 10 is illustrated and described with the light emitting module 20 facing upward (Z-axis + sideward).

  The light emitting module 20 is an example of a light emitting device, and includes a substrate 22 and a light emitting unit 21 disposed on the main surface 22 a of the substrate 22. The substrate 22 is a rectangular flat substrate in the first embodiment. The substrate 22 is preferably made of a material having high thermal conductivity, for example, an alumina substrate made of alumina.

  As the substrate 22, in addition to the alumina substrate, other ceramic substrates such as aluminum nitride, metal substrates such as aluminum and copper, resin substrates, or metal base substrates having a laminated structure of metal and resin, etc. Various substrates can be employed.

  The light emitting unit 21 disposed on the main surface 22a of the substrate 22 has one or more light emitting elements that emit light forward.

  In the first embodiment, the light emitting unit 21 includes one or more LED chips 21 a mounted on the substrate 22 and a sealing member. The LED chip 21a is mounted on the main surface 22a of the substrate 22 by die bonding or the like.

  In the first embodiment, the sealing member collectively seals the plurality of LED chips 21a arranged in a matrix.

  As the LED chip 21a, for example, a blue LED chip that emits blue light having a center wavelength of 440 nm to 470 nm is used.

  Moreover, as a sealing member, while sealing LED chip 21a and protecting LED chip 21a, fluorescent substance containing resin which is resin containing the fluorescent substance which carries out wavelength conversion of the light from LED chip 21a is illustrated.

  Specifically, for example, when the LED chip 21a is a blue LED as a sealing member, YAG (yttrium, aluminum, garnet) -based yellow phosphor particles are dispersed in a silicone resin in order to obtain white light. A phosphor-containing resin can be used. As a result, white light is emitted from the light emitting unit 21 (sealing member) by the yellow light wavelength-converted by the phosphor particles and the blue light from the LED chip 21a.

  In the first embodiment, the circular light emitting unit 21 is exemplified, but the overall shape of the light emitting unit 21 is not limited to the round shape. For example, a square shape may be adopted as the overall shape of the light emitting unit 21.

  Moreover, there is no limitation in particular in the aspect of sealing the some LED chip 21a by a sealing member. For example, the plurality of LED chips 21a may be individually sealed, and the plurality of LED chips 21a may be sealed for each line.

  Further, in the case where it is not necessary to convert the wavelength of light from the LED chip 21a, one or more LED chips 21a disposed on the substrate 22 may not be sealed with the sealing member.

  A pair of electrodes 24 are disposed on the main surface 22 a of the substrate 22. Electric power for light emission is supplied to each of the plurality of LED chips 21 a included in the light emitting unit 21 via a wiring pattern (not shown) connected to the electrodes 24.

  As described above, the light emitting module 20 having the LED chip 21 a as a light source is fixed to the base portion 12.

  The base portion 12 is a metal column base in the first embodiment, and the light emitting module 20 is disposed in surface contact with the arrangement surface 13 to efficiently release the heat generated in the light emitting module 20. Can do. That is, the base portion 12 is a member that functions as a heat sink that diffuses the heat of the light emitting module 20.

  In addition, the shape of the base part 12 is not limited to a cylindrical base, For example, a rectangular parallelepiped may be sufficient. Moreover, the base part 12 may have a wall part surrounding the area | region where the light emitting module 20 is arrange | positioned, for example.

  The mounting plate 14 is a resin member that functions as a frame for the light emitting module 20, and is used for mounting the light emitting module 20 together with the holder 30.

  The light emitting module 20 is fixed to the base portion 12 by the holder 30, the holder 130, and the mounting plate 14. Specifically, the light emitting module 20 is fixed by screwing the parts of the holder 30, the holder 130, and the mounting plate 14 to the base portion 12 with screws 80. In the first embodiment, the two holders of the holder 30 and the holder 130 are arranged so as to hold down two locations on the diagonal line of the rectangular light emitting module 20.

  The holder 30 and the holder 130 are components having substantially the same function, although the arrangement and the like of the insertion hole 32 are different. Similarly, the contact terminal 35 corresponding to the holder 30 and the contact terminal 135 corresponding to the holder 130 are components having substantially the same function. Hereinafter, the holder 30 will be described in detail, but the features of the holder 30 are also applied to the holder 130.

[Configuration of holder]
Next, the configuration of the holder 30 will be described with reference to FIG. 2 in addition to FIG. FIG. 2 is a view for explaining the structure of the holder. 2A is a top view (viewed from the Z axis + side), and FIG. 2B is a side view (viewed from the Y axis + side). (c) is sectional drawing in the AA of (a) of FIG.

  The holder 30 includes a main body 31 and contact terminals 35 that are electrically connected to the light emitting module 20.

  First, the main body 31 will be described.

  The main body 31 is a member that accommodates a part of the contact terminal 35 provided with the insertion hole 32. The main body 31 is manufactured by molding a synthetic resin having insulation properties such as PBT (polybutylene terephthalate).

  The insertion hole 32 is a hole having a hole axis 40 that obliquely intersects the arrangement surface 13 and into which an electric wire is inserted. That is, in the holder 30, the electric wire is inserted obliquely with respect to the arrangement surface 13 of the base portion 12. The inserted electric wire is accommodated in the main body 31.

  The outer diameter of the main body 31 of the insertion hole 32 is larger than the inner diameter of the main body 31 of the insertion hole 32. Further, a part of the inner peripheral surface of the main body 31 that forms the insertion hole 32 is formed in a tapered shape that decreases in diameter from the outer side to the inner side of the main body 31. With such a configuration, the workability of electric wire insertion can be improved.

  The electric wire inserted into the insertion hole 32 is connected to, for example, a lighting device disposed on the back side of the ceiling. For example, a hole (not shown) provided in the base portion 12 or the base portion 12 of the ceiling. It is pulled out to the arrangement surface 13 side of the base portion 12 through a hole in the vicinity of the embedded position. The lighting device is a device that converts, for example, a commercial power source into electric power having characteristics suitable for light emission of the light emitting module 20.

  Here, as shown in FIG. 2C, a protruding portion 33 that protrudes toward the inside of the main body 31 is provided on an edge portion of the inner surface of the main body 31 that forms the insertion hole 32. The protrusion 33 is a characteristic configuration of the holder 30 and will be described in detail later.

  A space 42 that accommodates a part of the contact terminal 35 and a part of the electric wire is provided inside the main body 31, and the space 42 is connected to a space outside the main body 31 via the insertion hole 32. Yes.

  Further, the main body portion 31 is provided with a through hole 41 through which a screw 80 for fixing the main body portion 31 to the base portion 12 is passed. A screw hole (not shown) into which the screw 80 is screwed is provided in the arrangement surface 13 of the base portion 12.

  Further, the main body portion 31 is provided with a first pressing portion 45 and a second pressing portion 46. The first pressing portion 45 and the second pressing portion 46 have a function of pressing the light emitting module 20 against the base portion 12.

  Next, the contact terminal 35 will be described with reference to FIG. FIG. 3 is an external perspective view of the contact terminal 35.

  The contact terminal 35 is a so-called quick connection terminal, and includes a contact portion 36, a holding portion 37, a first terminal main body portion 38, and a second terminal main body portion 39. Each of these portions is formed by subjecting one plate-like metal (for example, copper) to bending processing, bending processing, cutting and raising processing, and the like.

  The contact portion 36 is a curved plate-like portion of the contact terminal 35, and is connected to the end portion on the Y axis + side of the second terminal main body portion 39. The contact portion 36 is disposed outside the main body portion 31 and in the vicinity of the through hole 41, and contacts the electrode 24 at the contact portion 36a. The contact part 36 functions as a leaf spring and presses the light emitting module 20 against the base part 12. In addition, if the contact part 36 is provided in the vicinity of the through-hole 41 like the holder 30, the effect that it is easy to maintain the contact of the contact part 36 and the electrode 24 is acquired. The light emitting module 20 may be pressed against the base portion 12 by one or more of the first pressing portion 45, the second pressing portion 46, and the contact portion 36.

  The holding part 37 is at least partially disposed on the hole shaft 40 inside the space 31 and holds the electric wire inserted into the insertion hole 32. The holding portion 37 is a portion having a substantially rectangular plate shape that is formed by being connected to the first terminal main body portion 38 and being cut and raised from the first terminal main body portion 38.

  Specifically, the holding part 37 guides the end part of the electric wire in the triangular chain part 37a. The chain portion 37 a is provided at an end portion (an end portion on the X axis + side) opposite to the end portion connected to the first terminal main body portion 38 of the holding portion 37, and is located on the hole shaft 40. .

  The first terminal main body portion 38 is an example of a terminal main body portion, and is formed in a rectangular frame shape by cutting and raising the holding portion 37. The first terminal main body 38 is connected to the end on the X axis + side of the second terminal main body 39 and is disposed along the inner surface of the main body 31 where the insertion hole 32 is provided.

  The second terminal main body portion 39 is disposed between the base portion 12 and the main body portion 31. The second terminal main body 39 is provided with an opening, and the convex portion of the main body 31 is inserted into the opening. Thereby, the contact terminal 35 is attached to the main body 31.

  The holder 30 (and the mounting plate 14) configured as described above is attached to the base portion 12 from above the light emitting module 20 in surface contact with the arrangement surface 13 of the base portion 12. Specifically, the holder 30 is fixed to the base portion 12 with a screw 80 penetrating the through hole 41 in a state where the contact terminal 35 (contact portion 36) is in contact with the electrode 24 of the light emitting module 20.

  At this time, the light emitting module 20 is pressed against the base portion 12 by pressing the electrode 24 of the light emitting module 20 by the contact portion 36 (contact portion 36a). Thereby, the light emitting module 20 and the base part 12 are fixed, and the light emitting module 20 and the base part 12 are mechanically and thermally connected. Further, the holder 30 (contact terminal 35) and the light emitting module 20 are electrically connected.

  In the first embodiment, the light emitting module 20 is fixed to the base portion 12 by the pair of holders (the holder 30 and the holder 130) pressing the light emitting module 20 against the base portion 12 side.

  As described above, the holder 30 can fix the light emitting module 20 to the base portion 12 in a state of being electrically connected to the light emitting module 20. Further, the holder 30 can supply the power supplied from the electric wire to the light emitting module 20 via the contact terminal 35.

[Feature structure and effects]
In the holder 30, the above-mentioned protrusion 33 is a characteristic structure. Hereinafter, such a characteristic configuration will be described with reference to FIG. FIG. 4 is an enlarged view of a region surrounded by a broken line B in FIG.

  As shown in FIG. 4A, a protruding portion that protrudes toward the inner side of the main body 31 is formed on the edge portion of the inner surface 31 a provided with the insertion hole 32 of the main body 31. 33 is provided. The inner surface 31 a is a plane orthogonal to the hole axis 40.

  Specifically, the protrusion 33 protrudes toward the inside of the main body 31 from the inner surface 31a. The protrusion 33 contacts the electric wire 90 that is inserted with an inclination with respect to the hole shaft 40 (more specifically, the core wire portion 90a that is an end portion of the electric wire 90 without an insulating coating), thereby changing the insertion angle of the electric wire 90. Has a function to regulate.

  It is desirable that the electric wire 90 be inserted into the insertion hole 32 in the direction along the hole axis 40. However, as shown in FIG. 4B, it is conceivable that the electric wire 90 is inserted with an inclination with respect to the hole axis 40. When the electric wire 90 is inserted in a state of being largely inclined with respect to the hole shaft 40 and is held by the holding portion 37, there is a problem that the electric wire 90 is easily detached from the holding portion 37 due to an external force. In other words, the insertion of the electric wire 90 with an inclination with respect to the hole shaft 40 leads to a decrease in the reliability of connection of the electric wire 90 to the contact terminal 35 (connection reliability).

  Here, by increasing the length of the insertion hole 32 in the direction of the hole axis 40 (the thickness in the direction of the hole axis 40 of the portion of the main body 31 where the insertion hole 32 is formed), Tilt can be regulated. However, when the thickness of the main body part 31 is increased toward the outside of the main body part 31, a new problem that the outer dimension of the main body part 31 is increased occurs.

  On the other hand, if the protrusion part 33 which protruded toward the inner side of the main-body part 31 is provided like the holder 30, the inclination with respect to the hole axis | shaft 40 of the electric wire 90 can be controlled, without enlarging an external dimension. . As a result, the reliability of the connection of the electric wire 90 to the contact terminal 35 can be improved. In addition, when the protrusion 33 is provided, the strength of the main body 31 with respect to an external force such as routing or rotation with respect to the electric wire 90 held by the holding portion 37 is increased toward the outside of the main body 31. It is the same as when the thickness is increased.

  In the holder 30, at least a part of the first terminal main body portion 38 of the contact terminal 35 is arranged along the inner surface 31 a, and the holding portion 37 is cut from the first terminal main body portion 38 so as to avoid the protruding portion 33. It is formed by being awakened.

  Thereby, the end surface 33a of the protrusion part 33 and the holding | maintenance part 37 can be arrange | positioned closely, and the load to the holding | maintenance part 37 at the time of the electric wire 90 being inserted from diagonally can be reduced.

  4A, the plane including the inner surface 31a provided with the insertion hole 32 of the main body 31 and the plane including the end surface 33a of the protruding portion 33 are acute angles (angles in the figure). C).

  Specifically, in (a) of FIG. 4, a portion closer to the lower side (closer to the base portion 12) of the protruding portion 33 further protrudes than a portion closer to the upper side. Thereby, the inclination with respect to the hole axis | shaft 40 of the electric wire 90 inserted from the upper direction (Z-axis + side) rather than the hole axis | shaft 40 can be controlled.

  In addition, when the electric wire 90 is often inserted into the insertion hole 32 from below (the Z-axis-side) from the hole shaft 40, the upper portion of the projecting portion 33 is changed from the lower portion. It is good to make it protrude further.

(Other embodiments)
Although the lighting device according to Embodiment 1 has been described above, the present invention is not limited to the above embodiment.

  For example, in the above embodiment, the light emitting module 20 is fixed to the base portion 12 by two holders. However, the number of holders used for fixing the light emitting module 20 to the base portion 12 is not particularly limited.

  For example, when the light emitting module 20 having a relatively small size is fixed to the base portion 12, the number of holders may be one. In this case, the electrode 24 that is not electrically connected to the holder may be supplied with power from a member different from the holder. In this case, a fixing force for stably fixing the light emitting module 20 to the base portion 12 may be obtained by the member and the holder.

  Further, for example, when the light emitting module 20 having a relatively large size or weight is fixed to the base portion 12, three or more holders may be used. For example, a holder may be arranged at each of the four corners of the rectangular light emitting module 20 in plan view. In this case, each of the at least two holders that are not electrically connected to the electrode 24 does not play a role of supplying power to the light emitting module 20, and may be used only for fixing the light emitting module 20.

  The light emitting unit 21 included in the light emitting module 20 includes one or more LED chips mounted on the main surface 22a of the substrate 22. However, the light emitting unit 21 may include a surface mount device (SMD) LED instead of the LED chip. The SMD type LED is a package type LED element in which an LED chip is mounted in a resin-molded cavity and a phosphor-containing resin is disposed in the cavity.

  Moreover, the light emitting element which the light emitting module 20 employ | adopts as a light source is not limited to LED, Light emitting elements, such as semiconductor light emitting elements, such as a semiconductor laser, organic EL (Electro Luminescence), or inorganic EL, may be employ | adopted.

  Other configurations and functions in the above-described embodiments and modifications can be arbitrarily selected without departing from the spirit of the present invention, and forms obtained by making various modifications conceived by those skilled in the art with respect to the above-described embodiments and modifications. Embodiments realized by combining these are also included in the present invention.

DESCRIPTION OF SYMBOLS 10 Illuminating device 12 Base part 13 Arrangement surface 20 Light emitting module 24 Electrode 30, 130 Holder 31 Main body part 31a Inner surface 32 Insertion hole 33 Projection part 33a End surface 35, 135 Contact terminal 36 Contact part 37 Holding part 38 First terminal main body part (terminal) Main unit)
40 hole shaft 41 through hole 80 screw 90 electric wire

Claims (9)

A holder for fixing the light emitting module arranged on the arrangement surface of the base part to the base part,
A main body provided with an insertion hole having a hole axis obliquely intersecting the arrangement surface;
A holding terminal that holds the electric wire that is disposed on the hole shaft inside the main body and is inserted into the insertion hole; and a contact terminal that has a contact portion that contacts an electrode provided in the light emitting module. ,
The edge part which forms the said insertion hole among the inner surfaces of the said main-body part is provided with the protrusion part which protruded along the direction of the said hole axis toward the inner side of the said main-body part. The holder according to claim 1, wherein a plane including an inner surface provided with the insertion hole of the main body portion and a plane including an end surface of the protruding portion form an acute angle. The contact terminal further includes a terminal main body portion at least partially arranged along the inner surface provided with the insertion hole,
The holder according to claim 2, wherein the holding portion is formed by being cut and raised from the terminal main body portion so as to avoid the protruding portion. The holder according to any one of claims 1 to 3, wherein the protruding portion regulates an insertion angle of the electric wire by contacting an electric wire inserted with an inclination with respect to the hole axis. The holder according to claim 1, wherein the contact portion is disposed outside the main body portion and presses the light emitting module against the base portion by contacting the electrode. The body portion is provided with a through hole into which a screw for fixing the body portion to the base portion is inserted.
The holder according to claim 1, wherein the contact portion is disposed outside the main body portion and in the vicinity of the through hole. The holder according to any one of claims 1 to 6, wherein an outer diameter of the main body portion of the insertion hole is larger than an inner diameter of the main body portion of the insertion hole.   As for the said protrusion part, the part by the side of the said base part protrudes rather than the part by the side of the said base part.
  The holder according to any one of claims 1 to 7. A base part;
A light emitting module disposed on an arrangement surface of the base portion;
A holder for fixing the light emitting module to the base part,
The holder is
A main body provided with an insertion hole having a hole axis obliquely intersecting the arrangement surface;
A holding terminal that is disposed on the hole shaft inside the main body and holds an electric wire inserted into the insertion hole; and a contact terminal having a contact portion that contacts an electrode provided in the light emitting module. ,
An illuminating device provided with a protruding portion that protrudes along the direction of the hole axis toward the inside of the main body portion at an edge portion that forms the insertion hole in the inner surface of the main body portion.

Images