TWI774937B - Lighting units and lighting fixtures - Google Patents

Abstract

The present invention provides a lighting unit and a lighting fixture capable of obtaining a desired sound volume even when a single-sided substrate is used as a mounting substrate, and a sounding element with leads is mounted on the surface of the mounting substrate opposite to the surface on which the light-emitting element is mounted. . The lighting unit of the present invention includes: a device body 10 (base); a mounting substrate 210 arranged on the device body 10 and is a single-sided substrate on which wiring is formed on the first surface 210a; and one or more light-emitting elements 220 mounted on the mounting substrate The first surface 210a of 210; a plurality of circuit elements 230 are mounted on the mounting substrate 210 to constitute a power supply circuit for generating electric power for causing the light-emitting elements 220 to emit light; and the sound-emitting element 240 is mounted on the second surface 210b of the mounting substrate 210; The instrument body 10 has an opposing portion 12a facing the mounting board 210 at a predetermined interval, and the mounting board 210 has a first opening 211 formed at a position opposing the opposing portion 12a.

Description

Lighting units and lighting fixtures

The present invention relates to a lighting unit including a light-emitting element such as an LED (Light Emitting Diode) element, and a lighting fixture including the lighting unit.

As a lighting fixture having an LED element, a ceiling lamp installed on a ceiling is known. A ceiling lamp having LED elements, for example, includes: an appliance body; a mounting substrate fixed to the appliance body; LED elements mounted on the mounting substrate; a plurality of circuit elements constituting a power supply circuit for generating electric power for lighting the LED elements; and Light-transmitting cover, covering the LED components.

Conventionally, as such a luminaire, a ceiling lamp provided with a sound-emitting element is known, for example, to notify the user by sound that a signal from the remote control has been received, or to notify the user by sound that the user has arrived at a location. At the set wake-up time, an electronic sound such as a buzzer sound is emitted (for example, Patent Document 1). [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2015-207380

[Problems to be Solved by Invention]

In lighting fixtures such as ceiling lamps, we evaluate that a plurality of circuit elements and light-emitting elements constituting a power supply circuit are mounted on the same mounting substrate.

When mounting a sounding element (buzzer, etc.) on a mounting board on which circuit elements and light-emitting elements are mounted, by using a double-sided board on which wiring is formed on both sides as a mounting board, the element body of the sounding element can be placed on the light-emitting element. In the method on the mounting surface side of the element, the sound emitting element is mounted on the mounting board. Thereby, since the sound-emitting element can be mounted in the same direction as the light emitting side of the light-emitting element, the sound-emitting element can be directed toward the floor surface. Thereby, it becomes easy to satisfy the desired volume standard (for example, 45 dB or more) as a lighting fixture.

However, when a single-sided substrate in which wiring is formed only on one side is used as a mounting substrate, wiring is required on the surface on which the light-emitting element is mounted. In this case, if a lead type component (lead component) having a lead wire inserted into a through-hole of the mounting substrate is used as the sound-emitting element, the lead-attached sound-emitting component must be mounted on the mounting substrate and the mounting surface of the light-emitting element. opposite side. That is, the sound-emitting element is mounted on the ceiling-side surface of the mounting board. As a result, there is a possibility that the desired volume cannot be secured and the standard of the desired volume as a lighting fixture cannot be satisfied.

Therefore, although it has been considered to replace the non-leaded sounding element with a surface-mounted sounding element and mount it on the same surface as the light-emitting element, the cost of the surface-mounted sounding element is 2-3 higher than that of the leaded sounding element. times.

The present invention is made to solve such a problem, and an object of the present invention is to provide a lighting unit and a lighting fixture, which even use a single-sided substrate as a mounting substrate, and mount a sound-emitting element with leads on the mounting substrate and mount a light-emitting element on the mounting substrate. Even if the surface of the element is the surface on the opposite side, the desired volume can be obtained. [How to solve the problem]

In order to achieve the above-mentioned object, an aspect of the lighting unit of the present invention includes: a base; a mounting board arranged on the base, and a single-sided board on which wiring is formed on a first surface; and one or more light-emitting elements on which to mount on the first surface of the mounting board; a plurality of circuit elements mounted on the mounting board and constituting a power supply circuit for generating electric power for causing the light-emitting element to emit light; and a sound-emitting element mounted on the first surface of the mounting board A second surface facing away; the base has an opposing portion facing the mounting substrate with a predetermined interval therebetween, and the mounting substrate has an opening formed at a position facing the opposing portion.

Another aspect of the lighting fixture of the present invention includes: the lighting unit described above; and a light-transmitting cover that covers the lighting unit. [Inventive effect]

According to the present invention, a desired sound volume can be obtained even when the leaded sound emitting element is mounted on the surface of the mounting substrate of the single-sided substrate that is opposite to the surface on which the light-emitting element is mounted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are all specific examples showing the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements 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, the constituent elements not described in the independent claims representing the highest-level concept are explained as arbitrary constituent elements.

In addition, each figure is a schematic diagram, and it is not necessarily a strict illustration. In each figure, the same reference numerals are attached to substantially the same configuration, and the description thereof will be omitted or abbreviated.

In this specification and the drawings, the X-axis, Y-axis, and Z-axis systems represent three axes of a three-dimensional vertical coordinate system. In this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis is (The direction parallel to the XY plane) is set as the horizontal direction. The X axis and the Y axis are perpendicular to each other, and both are axes perpendicular to the Z axis. In addition, let the positive direction of the Z-axis direction be vertically downward.

(Embodiment) The overall configuration of the lighting fixture 1 according to the embodiment will be described with reference to FIGS. 1 and 2 . FIG. 1 is a cross-sectional view of the lighting fixture 1 according to the embodiment. FIG. 2 is an exploded perspective view of the same lighting fixture 1 . In addition, in FIG. 1 and FIG. 2, the upper part of the paper surface corresponds to the direction of the floor surface (not shown). That is, in FIGS. 1 and 2 , the lighting fixture 1 is displayed in an upside-down posture from that in general use. In addition, in FIG. 2, the screw which fixes a member mutually is abbreviate|omitted.

The lighting fixture 1 is installed in construction materials of buildings such as houses. The lighting fixture 1 of the present embodiment is a ceiling lamp installed on the ceiling. Specifically, the lighting fixture 1 is installed on the ceiling by being attached to the main body of the suspended ceiling lamp socket installed on the ceiling. The main body of the suspended ceiling lamp socket is electrically connected to a commercial power supply via a wire or the like on the inner side of the ceiling. The lighting fixture 1 can obtain electric power from a commercial power source by being attached to the main body of the suspended ceiling socket.

As shown in FIGS. 1 and 2 , the lighting fixture 1 includes: a fixture body 10 ; a light source module 20 ; a circuit cover 30 ; a light source cover 40 ; Furthermore, as shown in FIG. 2 , the fixture body 10 and the light source module 20 constitute the lighting unit 2 using the fixture body 10 as a base.

Hereinafter, each constituent element of the lighting fixture 1 of the present embodiment will be described in detail with reference to FIGS. 1 and 2 .

[appliance body (base)] As shown in FIG. 1 and FIG. 2 , the apparatus body 10 is a base supporting the light source module 20 , the light transmission cover 50 , the circuit cover 30 and the light source cover 40 . In the present embodiment, the fixture body 10 constitutes a peripheral member of the lighting fixture 1 .

The appliance body 10 is made of sheet metal, and is formed into a predetermined shape by pressing sheet metal such as an aluminum plate or a steel plate. The surface of the device body 10 on the side where the light source module 20 is arranged, that is, the first surface 10 a, is the inner surface of the device body 10 . In order to improve the reflectivity of the first surface 10a to improve the light extraction efficiency, the first surface 10a can also be coated with a white paint or a reflective metal material. In addition, the second surface 10b, which is the surface on the opposite side to the first surface 10a, is the outer surface of the device body 10 and is exposed to the outside air. That is, the second surface 10b can be used as a heat dissipation surface.

The appliance body 10 has a protruding portion 11 partially protruding toward the floor surface side. The protruding portion 11 is a supporting portion for supporting the light source module 20 . Specifically, the protruding portion 11 supports the mounting substrate 210 of the light source module 20 , and the first surface 10 a of the protruding portion 11 serves as a substrate arrangement surface on which the mounting substrate 210 is arranged.

The protruding portion 11 is formed into a substantially trapezoidal cross-sectional shape by press working. In addition, the plan view shape of the protruding portion 11 is an annular shape having a certain width as a substrate arrangement surface.

Further, by forming the protruding portion 11 in the device body 10 , the recessed portion 12 is formed around the opening portion 13 formed in the central portion of the device body 10 . Specifically, the recessed portion 12 is formed in an annular shape so as to surround the opening portion 13 . The bottom of the concave portion 12 is the opposite portion 12 a facing the mounting substrate 210 of the light source module 20 . The opposing portion 12a is formed to be spaced apart from the mounting board 210 by a predetermined distance. In this way, the device main body 10 has the opposing portion 12 a facing the mounting substrate 210 with a predetermined interval therebetween. Thereby, a space area is formed between the mounting substrate 210 and the opposing portion 12a (the bottom of the recessed portion 12).

A cylindrical member 60 having a cylindrical cylindrical portion is provided in the opening portion 13 of the instrument body 10 . Moreover, inside the cylindrical member 60, the support member 70 is provided. The support member 70 is used as an adapter guide for attaching the appliance body 10 to an adapter (not shown), and has a structure that can be fitted with the adapter. The support member 70 and the adapter are freely detachable. The adapter is electrically and mechanically connected with the main body of the suspended ceiling lamp holder. Specifically, in order to be hooked to the hole of the main body of the hanging ceiling lamp socket, the adapter is provided with an L-shaped fitting.

When installing the lighting fixture 1 on the ceiling, the user installs the adapter on the main body of the suspended ceiling lamp socket. After that, the appliance body 10 is pressed to the ceiling side so that the support member 70 provided in the opening portion 13 of the appliance body 10 is attached to the adapter. In this way, the support member 70 is locked with the adapter, so that the lighting fixture 1 is fixed to the ceiling, and the main body of the suspended ceiling lamp socket and the lighting fixture 1 are electrically and mechanically connected.

Moreover, the apparatus main body 10 is provided with a plurality of screw holes. The screw is screwed into the screw hole. The light source module 20 , the circuit cover 30 and the light source cover 40 are mounted on the apparatus body 10 by being locked together with the screw.

[Light source module] The light source module 20 is a light source of the lighting fixture 1, and emits white light, for example. As shown in FIG. 1 , the light source module 20 is supported by the appliance body 10 . Specifically, the light source module 20 is placed on the protruding portion 11 of the device body 10 .

Here, the detailed structure of the light source module 20 will be described with reference to FIGS. 1 and 2 , and FIGS. 3A , 3B, 4 and 5 . FIG. 3A is a perspective view of the light source module 20 of the embodiment seen from the ceiling side. FIG. 3B is a perspective view of the same light source module 20 of the embodiment seen from the floor side. FIG. 4 is a top view of the same light source module 20 . FIG. 5 is a half cross-sectional view of the lighting fixture 1 according to the embodiment.

As shown in FIGS. 3A , 3B and 4 , the light source module 20 includes: a mounting substrate 210 ; one or more light-emitting elements 220 ; a plurality of circuit elements 230 ; In this embodiment, the light-emitting element 220 is a complex number.

The light source module 20 is a power-integrated light-emitting module, and the light-emitting element 220 and the circuit element 230 are both mounted on the mounting substrate 210 . In this embodiment, the sound-emitting element 240 is also mounted on the mounting board 210 . That is, the mounting board 210 is a common board shared by the light-emitting element 220 , the circuit element 230 , and the sound-emitting element 240 , and the light-emitting element 220 , the circuit element 230 , and the sound-emitting element 240 are mounted on the same mounting board 210 .

The mounting board 210 is a printed wiring board, and the printed wiring board is composed of a resin substrate made of an insulating resin material, a metal base substrate made of a metal material whose surface is coated with a resin film, and a ceramic as a sintered body of a ceramic material. A substrate, a glass substrate made of a glass material, or the like is used as a base material, and wirings are formed on the surface of the mounting substrate 210 . The wiring is, for example, a metal wiring formed of a metal thin film such as copper or silver. In addition, the surface of the mounting substrate 210 may be covered with an insulating film such as a white photoresist film so as to cover the metal wiring except for the land portion (soldering portion). In addition, the mounting substrate 210 is not limited to a rigid substrate, and may be a flexible substrate.

The mounting substrate 210 is a single-sided substrate in which wiring is formed only on one surface. Specifically, the mounting board 210 has a first surface 210a and a second surface 210b facing away from the first surface 210a. In the mounting board 210 of the present embodiment, metal wirings are formed on the first surface 210a in a predetermined shape pattern. Single-sided substrate. Therefore, the first surface 210a of the mounting board 210 becomes a soldering surface.

The plurality of light-emitting elements 220 and the plurality of circuit elements 230 mounted on the mounting substrate 210 are electrically connected by metal wirings formed on the mounting substrate 210 . In addition, the plurality of light-emitting elements 220 and the plurality of circuit elements 230 are also electrically connected by metal wiring. In addition, although the mounting substrate 210 is a single-sided substrate rather than a double-sided substrate, a conductive member having a wiring function may be additionally formed on the mounting substrate 210 serving as a single-sided substrate as required.

As shown in FIGS. 3A , 3B and 4 , the mounting substrate 210 includes a light emitting area EA, which is an area where the light emitting element 220 is mounted, and a circuit area CA, where the circuit element 230 is mounted. In this embodiment, the light emitting area EA is the outer peripheral area of the mounting substrate 210 , and the circuit area CA is the inner peripheral area of the mounting substrate 210 . That is, the light emitting area EA is an annular area located outside the circuit area CA. On the contrary, the circuit area CA is an annular area located inside the light emitting area EA.

Moreover, as shown in FIGS. 1 and 5 , the mounting board 210 is arranged on the instrument body 10 . Specifically, the mounting board 210 is arranged on the protruding portion 11 of the instrument body 10 in a state where the second surface 210 b is in contact with the instrument body 10 . That is, the mounting board 210 is arranged on the apparatus main body 10 in a state in which the second surface 210b is on the ceiling side and the first surface 210a is on the floor side.

Further, the mounting board 210 is placed on the protruding portion 11 of the appliance body 10 in a state where a part of the mounting substrate 210 protrudes from the protruding portion 11 of the appliance body 10 toward the opening portion 13 . Therefore, a part of the mounting board 210 faces the recessed portion 12 of the instrument body 10 . Specifically, the portion protruding from the protruding portion 11 of the mounting board 210 faces the bottom portion (the opposing portion 12 a ) of the recessed portion 12 of the instrument body 10 . In the present embodiment, the portion of the circuit area CA in the mounting substrate 210 overflows from the protruding portion 11 . Therefore, the portion of the circuit area CA of the mounting board 210 faces the bottom portion (opposing portion 12 a ) of the recessed portion 12 of the device body 10 .

The mounting board 210 has a first opening 211 and a second opening 212 . Both the first opening portion 211 and the second opening portion 212 are through holes penetrating through the mounting substrate 210 .

As shown in FIG. 5 , the first opening portion 211 is formed at a position facing the opposing portion 12 a of the instrument body 10 . That is, the first opening portion 211 faces the recessed portion 12 of the instrument body 10 . The first opening portion 211 is also in an opening state in a state where the light source module 20 (the mounting substrate 210 ) is arranged on the device body 10 . That is, in the state where the light source module 20 is disposed on the device body 10, no member is inserted into the first opening 211, and the air on the side of the first surface 210a and the air on the side of the second surface 210b can pass through the first opening Section 211 is the status of correspondence. As shown in FIGS. 3A , 3B and 4 , the first opening portion 211 exists in the circuit area CA of the mounting board 210 . That is, the first opening portion 211 is not formed in the light emitting area EA, but is formed in the circuit area CA.

Moreover, the mounting board 210 is also formed with screw holes as through holes other than the first opening 211 and the second opening 212, but the first opening 211 is different from the screw holes. Specifically, the opening area of the first opening portion 211 is larger than the opening area of the screw hole formed in the mounting board 210 . The opening area of the first opening portion 211 is preferably, for example, about 20 mm ² or more, preferably about 100 mm ² or more, and more preferably about 200 mm ² or more.

The plan view shape of the first opening portion 211 is not particularly limited, and may be a rectangle, a circle, or the like. For example, when the planar shape of the first opening 211 is a rectangle, the size of the first opening 211 is, for example, 15 mm in width×20 mm in length. In addition, when the planar shape of the first opening portion 211 is circular, the size of the first opening portion 211 is preferably φ5 mm or more.

As shown in FIGS. 3A , 3B and 4 , the second opening portion 212 is formed in the center portion of the mounting board 210 . Therefore, the plan view shape of the mounting substrate 210 is annular. In the present embodiment, the plan view shape of the second opening portion 212 is circular. As shown in FIG. 1 , the center of the second opening 212 of the mounting board 210 is aligned with the center of the circular opening 13 of the instrument body 10 . Therefore, the mounting board 210 is arranged on the device body 10 so as to surround the opening portion 13 of the device body 10 .

The plurality of light-emitting elements 220 are mounted on the first surface 210 a of the mounting substrate 210 . That is, the light-emitting element 220 is mounted on the first surface 210a on which the wiring is formed. In this embodiment, the plurality of light-emitting elements 220 are arranged in a ring shape in two rows in the light-emitting area EA so as to surround the second opening 212 .

Each light-emitting element 220 is, for example, an individually packaged surface mount device (SMD: Surface Mount Device) type LED element, and includes: a white resin package (container) having a concave portion; an LED chip mounted on the bottom surface of the concave portion of the package at one time; and The sealing member is enclosed in the concave portion of the package. The sealing member is made of a translucent resin material such as silicone resin. The sealing member may be a phosphor-containing resin containing a wavelength conversion material such as a phosphor.

An LED chip is an example of a semiconductor light-emitting element that emits light using a predetermined DC power, and is a bare chip that emits monochromatic visible light. The LED chip is, for example, a blue LED chip that emits blue light when energized. In this case, in order to obtain white light, the sealing member contains a yellow phosphor such as YAG (yttrium-aluminum-garnet) that emits fluorescently by using blue light from the blue LED wafer as excitation light.

In this way, the light-emitting element 220 of the present embodiment is a B-Y type white LED light source composed of a blue LED chip and a yellow phosphor. Specifically, the yellow phosphor absorbs part of the blue light emitted by the blue LED chip, is excited and emits yellow light, and the yellow light is mixed with the blue light not absorbed by the yellow phosphor to become white light. In addition, the sealing member may contain a red phosphor or a green phosphor in addition to the yellow phosphor.

In addition, the light source module 20 may be a monochromatic type in which the light colors of all the light-emitting elements 220 are the same, or may be a toning type in which the illumination light of the lighting fixture 1 can be toned. In the case of the light source module 20 of the color tone type, the plurality of light emitting elements 220 include a plurality of light emitting elements 220 having different emission colors such as color temperature. In this case, for example, the plurality of light-emitting elements 220 may be composed of a first light-emitting element that emits light with a high color temperature (eg, daytime color) and a second light-emitting element that emits light with a low color temperature (eg, bulb color). In addition, the connection form of the plural light-emitting elements 220 (series connection, parallel connection, and combination of series connection and parallel connection, etc.) are not particularly limited.

The plurality of circuit elements 230 include at least a power supply circuit element that constitutes a power supply circuit for generating electric power for causing the light-emitting element 220 to emit light. The plurality of circuit elements 230 constituting the power supply circuit, for example, convert AC power supplied via lead wires connected to the adapter attached to the support member 70 of the appliance body 10 into DC power. The DC power generated by the power supply circuit is supplied to each light-emitting element 220 . Thereby, each light-emitting element 220 emits light.

The plurality of circuit elements 230 (circuit elements for power supply) constituting the power supply circuit are, for example, capacitive elements such as electrolytic capacitors and ceramic capacitors, resistive elements such as resistors, rectifier circuit elements, choke coils, choke transformers, noise filters, two Polar bodies, switching elements such as MOSFETs, semiconductor elements such as integrated circuit elements, etc.

In addition, the plurality of circuit elements 230 may include not only circuit elements for power supply, but also circuit elements constituting other circuits. For example, the plurality of circuit elements 230 may include a sensor circuit element constituting a control circuit for controlling the light-emitting state of the light-emitting element 220 by a signal from the human body sensor when the lighting fixture 1 has a sensor such as a human body sensor ; may also include: constitute a control circuit element such as a dimming circuit or a color-adjusting circuit for dimming or toning the illumination light of the light source module 20; may also include: constitute an infrared ray with a remote control or a mobile terminal Other circuit components such as communication circuit components (communication modules) of communication circuits of communication or wireless communication.

The plurality of circuit elements 230 include a first circuit element 231 and a second circuit element 232 having different mounting patterns on the mounting substrate 210 .

The first circuit element 231 is a surface mount type circuit module (SMD: Surface Mount Device), and is mounted on the surface of the mounting board 210 by soldering. In the present embodiment, the first circuit element 231 is mounted on the first surface 210a on which the wiring of the mounting substrate 210 is formed.

The second circuit element 232 is a lead type circuit component (lead component) having an element body and a pair of leads drawn from the element body. Therefore, the second circuit element 232 is mounted by inserting the leads into the through holes formed in the mounting substrate 210 (through-hole mounting). The mounting board 210 of the present embodiment is a single-sided board in which wirings are formed on the first surface 210 a, so the second circuit element 232 is mounted on the second surface 210 b of the mounting board 210 . For example, the second circuit element 232 is connected to the first surface 210a by inserting the lead from the second surface 210b to a through hole formed at a position overlapping the wiring of the mounting board 210, and soldering the tip of the lead to the first surface 210a side. Wiring connection on the first surface 210a. That is, the element body of the second circuit element 232 is located on the side of the second surface 210b, and the leading ends of the leads inserted through the through holes of the mounting substrate 210 are soldered to the first surface 210a. In addition, the second circuit element 232 as a lead set is a radial lead set or an axial lead set.

In addition, the plurality of circuit elements 230 include large circuit elements having a projected area of 100 mm ² or more with respect to the mounting substrate 210 in a plan view. The large circuit element is the second circuit element 232 as the lead assembly. Therefore, the large circuit element is mounted on the second surface 210 b of the mounting board 210 . Such a large circuit element includes, for example, a coil assembly having a coil such as a choke transformer or a choke coil, an electrolytic capacitor, and the like.

On the second surface 210b of the mounting board 210, a sounding element 240 that emits electronic sounds is mounted. The sounding element 240 emits a notification sound when the user knows that the lighting fixture 1 is operated by a remote control or the like, or when the user knows that the set wake-up time has come. For example, when the user operates the remote controller to turn on and off the lighting fixture 1, control the dimming, or perform various settings, the lighting fixture 1 receives an infrared signal or a wireless signal by operating the user's remote controller. When the signal is received, the sound-emitting element 240 emits a sound. Moreover, when the set wake-up time is reached, the sound-emitting element 240 emits a sound. The sounding element 240 is, for example, an electronic buzzer that emits a beep sound such as "beep beep".

Like the second circuit element 232, the sounding element 240 is a lead-type sounding element having an element body and a pair of lead wires. In this embodiment, the sound generating element is a radial lead assembly.

The sound-emitting element 240 can be attached to the vicinity of the first opening 211 . In this case, the distance between the sounding element 240 and the first opening 211 is preferably within 30 mm, more preferably within 10 mm, and even more preferably within 5 mm. In addition, if the sound volume emitted from the sound generating element 240 to the outside of the lighting fixture 1 exceeds a predetermined standard, the distance between the sound generating element 240 and the first opening 211 may exceed 30 mm.

In the present embodiment, the sound-emitting element 240 exists in the circuit area CA of the mounting board 210 . That is, the sound-emitting element 240 is mounted on the circuit area CA on the second surface 210 b of the mounting board 210 . In this case, it is preferable not to mount large circuit elements around the sound generating element 240 . That is, the sound generating element 240 is preferably formed in a sparse area where the number of the large circuit elements 230 to be mounted is small.

In addition, the electrical connector 250 is mounted on the first surface 210a of the mounting board 210 . The electrical connector 250 is an external connection terminal. In the electrical connector 250 , a lead wire connected to an adapter is inserted, and the adapter is attached to the support member 70 of the appliance body 10 . That is, the electrical connector 250 can receive AC power (eg, commercial AC 100V) supplied through the lead wires. The AC power received by the electrical connector 250 is converted into DC power by a power supply circuit formed by a plurality of circuit elements 230 . The electrical connector 250 is, for example, a quick-connect terminal, which is electrically and mechanically connected to the lead by inserting the lead. In the present embodiment, the electrical connector 250 is a horizontal plug-in electrical connector having insertion holes extending parallel to the first surface 210 a of the mounting substrate 210 . Therefore, when connecting the electrical connector 250 to the lead wire, the lead wire is inserted into the electrical connector 250 from the front side.

The light source module 20 thus constructed is fixed to the device body 10 with screws. Specifically, the light source module 20 is placed on the protruding portion 11 of the device body 10 , the circuit cover 30 is inserted into the screw holes respectively provided on the light source cover 40 and the mounting substrate 210 by inserting screws, and the screws are locked into the device The screw hole of the main body 10 is fixed to the apparatus main body 10 .

[circuit cover] As shown in FIGS. 1 and 2 , the circuit cover 30 is a cover member covering a plurality of circuit elements 230 . Specifically, the circuit cover 30 covers the circuit elements mounted on the first surface 210 a of the mounting board 210 among the plurality of circuit elements 230 . That is, the circuit cover 30 covers the first circuit element 231 mounted on the first surface 210 a of the mounting board 210 . Therefore, the circuit cover 30 covers a part of the first surface 210a (the surface on the floor surface side) of the mounting board 210 . Specifically, the circuit cover 30 covers only the circuit area CA in the light emitting area EA and the circuit area CA on the first surface 210 a of the mounting substrate 210 .

The circuit cover 30 is, for example, opaque white, which reflects the light emitted from the light-emitting element and hits the circuit cover 30 and guides it to the direction of the light-transmitting cover 50 , but it can also be light-transmitting. cover. In addition, in this embodiment, although the circuit cover 30 is a metal cover, it may be a resin cover. In addition, the circuit cover 30 may be formed of a non-flammable material such as a metal material or a non-flammable resin material.

The circuit cover 30 is shaped to surround the opening 13 of the appliance body 10 . In the present embodiment, the circuit cover 30 is formed in an annular shape in plan view. Moreover, as shown in FIG. 1, the circuit cover 30 is comprised so that a space area may be formed by the circuit cover 30, the cylindrical member 60, and the mounting board|substrate 210. As shown in FIG. In this space area, the first circuit element 231 of the circuit element 230 is arranged. In addition, the outer end portion of the circuit cover 30 is supported by the first surface 210 a of the mounting board 210 .

As shown in FIG. 2 , in the circuit cover 30, a notch portion 30a is formed. The cutout portion 30 a is covered by the resin cover 31 . The resin cover 31 covers the remote control receiver, night light, etc. mounted on the mounting board 210 . The remote control receiving unit receives infrared signals or wireless signals from a remote control operated by a user. When the resin cover 31 covers the night light, an opening may be formed in the resin cover 31 so that the light of the night light passes through the resin cover 31 , or the resin cover 31 may be made of a translucent resin material. In the present embodiment, since an opening is formed in the resin cover 31 , the resin cover 31 is covered by the protruding portion of the light source cover 40 .

The circuit cover 30 thus constructed is attached to the device body 10 together with the light source module 20 and the light source cover 40 by screws. In this embodiment, the circuit cover 30 , the light source cover 40 , the light source module 20 and the appliance body 10 are arranged in the order and locked together by four screws.

[Light source cover] As shown in FIG. 1 , the light source cover 40 is a cover member that covers the light emitting elements 220 arranged on the mounting board 210 . In this embodiment, the light source cover 40 covers the light emitting area EA of the mounting substrate 210 .

The light source cover 40 is a light-transmitting cover that transmits light emitted from the light-emitting element 220 . That is, the light emitted from the light emitting element 220 is incident on the light source cover 40 and penetrates the light source cover 40 . By disposing the light source cover 40 , the light-emitting element 220 can be protected or the charging portion of the mounting substrate 210 can be prevented from being touched by the user.

In the present embodiment, the light source cover 40 has a light distribution control function for controlling the light distribution of the light emitted from the light emitting element 220 . Specifically, as shown in FIGS. 1 and 2 , the light source cover 40 has lens portions 41 respectively corresponding to the plurality of light-emitting elements 220 , and the plurality of lens portions 41 each have a light distribution of light emitted from the corresponding light-emitting elements 220 . The function of magnifying the angle. The lens portion 41 and the plurality of light emitting elements 220 are formed in a one-to-one manner. The lens portion 41 is formed on the entire light source cover 40 corresponding to the arrangement of the plurality of light emitting elements 220 . The plan view shape of the light source cover 40 is annular. In this way, the light source cover 40 is a lens cover having a lens function.

The light source cover 40 can be formed using a translucent resin material. For example, the material of the light source cover 40 is acrylic, polycarbonate, polyethylene terephthalate, or the like. In addition, the light source cover 40 in this embodiment is transparent and does not have light diffusivity, but the light source cover 40 may also have light diffusivity.

The light source cover 40 is shaped to surround the opening 13 of the instrument body 10 . The light source cover 40 is formed in a ring shape so as to cover the plurality of light emitting elements 220 arranged in a ring shape. In this embodiment, the plan view shape of the light source cover 40 is formed in an annular shape.

The light source cover 40 is configured to surround the circuit cover 30 . That is, the circuit cover 30 is disposed at the opening of the light source cover 40 , and the outer diameter of the light source cover 40 is larger than the outer diameter of the circuit cover 30 .

In addition, a part of the light source cover 40 is provided with a flat plate-like protrusion 42 that protrudes inward. The protruding portion 42 covers the resin cover 31 that plugs the cutout portion 30 a of the circuit cover 30 . That is, the protruding portion 42 overlaps with the resin cover 31 .

The light source cover 40 thus constituted is fixed to the device body 10 by four screws penetrating the circuit cover 30 as described above. In addition, the inner end of the light source cover 40 is supported by the first surface 210 a of the mounting board 210 .

[Transparent cover] The light-transmitting cover 50 is a cover member that covers the lighting unit 2 . That is, the light-transmitting cover 50 covers the device body 10 and the light source module 20 that constitute the lighting unit 2 . In this embodiment, the transparent cover 50 also covers the circuit cover 30 and the light source cover 40 covering the light source module 20 .

In addition, the light-transmitting cover 50 is an outer cover that constitutes an outer member of the lighting fixture 1 . The light-transmitting cover 50 is a lampshade covering the whole of the appliance body 10 . The light-transmitting cover 50 is detachably mounted on the appliance body 10 .

The light-transmitting cover 50 is a light-transmitting member having light-transmitting properties, so that the light emitted from the light source module 20 and passing through the light source cover 40 is transmitted therethrough. That is, the light incident on the inner surface of the light-transmitting cover 50 penetrates the light-transmitting cover 50 and is led out to the outside of the light-transmitting cover 50 .

The translucent cover 50 can be formed using a translucent resin material. For example, the material of the transparent cover 50 may be acrylic (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), or polyvinyl chloride.

In addition, the light-transmitting cover 50 has light diffusivity. By providing the light-transmitting cover 50 with light diffusivity, the light incident from the light source cover 40 to the light-transmitting cover 50 can be diffused (scattered), so that the light can be uniformly led out from the entire light-transmitting cover 50 to the outside.

In this case, for example, the light-transmitting cover 50 can have light diffusivity by making the light-transmitting cover 50 milky white. Specifically, by constituting the light-transmitting cover 50 with a resin material in which light-diffusing particles are dispersed, the light-transmitting cover 50 can have light diffusing properties. In addition, the light-transmitting cover 50 may have light diffusivity by forming a milky white light-diffusing film on the inner surface or the outer surface of the light-transmitting cover 50 . Alternatively, the surface of the transparent light-transmitting cover 50 may have light diffusing properties by forming plural light diffusing points or plural minute irregularities (textures). Moreover, the light-diffusing property may be provided by further forming a plurality of light-diffusing points or a plurality of minute irregularities on the opalescent light-transmitting cover 50 .

In addition, the shape of the light-transmitting cover 50 follows the shape of the instrument body 10, and in this embodiment, it is a circular dome shape. In addition, when the instrument body 10 is square, the shape of the light-transmitting cover 50 may also be a rectangular dome shape.

[Effect, etc.] Next, the effect of the lighting fixture 1 in the present embodiment will be described with reference to FIG. 5 in comparison with the lighting fixture 1X of the comparative example shown in FIG. 6 . FIG. 6 is a half cross-sectional view of the lighting fixture 1X of the comparative example.

As shown in FIG. 6 , in the lighting fixture 1X of the comparative example, as the mounting board 210X of the light source module 20X, a double-sided board for forming wiring on both sides is used. Therefore, the circuit element 230 can be arbitrarily mounted on any one of the first surface 210a and the second surface 210b of the mounting board 210X regardless of whether it is a surface mount type or a lead assembly.

For example, most of the circuit elements 230 may be mounted on the mounting board 210X so that the element body of the circuit element 230 is located on the same surface side as the first surface 210a of the light-emitting element 220, that is, the mounting surface. In this case, the surface mount type first circuit element 231 is mounted on the mounting board 210X by being soldered to the first surface 210a of the mounting board 210X. Moreover, the 2nd circuit element 232 which is a lead assembly is mounted on the mounting board 210X by soldering the lead wire inserted from the 1st surface 210a to the 2nd surface 210b to the 2nd surface 210b.

In addition, in the lighting fixture 1X of the comparative example, since a double-sided substrate is used as the mounting substrate 210X, even if the lead-type sounding element 240 is used, the element body of the sounding element 240 can be positioned on the mounting surface of the light-emitting element 220, that is, The first surface 210a is mounted on the mounting board 210X so as to be on the same surface side. Specifically, the sound generating element 240 can be mounted on the mounting board 210X by soldering the lead wire inserted from the first surface 210a to the second surface 210b to the second surface 210b.

In this way, in the lighting fixture 1X of the comparative example, since the sound emitting element 240 can be mounted in the same direction as the light emitting side of the light emitting element 220, the sound emitting element 240 and the light emitting element 220 can be directed toward the floor surface. Thereby, when the sound generating element 240 emits sound, it can easily satisfy the desired volume standard (for example, 45 dB or more) as the lighting fixture 1X.

However, when a single-sided substrate is used as the mounting substrate 210 as in the lighting fixture 1 of the present embodiment, wiring is required on the surface on which the light-emitting element 220 is mounted. 240 is mounted on the surface opposite to the mounting surface of the light-emitting element 220 . That is, the sound-emitting element 240 is mounted on the ceiling-side surface of the mounting board 210 . As a result, there is a fear that the desired volume for the sound emitting element 240 cannot be secured, and the desired volume reference as a lighting fixture cannot be satisfied.

Therefore, in the lighting fixture 1 and the lighting unit 2 of the present embodiment, as shown in FIG. 5 , the fixture body 10 has the facing portion 12a facing the mounting board 210 at a predetermined interval, and the mounting board 210 has the first opening portion 211 , the first opening portion 211 is formed at a position facing the opposing portion 12 a of the instrument body 10 .

With this configuration, even if a single-sided substrate is used as the mounting substrate 210, the leaded sound emitting element 240 is mounted on the second surface 210b opposite to the first surface 210a of the light-emitting element 220 on which the mounting substrate 210 is mounted, from The sound generated by the sounding element 240 is reflected on the opposing portion 12a and the like, passes through the first opening portion 211, and travels from the second surface 210b side to the first surface 210a side. That is, the sound generated by the sound generating element 240 moves from the ceiling surface side of the mounting board 210 to the floor surface side. Thereby, the desired volume can be ensured when the sound generating element 240 emits sound, so that the desired volume standard as the lighting fixture 1 can be satisfied. Therefore, a high-quality lighting fixture 1 in which the sound volume of the sound emitting element 240 is improved can be realized.

In particular, in this embodiment, on the side of the second surface 210b of a part of the mounting board 210 where the first opening 211 is formed, a space area surrounded by the recess 12 of the device body 10 and the mounting board 210 is formed . Thereby, the sound generated by the sound generating element 240 can easily move to the first surface 210a side (the floor surface side) through the first opening 211 . Therefore, a high-quality lighting fixture 1 in which the sound volume of the sound emitting element 240 is improved can be easily realized.

Furthermore, the lead-attached sound emitting element 240 is lower in cost than the surface mount type sound emitting element, so that the cost increase of the lighting fixture 1 can be suppressed.

Moreover, in the lighting fixture 1 and the lighting unit 2 of this embodiment, the sound-emitting element 240 is attached to the vicinity of the 1st opening part 211.

With this configuration, the sound generated by the sound generating element 240 can easily pass through the first opening 211, and thus it is easier to satisfy the desired volume standard.

In addition, in the lighting fixture 1 and the lighting unit 2 of the present embodiment, the large circuit element 230 is not mounted on the periphery of the sound generating element 240 .

With this configuration, the sound generated by the sound generating element 240 can be suppressed from being blocked by the large circuit element 230 . In this way, the sound generated by the sound generating element 240 can easily pass through the first opening 211, so that it is easier to satisfy the desired volume standard.

Moreover, in the lighting fixture 1 and the lighting unit 2 of this embodiment, the horizontal insertion type electrical connector 250 arrange|positioned in the vicinity of this opening part is further provided.

With this configuration, even in the horizontal plug-in electrical connector 250 , the lead wires can be easily inserted into the electrical connector 250 . For example, when the operator inserts the lead wire into the electrical connector 250, since a part of the user's finger (joint part, etc.) holding the lead wire can be inserted into the first opening 211, it is possible to prevent, for example, the finger touching the installation. When the surface of the substrate 210 obstructs the mounting substrate 210 and it is difficult to insert the lead wire into the electrical connector 250 , the lead wire can be easily inserted into the electrical connector 250 . Therefore, the opening area of the first opening portion 211 is preferably a size in which a part of a human finger (joint portion, etc.) can be inserted into the left and right sides.

Moreover, the lighting fixture 1 of this embodiment is further provided with the circuit cover 30 which covers the circuit element 230 mounted on the 1st surface 210a of the mounting board 210 among the circuit elements 230 of the plurality.

In the present embodiment, as shown in FIG. 5 , among the plurality of circuit elements 230 , the surface mount type first circuit elements 231 are mounted on the first surface 210 a of the mounting board 210 , and the circuit elements 231 of the surface mount type are mounted on the second surface 210 b of the mounting board 210 . The second circuit element 232 of the lead. That is, the circuit element 230 with a lower height is mounted on the first surface 210a on which the circuit cover 30 is arranged, and the circuit element 230 with a higher height is mounted on the second surface 210b. As a result, as shown in FIG. 5 , the circuit cover 30 of the lighting fixture 1 of the present embodiment can be reduced in height compared to the circuit cover 30X of the lighting fixture 1X of the comparative example shown in FIG. 6 . Thereby, in the lighting fixture 1 of this embodiment, the light of the light emitting element 220 can be suppressed from being blocked by the circuit cover 30 .

Moreover, in the lighting fixture 1 of this embodiment, the notch part 30a is formed in the circuit cover 30, and the notch part 30a is covered with the resin cover 31. As shown in FIG.

With this configuration, even if the first opening 211 of the mounting board 210 is covered by the circuit cover 30, the sound generated by the sound generating element 240 is not easily leaked from the gap between the notch 30a and the resin cover 31, so that the desired volume can be satisfied. benchmark.

(Variation) As mentioned above, although the lighting fixture of this invention was demonstrated based on embodiment, this invention is not limited to the said embodiment.

For example, in the above-described embodiment, only one first opening 211 through which the sound generated by the sound emitting element 240 passes is formed on the mounting board 210 , but the present invention is not limited to this. That is, a plurality of first openings 211 may be formed in the mounting substrate 210 . Accordingly, since the sound generated by the sound generating element 240 can be more easily moved from the second surface 210b side to the first surface 210a side of the mounting board 210, it is easier to satisfy the desired volume standard.

In addition, in the above-mentioned embodiment, an example of a base is the apparatus main body 10 as an example, but it is not limited to this. For example, the base may be made of aluminum die casting or a heat sink made of high thermal conductivity resin.

In addition, in the above-mentioned embodiment, the light source module 20 is constituted by one mounting board 210, but it is not limited to this. For example, one annular light source module may be formed by arranging a plurality of arc-shaped substrates on which the light-emitting elements 220 are mounted.

In addition, in the above-described embodiment, the light-emitting element 220 is an SMD type LED element, but it is not limited to this. For example, it can also be a COB (Chip On Board) type light source module in which the LED chip (bare chip) itself is used as the light emitting element 220 and the LED chip is directly mounted (once mounted) on the substrate. In this case, the plurality of LED chips mounted on the substrate may be collectively sealed by the sealing member, or may be individually sealed. Moreover, this sealing member may contain wavelength conversion materials, such as a yellow fluorescent substance, as mentioned above.

Furthermore, in the above-described embodiment, the light-emitting element 220 is a B-Y type white LED light source that emits white light by using a blue LED chip and a yellow phosphor, but it is not limited to this. For example, a phosphor-containing resin containing a red phosphor and a green phosphor can be used, and white light can be emitted by combining the phosphor-containing resin with a blue LED chip. Furthermore, in order to improve the color rendering properties, in addition to the yellow phosphor, a red phosphor or a green phosphor may be mixed. In addition, LED chips that emit colors other than blue can also be used. For example, an ultraviolet LED chip that emits ultraviolet rays with a wavelength shorter than that of blue light emitted by blue LED chips can be used to emit blue light by being mainly excited by ultraviolet rays. The blue phosphor, green phosphor and red phosphor of red light and green light emit white light.

In the above-mentioned embodiment, the light source of the light-emitting element 220 is an LED, but other solid-state light-emitting elements such as semiconductor lasers, organic EL (Electro Luminescence), or inorganic EL can also be used.

Furthermore, in the above-described embodiment, as a functional unit other than the remote control receiving unit, a brightness sensor for detecting the brightness around the lighting fixture, a human body sensor for detecting a human body by infrared rays, or an image sensor for capturing images of the surrounding area may be provided inside. tester.

In addition, in the above-described embodiment, the lighting fixture 1 may be provided with a speaker inside which outputs the sound received by the lighting fixture 1 in a wired or wireless manner. In this case, for example, the loudspeaker can be controlled to output sound from the loudspeaker in synchronization with the lighting of the light source module 20 .

In addition, the above-described embodiments may be obtained by applying various modifications that can be considered by those skilled in the art, or by arbitrarily combining the constituent elements and functions of the above-described embodiments within the scope of not departing from the spirit of the present invention. Also included in the present invention.

1. 1X‧‧‧Lighting 2‧‧‧Lighting unit 10‧‧‧Apparatus body (abutment) 10a‧‧‧Side 1 10b‧‧‧Side 2 11‧‧‧Protrusion 12‧‧‧Recess 12a‧‧‧Opposite part 13‧‧‧Opening 20, 20X‧‧‧Light source module 210, 210X‧‧‧ mounting board 210a‧‧‧Side 1 210b‧‧‧Side 2 211‧‧‧First opening 212‧‧‧Second opening 220‧‧‧Light-emitting element 230‧‧‧Circuit Components 231‧‧‧The first circuit element 232‧‧‧Second circuit element 240‧‧‧Sound components 250‧‧‧Electrical Connector 30, 30X‧‧‧circuit cover 30a‧‧‧Notch 31‧‧‧Resin cover 40‧‧‧Light source cover 41‧‧‧Lens 42‧‧‧Projection 50‧‧‧Translucent cover 60‧‧‧cylindrical member 70‧‧‧Support member CA‧‧‧circuit area EA‧‧‧Light-emitting area

Fig. 1 is a cross-sectional view of the lighting fixture of the embodiment. [ Fig. 2 ] An exploded perspective view of the lighting fixture according to the embodiment. 3A is a perspective view of the light source module of the embodiment seen from the ceiling side. 3B is a perspective view of the light source module of the embodiment seen from the floor side. FIG. 4 is a plan view of the light source module of the embodiment. [ Fig. 5 ] A half cross-sectional view of the lighting fixture of the embodiment. [ Fig. 6 ] A half cross-sectional view of a lighting fixture of a comparative example.

1‧‧‧Lighting

10‧‧‧Apparatus body (abutment)

11‧‧‧Protrusion

12‧‧‧Recess

12a‧‧‧Opposite part

20‧‧‧Light source module

210‧‧‧Mounting board

210a‧‧‧Side 1

210b‧‧‧Side 2

211‧‧‧First opening

220‧‧‧Light-emitting element

230‧‧‧Circuit Components

231‧‧‧The first circuit element

232‧‧‧Second circuit element

240‧‧‧Sound components

30‧‧‧Circuit cover

40‧‧‧Light source cover

50‧‧‧Translucent cover

Claims (9)

A lighting unit, comprising: a base; a mounting substrate mounted on the base, which is a single-sided substrate on which wiring is formed on a first surface; one or more light-emitting elements mounted on the first surface of the mounting substrate; A plurality of circuit elements are mounted on the mounting substrate to constitute a power supply circuit for generating electric power for causing the light-emitting element to emit light; and sound-emitting elements are mounted on a second surface opposite to the first surface of the mounting substrate; the base The stage has an opposing portion facing the mounting board at a predetermined interval, and the mounting board has a first opening formed at a position facing the opposing portion, and a first opening formed in a central portion of the mounting board 2 openings; when the mounting substrate is mounted on the base, no member is inserted into the first opening; the center of the second opening is consistent with the center of the opening of the base; the light-emitting element There are a plurality of the light-emitting elements arranged in a manner to surround the second opening; the lighting unit further includes: a horizontal plug-in electrical connector disposed near the first opening. The lighting unit of claim 1, wherein the sound-emitting element is installed near the first opening. The lighting unit according to claim 1 or 2, wherein the plurality of circuit elements include large circuit elements with a projected area of 100 mm ² or more on the mounting substrate in plan view, and the sound-emitting element is not mounted around the sound-emitting element. Large circuit components. The lighting unit according to claim 1 or 2, wherein screw holes are formed on the mounting substrate as through holes other than the first opening and the second opening. The lighting unit of claim 4, wherein the opening area of the first opening is larger than the opening area of the screw hole. A lighting fixture further comprising: the lighting unit as described in any one of items 1 to 5 in the scope of the patent application; and a light-transmitting cover covering the lighting unit. The lighting apparatus of claim 6 of the scope of the application further comprises: a circuit cover covering the circuit element mounted on the first surface of the mounting substrate among the plurality of circuit elements. The lighting fixture according to claim 7, wherein a notch is formed in the circuit cover, and the notch is covered by a resin cover. The lighting fixture according to any one of claims 6 to 8, wherein the lighting fixture is a ceiling lamp installed on a ceiling, and the second surface of the mounting substrate to which the sound-emitting element is mounted is a ceiling-side surface.

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