JP2013140751A - Electric light bulb type light source apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric light bulb type light source apparatus capable of making an EMC (Electro Magnetic Compatibility) countermeasure while restraining the effect of heat from a light source.SOLUTION: An electric light bulb type light source apparatus includes a light source unit, a power source circuit, and a casing. The power source circuit has a primary circuit connected with an external power source, and a secondary circuit combined with the primary circuit in an insulated state and outputting power for driving the light source unit on the basis of the power from the primary circuit. The casing has a translucent cover, and a partial casing section with heat radiation thermally connected with the light source unit and conducted to the secondary circuit, and stores the light source unit and the power source circuit.

Description

  The present technology relates to a light bulb type light source device.

  In recent years, LED bulbs using LED (Light Emitting Diode) elements as light sources have been widely used instead of incandescent bulbs using filaments as light sources. For example, Patent Document 1 describes a technique for replacing an incandescent bulb, which has been widely used in the past, with a long-life and highly reliable LED bulb. In particular, the base of this device is formed by two AC terminals and one ground terminal, and a circuit subsequent to the secondary coil of the transformer of the power supply unit is connected to the ground terminal, and safety measures are taken ( For example, refer to the upper right column to the lower left column on page 3 of Patent Document 1, FIGS. 1 and 4).

JP-A-2-226604

  For example, when an LED bulb as described in Patent Document 1 is used, it is necessary to take measures against heat generated from the LED element. Further, it is required that EMI (Electro Magnetic Interference) is not generated and that an appropriate EMS (Electro Magnetic Susceptibility) is provided. That is, it is required to satisfy EMC (Electro Magnetic Compatibility) conditions.

  In view of the circumstances as described above, an object of the present technology is to provide a light bulb-type light source device capable of taking EMC countermeasures while suppressing the influence of heat from the light source.

In order to achieve the above object, a light bulb type light source device according to the present technology includes a light source unit, a power supply circuit, and a housing.
The power supply circuit is coupled to the primary side circuit connected to the external power supply and the primary side circuit in an insulated state, and outputs power for driving the light source unit based on the power from the primary side circuit Secondary side circuit.
The housing includes a translucent cover, a heat-radiating partial housing portion that is thermally connected to the light source unit and is conducted to the secondary circuit, and the light source unit and the power supply circuit are connected to each other. Accommodate.

  In this bulb-type light source device, a heat radiating partial housing portion is provided in a housing that houses the light source unit and the power supply circuit. As the partial housing portion and the light source unit are thermally connected, heat from the light source unit is released to the outside of the housing. Further, the partial housing portion is electrically connected to the secondary circuit included in the power supply circuit. As a result, radiation or intrusion of electromagnetic waves can be suppressed. As a result, it is possible to take EMC countermeasures while suppressing the influence of heat from the light source.

  The bulb-type light source device may further include a speaker. In this case, the secondary circuit may output power for driving the speaker. Since the secondary side circuit and the partial housing are electrically connected, for example, noise leakage from a speaker can be suppressed. This makes it possible to provide a light bulb type light source device equipped with a speaker with high quality.

  The speaker may be driven based on a signal received by wireless communication. As a result, it is possible to easily control sound reproduction by the speaker.

  The bulb-type light source device may further include an antenna for wireless communication. In this case, the secondary circuit may output power for driving the antenna. Since the secondary side circuit and the partial housing are electrically connected, leakage of noise from, for example, an antenna or a circuit for wireless communication can be suppressed. Accordingly, it is possible to provide a light bulb type light source device including an antenna for wireless communication with high quality.

  The bulb-type light source device may further include a sensor that outputs a predetermined signal. In this case, the secondary circuit may output electric power for driving the sensor. Since the secondary side circuit and the partial housing are electrically connected, for example, leakage of noise from the sensor can be suppressed. This makes it possible to provide a light bulb type light source device having various sensors with high quality.

  The partial housing portion may be electrically connected to the secondary circuit by any one of screwing, solder connection, wrapping, and connector connection. Thereby, a secondary side circuit and a partial housing | casing part can fully be conducted.

The light bulb type light source device may further include a power supply substrate and a drive substrate.
The power supply substrate has a void area, and the power supply circuit is formed.
The drive substrate is a substrate for driving the light source unit, and is disposed in a gap region of the power supply substrate so as to intersect the power supply substrate perpendicularly. Thereby, the arrangement | positioning density of a power supply board | substrate and a drive board | substrate can be raised, and size reduction of a lightbulb type light source device can be implement | achieved. Further, noise leakage from the driving substrate can be suppressed.

  The partial housing part may be made of a metal material having thermal conductivity.

  The light source unit may include an LED (Light Emitting Diode) or an EL (Electro Luminescence) element as a light source element.

  As described above, according to the present technology, it is possible to take an EMC countermeasure while suppressing the influence of heat from the light source.

FIG. 1 is a perspective view illustrating a light bulb-type light source device according to an embodiment of the present technology. FIG. 2 is a schematic cross-sectional view of the bulb-type light source device shown in FIG. FIG. 3 is a cross-sectional view illustrating a speaker according to an embodiment. FIG. 4 is a perspective view showing a holding member in the support unit. FIG. 5 is a perspective view of the substrate housing box of the support unit as viewed from below. FIG. 6 is a diagram showing an arrangement relationship between the power supply board and other boards (drive board and control board). FIG. 7 is a block diagram showing an electrical configuration of the light source device.

  Hereinafter, embodiments of the present technology will be described with reference to the drawings.

(Overall configuration of light bulb type light source device)
FIG. 1 is a perspective view illustrating a light bulb-type light source device according to an embodiment of the present technology. FIG. 2 is a schematic cross-sectional view of the light bulb type light source device 100 shown in FIG. In the following description, the light bulb type light source device is simply referred to as a light source device.

  The light source device 100 includes a housing 10, a light source unit 40 disposed in the housing 10, a speaker 30 provided at one end of the housing 10, and an electrical insulating ring 16. And a base 15 connected to the other end (the side opposite to the position of the speaker 30).

  For convenience of explanation, the following description will be made with the direction along the z-axis in FIGS. 1 and 2 as the front-rear direction of the light source device 100, specifically, the speaker 30 side as the front and the base 15 side as the rear.

  The housing 10 includes, for example, a base housing 12 and a translucent cover 11 attached to the base housing 12. As shown in FIG. 2, the translucent cover 11 includes a first opening 11 a provided at the front end portion and a second opening 11 b located on the opposite side along the z-axis direction. And are formed. The speaker 30 is attached to the translucent cover 11 so that the speaker 30 closes the first opening 11a. A base housing 12 is provided on the second opening 11 b side of the translucent cover 11. The translucent cover 11 is formed of, for example, glass, acrylic, polycarbonate, or the like.

  The light source device 100 includes a support unit 20 that supports the speaker 30. The support unit 20 integrally supports the light source unit 40, the speaker 30, and the base 15 so that the speaker 30 and the light source unit 40 are spaced apart and the light source unit 40 is disposed between the speaker 30 and the base 15. To do. As shown in FIG. 2, typically, the support unit 20 includes a heat sink 23, a holding member 21 that is fixed to the heat sink 23 and holds the speaker 30, and a substrate that is disposed so as to face the holding member 21. Box 22.

  The heat sink 23 of the support unit 20 functions as a chassis of the light source device 100. The heat sink 23 is arranged around a central axis C (see FIG. 2) that is an axis passing through the center of the speaker 30 along the vibration direction (z-axis direction) of the diaphragm 35 (see FIG. 3) included in the speaker 30. Has been. The term "around the axis" includes the concept of both the entire circumference of the axis or a part thereof. Typically, the heat sink 23 has a plate shape and is formed in the entire circumference of the central axis C, that is, in a ring shape.

  Similarly to the heat sink 23, the light source unit 40 is also disposed around the central axis C, typically provided in a ring shape, and disposed on the heat sink 23. For example, the light source unit 40 includes a ring-shaped mounting substrate 46 and a plurality of LED (Light Emitting Diode) elements 45 arranged in a ring shape on the mounting substrate 46. As one LED element 45, an element that generates white light is used, but an element that generates light of a single color or a plurality of colors other than white may be used.

  The heat sink 23 is mainly formed of, for example, aluminum, but other metal materials such as copper may be used as long as the material has high thermal conductivity. Alternatively, the material of the heat sink 23 may be a highly heat-dissipating resin having conductivity or a ceramic having conductivity.

  The base 15 is configured to be attachable to a general incandescent light bulb socket. The base 15 is a member that supplies power to a circuit board on which various circuits are mounted, the light source unit 40, and the speaker 30 via a power supply circuit 55 described later.

  The length of the light source device 100 in the z-axis direction is 100 to 120 mm, typically about 110 mm. The diameter of the light source device 100 viewed in the z-axis direction is 50 to 70 mm, typically about 60 mm.

(Specific configuration of speaker)
FIG. 3 is a cross-sectional view illustrating the speaker 30 according to an embodiment. The speaker 30 is a dynamic damperless speaker. The speaker 30 includes a frame 31, a permanent magnet 32, a plate 33, a yoke 34, a diaphragm 35, an edge 36, a coil bobbin 37, a magnetic fluid 38, and a mounting bottom 39.

  In the magnetic gap between the yoke 34 and the upper plate 33, a magnetic fluid 38 is disposed in place of the conventional damper. A voice coil (not shown) is disposed in the magnetic gap. A screw hole 39 a is formed in the attachment bottom 39. As will be described later, the speaker 30 is attached to the holding member 21 of the support unit 20 with the screw S3 (see FIG. 2) through the screw hole 39a.

  As will be described later, in the present embodiment, the speaker 30 and the light source unit 40 are spaced apart from each other, so that the speaker 30 is not easily affected by the heat of the light source unit 40. Therefore, as the permanent magnet 32 used for the speaker 30, a permanent magnet having a relatively low heat resistance, that is, a relatively low demagnetizing temperature can be used. For example, a permanent magnet having a demagnetization temperature of 60 ° C. to 100 ° C. can be used. An example of a permanent magnet having a demagnetization temperature of 100 ° C. or less is neodymium.

  The magnetic force of neodymium magnets is higher than that of ferrite core magnets, but neodymium demagnetization temperature is about 80 ° C., which is lower than that of ferrite. When applying the ferrite core magnet to the speaker 30 of the light source device 100 according to the present embodiment, the size of the ferrite core magnet must be increased in order to obtain a magnetic force equivalent to that of the neodymium magnet. Not suitable for miniaturization. Although it is conceivable to reduce the heat generation amount of the light source unit 40 so that the permanent magnet is not demagnetized, this means that the input power to the light source device 100 is suppressed, and this reduces the amount of light flux.

  Therefore, in this embodiment, although the heat resistance is lower than that of ferrite, the above problem is solved by using neodymium having a large magnetic force and disposing the speaker 30 and the light source unit 40 apart from each other.

  For example, at least a part of the frame 31 of the speaker 30 and at least a part of the edge 36 may be formed of a translucent material. As the translucent material, known materials such as acrylic, polyvinyl, and polyimide resin materials are used. Thereby, since the light emitted from the light source unit 40 passes through a part of the speaker 30, the light distribution characteristic near the center of the light source device 100 can be improved.

(Specific configuration of support unit)
FIG. 4 is a perspective view showing the holding member 21 in the support unit 20. The holding member 21 includes a cylindrical portion 211 to which the speaker 30 is attached, and a flange portion 212 provided at an end portion on the rear side of the cylindrical portion 211. The holding member 21 is placed in the housing 10 so that the cylindrical portion 211 passes through the central hole of the heat sink 23 and the light source unit 40, and the longitudinal direction of the cylindrical portion 211 is along the z-axis direction. Has been placed.

  A screw hole 215 is provided in the front end face of the cylindrical portion 211, and a screw S3 (see FIG. 2) is screwed into the screw hole 215 and the screw hole 39a formed in the speaker 30. Thereby, the speaker 30 is held by the holding member 21. The means for attaching the speaker 30 to the holding member 21 is not limited to screwing, but may be adhesion by an adhesive or engagement by an uneven member.

  As shown in FIG. 2, the holding member 21 is attached to the heat sink 23 with screws S1. Specifically, a mounting portion 213 for screwing is formed on the flange portion 212 of the holding member 21 so as to protrude rearward. The heat sink 23 is placed on the flange portion 212, and the holding member 21 is attached to the heat sink 23 via the attachment portion 213 from the back side (rear side) of the heat sink 23.

  According to such a configuration of the holding member 21 and the heat sink 23, as described above, the light source unit 40 is arranged to be separated from the speaker 30 on the rear side, and therefore, the thermal influence from the light source unit 40 on the speaker 30. Can be suppressed. Thereby, the function of the speaker 30 can be maintained favorably. For example, when the thermal effect on the speaker 30 is large, there is a concern that the permanent magnet 32 provided in the speaker 30 may be demagnetized, but the light source device 100 according to the present embodiment eliminates such a concern. be able to.

  In addition, the speaker 30 is disposed on the light emission side of the light source unit 40, that is, a position that blocks the emitted light. However, the light distribution angle is increased by providing the light source unit 40 in a ring shape. Further, the light source unit 40 can emit light with a uniform amount of light with respect to the central axis C.

  In the present embodiment, the holding member 21 that holds the speaker 30 is disposed so as to be surrounded by the light source unit 40. Therefore, the arrangement space of the holding member 21 and the light source unit 40 in the light bulb type light source device 100 can be reduced, that is, the arrangement density of these members can be increased, so that a desired light distribution angle is secured. In addition, the light source device 100 can be reduced in size.

  The cylindrical portion 211 of the holding member 21 may be provided with a reflecting portion that reflects the light emitted from the light source unit 40. The reflection portion is, for example, a mirror surface or a portion made of a color material having a high light reflectance. The color having a high reflectance is, for example, white, milky white, or a color close to these. Of course, the holding member 21 itself may be formed of a white or milky white resin material. As the resin material, ABS (acrylonitrile butadiene styrene), PBT (polybutylene terephthalate), or the like is used, but other materials may be used.

  In addition, when the reflecting portion is formed of a material made of white or milky white, the reflecting portion can diffusely reflect (scatter) light. Alternatively, even if the reflecting portion is a blasted reflecting surface, the reflecting surface can diffusely reflect light.

  As described above, the provision of the reflective portion can increase the light distribution angle of the light emitted from the light source unit 40, can effectively use the light from the light source unit 40, and can increase the illuminance. it can.

  FIG. 5 is a perspective view of the substrate housing box 22 of the support unit 20 as viewed from below. The substrate storage box 22 includes a main body 221, a contact plate 222 provided so as to protrude from the main body 221 in a direction perpendicular to the z-axis, and a protrusion provided so as to protrude from the main body 221 along the z-axis direction. Part 223. Although a plurality of contact plates 222 having different shapes are provided in FIG. 5, only one contact plate 222 may be provided.

  The main body 221 is formed with a connection hole 224 to which a not-shown conductive connector is connected. A plurality of connection holes 224 may be provided.

  As shown in FIG. 2, the main body 221 is provided so as to stand up along the z-axis direction, and the holding member 21 and the contact plate 222 are in contact with the flange portion 212 of the holding member 21. The substrate housing box 22 is disposed in the housing 10 so as to face each other. The circuit board is arranged in the region formed in the holding member 21 and the substrate housing box 22 arranged in this way, that is, in the region in the cylindrical portion 211 and the main body 221. A plurality of, for example, two such circuit boards are provided (drive board 61 and control board 62). As will be described later, the drive substrate 61 is provided as a common substrate on which an LED drive circuit 614 and an audio AMP (Amplifier) 613 (see FIG. 7) described later are mounted.

  As shown in FIG. 2, the protruding portion 223 is disposed inside the base 15 so as to be inserted into the opening end portion 12 b on the rear side of the base housing 12. The projecting portion 223 is formed in a cylindrical shape, and a lead wire (not shown) that connects a terminal at the top of the base 15 and a power supply substrate 50 described later passes through the projecting portion 223. .

  Similar to the holding member 21, the substrate housing box 22 is formed of a non-conductive material, for example, mainly a resin material of ABS. As described above, the holding member 21 and the substrate housing box 22 are made of materials suitable as electrical insulating materials and flame retardant materials.

  In particular, the base 15 side of the drive board 61 and the control board 62 is covered with the non-conductive substrate housing box 22 as in this embodiment, so that the base 15 side, particularly the primary circuit of the power supply circuit, is connected. Electrical insulation can be reliably maintained. In that sense, a non-conductive sheet may be used instead of the substrate storage box 22.

  A plurality of openings 214 are formed in the cylindrical portion 211 of the holding member 21. Thereby, in the housing 10, the region outside the cylindrical portion 211 of the holding member 21 communicates with the region in the cylindrical portion 211 and the substrate storage box 22 through the opening 214. According to such a configuration, not only the area outside the cylindrical part 211 but also the area inside the cylindrical part 211 and the substrate housing box 22 can be used as the enclosure of the speaker 30 in the housing 10. it can. Thereby, the volume of the enclosure is increased and the sound quality of the speaker 30 is improved. Note that only one opening 214 may be formed in the cylindrical portion 211.

  The base housing 12 is made of a material having a relatively high thermal conductivity, for example, mainly aluminum. As the material of the base casing 12, other metal materials such as copper may be used as long as the materials have high thermal conductivity. Alternatively, the material of the base housing 12 may be a highly heat-dissipating resin having conductivity or a ceramic having conductivity.

  The heat sink 23 and the base housing 12 are thermally connected to each other. As shown in FIG. 2, for example, the open end 12 a provided in the base housing 12 and the side surface of the heat sink 23 are in direct contact with each other through a heat conductive sheet or the like, so that heat between those members is obtained. Conduction takes place. Thereby, the heat generated from the light source unit 40 is efficiently released to the outside through the heat sink 23 and the base casing 12. In the present embodiment, the base casing 12 corresponds to a heat radiating partial casing.

  The main materials of the heat sink 23 and the base housing 12 may be different from each other.

  Referring to FIG. 2, the translucent cover 11 is a base so that the opening surface of the opening end 12 a of the base housing 12 and the opening surface of the second opening 11 b of the translucent cover 11 face each other. It is arranged with respect to the housing 12. The support unit 20 supports the speaker 30 so as to press the translucent cover 11 against the heat sink 23 by the speaker 30, and sandwiches the translucent cover 11 between the speaker 30 and itself (support unit 20).

  The heat sink 23 mainly forms the base 29 of the support unit 20. The base portion 29 of the support unit 20 also includes a flange portion 212 of the holding member 21. Further, the base 29 of the support unit 20 may include the base housing 12.

  As described above, the speaker 30 supported by the support unit 20 plays a role of holding the translucent cover 11 between the heat sink 23 and pressing the translucent cover 11 against the heat sink 23 to support it. Therefore, it is not necessary to directly fix the translucent cover 11 to the heat sink 23 and the speaker 30. For this reason, even if the translucent cover 11 having a thermal expansion coefficient different from the thermal expansion coefficients of the heat sink 23 and the speaker 30 (the frame 31) is thermally expanded due to the temperature change of the light source unit 40, the heat sink 23 and the speaker It is possible to allow deformation due to thermal expansion in each of the openings 11a and 11b respectively facing 30 and to release thermal expansion stress. Therefore, a situation in which mechanical stress is generated in the translucent cover 11 and the translucent cover 11 is deteriorated can be suppressed.

(Configuration of various circuit boards)
As shown in FIG. 2, a power supply board 50 on which a power supply circuit 55 is mounted is accommodated in the base casing 12. The power supply board 50 is attached to the holding member 21 with screws S2. In addition, the power supply substrate 50 is also attached to the heat sink 23 by the above-described screw S <b> 1 connecting the holding member 21 and the heat sink 23.

  Here, it is generally desirable to reduce the size of an LED bulb as close as possible to an incandescent bulb shape from the viewpoint of suitability of the LED bulb to a lighting fixture. When the product size of the LED bulb is significantly increased, the product value is lowered. If the power supply board and the LED drive circuit board are arranged on the same plane or arranged along parallel planes, not only the product size increases, but also the housing near the base The outer size of the will also be thicker. Since it is ideal to realize an LED bulb in which the outer peripheral size of the casing near the base is close to an incandescent bulb from the viewpoint of compatibility with the lighting fixture, also from this point of view, the power supply board and other A product in which a circuit board is arranged on the same plane causes a reduction in product value. Therefore, in the present technology, each circuit board is arranged as follows.

  FIG. 6 is a diagram showing the positional relationship between the power supply substrate 50 and other substrates (the above-described drive substrate 61 and control substrate 62). The power supply board 50 has a gap area 50a, and a part of each of the drive board 61 and the control board 62 is disposed in the gap area 50a.

  Typically, the void region 50a is formed by a through hole, that is, the power supply substrate 50 is formed in a ring shape. Specifically, as shown in FIG. 2, the main body 221 of the substrate housing box 22 is inserted into the gap region 50a. Thereby, the drive board 61 and the control board 62 arranged in the board housing box 22 and the holding member 21 are arranged so as to intersect the power board 50 vertically through the through holes of the power board 50. Is done.

  As described above, since the drive board 61 and the control board 62 are arranged so as to be inserted into the through holes of the power supply board 50, it is possible to efficiently arrange components in a small accommodation space in the housing 10. The light source device 100 can be downsized.

  Specifically, the envelope shape of each of the substrates arranged in this way approximates a shape in which two substantially triangular shapes are arranged opposite to each other along the z-axis direction. This shape approximates the external shape of the housing 10 including the base housing 12 and the translucent cover 11 when the light source device 100 is viewed from the side. That is, with the arrangement of the substrates 50, 61, and 62, the density of components in the housing 10 can be increased, and the light source device 100 can be downsized.

  Moreover, since each board | substrate 50, 61, and 62 can be arrange | positioned in the housing | casing 10 with high density, the volume as the enclosure of the speaker 30 can fully be ensured. Therefore, the sound quality of the speaker 30 can be improved.

  As shown in FIG. 6, a receiving unit (or light receiving unit) 628, an antenna 626, and a network control circuit 627 are mounted on the control board 62.

  The receiving unit 628 receives an infrared signal transmitted from a remote controller (not shown) that can be used by the user. The position of the control board 62 is such that the receiving unit 628 is located in the housing 10 at a position where the infrared signal can be received, that is, in an area in the translucent cover 11 (an area in front of the light source unit 40). And the posture is set. For example, the receiving unit 628 is mounted on the front end of the control board 62. A remote controller (not shown) is a device that generates signals such as lighting, extinguishing, dimming, and toning of the light source unit 40, for example.

  The antenna 626 is typically an antenna for near field communication such as Bluetooth. The network control circuit 627 is configured to correspond to the communication standard. The position of the drive substrate 61 is such that the antenna 626 is positioned in the housing 10 at a position where the radio signal can be received, that is, in an area within the translucent cover 11 (an area in front of the light source unit 40). And the posture is set. For example, an AV (Audio Video) device that is a target device operated by the user transmits a wireless signal, and the antenna 626 receives the wireless signal. The signal transmitted by the AV device is, for example, a signal for sound volume from the speaker 30, playback and stop thereof. The AV device may be a portable device.

  Note that the antenna 626 and the network control circuit 627 may correspond to a communication standard for configuring a WiFi (Wireless Fidelity), ZigBee, or a wireless LAN (Local Area Network) other than Bluetooth.

  The power supply substrate 50 has a first surface 51 that faces the base 15 side and a second surface 52 that faces the light source unit 40 side. The power supply circuit 55 mounted on the power supply board 50 includes a transformer 56T (see FIG. 2) including a primary side coil and a secondary side coil, and primary side electrons electrically connected to the primary side coil. And a component 56. The transformer 56 </ b> T and the primary side electronic component 56 are mounted on the first surface 51 of the power supply substrate 50.

  As described above, the transformer 56T and the primary-side electronic component 56 having a relatively large size are arranged on the base 15 side of the power supply substrate 50, so that the power source is placed in the space on the front side from the second surface 52 side. Parts different from the circuit 55, for example, a part of the light source unit 40 and the support unit 20 can be arranged. Thereby, the narrow space in the housing | casing 10 (or base housing | casing 12) can be used effectively.

[Electric configuration of light source device]
FIG. 7 is a block diagram showing an electrical configuration of the light source device 100.

  The light source device 100 includes a filter 53, a rectifying / smoothing circuit 54, an insulated DC / DC converter 57, an LED drive circuit 614, an audio AMP 613, a network control circuit 627, and an antenna 626. The commercial power supply 150 supplies power to the power supply circuit 55 via the base 15 of the light source device 100. Thus, in this embodiment, the commercial power supply 150 is used as an external power supply. Other external power sources may be used.

  The filter 53, the rectifying / smoothing circuit 54, and the insulated DC / DC converter 57 are the power supply circuit 55, and are mounted on the power supply substrate 50 as described above. The insulated DC / DC converter 57 includes the transformer 56T described above. An isolated DC / DC converter 57 is used for the power supply circuit 55, and the primary side circuit and the secondary side circuit are coupled in an electrically insulated state.

  The LED drive circuit 614 and the audio AMP 613 are mounted on the drive board 61 as described above. The LED drive circuit 614 controls the light source unit 40 to be turned on / off, dimmed, and toned. The audio AMP 613 is a driving circuit for the speaker 30 and controls the sound volume, reproduction, and stop of the sound by the speaker 30.

  As described above, the network control circuit 627 and the antenna 626 are part of the control circuit 625 and are mounted on the control board 62. The network control circuit 627 outputs the content information of the received signal to the LED driving circuit 614 and the audio AMP 613 based on the signal received via the receiving unit 628 and the antenna 626.

  As shown in FIG. 7, necessary predetermined power is supplied from the secondary circuit of the power supply circuit 55 to the LED drive circuit 614, the audio AMP 613, and the network control circuit 627. Each power is supplied based on the power from the primary side circuit. Therefore, in the present embodiment, the power for driving the light source unit 40, the power for driving the speaker 30, and the power for driving the antenna 626 are output by the secondary side circuit of the power supply circuit 55, respectively.

(Electric circuit ground connection configuration)
As shown in FIG. 2, a secondary-side ground connection pattern 59 is formed on the first surface 51 of the power supply substrate 50. The ground connection pattern 59 is electrically connected to the heat sink 23 and the base housing 12 via the screw S1. That is, the heat sink 23 and the base housing 12 serve as an electrical ground for the power supply circuit 55.

  As described above, in this embodiment, an insulating power supply circuit is used, and the secondary circuit is grounded. Therefore, EMI (Electro Magnetic Interference) or the like is not generated, proper EMS (Electro Magnetic Susceptibility) can be obtained, and EMC (Electro Magnetic Compatibility) conditions can be satisfied. That is, the present technology can suppress leakage of electromagnetic waves and high-frequency noise from the drive substrate 61, the antenna 626, the network control circuit 627, and the like, and can also suppress leakage of radiation (radiation) noise from the speaker 30. Of course, the entry of external noise into the base housing 12 can also be suppressed.

  Conventionally, an LED bulb using a non-insulated circuit is known. In such an LED bulb, an insulating configuration is mechanically realized using an insulating film or the like. That is, the circuit-like insulation configuration as in this embodiment is not taken. In such a situation, when an additional function such as a voice transmission function (speaker) or a wireless reception function (antenna) is given to the LED bulb, a noise problem with respect to EMC becomes a concern. That is, there is a high possibility that the EMC countermeasure is not sufficient in the mechanical insulation configuration.

  Here, an additional function given to a light source device such as an LED bulb will be described.

  The spread of LED bulbs is increasing due to the current power situation and power saving trend. However, there are still few products that can be dimmed individually. The background is as follows.

  That is, a dimming volume incorporated in a wall switch or the like for dimming a conventional light bulb is controlled to provide a section in which a voltage is cut by phase-controlling a sine wave of a commercial power source. When a general LED bulb or a bulb-type fluorescent lamp is used for such a dimmer, an inrush current flows every cycle of the sine wave, and it is damaged early. In order to solve this, for example, a circuit configuration such as an active filter system or a charge pump system for increasing the power factor can be considered. However, when such a circuit configuration is adopted, the circuit becomes large and it becomes difficult to reduce the size of the product.

  Therefore, a method of performing dimming control with an external signal, rather than dimming with an existing light bulb dimmer, can be considered. LED bulbs that perform dimming control with an infrared remote controller have already been released, but in this case, a remote controller is essential.

  Considering home appliance control such as a so-called smart house, utilities cannot be improved if a separate remote control is required. For this reason, it is expected that there will be an increasing need for dimming control from devices such as personal computers, smartphones, and tablets using radio signals. That is, there is a high possibility that a light source device to which a wireless reception function is added is required.

  In addition, the needs of speakers using a network are increasing due to the needs of housewives who want to listen to TV audio in the kitchen. However, adding a new outlet connection device to a water place such as a kitchen becomes an introduction barrier and a space such as a storage place becomes a problem. Therefore, there is a high possibility that a light source device to which a voice transmission function is added is required.

  In this way, there is a need for a light bulb to have a new additional function, and it is also an EMC problem including radiation noise that becomes a problem. That is, a light source device capable of exhibiting sufficient EMC countermeasures is required.

  As described above, in the light source device 100 according to the present embodiment, the insulating power supply circuit 55 is used. A base housing 12 that is a heat-dissipating partial housing portion is provided in the housing 10 that houses the light source unit 40 and the power supply circuit 55. When the base casing 12 and the light source unit 40 are thermally connected, heat from the light source unit 40 is released to the outside of the casing 10. The base housing 12 is electrically connected to the secondary circuit included in the power supply circuit 55. As a result, radiation or intrusion of electromagnetic waves can be suppressed. As a result, it is possible to take EMC countermeasures while suppressing the influence of heat from the light source unit 40. This EMC countermeasure functions sufficiently even when an additional function such as a voice transmission function is provided. This makes it possible to provide a high-quality light bulb-type light source device that includes a speaker, an antenna for wireless communication, and the like.

  Further, by taking the above EMC countermeasure, the light source device 100 can be applied to a so-called smart house.

  In the present embodiment, the members that form the ground potential are the heat sink 23 and the base casing 12 that function as heat dissipation members. That is, since the heat sink 23 and the base casing 12 have both functions of forming a ground potential and radiating heat, it is not necessary to provide a separate ground member, which contributes to downsizing of the light source device 100.

  In addition to the above-described screwing, solder connection, wrapping, connector connection, or the like may be used. That is, the ground of the secondary circuit and the base housing 12 may be electrically connected by any one of screwing, solder connection, lapping, and connector connection. Thereby, the secondary side circuit and the base housing 12 can be sufficiently conducted. For these conduction methods, a ground pattern, a ground terminal, and the like may be appropriately formed. Further, the ground of the secondary circuit and the base housing 12 may be conducted without using the heat sink 23. In addition, any method may be used as a conduction method between the secondary circuit and the base housing 12.

(Other embodiments)
The present technology is not limited to the embodiments described above, and other various embodiments can be realized.

  In the said embodiment, the light source unit 40 which mounted the LED element 45 which has a point light emission function was mentioned as an example as the light source unit 40. FIG. The light source unit is not limited to this, and may be, for example, an organic or inorganic EL (Electro Luminescence) element, that is, a light source unit having a surface light emitting function, or a CCFL (Cold Cathode Fluorescent Lighting (3) having a three-dimensional light emitting function. Lamp)) or the like.

  Further, although the light source unit 40 has a ring shape, it may have a polygonal shape of a triangle or more, or a linear shape (formed in one or more linear shapes). The power supply board 50 may have another shape for the same purpose.

  In the above embodiment, a damperless speaker is exemplified as the speaker 30, but a general type speaker 30 that does not use the magnetic fluid 38 may be used.

  The gap region 50a of the power supply substrate 50 may be a notch instead of the through hole. Or the space | gap area | region 50a may be formed of both the through-hole and the notch. In this case, the power supply substrate 50 is formed in a C shape. Alternatively, the power supply substrate 50 may be formed in a semi-ring shape.

  In the embodiment described above, the infrared signal receiver 628 is mounted on the control board 62, but may be mounted on the drive board 61. Alternatively, the infrared signal receiving unit 628 from the remote controller is not necessarily provided.

  Although the light source device according to the embodiment includes the speaker, the light source device may include another device instead of the speaker. Examples of other devices include an image sensor, an optical sensor, an ultrasonic sensor, a radiation sensor, and a temperature sensor. Such a sensor that outputs a predetermined signal may be provided.

  In that case, power for driving the sensor is output from the secondary circuit of the power supply circuit 55 shown in FIG. As described above, since the secondary circuit and the base casing 12 are electrically connected, for example, leakage of noise from the sensor can be suppressed. This makes it possible to provide a light bulb type light source device having various sensors with high quality.

  It is also possible to combine at least two feature portions among the feature portions of each embodiment described above.

The present technology can be configured as follows.
(1) a light source unit;
A primary side circuit connected to an external power source, and a secondary side circuit that is coupled to the primary side circuit in an insulated state and outputs power for driving the light source unit based on power from the primary side circuit A power circuit having
A housing that houses the light source unit and the power supply circuit, the light-transmitting cover; A light bulb type light source device comprising:
(2) The light bulb type light source device according to (1),
Equipped with speakers,
The secondary circuit outputs a power for driving the speaker.
(3) The light bulb type light source device according to (2),
The speaker is a bulb-type light source device that is driven based on a signal received by wireless communication.
(4) The bulb-type light source device according to any one of (1) to (3),
It has an antenna for wireless communication,
The secondary circuit outputs a power for driving the antenna.
(5) The light bulb type light source device according to any one of (1) to (4),
A sensor that outputs a predetermined signal;
The secondary circuit outputs a power for driving the sensor.
(6) The bulb-type light source device according to any one of (1) to (5),
The partial housing is electrically connected to the secondary circuit by any one of screwing, solder connection, wrapping, and connector connection.
(7) The bulb-type light source device according to any one of (1) to (6),
A power supply substrate having a void area and having the power supply circuit formed thereon;
A light bulb-type light source device comprising: a drive substrate for driving the light source unit, which is disposed in a gap region of the power supply substrate so as to intersect the power supply substrate perpendicularly.
(8) The light bulb type light source device according to any one of (1) to (7),
The partial housing is a light bulb type light source device made of a metal material having thermal conductivity.
(9) The light bulb type light source device according to any one of (1) to (8),
The light source unit includes a light emitting diode (LED) or an EL (Electro Luminescence) element as a light source element.

DESCRIPTION OF SYMBOLS S1 ... Screw 10 ... Housing 11 ... Translucent cover 12 ... Base housing 30 ... Speaker 40 ... Light source unit 45 ... LED element 50 ... Power supply board 50a ... Air gap area 55 ... Power supply circuit 56T ... Transformer 57 ... Insulation DC / DC Converter 59 ... Ground connection pattern 61 ... Driving board 62 ... Control board 100 ... Light bulb type light source device 150 ... Commercial power source 626 ... Antenna

Claims (9)

A light source unit;
A primary side circuit connected to an external power source, and a secondary side circuit that is coupled to the primary side circuit in an insulated state and outputs power for driving the light source unit based on power from the primary side circuit A power circuit having
A light-transmitting cover; a heat-dissipating partial housing that is thermally connected to the light source unit and that is conducted to the secondary circuit; and a housing that houses the light source unit and the power supply circuit; A light bulb type light source device comprising: The light bulb type light source device according to claim 1, further comprising:
Equipped with speakers,
The secondary circuit outputs a power for driving the speaker. The light bulb type light source device according to claim 2,
The speaker is a bulb-type light source device that is driven based on a signal received by wireless communication. The light bulb type light source device according to claim 1, further comprising:
It has an antenna for wireless communication,
The secondary circuit outputs a power for driving the antenna. The light bulb type light source device according to claim 1, further comprising:
A sensor that outputs a predetermined signal;
The secondary circuit outputs a power for driving the sensor. The light bulb type light source device according to claim 1,
The partial housing is electrically connected to the secondary circuit by any one of screwing, solder connection, wrapping, and connector connection. The light bulb type light source device according to claim 1, further comprising:
A power supply substrate having a void area and having the power supply circuit formed thereon;
A light bulb-type light source device comprising: a drive substrate for driving the light source unit, which is disposed in a gap region of the power supply substrate so as to intersect the power supply substrate perpendicularly. The light bulb type light source device according to claim 1,
The partial housing is a light bulb type light source device made of a metal material having thermal conductivity. The light bulb type light source device according to claim 1,
The light source unit includes a light emitting diode (LED) or an EL (Electro Luminescence) element as a light source element.

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