JP4893407B2 - Illuminated speaker device - Google Patents

Description

  The present invention relates to a speaker device with illumination in which a lighting fixture and a speaker are integrally formed, and is particularly suitable for a speaker device with illumination that includes a straight fluorescent tube as the lighting fixture.

2. Description of the Related Art Conventionally, a speaker system with illumination in which a lighting fixture and a speaker are integrally formed has been proposed.
For example, Patent Document 1 includes a reproduction unit that includes a speaker and is connected to an attachment connection portion of a ceiling luminaire and has a luminaire attached to a lower portion, and the reproduction unit is supplied via the attachment connection portion. An audio apparatus having a decoder for taking out an audio signal superimposed on a power source and driving a speaker is disclosed.
Patent Document 2 discloses a spherical shell-shaped reflector horn, a speaker mounted on the curved side of the reflector horn and having an opening so as to radiate sound toward the reflector horn, and an illumination bulb at the bottom. There is disclosed a directional speaker device that includes a small box that houses a lamp and that reflects light emitted from a light bulb lamp for illumination by a reflector horn and focuses only on a lower portion of the reflector horn.
JP-A-2005-12765 Japanese Patent No. 3211321

However, in the conventional speaker device with illumination as described above, the mounting position and mounting direction of the speaker are limited by the installation location, the shape of the lighting fixture, and the like.
For example, in patent document 2, the speaker is arrange | positioned so that a sound may be radiated | emitted toward the wall surface direction from the apparatus connected to the attachment connection part of the lighting fixture of a ceiling. Moreover, in patent document 3, the speaker is arrange | positioned so that a sound may be radiated | emitted toward a spherical shell-shaped reflector horn.
For this reason, when an audio system is constructed using a conventional illuminated speaker device, it is difficult to realize stereo reproduction with one illuminated speaker device, and it is actually necessary to arrange two illuminated speaker devices. was there.
The present invention has been made in view of the above-described problems, and an object thereof is to provide an illuminated speaker device that can realize stereo reproduction with a single device.

In order to achieve the above object, an illuminated speaker device of the present invention supports illumination means including a straight tube fluorescent tube, speakers disposed on both sides in the axial direction of the straight tube fluorescent tube, and each speaker. A speaker cabinet and a hollow tubular acoustic tube arranged in parallel in the axial direction of the straight tube fluorescent tube and having one end supported by at least one of the speaker cabinets are provided.
The illuminated speaker device of the present invention includes a receiving unit that receives a reproduction signal transmitted in a predetermined signal form, and an amplification unit that amplifies the signal level of the reproduction signal received by the receiving unit, The reproduction signal amplified by the amplification means is reproduced by the speaker.
In the illuminated speaker device of the present invention, the speaker is arranged such that the radiation surface is orthogonal to the axial direction of the straight tube fluorescent tube and along the outer surface of the speaker cabinet.
Further, the illuminated speaker device of the present invention includes a diffusing member that diffuses radiated sound radiated from the speaker in front of the radiating surface of the speaker.

According to the present invention, by arranging speaker cabinets having speakers at both axial ends of the straight tube fluorescent tube, the speakers can be separated by the length of the straight tube fluorescent tube. Stereo reproduction can be realized by the device.
In the present invention, since sufficiently long acoustic tubes are arranged in parallel along the axial direction of the straight tube fluorescent tube, a sufficiently low resonance frequency can be obtained, and unprecedented low-frequency sound reproduction becomes possible.

Hereinafter, embodiments of the illuminated speaker device of the present invention will be described.
1A and 1B are diagrams showing a configuration of an illuminated speaker device according to an embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a front view. Note that the illumination function of the present embodiment does not directly illuminate with the light source of the luminaire, but is indirect illumination in which light from the light source is reflected on the ceiling or wall and illuminated with indirect light.
In the speaker device with illumination (hereinafter simply referred to as “speaker device”) 1 shown in FIGS. 1A and 1B, the illumination and the speaker are integrally configured. Such a speaker device 1 is installed, for example, on a wall surface 20 in a room with its longitudinal direction set sideways (horizontal). For example, an elongated rectangular wooden panel 2 is attached to the front surface of the speaker device 1. The length of the speaker device 1 in the longitudinal direction is about 120 cm.
Inside the wooden panel 2, a straight fluorescent tube 3 of about 100 cm is provided as a lighting fixture (illuminating means). In addition, speaker cabinets 4a and 4b are arranged on both sides in the axial direction of the straight tube fluorescent tube 3, respectively. Speakers 5a and 5b are attached to the speaker cabinets 4a and 4b, respectively.
The speakers 5a and 5b are disposed on the outer surfaces of the speaker cabinets 4a and 4b, respectively, with the radiation surfaces orthogonal to the axial direction of the straight tube fluorescent tube 3. The speakers 5a and 5b are arranged on the outer surfaces of the speaker cabinets 4a and 4b. When the illumination function is indirect illumination as in the present embodiment, the radiation of the speakers 5a and 5b is given to the user who is on the front in terms of design. In order not to show the surface, the speakers 5 a and 5 b are attached sideways along the wall surface 20. Of course, it goes without saying that the speakers 5a and 5b may be arranged so that the radiation surfaces face the front.

Further, in front of the radiating surfaces of the speakers 5a and 5b, in order to optimize the radiated sound radiated from the speakers 5a and 5b, a diffuser that diffuses the radiated sound radiated from the speakers 5a and 5b (diffusion) Members) 6a, 6b are provided. The diffuser 6b does not disturb the sound radiated from the center to the rear side (the wall surface 20 side) as much as possible, and the radiated sound radiated from the center to the front side (the side opposite to the wall surface 20) It is shaped to radiate forward. The diffusers 6a and 6b will be described later.
Furthermore, in the speaker device 1 of the present embodiment, for the reinforcement of the low sound, hollow speaker tubes 7a and 7b are arranged in parallel in the axial direction of the straight fluorescent tube 3 in each speaker cabinet 4a and 4b. And one end thereof is supported. In this case, the length of each acoustic tube 7a, 7b is about 90 cm, for example. In this embodiment, the acoustic tubes 7a and 7b are attached to the speaker cabinets 4a and 4b. However, the speaker tubes 4a and 4b may be provided only on the speaker cabinets 4a and 4b.
Further, in the speaker device 1 of the present embodiment, an inverter circuit (illuminating means) 8 for lighting the straight tube fluorescent tube 3, a receiving device (receiving means) 9 for receiving a reproduction signal, a speaker 5a, An amplifier (amplifying means) 10 for driving 5b is provided.

  In the speaker device 1 configured as described above, the speaker cabinets 4a and 4b provided with the speakers 5a and 5b are arranged on both sides of the straight tube fluorescent tube 3 in the axial direction, so that the shaft of the straight tube fluorescent tube 3 is arranged. Since the speakers 5a and 5b can be separated by the length in the direction, stereo reproduction can be realized by one speaker device 1.

FIG. 2 is a diagram schematically showing the radiated sound radiated from the speaker. The present embodiment will be described by taking the radiated sound radiated from the speaker 5b as an example.
As shown in FIG. 2, among the radiated sounds radiated from the speaker 5b, the radiated sound S1 radiated from the center of the speaker 5b to the rear side (wall surface 20 side) is radiated without being reflected by the diffuser 6b. Most of the light is reflected by the wall surface 20 and surrounding walls (not shown) and turns forward. On the other hand, the radiated sound S2 radiated to the front side (the side opposite to the wall surface 20) from the center of the speaker 5b is reflected by the diffuser 6b and directly radiated forward. That is, in the present embodiment, the diffuser 6b is provided in front of the speaker 5b in order to optimize the sound radiation radiated from the speaker 5b while effectively utilizing the reflection of the wall surface 20. Therefore, it is possible to balance the direct sound and the indirect sound radiated from the speaker 5b by the diffuser 6b, and a good sound field can be realized. When the radiation surfaces of the speakers 5a and 5b are arranged in the front direction (listener direction), there is no problem with sound emission from the speakers 5a and 5b, so that the diffusers 6a and 6b do not need to be provided.

Further, in the speaker device 1 of the present embodiment, the acoustic sound 7a, 7b is connected to the speaker cabinets 4a, 4b, so that the radiated sound S1 radiated from the speaker 5 to the back side is transmitted to the speaker cabinets 4a, 4b. Resonance is performed by the connected acoustic tubes 7a and 7b, and bass is enhanced. The frequency to be enhanced is determined by the length of the acoustic tubes 7a and 7b, but is enhanced mainly with a sound having a frequency that is four times the wavelength of the acoustic tubes 7a and 7b.
For example, when the lengths of the acoustic tube lengths 7a and 7b are set to 90 cm, the acoustic tube length is enhanced around 95 Hz. Note that the lengths of the two acoustic tubes 7a and 7b may be changed so that the respective resonance frequencies are different.
As described above, in the speaker device 1, sufficiently long resonance tubes 7 a and 7 b are arranged in parallel along the axial direction of the straight fluorescent tube 3 in the speaker cabinets 4 a and 4 b, thereby obtaining a sufficiently low resonance frequency. It is possible to play the bass sound like never before.
Further, in this case, since air moves near the tip openings of the acoustic tubes 7a and 7b, there is an advantage that if the amplifier 10 and the inverter circuit 8 are arranged in the vicinity thereof, these can be cooled.

FIG. 3 is a block diagram showing an electrical configuration of the illuminated speaker device of the present embodiment.
The receiving device 9 is configured to be able to receive an audio signal transmitted according to a DLNA (Digital Living Network Alliance) standard, for example, from a digital media server (DMS: Digital Media Server) which is a sound source device. DLNA refers to a specification for easily exchanging digital contents such as music / still images / moving pictures in a home network. The receiving device 9 is also configured to receive a command signal transmitted from a remote commander (not shown) in accordance with the ECHONET (Energy Conservation and Homecare Network) standard. Examples of the digital media server include a personal computer, a set top box, a digital camera and a video camera, and a multifunctional mobile phone.
The receiving device 9 controls the level of the amplifier 10 and the inverter circuit 8 based on the received command signal. The inverter circuit 8 performs lighting control of the straight tube fluorescent lamp 3 which is a lighting fixture based on the control of the receiving device 9.
The amplifier 10 amplifies the signal level of the audio signal input based on the control signal from the receiving device 9 and outputs it to the speakers 5a and 5b of the respective speaker cabinets 4a and 4b.

  In the present embodiment, the receiving device 9 receives a remote control signal, but a remote control receiving unit that receives a command signal from a remote commander (not shown) may be provided separately. Infrared rays can also be used for transmission to and from the remote commander. According to this configuration, even when the speaker device 1 is attached to a wall surface or the like, it is possible to easily construct a system because it is not necessary to route wiring for signal transmission. In this embodiment, the case where the audio signal is transmitted from the DMS according to the DLNA standard has been described as an example, but is only an example. For example, it is needless to say that the audio signal can be applied when transmitted according to a transmission rule other than the DLNA standard, or when transmitted via a wired line such as a power line.

It is the figure which showed the structure of the speaker apparatus with illumination which concerns on embodiment of this invention. It is the figure which showed typically the radiated sound radiated | emitted from a speaker. It is the block diagram which showed the electrical structure of the speaker apparatus with illumination of this Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Illuminated speaker apparatus, 2 ... Wooden panel, 3 ... Straight tube type fluorescent tube, 4a, 4b ... Speaker cabinet, 5a, 5b ... Speaker, 6a, 6b ... Diffuser, 7a, 7b ... Acoustic tube, 8 ... Inverter circuit , 9: Receiver, 10 ... Amplifier, 20 ... Wall surface

Claims (4)

Illumination means including a straight tube fluorescent tube;
Speakers respectively disposed on both sides in the axial direction of the straight tube fluorescent tube;
A speaker cabinet that supports each speaker;
A hollow tubular acoustic tube that is arranged in parallel in the axial direction of the straight tube fluorescent tube, and one end of which is supported by at least one of the speaker cabinets;
A speaker device with illumination, comprising: Receiving means for receiving a reproduction signal transmitted in a predetermined signal form;
Amplifying means for amplifying the signal level of the reproduction signal received by the receiving means,
The illuminated speaker device according to claim 1, wherein the reproduction signal amplified by the amplification unit is reproduced by the speaker.   3. The illuminated speaker device according to claim 1, wherein a radiation surface of the speaker is disposed perpendicular to an axial direction of the straight tube fluorescent tube and along an outer surface of the speaker cabinet. .   4. The illuminated speaker device according to claim 1, further comprising a diffusion member that diffuses sound radiated from the speaker in front of a radiation surface of the speaker. 5.

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