Speaker-integrated lighting device

Abstract

Provided is a speaker-integrated lighting device in which a speaker and a lighting device are integrated. The speaker-integrated lighting device comprises: i) a fixed cover unit applied to be inserted into a ceiling via an opening formed in the ceiling; ii) a speaker unit including a sound source inserted into the fixed cover unit, surrounding the sound source, and omnidirectionally propagating sound, generated from the sound source, toward a side surface thereof; and iii) a lighting unit positioned below the speaker unit and applied to tilt within a preset angle range. The speaker unit comprises: i) a sound emission frame surrounding the sound source at a side surface thereof and having a plurality of sound emission holes formed therein; and ii) a reflective plate reflecting downward-directed sound upward, and including an inclined surface connecting a lower edge of the side surface and a vertex located below the sound source.

Description

Integrated speaker lighting

[0001] The present invention relates to a speaker-integrated lighting device. More specifically, the present invention relates to a speaker-integrated lighting device that integrates a speaker and lighting.

[0002]

[0003] Lighting is attached to walls or ceilings, both indoors and outdoors, to provide light and illuminate the darkness. Beyond this function, lighting is also used as an element that shapes architectural space and as an accessory in interior architecture that complements the interior ambiance.

[0004] Meanwhile, in speakers, a diaphragm moves back and forth, pushing air through it. The diaphragm operates by receiving an analog signal from a sound source, generating pressure waves in the air to create sound waves. These sound waves travel through the air and reach our ears, where they are perceived as sound.

[0005] [Prior Art Literature]

[0006] [Patent Document]

[0007] (Patent Document 1) Korean Patent No. 1,711,418

[0008]

[0009] We aim to provide a speaker-integrated light that can radiate sound waves in a 360-degree omnidirectional manner.

[0010]

[0011] A speaker-integrated lighting according to one embodiment of the present invention comprises: i) a fixed cover unit adapted to be inserted into a ceiling through an opening formed in the ceiling; ii) a speaker unit including a sound source inserted into the fixed cover unit and surrounding the sound source to omnidirectionally propagate sound generated from the sound source to the side thereof; and iii) a lighting unit positioned below the speaker unit and adapted to tilt at a preset angle range. The speaker unit comprises: i) a sound emitting frame formed with a plurality of sound emitting holes while surrounding the sound source from the side; and ii) a reflector including an inclined surface that reflects downward sound among sounds upward and connects a lower edge of the side and a vertex positioned below the sound source.

[0012] The lighting unit may include: i) a lighting body having a hollow portion having a bottom formed in an upper portion thereof, spaced apart from a reflector, positioned below the reflector, and applied so as to be tiltable within a preset angle range; and ii) a light emitter fixed to a lower portion of the lighting body and emitting light. The speaker-integrated lighting may further include a hinge unit that extends long within the hollow portion, has one end formed as a fixed portion and fixed below the reflector, and has the other end formed as a ball-shaped hinge and fixed to the bottom. The lighting body may include a curved portion that surrounds the hollow portion and is convexly formed toward the reflector. The speaker unit may further include a curved groove formed at a lower portion thereof corresponding to the curved portion. The curved groove may form a surface of an imaginary sphere whose center is the center of the ball-shaped hinge.

[0013] The lighting body may further include a tilting support plate that is seated on the floor. A through hole through which the hinge unit passes may be formed at the center of the tilting support plate, and an insertion hole may be formed in the tilting support plate to connect the through hole and the exterior of the tilting support plate. The inner surface of the through hole may be formed as a curved surface whose inner diameter gradually narrows as it approaches the reflector, and the width of the insertion hole may be smaller than the diameter of the through hole. The hinge unit further includes a hinge rod connecting one end to the ball-shaped hinge, and the width of the insertion hole may be larger than the diameter of the hinge rod. Depending on the tilting of the lighting unit, the tilting of the lighting unit may be restricted from the time when the upper end of the through hole contacts the connecting point of the hinge rod and the ball-shaped hinge. The tilting angle range of the lighting unit may be 40° to 60°.

[0014] The light body may further include a ball inserted into the through hole. The ball-shaped hinge may be connected to the ball by surrounding the ball.

[0015]

[0016] The reflector can be modified to efficiently emit sound in a 360-degree, omnidirectional manner. The light can be freely tilted to brightly illuminate any desired location.

[0017]

[0018] FIG. 1 is a schematic perspective view of a speaker-integrated lighting unit according to a first embodiment of the present invention.

[0019] Fig. 2 is a schematic cross-sectional view of the speaker-integrated lighting of Fig. 1 taken along line II-II.

[0020] Figure 3 is a schematic partial exploded view of the speaker-integrated lighting of Figure 2.

[0021] Figure 4 is a schematic operating state diagram of a speaker-integrated lighting according to the first embodiment of the present invention.

[0022] Figure 5 is a schematic partial exploded view of a speaker-integrated lighting according to a second embodiment of the present invention.

[0023] Figure 6 is a schematic partial cross-sectional view of a speaker-integrated lighting according to an experimental example of the present invention and a comparative example of the prior art.

[0024] Figure 7 is a schematic sound pressure test graph according to the frequency of sound emitted from a speaker-integrated lighting according to an experimental example of the present invention and a comparative example of a conventional technology.

[0025]

[0026] Below, with reference to the attached drawings, embodiments of the present disclosure are described in detail so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In addition, in the drawings, parts irrelevant to the description are omitted for clarity of explanation, and similar parts are designated with similar reference numerals throughout the specification.

[0027] In the specification, when a part is said to "include" a certain component, this does not mean that other components are excluded, but rather that other components may be included, unless otherwise specifically stated. In this specification, expressions in the singular may be interpreted as either singular or plural, unless explicitly expressed as "one" or "single." As used herein, the term "applied" is interpreted to mean both a state prior to installation and a state installed for actual use.

[0028] In this specification, terms including ordinal numbers, such as "first" and "second," may be used to describe various components, but these components are not limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present disclosure, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

[0029] In the flowcharts described with reference to the drawings in this specification, the order of operations may be changed, several operations may be merged, some operations may be split, and certain operations may not be performed.

[0030] Fig. 1 schematically illustrates a speaker-integrated lighting (100) according to a first embodiment of the present invention. Fig. 1 (a) and Fig. 1 (b) each illustrate the operating state of the speaker-integrated lighting (100). The speaker-integrated lighting (100) of Fig. 1 (a) illustrates a state in which the lighting unit (30) faces directly downward, and the speaker-integrated lighting (100) of Fig. 1 (b) illustrates a state in which the lighting unit (30) is tilted. The structure of the speaker-integrated lighting (100) of Fig. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Accordingly, the speaker-integrated lighting (100) may be modified differently.

[0031] As illustrated in FIG. 1, the speaker-integrated lighting (100) includes a speaker unit (20) and a lighting unit (30). Although not illustrated in FIG. 1, a fixed cover unit (10) (illustrated in FIG. 2, the same applies hereinafter) is positioned above the speaker unit (20) and inserted into the ceiling (CE) through an opening (CE1) formed in the ceiling (CE). As a result, the speaker-integrated lighting (100) can be stably fixed to the ceiling (CE) using the fixed cover unit (10).

[0032] The speaker unit (20) includes a sound source (201) (illustrated in FIG. 2, the same applies hereinafter). The speaker unit (20) surrounds the sound source (201) and omnidirectionally transmits sound generated from the sound source to its side. In other words, the speaker unit (20) can emit sound in a 360° surround.

[0033] The lighting unit (30) is positioned below the speaker unit (20). As shown in (b) of Fig. 1, the lighting unit (30) can be tilted in a preset angle range (θ1). The tilting angle range (θ1) may be 40° to 60°. If the tilting angle range (θ1) is too small, the lighting unit (30) cannot be tilted to shine light at a desired location. In addition, the tilting angle range (θ1) cannot be too large due to the design structure of the speaker-integrated lighting (100). Therefore, the tilting angle range (θ1) is adjusted to the above-mentioned range.

[0034] As illustrated in Fig. 1, the speaker-integrated lighting (100) does not have a complex internal structure exposed to the outside for tilting the lighting unit (30). Therefore, the speaker-integrated lighting (100) has a decoratively attractive appearance, making it suitable as an interior decoration. Hereinafter, the internal structure of the speaker-integrated lighting (100) will be described in more detail with reference to Fig. 2.

[0035] Fig. 2 illustrates a schematic cross-sectional structure of the speaker-integrated lighting (100) of Fig. 1 taken along line II-II. The cross-sectional structure of the speaker-integrated lighting (100) of Fig. 2 is merely for illustrative purposes, and the present invention is not limited thereto. Accordingly, the cross-sectional structure of the speaker-integrated lighting (100) may be modified in various ways.

[0036] As illustrated in FIG. 2, the fixed cover unit (10) includes a fixed cover body (101), an upper cover (103), and an elastic fixing member (105). The fixed cover unit (10) may further include other components. For example, the fixed cover unit (10) includes a sound source (201), a light emitter (303), and wiring (not shown) that are electrically connected. The wiring may be inserted into the ceiling through the fixed cover unit (10) and connected to a power source, etc. Since such electrical connection state can be easily understood by a person having ordinary skill in the art to which the present invention pertains, a detailed description thereof will be omitted.

[0037] The fixed cover body (101) is formed in a hollow shape, so that a sound source (201) can be inserted therein. Elastic fixing members (105) are attached to both sides of the fixed cover body (101). When the speaker-integrated lighting (100) is fixed to the ceiling, the elastic fixing members (105) are folded upward and inserted into the opening (CE1) (shown in FIG. 1). In this case, the elastic fixing members (105) are brought into close contact with the inner surface of the ceiling by the restoring force of the elastic coil (not shown) included in the elastic fixing members (105), so that the speaker-integrated lighting (100) can be stably fixed to the ceiling.

[0038] The upper cover (103) is coupled to the fixed cover body (101) to seal the upper side of the fixed cover body (101). As a result, sound generated from the sound source (201) does not leak to the upper side of the fixed cover unit (10), so that vivid, omnidirectional surround sound can be obtained through the side of the speaker unit (0). In addition, since the fundamental frequency characteristics of the sound can be improved through the upper cover (103), sound with less distortion and that is easy to hear can be heard.

[0039] The speaker unit (20) includes a sound source (201), a sound emission frame (203), a reflector (205), and a curved groove (207). In addition, the speaker unit (20) may further include other components. The internal components of the speaker unit (20) are designed to have a gap between each other to suppress vibration noise, design resonance, and eliminate flickering due to reduced interference with the lighting unit (30). In particular, if the interior of the speaker unit (20) is too large compared to the sound source (201), the low-pitched sound is strong and a weak sound is produced, and if the interior of the speaker unit (20) is too small compared to the sound source (201), the high-pitched sound is strong and a tearing sound is produced. Therefore, the size of the speaker unit (20) is appropriately adjusted and stored in the fixed cover body (101).

[0040] The sound source (201) includes a sound source generating unit (2011) and a sound source transmitting unit (2013). In addition, the sound source (201) may further include other components. The sound source (201) protrudes from the speaker unit (20) and is embedded within the fixed cover unit (10). That is, the sound source (201) is embedded across both the fixed cover unit (10) and the sound emission frame (203). The sound source generating unit (2011) receives sound source power. The sound source power can be input wirelessly or by wire, and can also be input using its own sound source. Wireless sound source power can be input using Wi-Fi, Bluetooth, Zigbee, NFC, or infrared, and can be input through a smartphone or tablet, etc. In addition, sound source power can be input through a wire via a personal computer. The sound source transmitting unit (2013) amplifies the sound source transmitted in the form of an electric signal from the sound source generating unit (2011). To achieve this, the sound transmission unit (2013) includes a low-frequency woofer, a high-frequency tweeter, a mid-range driver, a crossover network, an enclosure, and an amplifier. The sound transmission unit (2013) utilizes these components to implement the entire sound spectrum. The crossover network delivers the correct frequency range to each specific driver, optimizing its performance. The amplifier amplifies the signal strength to emit sound. The frequency of the emitted sound can be adjusted up to 12.5 kHz.

[0041] The sound emitting frame (203) surrounds the sound source (201) from its sides. The outer side of the sound emitting frame (203) can be customized by covering it with speaker fabric. A plurality of sound emitting holes (2021) are formed in the sound emitting frame (203). As a result, sound emitted from the sound source (201) is emitted through the plurality of sound emitting holes (2021) in a 360° surround. In particular, the upper side of the sound source (201) is sealed by the upper cover (103), and the lower side of the sound source (201) is blocked by the reflector (205), so that sound is emitted only through the sound emitting holes (2021) on the sides, thereby obtaining sound of excellent quality. The reflector (205) will be described in more detail below.

[0042] The reflector (205) reflects sound directed downward, i.e., in the -z-axis direction, of the speaker unit (20) toward the upper side, i.e., in the +z-axis direction. The reflector (205) is manufactured from a hard and dense material to efficiently reflect sound. For example, the reflector (205) can be manufactured from acrylic or polycarbonate, which have excellent durability, light weight, and ease of molding. When manufacturing the speaker unit (20) using these materials, the reflector (205) can be integrally injection-molded together. The reflector (205) includes an inclined surface (2055) that connects the lower edge (2053) of the side of the speaker unit (20) and the vertex (2015). Since the vertex (2015) is located below the sound source (201), the vertex (2015) is located relatively closer to the sound source (201) than the lower edge (2053). As a result, the reflector (205) can have a conical shape.

[0043] The angle (θ2) formed by the inclined surface (2055) and the upper surface of the hollow portion (3011), i.e., the xy plane, may be 20° to 30°. If the angle (θ2) is too small, sounds may not be reproduced accurately in the high-end frequency band. In addition, the angle (θ2) cannot be too large due to the design structure of the speaker unit (20). Therefore, by adjusting the angle (θ2) within the aforementioned range, sounds in the audible frequency band are accurately reproduced, making the sound pleasant to listen to. Unlike the structure of the aforementioned reflection plate (205), when the portion corresponding to the sound source (201) is manufactured flat, the distance from the sound source (201) increases, and since there is no sharp part, the sound pressure in the high-end frequency band does not appear significantly. As a result, sounds in the audible frequency band may not be reproduced accurately. Therefore, by solving this problem through the structure of the aforementioned reflection plate (205), it is possible to design sound stably, especially at 12.5 kHz.

[0044] As illustrated in Fig. 2, the lighting unit (30) is positioned below the speaker unit (20), more specifically, below the reflector (205) and spaced apart from the reflector (205). The lighting unit (30) includes a lighting body (301) and a light emitter (303). The lighting unit (30) is an open reflector-type downlight, and since the lighting body (301) is made of aluminum, it has excellent heat dissipation effect.

[0045] A hollow portion (3011) is formed in the upper portion of the lighting body (301). The hollow portion (3011) has a bottom (3011a). A light emitter (303) is fixed to the lower portion of the lighting body (301) and emits light. Any component may be used for the light emitter (303) as long as it can emit light. For example, the light emitter (303) may be an LED. Although not shown in FIG. 2, the light emitter (303) may be connected to an external power source and supplied with power. Since this operation process can be easily understood by those skilled in the art to which the present invention pertains, a detailed description thereof will be omitted.

[0046] Meanwhile, the curved portion (3013) is formed convexly toward the reflector (205) while surrounding the hollow portion (3011). That is, the curved portion (3013) is formed in a shape that embraces the hollow portion (3011). Meanwhile, a curved groove (207) is formed at the lower end of the speaker unit (20) corresponding to the curved portion (3013). The curved groove (207) may be formed to face the curved portion (3013) and be spaced apart from each other. When the lighting unit (30) rotates, i.e., tilts, the curved portion (3013) can rotate left and right along the curved groove (207) and move smoothly without interference. Therefore, the lighting unit (30) can tilt within a preset angle range based on the z-axis direction. The lighting unit (30) can be tilted in a 360° range in the lateral direction, i.e., the x-axis direction. This will be described in more detail through the hinge unit (40).

[0047] As illustrated in FIG. 2, the hinge unit (40) includes a fixing portion (403) and a ball-shaped hinge (405). The fixing portion (403) is one end of the hinge unit (40) and is fixed to the bottom of the reflector (205). The ball-shaped hinge (405) is the other end of the hinge unit (40) and is fixed to the floor (3011a). The lighting unit (30) can freely change the lighting angle by tilting forward, backward, left, and right around the hinge unit (40) as an axis. Since the hinge unit (40) is not visible from the outside, the speaker-integrated lighting (100) has excellent aesthetic appeal.

[0048] The curved groove (207) can form the surface of an imaginary sphere whose center is the center (c) of the ball-shaped hinge (405). That is, as illustrated by the dotted line in FIG. 2, the distance from the center (c) to the curved groove (207) is the same in all directions. This satisfies the minimum condition for the lighting unit (30) to tilt back, forth, left, and right without interference. As a result, the lighting unit (30) can be moved stably. In addition, for this purpose, the ball-shaped hinge (405) can also be formed in a spherical shape. The tilting support plate (3015) is positioned to surround the ball-shaped hinge (405) by being placed on the floor (3011a). The tilting support plate (3015) can be firmly fixed to the floor (3011a) using a bolt or the like. The tilting support plate (3015) tilts along with the tilting of the lighting unit (30), but is restricted in its tilting by a ball-shaped hinge (405) and thus has only a certain degree of freedom. Accordingly, the lighting unit (30) can tilt forward, backward, left, and right only within a preset range. This will be described in more detail with reference to FIGS. 3 and 4.

[0049] Fig. 3 schematically illustrates a partially disassembled version of the speaker-integrated lighting (100) of Fig. 2. The enlarged circle in Fig. 3 enlarges the joint structure of the hinge unit (40) and the tilting support plate (3015). The partially disassembled version of the speaker-integrated lighting (100) of Fig. 3 is merely intended to illustrate the present invention, and the present invention is not limited thereto. Accordingly, the partially disassembled version of the speaker-integrated lighting (100) may be modified in various ways.

[0050] As illustrated in FIG. 3, the hinge unit (40) includes a hinge rod (401) that interconnects the fixed portion (403) and the ball-shaped hinge (405). The hinge rod (401) extends in the z-axis direction within the hollow portion (3011). The hinge rod (401) may be formed in a hollow shape.

[0051] As illustrated in the enlarged circle of FIG. 3, a through hole (3015a) and an insertion hole (3015b) are formed in the tilting support plate (3015) coupled with the hinge unit (40). The through hole (3015a) passes through the center of the tilting support plate (3015). The insertion hole (3015b) connects the through hole (3015a) and the outside of the tilting support plate (3015). The hinge unit (40) passes through the through hole (3015a), and the ball-shaped hinge (405) is engaged with the through hole (3015a). Since the diameter of the fixing portion (403) is larger than the diameter (d3015a) of the through hole (3015a), the tilting support plate (3015) cannot be directly inserted through the top of the hinge unit (40). In addition, since the ball-shaped hinge (405) engages the through hole (3015a), the tilting support plate (3015) cannot be directly inserted through the bottom of the hinge unit (40). Therefore, the hinge unit (40) is inserted through an insertion hole (3015b) opened on the side of the tilting support plate (3015) to be coupled with the tilting support plate (3015). Therefore, the width (w3015b) of the insertion hole (3015b) is smaller than the diameter (d401) of the hinge rod (401). That is, the hinge unit (40) can be coupled to the tilting support plate (3015) by first inserting the hinge rod (401) into the insertion hole (3015b).

[0052] Meanwhile, an O-ring (not shown) may be attached around the ball-shaped hinge (405). That is, an O-ring is attached around the ball-shaped hinge (405) to increase the fixing force and rotational sensitivity of the ball-shaped hinge (405). The O-ring may be inserted and fixed into a groove (not shown) formed in a ring shape at the bottom of the tilting support plate (3015).

[0053] As illustrated by the dotted line circle in FIG. 3, the inner surface of the through hole (3015a) is formed as a curved surface whose inner diameter gradually narrows as it approaches the reflector (205) (illustrated in FIG. 1). Therefore, the ball-shaped hinge (305) is fixed to the through hole (3015a) by connecting it to the through hole (3015a) from below the tilting support plate (3015). In addition, since the width (w3015b) of the insertion hole (3015b) is smaller than the diameter (d3015a) of the through hole (3015a), there is no possibility that the ball-shaped hinge (305) will fall out from the through hole (3015a) to the insertion hole (3015b). Furthermore, the width (w3015b) of the insertion hole (3015b) is smaller than the outer diameter of the ball-shaped hinge (405).

[0054] Fig. 4 schematically illustrates the operating state of a speaker-integrated lighting (100) according to the first embodiment of the present invention. More specifically, Fig. 4 (a) illustrates a state in which the lighting unit (30) is tilted to the left, and Fig. 4 (b) illustrates a state in which the lighting unit (30) is tilted to the right. The operating state of the speaker-integrated lighting (100) of Fig. 4 is merely for illustrative purposes, and the present invention is not limited thereto. Accordingly, the operating state of the speaker-integrated lighting (100) may be modified differently.

[0055] As shown in (a) of FIG. 4, when the lighting unit (30) tilts clockwise, the hinge unit (40) is fixed, so that the tilting support plate (3015) rotates around the ball-shaped hinge (405) fixed by the hinge unit (40). In this case, when the upper end (3015a1) of the through hole (3015a) contacts the connection point (407) of the hinge rod (401) and the ball-shaped hinge (405), the tilting support plate (3015) is blocked by the hinge unit (40) and can no longer rotate. As a result, the tilting of the lighting unit (30) is blocked, restricting its operation.

[0056] Fig. 4 (b) illustrates a case where the lighting unit (30) tilts counterclockwise. The lighting unit (30) of Fig. 4 (b) also has its tilting limited in the same manner as the lighting unit (30) of Fig. 4 (a). The operating state of the lighting unit (30) of Fig. 4 (b) is identical to that of the lighting unit (30) of Fig. 4 (a) except that it is symmetrical left and right, as described above. Therefore, a detailed description of the operating state is omitted.

[0057] Fig. 5 schematically illustrates a partially exploded structure of a speaker-integrated lighting (200) according to a second embodiment of the present invention. The partially exploded structure of the speaker-integrated lighting (200) of Fig. 5 is merely for illustrating the present invention, and the present invention is not limited thereto. Accordingly, the partially exploded structure of the speaker-integrated lighting (200) may be modified differently. Meanwhile, since the structure of the speaker-integrated lighting (200) of Fig. 5 is similar to the structure of the speaker-integrated lighting (100) of Fig. 3, the same reference numerals are used for the same parts, and a detailed description thereof is omitted.

[0058] As illustrated in Fig. 5, a ball (427) can be installed in a lighting unit (30) and coupled with a ball-shaped hinge (425). The ball (427) is inserted into a through-hole of a tilting support plate (3015). Since the ball-shaped hinge (425) has a ring shape, it surrounds the ball (427) and is coupled with the ball (427) before being covered by the tilting support plate (3015). Therefore, the hinge unit (42) can be fixed more stably.

[0059]

[0060] The present invention is described in detail below through experimental examples. These experimental examples are intended solely to illustrate the present invention and are not intended to limit the present invention.

[0061] Experimental example

[0062] An experiment was conducted using a speaker-integrated lighting having the same structure as Fig. 1. That is, a speaker-integrated lighting including a pointed reflector was used. The left side of Fig. 6 schematically shows a partial cross-sectional structure of a speaker-integrated lighting tested according to an experimental example of the present invention. The upper part of the reflector on the left side of Fig. 6 is indicated by a red rectangle. As shown in Fig. 6, the pointed upper part of the reflector can be confirmed. In addition, the sound pressure according to the frequency change of the sound emitted from the speaker-integrated lighting was checked. Since this experimental process can be easily understood by those skilled in the art to which the present invention pertains, a detailed description thereof is omitted.

[0063] Comparative example

[0064] An experiment was conducted using a speaker-integrated lighting fixture equipped with a flat reflector. The right side of Fig. 6 schematically illustrates a partial cross-section of a speaker-integrated lighting fixture tested according to a comparative example of the prior art. The upper portion of the reflector is indicated by a red rectangle on the right side of Fig. 6. As shown in Fig. 6, the flat upper portion of the reflector can be confirmed. The remaining experimental procedures were identical to those of the experimental example described above.

[0065] Experimental results

[0066] The sound pressure according to the frequency of the sound emitted from the speaker-integrated lighting according to the experimental example described above was measured. In addition, the sound pressure according to the frequency of the sound emitted from the speaker-integrated lighting according to the comparative example described above was also measured.

[0067] Fig. 7 schematically illustrates a sound pressure test graph according to the frequency of sound emitted from a speaker-integrated lighting device according to an experimental example of the present invention and a comparative example of the prior art. In Fig. 7, the experimental example is indicated by a thick solid line, and the comparative example is indicated by a thin solid line.

[0068] The dotted line in Figure 7 represents the high-end frequency band, the widest within the audible frequency range. The higher or lower the sound pressure changes in this region, the more accurately the sound is reproduced.

[0069] As shown in Fig. 7, it was confirmed that the high and low of the sound pressure were distinct in the experimental example, unlike the comparative example. In particular, the high and low of the sound pressure in the 12.5 kHz band were also distinct. This means that when the speaker-integrated lighting having the reflector structure on the left side of Fig. 6 described above was used, it was confirmed that the sound was reproduced relatively accurately in the high-end frequency band, so that the sound was less distorted and was pleasant to listen to. In contrast, the comparative example had relatively more distorted sound, and it was somewhat uncomfortable to listen to the sound.

[0070] Although the embodiments of the present disclosure have been described in detail above, the scope of the present disclosure is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concepts of the present disclosure defined in the following claims also fall within the scope of the present disclosure.

[0071] [Explanation of symbols]

[0072] 10. Fixed cover unit

[0073] 100. Integrated speaker lighting

[0074] 101. Fixed cover body

[0075] 103. Top cover

[0076] 105. Elastic fixation

[0077] 20. Speaker unit

[0078] 201. Sound source

[0079] 2011. Sound source generation unit

[0080] 2013. Sound source transmission department

[0081] 203. Acoustic emission frame

[0082] 2031. Acoustic emitters

[0083] 205. Reflector

[0084] 2051. Peak

[0085] 2053. Bottom edge

[0086] 2055. Slope

[0087] 207. Curved groove

[0088] 30. Lighting unit

[0089] 301. Lighting body

[0090] 303. Light emitter

[0091] 3011. Ministry of Public Administration and Security

[0092] 3011a. Floor

[0093] 3013. Curved surface

[0094] 3015. Tilting support plate

[0095] 3015a. Through hole

[0096] 3015a1. Top

[0097] 3015b. Insert hole

[0098] 40. Hinge unit

[0099] 401. Hinge rod

[0100] 403. Fixed part

[0101] 405, 425. Ball hinge

[0102] 407. Adultery

[0103] 427. Ball

[0104] c. center

[0105] CE. Ceiling

[0106] CE1. Opening

Claims

1. A fixed cover unit applied to be inserted into the ceiling through an opening formed in the ceiling; A speaker unit that includes a sound source inserted into the fixed cover unit and surrounds the sound source while omnidirectionally transmitting sound generated from the sound source to the side, and A lighting unit is positioned below the speaker unit and is applied to tilt at a preset angle range, The above speaker unit, An acoustic emission frame having a plurality of acoustic emission holes formed while surrounding the sound source from the side, and A speaker-integrated light having a reflector that reflects downward sound from the above sound upward and includes a sloped surface connecting the lower edge of the side and a vertex located below the sound source.

2. In paragraph 1, The above lighting unit, A lighting body having a hollow portion formed on the upper portion thereof and positioned below the reflector, spaced apart from the reflector, and applied so as to be tiltable within a preset angle range, and A speaker-integrated light including a light emitter fixed to the lower part of the above lighting body and emitting light.

3. In paragraph 2, The speaker-integrated lighting further includes a hinge unit that extends long within the hollow portion, one end of which is formed as a fixed part and fixed below the reflector, and the other end of which is formed as a ball-shaped hinge and fixed to the floor.

4. In paragraph 3, The above lighting body includes a curved portion formed convexly toward the reflector while surrounding the hollow portion, A speaker-integrated lighting device wherein the above speaker unit further includes a curved groove formed at the lower portion corresponding to the curved portion.

5. In paragraph 4, The above curved groove is a speaker-integrated lighting device that forms the surface of an imaginary sphere with the center of the ball-shaped hinge as its center.

6. In paragraph 3, The above lighting body further includes a tilting support plate that is mounted on the floor, A speaker-integrated lighting device in which a through hole through which the hinge unit passes is formed at the center of the tilting support plate, and an insertion hole is formed in the tilting support plate to connect the through hole and the outside of the tilting support plate.

7. In paragraph 6, A speaker-integrated lighting device in which the inner surface of the above-mentioned through hole is formed into a curved surface whose inner diameter gradually narrows as it approaches the reflector, and the width of the insertion hole is smaller than the diameter of the above-mentioned through hole.

8. In paragraph 6, A speaker-integrated lighting device wherein the hinge unit further includes a hinge rod connecting the end and the ball-shaped hinge, and the width of the insertion hole is larger than the diameter of the hinge rod.

9. In paragraph 8, Depending on the tilting of the lighting unit, the tilting of the lighting unit is restricted from the time the upper end of the through hole comes into contact with the connecting point of the hinge rod and the ball-shaped hinge. A speaker-integrated lighting unit having a tilting angle range of 40° to 60°.

10. In paragraph 6, A speaker-integrated lighting device in which the above lighting body further includes a ball inserted into the through hole, and the ball-shaped hinge surrounds the ball and is combined with the ball.

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