JP2002202739A - Illuminator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illuminator capable of illuminating a wide area to be illuminated with high brightness, using an LED light source. SOLUTION: In an illumination lamp A, LED light source bodies 2 are arranged at open ends 1b of a transparent or semi-transparent tubular light transmitting member 1. The light generated in the axial direction S of the light- transmitting member 1 is irregularly reflected at transparent or semi-transparent projection part forming bodies 4 forming strip-shaped plural projection parts 4a at the inner peripheral face of the light transmitting member 1, so as to illuminate a light extracting face 1a of the light-transmitting member 1. Furthermore, a reflector is arranged at the rear side of the illumination lamp A, and the light irregularly reflected at the projection part forming bodies 4 is further intensified by the reflector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device using a novel illuminating lamp using an LED element (light emitting diode) as a light source.

[0002]

2. Description of the Related Art The largest use of LED light sources is for pilot lamps. Unlike ordinary filament lamps, this pilot lamp is mechanically strong and has a long service life with no bulb breakage due to filament breakage, requires little maintenance, and has high brightness and energy conversion efficiency. (Direct conversion between electricity and light) and high power consumption. Therefore, conventionally, a lamp using an LED light source body has been used as a lighting device mainly for outdoor night lighting, such as a road sign and various guide boards, by utilizing its characteristics. Further, as a lighting device for the same purpose, a lighting device using a fluorescent lamp is widely used because it has a longer life than a bulb using a filament.

[0003]

The LED light source has the advantages as described above. However, since the LED light source has a strong directivity or straightness due to its nature, it is difficult to use the LED light source in a lighting device having a wide illumination area. There is a disadvantage in that the backlight, which is a body, becomes local, the illuminance in the peripheral portion is extremely reduced, and the illumination area becomes uneven. To improve this, it is conceivable to install more LED light sources, but there is a problem that the cost of the entire device is increased and the power consumption is increased.

[0004] On the other hand, the fluorescent lamp has the advantage of a longer life than the light bulb using a filament, but the replacement of the fluorescent lamp is always necessary. Is a large part of the cost of equipment maintenance. In the case of fluorescent lamps, since the length of the tube is determined, there is a problem that the installation location is also restricted, and there is a danger that gas will be generated from the inside when it is damaged, and when it is disposed of as garbage. There is still a problem in the processing.

The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that the directivity of the high-brightness L
Using an ED as a light source, an illumination lamp capable of effectively illuminating the advantages of the ED and capable of uniformly illuminating a wide illumination area with high brightness has been completed.
00-13543.

In the lighting device of the prior application, an LED light source is disposed at an end of the cylindrical light transmitting member, and the light is transmitted from the light source to the internal space of the light transmitting member along the axial direction thereof. When light is generated, the light impinges on the protrusion of the protrusion forming body provided on the inner peripheral surface of the light transmission member and is irregularly reflected, whereby the light is more uniformly illuminated on the light extraction surface of the light transmission member. It is provided as light and exhibits an excellent lighting effect. However, the illuminance of the light emitted from the light extraction surface of the cylindrical light transmission member decreases as the distance from the portion where the LED light source body is present, and there is a problem that this appears as a difference in brightness. The phenomenon is that the brightness of the light is two times the distance from the light source.
This is due to the law of light, which is inversely proportional to the power.

SUMMARY OF THE INVENTION It is a main object of the present invention to provide a lighting apparatus which can solve the above-mentioned drawbacks and can illuminate a wide illumination area with high luminance.

[0008]

In order to achieve the above object, a lighting device according to the present invention has a cylindrical shape with one end or both ends open along the axial direction, and at least a part of the outer peripheral surface is transparent or semi-finished. A light transmitting member that forms a transparent light extraction surface; and a light transmitting member that is disposed at the open end, both ends, or an intermediate portion of the light transmitting member, and generates light having directivity along an axial direction in an internal space of the light transmitting member. An LED light source body, which is located on the inner peripheral surface of the light transmitting member, receives light from the LED light source body, and irregularly reflects the light, thereby giving a transparent or semi-transparent light to the light extraction surface of the light transmitting member as irradiation light. The gist of the invention is that the illumination lamp is composed of an illumination lamp including a transparent projection forming body and a reflector disposed on the rear side of the illumination lamp.

In the lighting device of the present invention, an LED light source is disposed at an end of a cylindrical light transmitting member, and light is transmitted from the LED light source into an internal space of the light transmitting member along an axial direction thereof. When the light is generated, the light hits the projection of the projection forming body provided on the inner peripheral surface of the light transmitting member and is irregularly reflected, whereby
The light is applied to the light extraction surface of the light transmission member as more uniform illumination light, and exhibits an excellent illumination effect. In addition, the light irregularly reflected by the protrusion forming body in the cylindrical light transmitting member is further increased by the reflector, and is concentrated or accumulated in the protrusion forming body to illuminate the outer peripheral surface of the light transmitting member. Therefore, the above-described difference in light intensity is eliminated, and the effect of uniformly illuminating a wide illumination area with high luminance can be obtained.

[0010] As the protrusion forming member provided on the inner peripheral surface of the cylindrical light transmitting member, a plurality of protrusions which are spaced from each other in the axial direction and have a band shape in the lateral direction are preferable. is there. Further, the protrusion forming body may have a continuous shape in a spiral shape at a required pitch.

Further, in the present invention, the projection-forming body is formed by using a transparent or translucent silicone rubber, so that the projection-forming body can be easily adhered to the inner peripheral surface of the light transmitting member by its adhesiveness. can do.

Further, in the present invention, the inner peripheral surface of the light transmitting member is formed into a fine uneven rough surface by a mechanical processing, and this can function as the protrusion forming body.

[0013] Furthermore, by molding on one side, 4
A transparent or translucent sheet member formed by forming the ridges of the pyramid in a vertical / horizontal parallel, by inserting the ridge into a cylindrical shape inside and inserting the inside into the cylindrical light transmitting member. ,
This can function as the protrusion forming body.

Further, according to the present invention, an opening is formed in a part of the peripheral surface of the cylindrical light transmitting member, and the LE is formed from the opening.
The D light source body can be inserted and arranged in the internal space of the light transmitting member. According to this, the length of the cylindrical light transmitting member is eliminated, and a long light transmitting member can be obtained.

Further, in the present invention, by providing a reflecting mirror at a portion where the LED light source body is provided, the light irregularly reflected at the projection forming member is reflected again by the reflecting mirror, and the light diffusion is further remarkably made. The application of the illumination light to the extraction surface can be made more uniform.

In the above configuration, the number of LED light sources provided on the cylindrical light transmitting member is not limited to one, and for example, blue, green, and red LED light sources may have a required central angle. Illumination having various colors can be created by arranging them at sites and selectively lighting them.

In the present invention, as a reflector disposed on the rear side of the illumination lamp, for example, the light irradiated behind the illumination lamp is reflected obliquely forward and left and right, and the central band between the illumination lamps of the light transmitting member is adjusted. A first reflector that projects in a V-shape toward the left and right of the illumination lamp so as to irradiate the light; and a light that is continuous with both ends of the V-shaped first reflector and that is illuminated diagonally behind the illumination lamp. And a second reflector for irradiating a wide band including the central band between the illumination lamps of the light-transmitting member and a band immediately below the illumination lamp, and connected to a tip of the second reflector,
A reflector comprising: a third reflector that receives and reflects lateral irradiation light of another illumination lamp including an adjacent illumination lamp and irradiates a band from a central band between the illumination lamps of the light-transmitting member to a band immediately below the illumination lamp. Is mentioned. The lighting device using the reflector is suitable for lighting a large advertising signboard in which a plurality of lighting lamps are arranged in parallel. According to this, it is possible to illuminate a wide illumination area of the translucent member forming the advertisement display board with high illuminance without creating a lamp image.

Further, as the reflector, a bowl-shaped reflector that projects forward of the lamp from the rear side of the illumination lamp may be used. It is suitable for a sign lamp and the like.

Still further, the reflector may be a concentric arc directly superimposed on the outer peripheral surface on the rear side of the cylindrical light transmitting member forming the illumination lamp.
The lighting device using the reflector is suitable for, for example, a guide light installed in a building.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION
It is shown in FIGS. In the figure, an illumination lamp A has a light transmitting member 1 having a cylindrical shape and an outer peripheral surface 1a constituting a transparent or translucent light extraction surface, and an axial direction (axial line S) of the cylindrical light transmitting member 1. A) a white LED light source body 2 arranged at an open end 1 b along the inner side of the light transmitting member 1 to generate light having directivity along an axial direction in the internal space 3 of the light transmitting member 1;
A transparent or translucent projection-forming body formed on an inner peripheral surface 1c of the light transmission member 1 with projections 4a projecting radially toward the internal space 3 of the light transmission member 1. 4 and the reflector B ₁ is disposed behind the illumination lamp A.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a lighting device according to the present invention. FIG. 1 shows a principle configuration in which the size is partially exaggerated in order to explain an illumination mode of an illumination lamp constituting the illumination device of the present invention. In the figure, A is an illumination lamp, 1 is a light transmitting member having a cylindrical shape and an outer peripheral surface 1a of which is a transparent or translucent light extraction surface, and 2 is an axis of the cylindrical light transmitting member 1. A white LED light source body that is disposed at the open end 1b along the direction (the axis S) and generates light having directivity along the axial direction in the internal space 3 of the light transmitting member 1;
Is a transparent or translucent protrusion-formed body formed in a state in which protrusions 4a protruding in the radial direction toward the internal space 3 of the light transmitting member 1 are scattered on the inner peripheral surface 1c. The protrusion 4
a is slightly exaggerated for the sake of explanation in FIG. 1, but in practice, the height of the protrusion 4 a is 2.5 to 3.0 mm.
This dimension does not depend on the diameter of the light transmitting member 1.

The material of the light transmitting member 1 is desirably glass or plastic, for example, polycarbonate excellent in transparency, heat resistance and cold resistance. On the other hand, the protrusion forming body 4 is preferably made of silicone rubber, but is not limited thereto. Silicone rubber is applied to the inner peripheral surface 1c of the light transmitting member 1 by a suitable mechanical means so as to form a band-shaped ridge 4a at predetermined intervals in the axial direction as shown in the figure. For example, the self-adhesive property allows the projections 4a to be attached to the inner peripheral surface 1c of the light transmitting member 1 and maintained in a hardened state in a state of being scattered on the inner peripheral surface 1c. In addition, silicone rubber is transparent or translucent, has a high light transmittance, and has an effect of irregularly reflecting light on the surface. Therefore, silicone rubber is most desirable for exhibiting the illumination effect of the illumination lamp.

In the above configuration, the light emitted from the LED light source 2 travels in the internal space 3 of the light transmitting member 1 along the axial direction (axis S) with a predetermined angle range (for example, 20 degrees), as shown in the figure. At the projections 4a, a part of the surface of the projections 4a is irregularly reflected and impinges on the adjacent projections 4a and intersects with each other. Light is concentrated or accumulated around each projection 4a. The entire outer peripheral surface 1a that forms the light extraction surface of the light transmitting member 1 is illuminated through the protrusion 4a. For this reason, the light extraction surface of the light transmitting member (the outer peripheral surface 1)
In a), the entire light extraction surface is illuminated almost uniformly and brightly by the light despite the LED light source 2 having directivity. Therefore, the illumination lamp having the above-described configuration can be used as an illumination lamp instead of a fluorescent lamp, and by arranging a translucent display plate having a light transmissive property outside the illumination lamp, it can function as a backlight thereof. .

As shown in FIG. 1, the protrusions 4a formed by the protrusion forming body 4 are formed in a band shape over the entire inner peripheral surface 1c at predetermined intervals in the axial direction of the light transmitting member 1 and in the lateral direction. It is most desirable to use a modified ridge structure because it is easy to manufacture and has an excellent lighting effect. However, the protrusion 4a is, for example,
Other shapes such as a configuration in which the light transmitting member 1 is disposed at intervals on the inner peripheral surface 1c of the light transmitting member 1 are also possible.

FIG. 2 and FIG. 3 are general sectional views of the illumination lamp A constituting the present invention shown in principle in FIG. 1 and embodying the present invention. Is attached. That is, in the illumination lamp shown in FIGS. 2 and 3, the LED light sources 2 are arranged at both open ends of the cylindrical light transmitting member 1, respectively, and the cap 5 is used to connect the LED light sources 2 to each end of the light transmitting member 1. Be attached. As shown in FIG. 3, each LED light source 2 is arranged so as to occupy the center of the circle of the cylindrical light transmitting member 1. The protrusion forming body 4 and the protrusion 4a formed thereby are the same as those in FIG.

A reflecting mirror 6 is provided inside each cap 5.
Is arranged. Each reflecting mirror 6 is in a state facing the internal space 3 at the end of the light transmitting member 1. Therefore,
When the light emitted from each LED light source 2 is irregularly reflected at each projection 4a in the internal space 3, the light incident on the reflecting mirror 6 is reflected here, so that the irregular reflection of light is further increased, and light is extracted accordingly. This enhances the lighting effect on the surface 1a.

The power supply for the LED light source 2 may be small, so that a solar cell can be used as the power supply. In the case of an AC power supply, a converter for DC (for example, an inverter) may be used.

FIGS. 4 and 5 show a preferred embodiment in which the present invention is applied to a large-sized lighting device such as an advertising signboard. In the figure, A is lighting lamps arranged in parallel, B ₁ is a reflector which is arranged on the rear side of the illumination lamp, C is milky white acrylic resin translucent for billboard display provided in front of the illumination lamp It is a member. The reflector B ₁ represents, Utility Model Registration No. 25055
The reflector described in JP-A-09-0909 is used.

That is, the reflector B ₁ reflects the light emitted behind the illumination lamp A diagonally forward and leftward, and
A first reflector 7 extending in a V-shape toward the left and right rear of the illumination lamp so as to irradiate the center band between the lamps;
The light which is continuous to both ends of the first reflection plate 7 in the shape of a letter and reflects the light emitted obliquely rearward of the illumination lamp and irradiates a wide band including the central band between the illumination lamps of the light transmitting member C and the band immediately below the illumination lamp. A second reflector 8 connected to the tip of the second reflector, receives the lateral illumination light of another illumination lamp including an adjacent illumination lamp, and receives light from a central band between the lamps of the light transmitting member C directly below the illumination lamp. Third to irradiate a wide band up to the band
It is composed of a reflection plate 9.

The angle θ formed by the V-shaped first reflector 7
_1, the angle theta ₂ which the second reflector 8 is overhanging with respect to the first reflector 7, the angle theta ₃ third reflector 9 against the second reflector 8 overhangs are obtuse in the example shown These angles are determined by design based on the distance between the illumination lamps A and the distance between the illumination lamps and the light transmitting member C.

As described above, when the reflector B ₁ is disposed on the rear side of the illumination lamp A, the protrusion forming member 4 in the light transmitting member 1 is formed.
The light irregularly reflected by the light source is further increased by the reflector, so that there is no difference in light and dark generated in the axial direction of the cylindrical illumination lamp A using the LED light source 2, and the cylindrical light transmitting member 1
Can increase the surface brightness (candela). In particular according to the use of the reflector B ₁ consisting of the first reflector through third reflector, less use the number of lighting lamps A is the surface illuminance of the display translucent member C having a large area (lux)
Can be greatly increased.

FIG. 6 shows an embodiment in which the present invention is applied to a traffic light. In the figure, A is lighting lamps arranged in parallel, B ₂ is a reflector which is arranged on the rear side of the illumination lamp,
C is a translucent member made of a milky-white acrylic resin for display provided in front of the illumination lamp, and D is a translucent member made of a milky-white acrylic resin having an uneven surface.

The reflector B ₂ has a bowl-like shape protruding from the rear side of the illumination lamp A to the front of the lamp. Both end edges of the reflector B ₂ are in contact with the light-diffusing translucent member D, and the light between the adjacent illumination lamps is provided. Are divided independently so that they do not interfere with each other.

Even if the LED light sources are made by the same manufacturing method, there may be a difference in luminance. For example, when they are used in a parallel arrangement, the irradiation band of an illumination lamp having a high-luminance LED light source is used. Low brightness LE with a part of
The illuminance is remarkably increased in a portion overlapping the irradiation band of the illumination lamp having the D light source body, and a difference in brightness is generated between the illumination band on the low luminance side excluding the high illuminance portion. It appears as unevenness in the surface illuminance (look) of C. This is ineligible as a road sign light.

However, as shown in FIG. 6, by dividing the irradiation areas of the adjacent illumination lamps independently by the reflector B ₂ and the light-diffusing translucent member D so as not to interfere with each other, the above-mentioned problem is solved. Will be resolved.

Also in the embodiment in which the reflector B ₂ is provided, similarly to FIG. 5, the effect of eliminating the difference in lightness and darkness occurring in the axial direction of the illumination lamp A and increasing the surface illuminance of the translucent member C for display. Can be obtained, but enlargement of the irradiation area with respect to the translucent member for display is limited by the shape of the reflector.

FIG. 7 shows an example in which the present invention is applied to a guide light provided in a corridor or the like of a building. In the figure, reference numeral A denotes an illumination lamp, of which a reflecting plate B ₃ concentric with the light transmitting member 1 is provided on the outer peripheral surface of the cylindrical light transmitting member 1 forming a central angle of about 90 degrees. Are directly superimposed and fixed to the light transmitting member 1 by an adhesive tape (not shown) or the like.

In the lighting device having the above-described structure, similarly to FIGS. 4 and 6, there is no difference in brightness between the light and the dark in the axial direction of the lighting lamp, and the brightness of the outer peripheral surface of the cylindrical light transmitting member 1 is increased. The effect is obtained. In this illumination device, the illumination area from the illumination lamp is limited by the shape of the reflector, but is optimal because it can be configured as a small guide light or the like in a building.
In this case, the illumination lamp A may be used in an exposed state as it is, or may be housed in a box having a light transmitting member on the front surface. In addition, since the LED light source has a high operating speed, there is an advantage that an illumination lamp arranged in series can be used as a guide light of a type that blinks sequentially.

Next, the data of a luminance measurement experiment performed on the lighting device according to the present invention will be described below. Illumination lamps shown in FIGS. 8A and 8B were used as test specimens. The illumination lamp A shown in FIGS. 8A and 8B has a length L of 150 mm and an outer diameter R of 21 m as the light transmitting member 1.
FIG. 8 (a) has no reflector, and FIG. 8 (b) has a reflector on the outer peripheral surface of the illumination lamp A as shown in FIG. Reflector B combined
₃ is used. LEDs provided at both ends of illumination lamp A
The light source is a white LED (0.07 W).

A predetermined DC voltage is applied to the LED light sources at both ends of the illumination lamp A, and the left end P ₁ , right end P ₂ , and center P ₃ of the cylindrical light transmitting member having a length L are applied. Surface luminance cd
With a luminance meter (Minolta LS-110, No. 7842300)
The results measured in 3) are shown in Table 1 below.

[0041]

[Table 1]

As shown in Table 1 above, the one in which a reflector is used in combination with the tubular illumination lamp is compared with an illumination lamp without a reflector, and the two ends P ₁ , P ₂ and the center P ₃ of the lamp are not used. It was confirmed that the surface luminance was increased, and a large increase rate of 90% was obtained in total.

Therefore, even in a lighting device having a configuration in which the translucent member for display is disposed in front of the illumination lamp, the illuminance (look) of the translucent member for display can be significantly increased as compared with the case without the reflector. It becomes possible.

Next, the increase in the surface luminance of the illumination lamp is as follows.
The fact that the power consumption is directly reduced will be described based on the following embodiments. In the case of a road sign light in which a light source body is housed in an equilateral triangle box having a side of 70 cm, a light transmitting member for display of an equilateral triangle (a plate made of acrylic resin) is used as a sign light standard.
Are determined so that the surface luminance of a predetermined character portion ("ma" of "stop") is 20 cd or more. Therefore, a circline fluorescent lamp (30 W) is generally used as a light source body, and its power consumption is approximately 35% in addition to the power consumption of the choke used together.
W.

On the other hand, as a light source of the road sign, first, fifteen illumination lamps of the present invention (without reflector) were experimentally set in the above-described equilateral triangular box having a side length of 70 cm. When the surface luminance of the determined character portion of the translucent member for display was measured with a luminance meter, the luminance was 20 cd.
Could not meet.

Therefore, when fifteen illumination lamps using the reflector having the structure shown in FIG. 7 were installed, about twice the luminance was obtained. On the other hand, in the case where ten illumination lamps using the reflector shown in FIG. 6 were installed, a luminance of about 50 cd was obtained. In order to reduce the luminance to 20 cd of the above-mentioned marker light standard, for example, it is conceivable to reduce the number of illumination lamps to be used. The supply voltage was adjusted to about 1/2. From the above experiments, it has been clarified that when the lighting device of the present invention is applied to a road sign light, power consumption can be significantly reduced as described below.

That is, in the conventional road sign lamp, while the power consumption of the circulating fluorescent lamp is about 35 W,
In the road sign lamp to which the present invention is applied, 20 LED light sources (average 0.07 W) of 10 illumination lamps (the power consumption of the inverter is not added because the power consumption is very small) are 0.07
W × 20 = 1.4 W, but by further reducing the voltage by half, the power consumption is reduced to 0.7 W, making it possible to save 1/50 of the power compared to the circline fluorescent lamp 35 W. It has been proven to be.

In the above-described embodiment, the configuration in which the protrusion 4 made of silicone rubber is provided on the inner peripheral surface of the cylindrical light transmitting member 1 is exemplified. However, in the present invention, for example, the light transmitting member 1 is provided. The inner peripheral surface of 1 is made into a rough surface with fine irregularities by mechanical means, whereby the same function as that of the protrusion forming body 4 can be exerted.

FIGS. 9 to 11 show an embodiment in which the projection forming body formed on the inner peripheral surface of the light transmitting member is formed as a separate member. 9 to 11, reference numeral 10 denotes a transparent acrylic resin sheet, and reference numeral 10a denotes a ridge portion formed on one surface of the sheet by molding so as to be parallel to the length and width. The ridge 10a has a shape in which four pyramids are continuous. The sheet 10 is rolled into a cylindrical shape with the ridge 10a inside, and inserted into the light transmitting member 1. Thus, the rolled sheet is brought into close contact with the inner surface of the light transmitting member 1 on its flat surface side due to the repulsive force at the time of release, and the ridge 10a of the sheet exerts the same function as the above-mentioned protrusion forming body. The reason why the protruding ridge portion 10a has a shape in which quadrangular pyramids are continuous is to facilitate the rounding of the sheet into a cylindrical shape.
It is not limited to pyramids.

FIG. 12 shows an embodiment in which an LED light source body can be disposed at an intermediate portion of a cylindrical light transmitting member. In FIG. 12, reference numeral 1 denotes a cylindrical light transmitting member, and reference numeral 1d denotes an opening for inserting an LED light source body, which is formed in a part of the peripheral surface. After inserting the supporting members 11 with the LED light sources 2 attached to both sides from the opening 1d, the supporting members 11 are held by a transparent lid member (not shown) closing the opening 1d. It has a configuration.
According to the above configuration, the length of the light transmitting member can be obtained by eliminating the restriction on the length of the cylindrical light transmitting member.

[0051]

As described in detail above, according to the present invention,
An illumination lamp including a cylindrical light transmission member provided with a projection forming body on an inner peripheral surface thereof, and an LED light source provided at one or both open ends or an intermediate portion of the light transmission member; and a rear side of the illumination lamp. Therefore, an illumination device that can emit high-luminance illumination light with low power consumption can be obtained. In addition, since the lighting device having the above-described structure has low power consumption, there is an advantage that a solar cell can be used as a power supply. For example, when a solar cell is used as a road sign light, a large-capacity large-sized solar cell capable of supplying power even without irradiation of sunlight for 5 days is required. However, according to the use of the lighting device of the present invention, power consumption is reduced. Since it is extremely small, it is possible to use a small battery having a small capacity. In the future, if the cost of solar cells (including photovoltaic power generation) is reduced and cheaper solar cells can be obtained, they will be used in household lighting and various industrial fields that rely on AC power. The lighting device of the present invention can be replaced with the lighting device of the present invention. This leads to a significant reduction in thermal power generation using conventional fossil fuels, enables energy savings and a significant reduction in CO ₂ , and is expected to greatly contribute to preventing global warming.

[Brief description of the drawings]

FIG. 1 is a principle configuration diagram that is slightly exaggerated for explaining an illumination mode of an illumination lamp included in an illumination device according to the present invention.

FIG. 2 is a cross-sectional view showing one embodiment of a lighting lamp constituting the lighting device according to the present invention.

FIG. 3 is an enlarged sectional view taken along line XX of FIG. 2;

FIG. 4 is a configuration diagram showing an embodiment using a combination of an illumination lamp and a reflector.

FIG. 5 is an explanatory diagram of a shape of a reflector for an illumination lamp.

FIG. 6 is a configuration diagram showing another embodiment using a combination of an illumination lamp and a reflector.

FIG. 7 is a configuration diagram showing another embodiment using a combination of an illumination lamp and a reflector.

FIG. 8 is an explanatory diagram of an illumination lamp used for luminance measurement.

FIG. 9 is a plan view of a sheet in which a ridge is integrally formed by a molding process.

FIG. 10 is a side view of the seat.

FIG. 11 is a cross-sectional view of a configuration in which a sheet is rolled into a cylindrical shape and inserted and arranged in a light transmitting member.

FIG. 12 is a perspective view of a configuration in which an LED light source body is inserted and arranged in a middle part of a cylindrical light transmitting member.

[Explanation of symbols]

A lighting lamp 1 light transmitting member 1a light extraction surface 1b open end 1c inner peripheral surface 1d opening 2 LED light source 3 internal space 4 projection forming member 4a protruding portion 5 Cap 6 reflector B _1, B _2, B ₃ reflected Body C translucent member D translucent member for light diffusion 10 transparent resin sheet 10a ridge 11 support member for LED light source body

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C096 AA07 AA28 BA01 BA02 BB04 CA06 CA22 CB02 CC06 CC24 CD06 CD23 CD32 FA01

Claims (13)

[Claims] 1. A light transmission member having a cylindrical shape with one end or both ends open along an axial direction and at least a part of an outer peripheral surface forming a transparent or translucent light extraction surface, and the opening of the light transmission member. An LED light source that is disposed at one or both ends or an intermediate portion of the light transmission member and generates light having directivity along the axial direction in the internal space of the light transmission member, and an LED on the inner peripheral surface of the light transmission member, An illumination lamp comprising a transparent or translucent protrusion forming body which receives light from the light source body, irregularly reflects the light, and thereby applies irradiation light to the light extraction surface of the light transmission member; and a rear side of the illumination lamp. And a reflector disposed in the lighting device. 2. The protrusion forming body on the inner peripheral surface of the light transmitting member protrudes toward the inner space of the light transmitting member on the inner peripheral surface of the light transmitting member and is interspersed with the inner peripheral surface. The lighting device according to claim 1, wherein the lighting device is a protrusion. 3. The projection forming body on the inner peripheral surface of the light transmission member is formed in a plurality of ridges which are spaced in the axial direction of the light transmission member and are laterally strip-shaped. The lighting device according to claim 1. 4. A projection formed on an inner peripheral surface of the light transmitting member is formed in a strip shape having a spiral band shape in the axial direction of the light transmitting member. The lighting device according to claim 1. 5. The projection-forming body on the inner peripheral surface of the light transmitting member is made of silicone rubber, and the silicone rubber is attached to the inner peripheral surface of the light transmitting member to form the projection-forming body. The lighting device according to claim 1, wherein: 6. The lighting device according to claim 1, wherein the protrusion forming body on the inner peripheral surface of the light transmitting member has an inner peripheral surface of the light transmitting member as a fine uneven rough surface. apparatus. 7. A transparent or translucent sheet member in which a projection formed on an inner peripheral surface of the light transmitting member is formed by forming a projection of a quadrangular pyramid on one side in a vertical / horizontal parallel shape by molding. The lighting device according to claim 1, wherein the light-transmitting member is inserted into the light transmission member after being rounded into a cylindrical shape with the ridge portion inside. 8. A light reflecting member is provided at a portion surrounding the LED light source body disposed at one or both ends of the light transmitting member or at an intermediate portion and facing an internal space of the light transmitting member. The lighting device according to claim 1. 9. The LED light source of the illumination lamp comprises one or a combination of a plurality of white, blue, green, and red light sources. Lighting equipment. 10. The LED light source body according to claim 1, wherein an LED light source body is inserted and arranged in an internal space of the light transmission member from an opening formed in a part of a peripheral surface of the cylindrical light transmission member. Lighting equipment. 11. The reflector is configured to reflect light illuminated behind the illumination lamp diagonally forward and leftward, and to apply V to the left and right rear of the illumination lamp so as to illuminate a central band between the illumination lamps of the light transmitting member. A first reflector extending in a V-shape; and a V-shaped first reflector that is continuous with both ends of the first reflector, reflects light emitted obliquely rearward of the illumination lamp, and forms a central band between the illumination lamps of the translucent member; A second reflector for irradiating a wide band including a zone immediately below the illumination lamp; and a second reflector connected to a tip of the second reflector, receiving and reflecting lateral irradiation light of another illumination lamp including an adjacent illumination lamp, and reflecting the light. The lighting device according to claim 1, further comprising a third reflector that irradiates a band from a center band between the lighting lamps of the light member to a band immediately below the lighting lamp. 12. The lighting device according to claim 1, wherein the reflector projects from the rear side of the illumination lamp toward the front of the lamp, and has a bowl shape so as to define an irradiation area of the illumination lamp. 13. The apparatus according to claim 1, wherein the reflector is formed in a shape that is superimposed on a part of an outer peripheral portion of a cylindrical light transmitting member that forms the illumination lamp. Lighting equipment.