JP2003068107A - Louvered projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a louvered projector that enables a locally desired adjustment of light distribution and enables an adjustment of light shielding. SOLUTION: The louvered projector has a lamp 1, a reflector 2 for reflecting light of the lamp 1 to radiate the light from an open face, and a louver 3 arranged over the open face. The louver 3 comprises a plurality of long parallel boards 6 spaced out in parallel arrangement, and short parallel boards 7 interposed in a middle region of the parallel arrangement direction of the long parallel boards 6 within the spaces between the long parallel boards 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louvered projector, and more particularly to a louvered projector which can adjust a light shielding angle and can locally adjust light shielding.

[0002]

2. Description of the Related Art Generally, as a conventional floodlight with a louver, as shown in FIG. 15, a lamp (1) and a reflector (2) for reflecting the light of the lamp (1) and radiating the light from its opening surface. There is a luminaire body (10) having
It is known that the louver (3) arranged near the opening inside the lighting device body (10) is attached.

Further, as shown in FIG. 16, a lamp (1)
And a reflector plate (2) that reflects the light of the lamp (1) and emits the light from the opening surface thereof (1)
0), and the louver (3) arranged near the opening surface outside the luminaire main body (10) may be attached.

In both cases shown in FIGS. 15 and 16, a glass plate (13) is attached to the opening surface of the luminaire main body (10) as necessary. It didn't matter if they were there.

[0005]

However, in such a louver-equipped floodlight, as shown in FIG. 15 and FIG.
In both cases, the louver (3) allows the louver (3) to uniformly distribute light symmetrically as the light distribution radiated from the lamp (1), but cannot partially adjust the desired light distribution. The degree of freedom in adjusting the light distribution was small. Moreover, as shown by the arrow (A) in FIG. 15, in the case of the louver (3) arranged in the vicinity of the opening inside the lighting device main body (10), the light-shielding angle of the louver (3) (especially, 30 degrees). In the above case), there was a limit and production was limited.

In addition, the lamp (1) is reflected by the reflector (2) to cause glare on the inner surface of the reflector (2), but the luminaire main body (1) does not reach the light-shielding angle of the louver (3).
It was necessary to tilt 0), and it was insufficient as a countermeasure against glare of the reflector.

The present invention has been made in order to solve the above-mentioned problems, and its object is to provide a louver capable of partially adjusting the required light distribution and adjusting the light shielding. A floodlight is provided.

[0008]

A projector with louver according to claim 1 of the present invention comprises a lamp (1) and a reflector (2) for reflecting the light of the lamp (1) and emitting the light from an opening surface. And a louver (3) arranged on the same opening surface, wherein the louver (3) is provided.
However, a plurality of longitudinal parallel plates (6) arranged side by side with a space
And a short parallel plate (7) interposed in the center of the longitudinal parallel plates (6) in the juxtaposed direction in the space between the longitudinal parallel plates (6). .

The louvered projector according to claim 2 of the present invention comprises a lamp (1), a reflector (2) for reflecting the light of the lamp (1) and radiating the light from the opening, and the opening (2). In the floodlight with louvers having the louvers (3) arranged, the louvers (3) are composed of a plurality of long louvers (8) arranged in parallel with a space, and the long louvers (8) are arranged in parallel. A light-shielding plate (4) parallel to the opening surface of the reflecting plate (2) is provided at the center of the direction.

A louvered projector according to a third aspect of the present invention comprises a lamp (1), a reflector (2) for reflecting the light of the lamp (1) and radiating the light from the opening surface, and the opening surface. A louver-equipped floodlight having arranged louvers (3), wherein the louvers (3) are provided with a plurality of longitudinal parallel plates (6) or longitudinal louvers (8) arranged side by side with a space provided between them.
The long parallel plates (6) or the long louvers (8) are formed by a short parallel plate (7) or a short louver (9) interposed in the central portion in the juxtaposed direction in the space between the long parallel plates (6) or the long louvers (8). At least one of the louver (8) and the short louver (9) is characterized in that a light shielding plate (4) parallel to the opening surface of the reflection plate (2) is provided in the central portion in the juxtaposed direction.

In the projector with louvers according to a fourth aspect of the present invention, the light shielding plate (4) is formed by bending the space of the long louver (8) or the short louver (9). It is characterized by

A louvered projector according to a fifth aspect of the present invention is characterized in that the light-shielding plate (4) is formed such that a central portion thereof is large and an end portion thereof is small.

According to a sixth aspect of the present invention, there is provided a louvered projector, wherein a light-shielding front plate is provided on an opening surface of the reflection plate (2).
The louver (3) is housed in the reflector (2).

A louvered projector according to a seventh aspect of the present invention is characterized in that the light-shielding front plate is a glass plate (13).

The louvered projector according to the eighth aspect of the present invention is characterized in that the louver (3) is arranged in the rotational direction with respect to the reflector (2).

The louvered projector according to claim 9 of the present invention is characterized in that the louver (3) is attachable and detachable.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the drawings according to the embodiments.

FIG. 1 is a perspective view showing a louvered projector according to an embodiment of the present invention. FIG. 2 is a perspective view showing a louvered projector according to another embodiment of the present invention. FIG. 3 is a perspective view showing a floodlight with a louver according to another embodiment of the present invention. FIG. 4 is a perspective view showing a louver according to an embodiment used for the floodlight with louver of the present invention. FIG. 5 is a plan view showing a longitudinal louver according to an embodiment used for the floodlight with louver of the present invention. FIG. 6 is a plan view showing a short louver according to an embodiment used for the floodlight with louver of the present invention. FIG. 7 is a perspective view showing a louvered projector according to another embodiment different from that of FIG. 3 of the present invention. FIG. 8 is a perspective view showing how the louver frame according to the embodiment is attached to the main body of the lighting fixture in the floodlight with louver of the present invention. FIG. 9 is a cross-sectional view of a main part showing a state when the louver frame according to the embodiment is attached to the lighting fixture body in the louvered floodlight of the present invention. FIG. 10 is a perspective view showing a mounting direction when the louver frame according to the embodiment is mounted on the lighting fixture body in the louvered floodlight of the present invention. FIG. 11 shows a louvered projector of the present invention,
It is a top view showing a situation of attachment when an angle of a louver is 0 ° when a louver frame according to an embodiment is attached to a lighting fixture body. FIG. 12 shows a louvered projector of the present invention, in which the louver angle is 45 ° when the louver frame according to the embodiment is attached to the lighting fixture body.
It is a top view showing a situation of attachment in the case of. FIG.
FIG. 4A is a plan view showing how the louvered floodlight of the present invention is attached when the louver frame according to one embodiment is attached to the lighting device main body when the angle of the louver is 90 °. FIG. 14 is a plan view showing how the louvered floodlight of the present invention is attached when the louver frame according to one embodiment is attached to the main body of the luminaire when the louver angle is 135 °.

As shown in FIG. 1, the louvered projector of the present invention comprises a lamp (1), a reflector (2) for reflecting the light of the lamp (1) and radiating the light from the opening, and the opening. A louver-equipped floodlight having a louver (3) arranged in the above, wherein the louver (3) is provided with a plurality of longitudinal parallel plates (6) arranged side by side with a space, and the longitudinal parallel plates (6).
It is constituted by a short parallel plate (7) interposed in the central portion of the longitudinal parallel plates (6) in the juxtaposed direction in the space between them.

The lamp (1) is, as shown in FIG.
It is provided in the lighting fixture body (10).
The lamp (1) is not particularly limited,
Usually, a light bulb-shaped one as shown in FIG. 1 is adopted. In addition, as the lamp (1),
It does not matter if a fluorescent lamp is used.

The reflector (2) is, as shown in FIG.
Similar to the lamp (1), it is provided in the lighting fixture body (10), and reflects the light of the lamp (1) and emits the light from the opening surface. The reflecting plate (2) is a so-called reflecting mirror, and may be made of any material as long as it reflects light and easily emits light from the opening surface. There is no such thing. To give an example, this reflector (2)
Alternatively, it may be a film of a metal such as aluminum.

The louver (3) is arranged on the opening surface as shown in FIG. The louver (3) may be provided outside the lighting apparatus main body (10) as shown in FIG. 1 as long as it is arranged on the opening surface, or as shown in FIG. It may be provided inside the lighting fixture body (10). Further, in the present embodiment, the louver (3) is directly attached to the louver frame (5) by rivets and welding, and the louver frame (5) is arranged and attached to the opening surface. .

In the present invention, the louver (3) has the structure shown in FIG.
As shown in, a plurality of longitudinal parallel plates (6) arranged in parallel with each other in a space are provided, and a space between the longitudinal parallel plates (6) is provided in the central portion of the longitudinal parallel plates (6) in the juxtaposed direction. It is composed of an intervening short parallel plate (7). The long parallel plate (6) and the short parallel plate (7) are attached in parallel with each other with a space provided therebetween. The long parallel plate (6) and the short parallel plate (7) may be made of the same material as the louver (3) that has been conventionally used.

According to the present invention, by adopting such a configuration, the lamp (1) emits light and the reflector (2)
While the light of the lamp (1) is reflected and the light is surely emitted from the opening surface, the combination of the long parallel plate (6) and the short parallel plate (7) makes it possible to locally adjust the light shielding. At the same time, the light distribution can be controlled. When the louver (3) is mounted inside the lighting equipment body (10), the light shielding angle can be reduced by combining the long parallel plate (6) and the short parallel plate (7). Is.

That is, according to the present invention, it is possible to partially adjust the light distribution and to adjust the light shielding.

The floodlight with louver of the present invention is shown in FIG.
As shown in FIG. 2, with a louver having a lamp (1), a reflector (2) that reflects the light of the lamp (1) and emits the light from an opening surface, and a louver (3) disposed on the opening surface. In the floodlight, the louver (3) is composed of a plurality of longitudinal louvers (8) arranged in parallel with a space provided, and the reflector (2) is provided at the center of the longitudinal louvers (8) in the juxtaposed direction. The light-shielding plate (4) may be provided in parallel with the opening surface of the.

In the case shown in FIG. 2, the louver (3) is used.
But a plurality of longitudinal louvers (8) arranged side by side with a space
The longitudinal louver (8) is provided with a light-shielding plate (4) parallel to the opening surface of the reflection plate (2) at the center of the longitudinal louver (8) in the juxtaposed direction. The specific shapes of the light shielding plate (4) and the light shielding plate (4) are shown in FIG.
As shown in. The longitudinal louver (8) may be made of the same material as that of the louver (3) which has been conventionally used. The light shielding plate (4) is not particularly limited as long as it can block light.

According to the present invention, by adopting such a structure, the lamp (1) emits light and the reflector (2) is used.
While the light of the lamp (1) is reflected and is surely radiated from the opening surface, the longitudinal louver (8) and the light shielding plate (4) make it possible to locally adjust the light shielding and to distribute the light. It can be controlled. Moreover, the longitudinal louver (8) and the light shielding plate (4) can sufficiently prevent glare of the reflection plate (2). In particular, if the angle between the longitudinal louver (8) and the light shielding plate (4) is substantially L-shaped in cross section, glare can be more effectively prevented.

That is, according to the present invention, it is possible to partially adjust the light distribution and to adjust the light shielding.

Further, as shown in FIG. 3, the louvered projector of the present invention includes a lamp (1) and a reflector (2) for reflecting the light of the lamp (1) and radiating the light from an opening. A louver-equipped floodlight having a louver (3) arranged on an opening surface, wherein the louver (3) is provided with a plurality of longitudinal parallel plates (6) or longitudinal louvers (8) arranged side by side with spaces. The long louvers (6) or the short louvers (8) which are interposed in the space between the long parallel louvers (6) or the long louvers (8) at the central portion in the juxtaposed direction. (8) or at least one of the short louvers (9) may be provided with a light shielding plate (4) parallel to the opening surface of the reflection plate (2) at the central portion in the arranging direction. It is a thing.

In the case shown in FIG. 3, the louver (3) is used.
Is a plurality of longitudinal parallel plates (6) or louvers (8) arranged side by side with a space, and a space between the longitudinal parallel plates (6) or louvers (8) in the center in the juxtaposition direction. It is composed of a short parallel plate (7) or a short louver (9) interposed in the section, and is provided in the central portion in the juxtaposed direction with at least one of the long louver (8) and the short louver (9). Light shield plate (4) parallel to the opening surface of the reflector plate (2)
The specific shapes of the longitudinal louver (8) and the light shielding plate (4) are as shown in FIG. Similarly, the concrete shape of the short louver (9) is as shown in FIG. The long louvers (8) and the short louvers (9) may be made of the same material as the louvers (3) that have been conventionally used.
The light shielding plate (4) is not particularly limited as long as it can block light.

According to the present invention, by adopting such a structure, the lamp (1) emits light and the reflector (2) is used.
The long parallel plate (6) or the long louver (8) and the short parallel plate (7) or the short louver (9) while reflecting the light of the lamp (1) and surely emitting the light from the opening surface. In addition to the combination of (1) and (2), the light shielding plate (4) can locally adjust the light shielding and control the light distribution. Moreover, the long louver (8) or the short louver (9) and the light shielding plate (4) can sufficiently prevent glare of the reflection plate (2). In particular, if the angle between the long louvers (8) or the short louvers (9) and the light shielding plate (4) is substantially L-shaped in cross section, it is possible to more effectively prevent glare. is there. In addition, the lighting fixture body (1
When installing the louver (3) inside the (0), by combining the long parallel plate (6) and the short parallel plate (7),
The light shielding angle can be reduced.

That is, according to the present invention, it is possible to partially adjust the desired light distribution and perform the light shielding adjustment.

As shown in FIGS. 4 to 6, the light shielding plate (4) is formed by bending in the space of the long louver (8) or the short louver (9). This is a very preferable one because it can be more easily formed as the light shielding plate (4) by bending it into the space of the long louver (8) or the short louver (9).

Further, as shown in FIGS. 4 to 6, when the light shielding plate (4) is formed such that its central portion is large and its end portion is small, such a central portion is large and its end portion is large. The light-shielding plate (4) having a small portion shields light more surely, and the countermeasure against glare of the reflection plate (2) can be more sufficiently performed.

Then, as shown in FIG. 7, a light-shielding front plate is provided on the opening surface of the reflection plate (2), and the louver (3) is housed in the reflection plate (2). , The light-shielding front plate provides even more reliable light shielding,
This is more effective as a countermeasure against glare of the reflection plate (2), and because the louver (3) is housed in the reflection plate (2), it is easy to obtain an upper cut light distribution. It is also unnecessary as a care for the louver (3).

As described above, when the louver (3) is mounted inside the lighting apparatus body (10), the louver frame (5) is provided between the reflector (2) and the light-shielding front plate as shown in FIG. The louver (3) and the shading plate (4) are attached by providing a space so as not to hit the shading front plate. Further, the light shielding plate (4) is attached so as to face the light shielding front plate.

On the contrary, as shown in FIGS. 8 and 9, when the louver (3) is attached to the outside of the luminaire main body (10), the louver frame (5) is attached to the outer periphery of the reflector (2).
Mount the mounting plate (14) attached to the
It is sandwiched by 1) and attached with screws (12).

In particular, as shown in FIGS. 1 and 7, when the light-shielding front plate is the glass plate (13), the light-shielding front plate, which is the glass plate (13), provides more reliable light shielding. As a result, it is possible to further sufficiently prevent the glare of the reflection plate (2).

Moreover, as shown in FIG. 10, when the louver (3) is arranged in the rotational direction with respect to the reflector (2), the louver frame (5) is indicated by an arrow (). Rotate freely to the desired angle as shown in B),
Louver (3) can be attached,
As a result, it is possible to adjust the light distribution that is partially obtained more reliably and freely, and it is possible to perform the light shielding adjustment very effectively.

Specifically, as shown in FIG. 11, when the louver frame (5) is attached to the main body of the luminaire (10), the louver (3) is attached at an angle of 0 °, as shown in FIG. As described above, when the louver frame (5) is attached to the luminaire main body (10), when the louver (3) is at an angle of 45 °, the louver frame (5) is attached to the luminaire main body (10) as shown in FIG. When the louver (3) is mounted on the louver (3) when the angle of the louver (3) is 90 ° or when the louver frame (5) is mounted on the lighting device body (10) as shown in FIG. The angle can be freely set such as when the angle is 135 °.

Further, from the above, when the louver (3) is attached to the outside of the luminaire main body (10), it can be easily attached and detached, and conversely, inside the luminaire main body (10). When the louver (3) is attached, it can be attached by designating a direction instruction.

Furthermore, if the louver (3) is attachable and detachable, the louver (3) can be cleaned or replaced when the louver (3) is cleaned or replaced.
Since it is attachable and detachable, it is easy to perform on-site work and is preferable for the user.

[0044]

According to the floodlight with louver according to the first aspect of the present invention, the light is emitted from the lamp (1) while the light from the lamp (1) is reflected by the reflector (2) to form an opening surface. With the combination of the long parallel plate (6) and the short parallel plate (7), it is possible to locally adjust the light blocking and to control the light distribution while surely radiating the light. . When the louver (3) is mounted inside the lighting equipment body (10), the light shielding angle can be reduced by combining the long parallel plate (6) and the short parallel plate (7). Is.

That is, according to the present invention, it is possible to partially adjust the light distribution and to adjust the light shielding.

According to the louver-equipped floodlight according to claim 2 of the present invention, while the light is emitted from the lamp (1), the light from the lamp (1) is reflected by the reflecting plate (2) and is reliably emitted from the opening surface. Longitudinal louver (8) and shading plate (4) while radiating light to
With this, it is possible to locally adjust the light blocking and control the light distribution. Moreover, the longitudinal louver (8) and the light shielding plate (4) can sufficiently prevent glare of the reflection plate (2). In particular, if the angle between the longitudinal louver (8) and the light shielding plate (4) is substantially L-shaped in cross section, glare can be more effectively prevented.

That is, according to the present invention, it is possible to partially adjust the desired light distribution and perform the light shielding adjustment.

According to the projector with louver according to the third aspect of the present invention, the light is emitted from the lamp (1) while the light from the lamp (1) is reflected by the reflecting plate (2) and is reliably emitted from the opening surface. The long parallel plate (6) or the long louver (8) and the short parallel plate (7) or the short louver (9) while emitting light to the
In addition to the combination with, the light-shielding plate (4) can locally adjust the light-shielding and control the light distribution. Moreover, long louvers (8)
Or by the short louver (9) and the light shield (4),
The glare of the reflection plate (2) can be sufficiently taken. In particular, if the angle between the long louver (8) or the short louver (9) and the light shielding plate (4) is substantially L-shaped in cross section, it is possible to more effectively prevent glare. is there. In addition, the lighting fixture body (1
When installing the louver (3) inside the (0), by combining the long parallel plate (6) and the short parallel plate (7),
The light shielding angle can be reduced.

That is, according to the present invention, it is possible to partially adjust the light distribution and to adjust the light blocking.

According to the projector with louver according to claim 4 of the present invention, in addition to the case of claim 2 or claim 3, it is bent into the space of the long louver (8) or the short louver (9). As a result, the light-shielding plate (4) can be formed more easily and is very preferable.

According to the louver-equipped floodlight according to claim 5 of the present invention, in addition to the case of any one of claims 2 to 4, the light shielding is formed such that the central portion is large and the end portions are small. The plate (4) shields the light more reliably, and the glare of the reflector (2) can be more sufficiently prevented.

According to the floodlight with louver of the sixth aspect of the present invention, in addition to the case of any one of the first to fifth aspects, the light-shielding front plate provides more reliable light shielding, and the reflector plate. In addition to being able to more sufficiently prevent the glare of (2), the louver (3) is housed in the reflection plate (2), so that the light distribution of the upper cut can be easily obtained. It also becomes unnecessary as the maintenance of (3).

According to the louvered projector of claim 7 of the present invention, in addition to the case of claim 6, the glass plate (1
The light-shielding front plate which is 3) provides more reliable light shielding, which leads to a more sufficient countermeasure against glare of the reflector (2).

According to the louvered projector according to claim 8 of the present invention, in addition to the case of any one of claims 1 to 7, the louver frame (5) can be freely rotated to a desired angle to allow the louver. (3) can be attached, and as a result, it is possible to make even more certain and free adjustments of the light distribution that is to be partially obtained, and very effectively perform the adjustment of light shielding. Will be possible.

According to the floodlight with louver according to claim 9 of the present invention, in addition to the case of any one of claims 1 to 8, when the louver (3) is cleaned or replaced, the louver (3 ) Is attachable and detachable, which facilitates work at the site and is preferable for the user.

[Brief description of drawings]

FIG. 1 is a perspective view showing a louvered projector according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a louvered floodlight according to another embodiment of the present invention.

FIG. 3 is a perspective view showing a louvered projector according to still another embodiment of the present invention.

FIG. 4 is a perspective view showing a louver according to an embodiment used in a louvered floodlight of the present invention.

FIG. 5 is a plan view showing a longitudinal louver according to an embodiment used in a louvered floodlight of the present invention.

FIG. 6 is a plan view showing a short louver according to an embodiment used for the floodlight with louver of the present invention.

FIG. 7 is a perspective view showing a louvered projector according to still another embodiment different from that of FIG. 3 of the present invention.

FIG. 8 is a perspective view showing a state in which the louver frame according to the embodiment is attached to the lighting fixture main body in the louvered floodlight of the present invention.

FIG. 9 is a cross-sectional view of essential parts showing a state when the louver frame according to the embodiment is attached to the lighting fixture body in the floodlight with louver of the present invention.

FIG. 10 is a perspective view showing a mounting direction when the louver frame according to the embodiment is mounted on the lighting fixture main body in the floodlight with louver of the present invention.

FIG. 11 is a plan view showing how the louvered floodlight of the present invention is attached when the louver frame according to the embodiment is attached to the main body of the lighting fixture when the angle of the louver is 0 °.

FIG. 12 is a plan view showing how the louvered floodlight of the present invention is attached when the louver frame according to one embodiment is attached to the main body of the lighting fixture when the angle of the louver is 45 °.

FIG. 13 is a plan view showing how the louvered floodlight of the present invention is attached when the louver frame according to the embodiment is attached to the main body of the lighting device when the angle of the louver is 90 °.

FIG. 14 is a plan view showing how the louver-equipped floodlight of the present invention is attached when the louver frame according to one embodiment is attached to the main body of the lighting fixture when the angle of the louver is 135 °.

FIG. 15 is a perspective view showing a louvered projector according to a conventional example.

FIG. 16 is a perspective view showing a louvered projector according to another conventional example.

[Explanation of symbols]

1 lamp 2 reflector 3 louvers 4 light shield 6 Longitudinal parallel plate 7 Short parallel plate 8 Longitudinal louvers 9 Short louvers 13 glass plate

Claims (9)

[Claims] 1. A louvered projector comprising a lamp, a reflector for reflecting the light of the lamp and radiating the light from an opening surface, and a louver arranged on the opening surface, wherein the louver has a space. A plurality of longitudinal parallel plates arranged side by side,
A louver-equipped floodlight, comprising a short parallel plate interposed in the center of the longitudinal parallel plates in the juxtaposed direction in the space between the parallel plates. 2. A louvered projector comprising a lamp, a reflector for reflecting the light of the lamp and emitting the light from an opening surface, and a louver arranged in the opening surface, wherein the louver has a space. A louvered projector comprising a plurality of longitudinal louvers arranged side by side, and a light shielding plate parallel to the opening surface of the reflection plate is provided at the center of the longitudinal louvers in the juxtaposed direction. 3. A louvered projector comprising a lamp, a reflector for reflecting the light of the lamp and emitting the light from an opening surface, and a louver arranged on the opening surface, wherein the louver has a space. A plurality of longitudinal parallel plates or louvers arranged side by side, and a short parallel plate or a short louver interposed in the central portion of the parallel direction in the space between the longitudinal parallel plates or louvers, A floodlight with a louver, characterized in that at least one of the long louver and the short louver is provided with a light-shielding plate parallel to the opening surface of the reflection plate at the central portion in the arranging direction. 4. The illuminator with a louver according to claim 2, wherein the light shielding plate is formed by bending in a space of a long louver or a short louver. 5. The louver-equipped floodlight according to claim 2, wherein the light-shielding plate has a large central portion and a small end portion. 6. The floodlight with louver according to claim 1, wherein a light-shielding front plate is provided on an opening surface of the reflection plate, and the louver is housed in the reflection plate. 7. The floodlight with louver according to claim 6, wherein the light-shielding front plate is a glass plate. 8. The louver, with respect to the reflector,
The louvered projector according to any one of claims 1 to 7, wherein the projector is arranged in a rotational direction. 9. The floodlight with louver according to claim 1, wherein the louver is attachable and detachable.